API Mapping

API Mapping is an Automation skill for Claude Code, published by vellum-ai in vellum-assistant.

1.1K stars160 forkson vellum-ai/vellum-assistantAdded 2026/08/20+1% in starsRepository updated 2026/08/20

agentagentic-aiai-assistantanthropicautonomous-agentsclaudeclaude-codeiosmacosmemoryopen-sourceopenaiopenclawproactive-aislacktelegram-botvellum-ai

Install in seconds

Install API Mapping

Copy API Mapping into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/vellum-ai/vellum-assistant/tree/main/skills/api-mapping ~/.claude/skills/api-mapping

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/vellum-ai/vellum-assistant.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/api-mapping/SKILL.md in vellum-ai/vellum-assistant
Installs to: ~/.claude/skills/api-mapping
Collection: One of 25 skills cataloged from this repository
Category: Automation — 1523 skills

What API Mapping does

API Mapping records and analyzes the API surface of any web service using a CLI that drives a browser to capture network traffic. Use it to discover endpoints, auth patterns, and CRUD operations when integrating with a service.

API Mapping is cataloged under Automation on DirSkills. API Mapping comes from a repository tagged agent, agentic-ai, ai-assistant, anthropic and autonomous-agents.

Documentation

README

Excerpt

You can record and analyze the API surface of any web service using the map CLI.

CLI Setup

IMPORTANT: Always use host_bash (not bash) for all map commands. The API mapping CLI needs host access for Chrome CDP, network recording, and browser automation - none of which are available inside the sandbox.

map is a CLI tool that should be available on your PATH. Do NOT search for the binary or try to discover how the CLI works. Just run the commands as documented below.

Typical Flow

When the user wants to map a web service's API (e.g. "Map the Notion API" or "Figure out how Figma's API works"):

This is the opening of the README. Read the full README on GitHub.

Frequently asked about API Mapping

What else does vellum-ai publish alongside API Mapping?
API Mapping is one of 25 skills that DirSkills catalogs from vellum-ai/vellum-assistant, the repository it ships in. Its siblings there include Amazon Shopping, Assistant Migration and CLI Discovery. Each one is a separate skill with its own page in this directory, installs the same way API Mapping does, and is maintained by vellum-ai in that same repository. The rest of the collection is listed on the vellum-ai/vellum-assistant page.
How does API Mapping compare to other Automation skills?
API Mapping ranks #760 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of API Mapping against them. Open each page to compare what they document and how they install.