<?php

declare(strict_types=1);

namespace Anthropic\Beta\Messages;

use Anthropic\Beta\AnthropicBeta;
use Anthropic\Beta\Messages\MessageCreateParams\ServiceTier;
use Anthropic\Beta\Messages\MessageCreateParams\Speed;
use Anthropic\Beta\Messages\MessageCreateParams\System;
use Anthropic\Core\Attributes\Optional;
use Anthropic\Core\Attributes\Required;
use Anthropic\Core\Concerns\SdkModel;
use Anthropic\Core\Concerns\SdkParams;
use Anthropic\Core\Contracts\BaseModel;
use Anthropic\Messages\Model;

/**
 * Send a structured list of input messages with text and/or image content, and the model will generate the next message in the conversation.
 *
 * The Messages API can be used for either single queries or stateless multi-turn conversations.
 *
 * Learn more about the Messages API in our [user guide](https://platform.claude.com/docs/en/get-started)
 *
 * @see Anthropic\Services\Beta\MessagesService::create()
 *
 * @phpstan-import-type ContainerVariants from \Anthropic\Beta\Messages\MessageCreateParams\Container
 * @phpstan-import-type SystemVariants from \Anthropic\Beta\Messages\MessageCreateParams\System
 * @phpstan-import-type BetaThinkingConfigParamVariants from \Anthropic\Beta\Messages\BetaThinkingConfigParam
 * @phpstan-import-type BetaToolChoiceVariants from \Anthropic\Beta\Messages\BetaToolChoice
 * @phpstan-import-type BetaToolUnionVariants from \Anthropic\Beta\Messages\BetaToolUnion
 * @phpstan-import-type BetaMessageParamShape from \Anthropic\Beta\Messages\BetaMessageParam
 * @phpstan-import-type BetaCacheControlEphemeralShape from \Anthropic\Beta\Messages\BetaCacheControlEphemeral
 * @phpstan-import-type ContainerShape from \Anthropic\Beta\Messages\MessageCreateParams\Container
 * @phpstan-import-type BetaContextManagementConfigShape from \Anthropic\Beta\Messages\BetaContextManagementConfig
 * @phpstan-import-type BetaDiagnosticsParamShape from \Anthropic\Beta\Messages\BetaDiagnosticsParam
 * @phpstan-import-type BetaFallbackParamShape from \Anthropic\Beta\Messages\BetaFallbackParam
 * @phpstan-import-type BetaRequestMCPServerURLDefinitionShape from \Anthropic\Beta\Messages\BetaRequestMCPServerURLDefinition
 * @phpstan-import-type BetaMetadataShape from \Anthropic\Beta\Messages\BetaMetadata
 * @phpstan-import-type BetaOutputConfigShape from \Anthropic\Beta\Messages\BetaOutputConfig
 * @phpstan-import-type BetaJSONOutputFormatShape from \Anthropic\Beta\Messages\BetaJSONOutputFormat
 * @phpstan-import-type SystemShape from \Anthropic\Beta\Messages\MessageCreateParams\System
 * @phpstan-import-type BetaThinkingConfigParamShape from \Anthropic\Beta\Messages\BetaThinkingConfigParam
 * @phpstan-import-type BetaToolChoiceShape from \Anthropic\Beta\Messages\BetaToolChoice
 * @phpstan-import-type BetaToolUnionShape from \Anthropic\Beta\Messages\BetaToolUnion
 *
 * @phpstan-type MessageCreateParamsShape = array{
 *   maxTokens: int,
 *   messages: list<BetaMessageParam|BetaMessageParamShape>,
 *   model: string|Model|value-of<Model>,
 *   cacheControl?: null|BetaCacheControlEphemeral|BetaCacheControlEphemeralShape,
 *   container?: ContainerShape|null,
 *   contextManagement?: null|BetaContextManagementConfig|BetaContextManagementConfigShape,
 *   diagnostics?: null|BetaDiagnosticsParam|BetaDiagnosticsParamShape,
 *   fallbackCreditToken?: string|null,
 *   fallbacks?: list<BetaFallbackParam|BetaFallbackParamShape>|null,
 *   inferenceGeo?: string|null,
 *   mcpServers?: list<BetaRequestMCPServerURLDefinition|BetaRequestMCPServerURLDefinitionShape>|null,
 *   metadata?: null|BetaMetadata|BetaMetadataShape,
 *   outputConfig?: null|BetaOutputConfig|BetaOutputConfigShape,
 *   outputFormat?: null|BetaJSONOutputFormat|BetaJSONOutputFormatShape,
 *   serviceTier?: null|ServiceTier|value-of<ServiceTier>,
 *   speed?: null|Speed|value-of<Speed>,
 *   stopSequences?: list<string>|null,
 *   system?: SystemShape|null,
 *   temperature?: float|null,
 *   thinking?: BetaThinkingConfigParamShape|null,
 *   toolChoice?: BetaToolChoiceShape|null,
 *   tools?: list<BetaToolUnionShape>|null,
 *   topK?: int|null,
 *   topP?: float|null,
 *   betas?: list<string|AnthropicBeta|value-of<AnthropicBeta>>|null,
 *   userProfileID?: string|null,
 * }
 */
final class MessageCreateParams implements BaseModel
{
    /** @use SdkModel<MessageCreateParamsShape> */
    use SdkModel;
    use SdkParams;

    /**
     * The maximum number of tokens to generate before stopping.
     *
     * Note that our models may stop _before_ reaching this maximum. This parameter only specifies the absolute maximum number of tokens to generate.
     *
     * Set to `0` to populate the [prompt cache](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#pre-warming-the-cache) without generating a response.
     *
     * Different models have different maximum values for this parameter.  See [models](https://platform.claude.com/docs/en/about-claude/models/overview) for details.
     */
    #[Required('max_tokens')]
    public int $maxTokens;

    /**
     * Input messages.
     *
     * Our models are trained to operate on alternating `user` and `assistant` conversational turns. When creating a new `Message`, you specify the prior conversational turns with the `messages` parameter, and the model then generates the next `Message` in the conversation. Consecutive `user` or `assistant` turns in your request will be combined into a single turn.
     *
     * Each input message must be an object with a `role` and `content`. You can specify a single `user`-role message, or you can include multiple `user` and `assistant` messages.
     *
     * If the final message uses the `assistant` role, the response content will continue immediately from the content in that message. This can be used to constrain part of the model's response.
     *
     * Example with a single `user` message:
     *
     * ```json
     * [{"role": "user", "content": "Hello, Claude"}]
     * ```
     *
     * Example with multiple conversational turns:
     *
     * ```json
     * [
     *   {"role": "user", "content": "Hello there."},
     *   {"role": "assistant", "content": "Hi, I'm Claude. How can I help you?"},
     *   {"role": "user", "content": "Can you explain LLMs in plain English?"},
     * ]
     * ```
     *
     * Example with a partially-filled response from Claude:
     *
     * ```json
     * [
     *   {"role": "user", "content": "What's the Greek name for Sun? (A) Sol (B) Helios (C) Sun"},
     *   {"role": "assistant", "content": "The best answer is ("},
     * ]
     * ```
     *
     * Each input message `content` may be either a single `string` or an array of content blocks, where each block has a specific `type`. Using a `string` for `content` is shorthand for an array of one content block of type `"text"`. The following input messages are equivalent:
     *
     * ```json
     * {"role": "user", "content": "Hello, Claude"}
     * ```
     *
     * ```json
     * {"role": "user", "content": [{"type": "text", "text": "Hello, Claude"}]}
     * ```
     *
     * See [input examples](https://platform.claude.com/docs/en/build-with-claude/working-with-messages).
     *
     * Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices#give-claude-a-role), you can use the top-level `system` parameter — there is no `"system"` role for input messages in the Messages API.
     *
     * There is a limit of 100,000 messages in a single request.
     *
     * @var list<BetaMessageParam> $messages
     */
    #[Required(list: BetaMessageParam::class)]
    public array $messages;

    /**
     * The model that will complete your prompt.
     *
     * See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
     *
     * @var string|value-of<Model> $model
     */
    #[Required(enum: Model::class)]
    public string $model;

    /**
     * Top-level cache control automatically applies a cache_control marker to the last cacheable block in the request.
     */
    #[Optional('cache_control', nullable: true)]
    public ?BetaCacheControlEphemeral $cacheControl;

    /**
     * Container identifier for reuse across requests.
     *
     * @var ContainerVariants|null $container
     */
    #[Optional(nullable: true)]
    public string|BetaContainerParams|null $container;

    /**
     * Context management configuration.
     *
     * This allows you to control how Claude manages context across multiple requests, such as whether to clear function results or not.
     */
    #[Optional('context_management', nullable: true)]
    public ?BetaContextManagementConfig $contextManagement;

    /**
     * Request-level diagnostics. Currently carries the previous response
     * id for prompt-cache divergence reporting.
     */
    #[Optional(nullable: true)]
    public ?BetaDiagnosticsParam $diagnostics;

    /**
     * The `fallback_credit_token` from a prior refusal's `stop_details`.
     *
     * When a preceding request was refused and returned a `fallback_credit_token`,
     * pass that code here on the retry to have the retry's cache-creation tokens
     * for the prefix that was warm on the refused model billed at the cache-read
     * rate. Must be redeemed by the same organization and workspace, with the same
     * request body (optionally extended by one appended `assistant` message whose
     * content is the partial text — with any trailing whitespace stripped from
     * the final text block — and paired server-tool blocks streamed before the
     * refusal; the appended-assistant form is not available for requests with
     * `output_format` set or forced `tool_choice`), on an eligible fallback
     * model, on the same platform,
     * and within 5 minutes of the refusal; a mismatch is a 400. A token minted
     * mid-server-tool-loop whose partial content was continuable may only be
     * redeemed with the appended-assistant form — if an exact-body retry is
     * rejected with a 400 saying the token must be redeemed by continuing the
     * partial response, retry with the appended-assistant form instead.
     *
     * When the appended-assistant form is used on a model that otherwise disallows
     * assistant-turn prefill, this token also authorizes that one prefill.
     */
    #[Optional('fallback_credit_token', nullable: true)]
    public ?string $fallbackCreditToken;

    /**
     * Opt-in server-side retry on one or more substitute models when the requested model declines for policy reasons. Tried in order: if the first entry also declines, the second is tried, and so on.
     *
     * @var list<BetaFallbackParam>|null $fallbacks
     */
    #[Optional(list: BetaFallbackParam::class, nullable: true)]
    public ?array $fallbacks;

    /**
     * Specifies the geographic region for inference processing. If not specified, the workspace's `default_inference_geo` is used.
     */
    #[Optional('inference_geo', nullable: true)]
    public ?string $inferenceGeo;

    /**
     * MCP servers to be utilized in this request.
     *
     * @var list<BetaRequestMCPServerURLDefinition>|null $mcpServers
     */
    #[Optional('mcp_servers', list: BetaRequestMCPServerURLDefinition::class)]
    public ?array $mcpServers;

    /**
     * An object describing metadata about the request.
     */
    #[Optional]
    public ?BetaMetadata $metadata;

    /**
     * Configuration options for the model's output, such as the output format.
     */
    #[Optional('output_config')]
    public ?BetaOutputConfig $outputConfig;

    /**
     * @deprecated
     *
     * Deprecated: Use `output_config.format` instead. See [structured outputs](https://platform.claude.com/docs/en/build-with-claude/structured-outputs)
     *
     * A schema to specify Claude's output format in responses. This parameter will be removed in a future release.
     */
    #[Optional('output_format', nullable: true)]
    public ?BetaJSONOutputFormat $outputFormat;

    /**
     * Determines whether to use priority capacity (if available) or standard capacity for this request.
     *
     * Anthropic offers different levels of service for your API requests. See [service-tiers](https://platform.claude.com/docs/en/api/service-tiers) for details.
     *
     * @var value-of<ServiceTier>|null $serviceTier
     */
    #[Optional('service_tier', enum: ServiceTier::class)]
    public ?string $serviceTier;

    /**
     * The inference speed mode for this request. `"fast"` enables high output-tokens-per-second inference.
     *
     * @var value-of<Speed>|null $speed
     */
    #[Optional(enum: Speed::class, nullable: true)]
    public ?string $speed;

    /**
     * Custom text sequences that will cause the model to stop generating.
     *
     * Our models will normally stop when they have naturally completed their turn, which will result in a response `stop_reason` of `"end_turn"`.
     *
     * If you want the model to stop generating when it encounters custom strings of text, you can use the `stop_sequences` parameter. If the model encounters one of the custom sequences, the response `stop_reason` value will be `"stop_sequence"` and the response `stop_sequence` value will contain the matched stop sequence.
     *
     * @var list<string>|null $stopSequences
     */
    #[Optional('stop_sequences', list: 'string')]
    public ?array $stopSequences;

    /**
     * System prompt.
     *
     * A system prompt is a way of providing context and instructions to Claude, such as specifying a particular goal or role. See our [guide to system prompts](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices#give-claude-a-role).
     *
     * @var SystemVariants|null $system
     */
    #[Optional(union: System::class)]
    public string|array|null $system;

    /**
     * @deprecated Deprecated. Models released after Claude Opus 4.6 do not support setting temperature. A value of 1.0 of will be accepted for backwards compatibility, all other values will be rejected with a 400 error.
     *
     * Amount of randomness injected into the response.
     *
     * Defaults to `1.0`. Ranges from `0.0` to `1.0`. Use `temperature` closer to `0.0` for analytical / multiple choice, and closer to `1.0` for creative and generative tasks.
     *
     * Note that even with `temperature` of `0.0`, the results will not be fully deterministic.
     */
    #[Optional]
    public ?float $temperature;

    /**
     * Configuration for enabling Claude's extended thinking.
     *
     * When enabled, responses include `thinking` content blocks showing Claude's thinking process before the final answer. Requires a minimum budget of 1,024 tokens and counts towards your `max_tokens` limit.
     *
     * See [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking) for details.
     *
     * @var BetaThinkingConfigParamVariants|null $thinking
     */
    #[Optional(union: BetaThinkingConfigParam::class)]
    public BetaThinkingConfigEnabled|BetaThinkingConfigDisabled|BetaThinkingConfigAdaptive|null $thinking;

    /**
     * How the model should use the provided tools. The model can use a specific tool, any available tool, decide by itself, or not use tools at all.
     *
     * @var BetaToolChoiceVariants|null $toolChoice
     */
    #[Optional('tool_choice', union: BetaToolChoice::class)]
    public BetaToolChoiceAuto|BetaToolChoiceAny|BetaToolChoiceTool|BetaToolChoiceNone|null $toolChoice;

    /**
     * Definitions of tools that the model may use.
     *
     * If you include `tools` in your API request, the model may return `tool_use` content blocks that represent the model's use of those tools. You can then run those tools using the tool input generated by the model and then optionally return results back to the model using `tool_result` content blocks.
     *
     * There are two types of tools: **client tools** and **server tools**. The behavior described below applies to client tools. For [server tools](https://platform.claude.com/docs/en/agents-and-tools/tool-use/server-tools), see their individual documentation as each has its own behavior (e.g., the [web search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool)).
     *
     * Each tool definition includes:
     *
     * * `name`: Name of the tool.
     * * `description`: Optional, but strongly-recommended description of the tool.
     * * `input_schema`: [JSON schema](https://json-schema.org/draft/2020-12) for the tool `input` shape that the model will produce in `tool_use` output content blocks.
     *
     * For example, if you defined `tools` as:
     *
     * ```json
     * [
     *   {
     *     "name": "get_stock_price",
     *     "description": "Get the current stock price for a given ticker symbol.",
     *     "input_schema": {
     *       "type": "object",
     *       "properties": {
     *         "ticker": {
     *           "type": "string",
     *           "description": "The stock ticker symbol, e.g. AAPL for Apple Inc."
     *         }
     *       },
     *       "required": ["ticker"]
     *     }
     *   }
     * ]
     * ```
     *
     * And then asked the model "What's the S&P 500 at today?", the model might produce `tool_use` content blocks in the response like this:
     *
     * ```json
     * [
     *   {
     *     "type": "tool_use",
     *     "id": "toolu_01D7FLrfh4GYq7yT1ULFeyMV",
     *     "name": "get_stock_price",
     *     "input": { "ticker": "^GSPC" }
     *   }
     * ]
     * ```
     *
     * You might then run your `get_stock_price` tool with `{"ticker": "^GSPC"}` as an input, and return the following back to the model in a subsequent `user` message:
     *
     * ```json
     * [
     *   {
     *     "type": "tool_result",
     *     "tool_use_id": "toolu_01D7FLrfh4GYq7yT1ULFeyMV",
     *     "content": "259.75 USD"
     *   }
     * ]
     * ```
     *
     * Tools can be used for workflows that include running client-side tools and functions, or more generally whenever you want the model to produce a particular JSON structure of output.
     *
     * See our [guide](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview) for more details.
     *
     * @var list<BetaToolUnionVariants>|null $tools
     */
    #[Optional(list: BetaToolUnion::class)]
    public ?array $tools;

    /**
     * @deprecated Deprecated. Models released after Claude Opus 4.6 do not accept top_k; any value will be rejected with a 400 error.
     *
     * Only sample from the top K options for each subsequent token.
     *
     * Used to remove "long tail" low probability responses. [Learn more technical details here](https://towardsdatascience.com/how-to-sample-from-language-models-682bceb97277).
     *
     * Recommended for advanced use cases only.
     */
    #[Optional('top_k')]
    public ?int $topK;

    /**
     * @deprecated Deprecated. Models released after Claude Opus 4.6 do not support setting top_p. A value >= 0.99 will be accepted for backwards compatibility, all other values will be rejected with a 400 error.
     *
     * Use nucleus sampling.
     *
     * In nucleus sampling, we compute the cumulative distribution over all the options for each subsequent token in decreasing probability order and cut it off once it reaches a particular probability specified by `top_p`.
     *
     * Recommended for advanced use cases only.
     */
    #[Optional('top_p')]
    public ?float $topP;

    /**
     * Optional header to specify the beta version(s) you want to use.
     *
     * @var list<string|value-of<AnthropicBeta>>|null $betas
     */
    #[Optional(list: AnthropicBeta::class)]
    public ?array $betas;

    /**
     * The user profile ID to attribute this request to. Use when acting on behalf of a party other than your organization. Requires the `user-profiles` beta header.
     */
    #[Optional]
    public ?string $userProfileID;

    /**
     * `new MessageCreateParams()` is missing required properties by the API.
     *
     * To enforce required parameters use
     * ```
     * MessageCreateParams::with(maxTokens: ..., messages: ..., model: ...)
     * ```
     *
     * Otherwise ensure the following setters are called
     *
     * ```
     * (new MessageCreateParams)->withMaxTokens(...)->withMessages(...)->withModel(...)
     * ```
     */
    public function __construct()
    {
        $this->initialize();
    }

    /**
     * Construct an instance from the required parameters.
     *
     * You must use named parameters to construct any parameters with a default value.
     *
     * @param list<BetaMessageParam|BetaMessageParamShape> $messages
     * @param string|Model|value-of<Model> $model
     * @param BetaCacheControlEphemeral|BetaCacheControlEphemeralShape|null $cacheControl
     * @param ContainerShape|null $container
     * @param BetaContextManagementConfig|BetaContextManagementConfigShape|null $contextManagement
     * @param BetaDiagnosticsParam|BetaDiagnosticsParamShape|null $diagnostics
     * @param list<BetaFallbackParam|BetaFallbackParamShape>|null $fallbacks
     * @param list<BetaRequestMCPServerURLDefinition|BetaRequestMCPServerURLDefinitionShape>|null $mcpServers
     * @param BetaMetadata|BetaMetadataShape|null $metadata
     * @param BetaOutputConfig|BetaOutputConfigShape|null $outputConfig
     * @param BetaJSONOutputFormat|BetaJSONOutputFormatShape|null $outputFormat
     * @param ServiceTier|value-of<ServiceTier>|null $serviceTier
     * @param Speed|value-of<Speed>|null $speed
     * @param list<string>|null $stopSequences
     * @param SystemShape|null $system
     * @param BetaThinkingConfigParamShape|null $thinking
     * @param BetaToolChoiceShape|null $toolChoice
     * @param list<BetaToolUnionShape>|null $tools
     * @param list<string|AnthropicBeta|value-of<AnthropicBeta>>|null $betas
     */
    public static function with(
        int $maxTokens,
        array $messages,
        Model|string $model,
        BetaCacheControlEphemeral|array|null $cacheControl = null,
        string|BetaContainerParams|array|null $container = null,
        BetaContextManagementConfig|array|null $contextManagement = null,
        BetaDiagnosticsParam|array|null $diagnostics = null,
        ?string $fallbackCreditToken = null,
        ?array $fallbacks = null,
        ?string $inferenceGeo = null,
        ?array $mcpServers = null,
        BetaMetadata|array|null $metadata = null,
        BetaOutputConfig|array|null $outputConfig = null,
        BetaJSONOutputFormat|array|null $outputFormat = null,
        ServiceTier|string|null $serviceTier = null,
        Speed|string|null $speed = null,
        ?array $stopSequences = null,
        string|array|null $system = null,
        ?float $temperature = null,
        BetaThinkingConfigEnabled|array|BetaThinkingConfigDisabled|BetaThinkingConfigAdaptive|null $thinking = null,
        BetaToolChoiceAuto|array|BetaToolChoiceAny|BetaToolChoiceTool|BetaToolChoiceNone|null $toolChoice = null,
        ?array $tools = null,
        ?int $topK = null,
        ?float $topP = null,
        ?array $betas = null,
        ?string $userProfileID = null,
    ): self {
        $self = new self;

        $self['maxTokens'] = $maxTokens;
        $self['messages'] = $messages;
        $self['model'] = $model;

        null !== $cacheControl && $self['cacheControl'] = $cacheControl;
        null !== $container && $self['container'] = $container;
        null !== $contextManagement && $self['contextManagement'] = $contextManagement;
        null !== $diagnostics && $self['diagnostics'] = $diagnostics;
        null !== $fallbackCreditToken && $self['fallbackCreditToken'] = $fallbackCreditToken;
        null !== $fallbacks && $self['fallbacks'] = $fallbacks;
        null !== $inferenceGeo && $self['inferenceGeo'] = $inferenceGeo;
        null !== $mcpServers && $self['mcpServers'] = $mcpServers;
        null !== $metadata && $self['metadata'] = $metadata;
        null !== $outputConfig && $self['outputConfig'] = $outputConfig;
        null !== $outputFormat && $self['outputFormat'] = $outputFormat;
        null !== $serviceTier && $self['serviceTier'] = $serviceTier;
        null !== $speed && $self['speed'] = $speed;
        null !== $stopSequences && $self['stopSequences'] = $stopSequences;
        null !== $system && $self['system'] = $system;
        null !== $temperature && $self['temperature'] = $temperature;
        null !== $thinking && $self['thinking'] = $thinking;
        null !== $toolChoice && $self['toolChoice'] = $toolChoice;
        null !== $tools && $self['tools'] = $tools;
        null !== $topK && $self['topK'] = $topK;
        null !== $topP && $self['topP'] = $topP;
        null !== $betas && $self['betas'] = $betas;
        null !== $userProfileID && $self['userProfileID'] = $userProfileID;

        return $self;
    }

    /**
     * The maximum number of tokens to generate before stopping.
     *
     * Note that our models may stop _before_ reaching this maximum. This parameter only specifies the absolute maximum number of tokens to generate.
     *
     * Set to `0` to populate the [prompt cache](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#pre-warming-the-cache) without generating a response.
     *
     * Different models have different maximum values for this parameter.  See [models](https://platform.claude.com/docs/en/about-claude/models/overview) for details.
     */
    public function withMaxTokens(int $maxTokens): self
    {
        $self = clone $this;
        $self['maxTokens'] = $maxTokens;

        return $self;
    }

    /**
     * Input messages.
     *
     * Our models are trained to operate on alternating `user` and `assistant` conversational turns. When creating a new `Message`, you specify the prior conversational turns with the `messages` parameter, and the model then generates the next `Message` in the conversation. Consecutive `user` or `assistant` turns in your request will be combined into a single turn.
     *
     * Each input message must be an object with a `role` and `content`. You can specify a single `user`-role message, or you can include multiple `user` and `assistant` messages.
     *
     * If the final message uses the `assistant` role, the response content will continue immediately from the content in that message. This can be used to constrain part of the model's response.
     *
     * Example with a single `user` message:
     *
     * ```json
     * [{"role": "user", "content": "Hello, Claude"}]
     * ```
     *
     * Example with multiple conversational turns:
     *
     * ```json
     * [
     *   {"role": "user", "content": "Hello there."},
     *   {"role": "assistant", "content": "Hi, I'm Claude. How can I help you?"},
     *   {"role": "user", "content": "Can you explain LLMs in plain English?"},
     * ]
     * ```
     *
     * Example with a partially-filled response from Claude:
     *
     * ```json
     * [
     *   {"role": "user", "content": "What's the Greek name for Sun? (A) Sol (B) Helios (C) Sun"},
     *   {"role": "assistant", "content": "The best answer is ("},
     * ]
     * ```
     *
     * Each input message `content` may be either a single `string` or an array of content blocks, where each block has a specific `type`. Using a `string` for `content` is shorthand for an array of one content block of type `"text"`. The following input messages are equivalent:
     *
     * ```json
     * {"role": "user", "content": "Hello, Claude"}
     * ```
     *
     * ```json
     * {"role": "user", "content": [{"type": "text", "text": "Hello, Claude"}]}
     * ```
     *
     * See [input examples](https://platform.claude.com/docs/en/build-with-claude/working-with-messages).
     *
     * Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices#give-claude-a-role), you can use the top-level `system` parameter — there is no `"system"` role for input messages in the Messages API.
     *
     * There is a limit of 100,000 messages in a single request.
     *
     * @param list<BetaMessageParam|BetaMessageParamShape> $messages
     */
    public function withMessages(array $messages): self
    {
        $self = clone $this;
        $self['messages'] = $messages;

        return $self;
    }

    /**
     * The model that will complete your prompt.
     *
     * See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
     *
     * @param string|Model|value-of<Model> $model
     */
    public function withModel(Model|string $model): self
    {
        $self = clone $this;
        $self['model'] = $model;

        return $self;
    }

    /**
     * Top-level cache control automatically applies a cache_control marker to the last cacheable block in the request.
     *
     * @param BetaCacheControlEphemeral|BetaCacheControlEphemeralShape|null $cacheControl
     */
    public function withCacheControl(
        BetaCacheControlEphemeral|array|null $cacheControl
    ): self {
        $self = clone $this;
        $self['cacheControl'] = $cacheControl;

        return $self;
    }

    /**
     * Container identifier for reuse across requests.
     *
     * @param ContainerShape|null $container
     */
    public function withContainer(
        string|BetaContainerParams|array|null $container
    ): self {
        $self = clone $this;
        $self['container'] = $container;

        return $self;
    }

    /**
     * Context management configuration.
     *
     * This allows you to control how Claude manages context across multiple requests, such as whether to clear function results or not.
     *
     * @param BetaContextManagementConfig|BetaContextManagementConfigShape|null $contextManagement
     */
    public function withContextManagement(
        BetaContextManagementConfig|array|null $contextManagement
    ): self {
        $self = clone $this;
        $self['contextManagement'] = $contextManagement;

        return $self;
    }

    /**
     * Request-level diagnostics. Currently carries the previous response
     * id for prompt-cache divergence reporting.
     *
     * @param BetaDiagnosticsParam|BetaDiagnosticsParamShape|null $diagnostics
     */
    public function withDiagnostics(
        BetaDiagnosticsParam|array|null $diagnostics
    ): self {
        $self = clone $this;
        $self['diagnostics'] = $diagnostics;

        return $self;
    }

    /**
     * The `fallback_credit_token` from a prior refusal's `stop_details`.
     *
     * When a preceding request was refused and returned a `fallback_credit_token`,
     * pass that code here on the retry to have the retry's cache-creation tokens
     * for the prefix that was warm on the refused model billed at the cache-read
     * rate. Must be redeemed by the same organization and workspace, with the same
     * request body (optionally extended by one appended `assistant` message whose
     * content is the partial text — with any trailing whitespace stripped from
     * the final text block — and paired server-tool blocks streamed before the
     * refusal; the appended-assistant form is not available for requests with
     * `output_format` set or forced `tool_choice`), on an eligible fallback
     * model, on the same platform,
     * and within 5 minutes of the refusal; a mismatch is a 400. A token minted
     * mid-server-tool-loop whose partial content was continuable may only be
     * redeemed with the appended-assistant form — if an exact-body retry is
     * rejected with a 400 saying the token must be redeemed by continuing the
     * partial response, retry with the appended-assistant form instead.
     *
     * When the appended-assistant form is used on a model that otherwise disallows
     * assistant-turn prefill, this token also authorizes that one prefill.
     */
    public function withFallbackCreditToken(?string $fallbackCreditToken): self
    {
        $self = clone $this;
        $self['fallbackCreditToken'] = $fallbackCreditToken;

        return $self;
    }

    /**
     * Opt-in server-side retry on one or more substitute models when the requested model declines for policy reasons. Tried in order: if the first entry also declines, the second is tried, and so on.
     *
     * @param list<BetaFallbackParam|BetaFallbackParamShape>|null $fallbacks
     */
    public function withFallbacks(?array $fallbacks): self
    {
        $self = clone $this;
        $self['fallbacks'] = $fallbacks;

        return $self;
    }

    /**
     * Specifies the geographic region for inference processing. If not specified, the workspace's `default_inference_geo` is used.
     */
    public function withInferenceGeo(?string $inferenceGeo): self
    {
        $self = clone $this;
        $self['inferenceGeo'] = $inferenceGeo;

        return $self;
    }

    /**
     * MCP servers to be utilized in this request.
     *
     * @param list<BetaRequestMCPServerURLDefinition|BetaRequestMCPServerURLDefinitionShape> $mcpServers
     */
    public function withMCPServers(array $mcpServers): self
    {
        $self = clone $this;
        $self['mcpServers'] = $mcpServers;

        return $self;
    }

    /**
     * An object describing metadata about the request.
     *
     * @param BetaMetadata|BetaMetadataShape $metadata
     */
    public function withMetadata(BetaMetadata|array $metadata): self
    {
        $self = clone $this;
        $self['metadata'] = $metadata;

        return $self;
    }

    /**
     * Configuration options for the model's output, such as the output format.
     *
     * @param BetaOutputConfig|BetaOutputConfigShape $outputConfig
     */
    public function withOutputConfig(BetaOutputConfig|array $outputConfig): self
    {
        $self = clone $this;
        $self['outputConfig'] = $outputConfig;

        return $self;
    }

    /**
     * Deprecated: Use `output_config.format` instead. See [structured outputs](https://platform.claude.com/docs/en/build-with-claude/structured-outputs).
     *
     * A schema to specify Claude's output format in responses. This parameter will be removed in a future release.
     *
     * @param BetaJSONOutputFormat|BetaJSONOutputFormatShape|null $outputFormat
     */
    public function withOutputFormat(
        BetaJSONOutputFormat|array|null $outputFormat
    ): self {
        $self = clone $this;
        $self['outputFormat'] = $outputFormat;

        return $self;
    }

    /**
     * Determines whether to use priority capacity (if available) or standard capacity for this request.
     *
     * Anthropic offers different levels of service for your API requests. See [service-tiers](https://platform.claude.com/docs/en/api/service-tiers) for details.
     *
     * @param ServiceTier|value-of<ServiceTier> $serviceTier
     */
    public function withServiceTier(ServiceTier|string $serviceTier): self
    {
        $self = clone $this;
        $self['serviceTier'] = $serviceTier;

        return $self;
    }

    /**
     * The inference speed mode for this request. `"fast"` enables high output-tokens-per-second inference.
     *
     * @param Speed|value-of<Speed>|null $speed
     */
    public function withSpeed(Speed|string|null $speed): self
    {
        $self = clone $this;
        $self['speed'] = $speed;

        return $self;
    }

    /**
     * Custom text sequences that will cause the model to stop generating.
     *
     * Our models will normally stop when they have naturally completed their turn, which will result in a response `stop_reason` of `"end_turn"`.
     *
     * If you want the model to stop generating when it encounters custom strings of text, you can use the `stop_sequences` parameter. If the model encounters one of the custom sequences, the response `stop_reason` value will be `"stop_sequence"` and the response `stop_sequence` value will contain the matched stop sequence.
     *
     * @param list<string> $stopSequences
     */
    public function withStopSequences(array $stopSequences): self
    {
        $self = clone $this;
        $self['stopSequences'] = $stopSequences;

        return $self;
    }

    /**
     * System prompt.
     *
     * A system prompt is a way of providing context and instructions to Claude, such as specifying a particular goal or role. See our [guide to system prompts](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices#give-claude-a-role).
     *
     * @param SystemShape $system
     */
    public function withSystem(string|array $system): self
    {
        $self = clone $this;
        $self['system'] = $system;

        return $self;
    }

    /**
     * Amount of randomness injected into the response.
     *
     * Defaults to `1.0`. Ranges from `0.0` to `1.0`. Use `temperature` closer to `0.0` for analytical / multiple choice, and closer to `1.0` for creative and generative tasks.
     *
     * Note that even with `temperature` of `0.0`, the results will not be fully deterministic.
     */
    public function withTemperature(float $temperature): self
    {
        $self = clone $this;
        $self['temperature'] = $temperature;

        return $self;
    }

    /**
     * Configuration for enabling Claude's extended thinking.
     *
     * When enabled, responses include `thinking` content blocks showing Claude's thinking process before the final answer. Requires a minimum budget of 1,024 tokens and counts towards your `max_tokens` limit.
     *
     * See [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking) for details.
     *
     * @param BetaThinkingConfigParamShape $thinking
     */
    public function withThinking(
        BetaThinkingConfigEnabled|array|BetaThinkingConfigDisabled|BetaThinkingConfigAdaptive $thinking,
    ): self {
        $self = clone $this;
        $self['thinking'] = $thinking;

        return $self;
    }

    /**
     * How the model should use the provided tools. The model can use a specific tool, any available tool, decide by itself, or not use tools at all.
     *
     * @param BetaToolChoiceShape $toolChoice
     */
    public function withToolChoice(
        BetaToolChoiceAuto|array|BetaToolChoiceAny|BetaToolChoiceTool|BetaToolChoiceNone $toolChoice,
    ): self {
        $self = clone $this;
        $self['toolChoice'] = $toolChoice;

        return $self;
    }

    /**
     * Definitions of tools that the model may use.
     *
     * If you include `tools` in your API request, the model may return `tool_use` content blocks that represent the model's use of those tools. You can then run those tools using the tool input generated by the model and then optionally return results back to the model using `tool_result` content blocks.
     *
     * There are two types of tools: **client tools** and **server tools**. The behavior described below applies to client tools. For [server tools](https://platform.claude.com/docs/en/agents-and-tools/tool-use/server-tools), see their individual documentation as each has its own behavior (e.g., the [web search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool)).
     *
     * Each tool definition includes:
     *
     * * `name`: Name of the tool.
     * * `description`: Optional, but strongly-recommended description of the tool.
     * * `input_schema`: [JSON schema](https://json-schema.org/draft/2020-12) for the tool `input` shape that the model will produce in `tool_use` output content blocks.
     *
     * For example, if you defined `tools` as:
     *
     * ```json
     * [
     *   {
     *     "name": "get_stock_price",
     *     "description": "Get the current stock price for a given ticker symbol.",
     *     "input_schema": {
     *       "type": "object",
     *       "properties": {
     *         "ticker": {
     *           "type": "string",
     *           "description": "The stock ticker symbol, e.g. AAPL for Apple Inc."
     *         }
     *       },
     *       "required": ["ticker"]
     *     }
     *   }
     * ]
     * ```
     *
     * And then asked the model "What's the S&P 500 at today?", the model might produce `tool_use` content blocks in the response like this:
     *
     * ```json
     * [
     *   {
     *     "type": "tool_use",
     *     "id": "toolu_01D7FLrfh4GYq7yT1ULFeyMV",
     *     "name": "get_stock_price",
     *     "input": { "ticker": "^GSPC" }
     *   }
     * ]
     * ```
     *
     * You might then run your `get_stock_price` tool with `{"ticker": "^GSPC"}` as an input, and return the following back to the model in a subsequent `user` message:
     *
     * ```json
     * [
     *   {
     *     "type": "tool_result",
     *     "tool_use_id": "toolu_01D7FLrfh4GYq7yT1ULFeyMV",
     *     "content": "259.75 USD"
     *   }
     * ]
     * ```
     *
     * Tools can be used for workflows that include running client-side tools and functions, or more generally whenever you want the model to produce a particular JSON structure of output.
     *
     * See our [guide](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview) for more details.
     *
     * @param list<BetaToolUnionShape> $tools
     */
    public function withTools(array $tools): self
    {
        $self = clone $this;
        $self['tools'] = $tools;

        return $self;
    }

    /**
     * Only sample from the top K options for each subsequent token.
     *
     * Used to remove "long tail" low probability responses. [Learn more technical details here](https://towardsdatascience.com/how-to-sample-from-language-models-682bceb97277).
     *
     * Recommended for advanced use cases only.
     */
    public function withTopK(int $topK): self
    {
        $self = clone $this;
        $self['topK'] = $topK;

        return $self;
    }

    /**
     * Use nucleus sampling.
     *
     * In nucleus sampling, we compute the cumulative distribution over all the options for each subsequent token in decreasing probability order and cut it off once it reaches a particular probability specified by `top_p`.
     *
     * Recommended for advanced use cases only.
     */
    public function withTopP(float $topP): self
    {
        $self = clone $this;
        $self['topP'] = $topP;

        return $self;
    }

    /**
     * Optional header to specify the beta version(s) you want to use.
     *
     * @param list<string|AnthropicBeta|value-of<AnthropicBeta>> $betas
     */
    public function withBetas(array $betas): self
    {
        $self = clone $this;
        $self['betas'] = $betas;

        return $self;
    }

    /**
     * The user profile ID to attribute this request to. Use when acting on behalf of a party other than your organization. Requires the `user-profiles` beta header.
     */
    public function withUserProfileID(string $userProfileID): self
    {
        $self = clone $this;
        $self['userProfileID'] = $userProfileID;

        return $self;
    }
}
