Anthropic

Anthropic Messages API

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 supports text, images, tool use, extended thinking, streaming, and structured output.

GitHub OpenAPI

Documentation

📖
Documentation
https://docs.anthropic.com/en/api/messages
📖
Documentation
https://docs.anthropic.com/en/api/messages-streaming

Specifications

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OpenAPI
https://raw.githubusercontent.com/api-evangelist/anthropic/refs/heads/main/openapi/anthropic-messages-api-openapi.yml

Schemas & Data

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JSONSchema
https://raw.githubusercontent.com/api-evangelist/anthropic/refs/heads/main/json-schema/anthropic-message-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/anthropic/refs/heads/main/json-schema/anthropic-tool-use-schema.json

Other Resources

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JSONLD
https://raw.githubusercontent.com/api-evangelist/anthropic/refs/heads/main/json-ld/anthropic-context.jsonld