Real-Time API for Public Social Data — Affordable, No Limits

# twitterapi.io > twitterapi.io is a Twitter/X data API for AI agents and developers. Search tweets, fetch user profiles, get followers/following, replies, retweeters, trends, and perform authenticated actions (post, like, follow, DM) via a single `x-api-key` header — no OAuth, no Twitter Developer approval, no rate-limit hell. ## What it is Pay-per-call REST API on top of normalized Twitter/X data. Three product surfaces, one billing model (free tier on signup): 1. **REST API** — `api.twitterapi.io` — read/write tweets, users, followers, communities, lists, DMs. Verified against live X. 2. **Stream Service** — webhook + WebSocket — push new tweets matching keywords or user filters within seconds. 3. **MCP Server** — `mcp.twitterapi.io/mcp` — same 12 read tools exposed as MCP tools for Claude.ai, Claude Code, Cursor, Gemini CLI, ChatGPT (via custom connectors). ## For AI agents - **MCP manifest**: <https://twitterapi.io/.well-known/mcp.json> - **MCP tools catalog**: <https://twitterapi.io/.well-known/mcp/tools.json> - **Agent Skills index**: <https://twitterapi.io/.well-known/agent-skills/index.json> - **Long-form docs**: <https://twitterapi.io/llms-full.txt> - **Discovery pointer**: <https://twitterapi.io/discovery.txt> ## Install / Connect ### Claude.ai Web Connector Settings → Connectors → Add custom connector → URL `https://mcp.twitterapi.io/mcp` → paste your twitterapi.io API key when prompted. ### Claude Code CLI ``` claude mcp add --transport http --scope user twitterapi-mcp \ https://mcp.twitterapi.io/mcp \ --header "Authorization: Bearer YOUR_API_KEY" ``` ### Stdio (Claude Desktop) ``` npx -y @twitterapi_io/mcp-server ``` Set `TWITTERAPI_IO_API_KEY` env var. ### Anthropic Skill (any agent that reads SKILL.md) ``` npx skills add kaitoInfra/twitterapi-io ``` ## Pricing Pay per request, no monthly minimum, free tier on signup. | Operation | Price | |---|---| | Tweet read (advanced search, by id, replies) | $0.15 / 1,000

{ "x-comment": "TwitterAPI.io OpenAPI Specification - This file defines the API endpoints for the TwitterAPI.io service.", "openapi": "3.0.1", "info": { "title": "TwitterAPI.io the most stable/fastest/cheapest twitter api.", "description": "Provide the most stable/fastest/cheapest twitter api.", "license": { "name": "MIT" }, "version": "1.0.0" }, "servers": [ { "url": "https://api.twitterapi.io" } ], "security": [ { "ApiKeyAuth": []