Claude · Postman Collection

Claude Messages API

Anthropic's Claude Messages API for sending messages to Claude models and receiving responses. Includes endpoints for creating messages, counting tokens, managing message batches, and listing available models. Contact Support: Name: Anthropic Support Email: support@anthropic.com

10
Requests
8
Folders
View on GitHub Raw JSON Artificial IntelligenceChatbotsConversational AIGenerative AILarge Language ModelsMachine-LearningNatural Language ProcessingPostman Collection

Overview

Claude Messages API is a Postman Collection published by Claude on the APIs.io network.

Anthropic’s Claude Messages API for sending messages to Claude models and receiving responses. Includes endpoints for creating messages, counting tokens, managing message batches, and listing available models. Contact Support: Name: Anthropic Support Email: support@anthropic.com

The collection contains 10 requests organised into 8 folders.

Tagged areas include Artificial Intelligence, Chatbots, Conversational AI, Generative AI, and Large Language Models.

Requests & Folders

messages
models

Related API Specs

Claude Message Batches API (OpenAPI) Claude Models API (OpenAPI) Claude Message Batches API (OpenAPI) Claude Messages API (OpenAPI) Claude Models API (OpenAPI)
Back to Claude · All Collections · GitHub

Work with this as data

Every collection here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for collections

4 MCP tools reach this
  • find_collectionsBrowse and filter every collection in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This collection 
curl "https://apis.io/api/v1/collections/postman-claude-messages-api"
All collections 
curl "https://apis.io/api/v1/collections?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.