apitap

Overview

ApiTap is a versatile CLI, MCP server, and npm library that transforms websites into APIs without requiring documentation or browser automation. It offers three methods for building API knowledge: importing OpenAPI specs from APIs.guru, capturing API traffic via browser, and automatically discovering APIs from common frameworks. The system generates portable skill files that allow AI agents to interact with websites through fetch() calls rather than browsers, significantly reducing token costs (20-100x) compared to traditional browser automation. With 6,400+ pre-mapped endpoints across 280+ APIs like Stripe, GitHub, and Spotify, it's ready to use immediately after installation.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• apitap_browse

  High-level "just get me the data" (discover + replay in one call)

  Try:Browse reddit.com/r/programmingTry:Get data from the latest Hacker News posts
• apitap_peek

  Zero-cost URL triage (HEAD only)

  Try:Check if polymarket.com is accessibleTry:Peek at the structure of github.com
• apitap_read

  Extract content without a browser (7 decoders)

  Try:Read the content of en.wikipedia.org/wiki/Node.jsTry:Get the text from a YouTube video
• apitap_discover

  Detect a site's APIs without launching a browser

  Try:Discover APIs on polymarket.comTry:Find available endpoints on github.com
• apitap_search

  Search available skill files

  Try:Search for stripe in my available APIsTry:Find all APIs related to payment
• apitap_replay

  Replay a captured API endpoint

  Try:Replay stripe.com get charges with limit 10Try:Get events from gamma-api.polymarket.com
• apitap_replay_batch

  Replay multiple endpoints in parallel across domains

  Try:Get stripe charges and github issues in parallelTry:Fetch data from multiple APIs simultaneously
• apitap_capture

  Capture API traffic via instrumented browser

  Try:Capture API calls from polymarket.comTry:Get all API calls from twitter.com
• apitap_capture_start

  Start an interactive capture session

  Try:Start capturing API traffic from github.comTry:Begin a new capture session
• apitap_capture_interact

  Interact with a live capture session (click, type, scroll)

  Try:In the capture session, click on the login buttonTry:Scroll down to load more content
• apitap_capture_finish

  Finish or abort a capture session

  Try:Finish the current capture sessionTry:Abort the capture without saving
• apitap_auth_request

  Request human authentication for a site

  Try:I need to authenticate with github.comTry:Request login for twitter.com

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Installation

# Install globally
npm install -g @apitap/core

# Start the MCP server
apitap mcp

# For Claude Desktop, add to your MCP config:
{
  "mcpServers": {
    "apitap": {
      "command": "apitap",
      "args": ["mcp"]
    }
  }
}

npx playwright install chromium

FAQ

How does ApiTap differ from browser automation tools like Playwright?

ApiTap captures API traffic once and allows agents to call endpoints directly via fetch(), reducing token costs by 20-100x compared to browser automation which requires DOM parsing and selector handling.

Does ApiTap require reverse-engineering APIs manually?

No, ApiTap automates API discovery through three methods: importing OpenAPI specs, capturing browser traffic via CDP, and auto-detecting common frameworks. All methods generate reusable skill files.

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