goodnight000 / api-anything

# API Anything
**Teach your agent a website once. After that, it calls the site like an API instead of driving a browser.**
API Anything watches a site's own page make a request and learns which parts of it are your
inputs. It saves the result as an operation. Your agent calls that operation with new inputs
over MCP, the CLI or TypeScript, and gets JSON back over plain HTTP.
 Same agent (Claude Opus 5.5), same prompt, started together. Left: it drives headless Chrome
through Playwright MCP. Right: it calls API Anything's Google Flights operation. Shown at 3× speed with no cuts;
the timers show real elapsed time. Recorded 2026-09-28. MP4 · how it was recorded 
Across 5 runs of each task, the agent using API Anything answered 1.5 to 2× sooner, read about
half as many tokens, and cost the same or less. All 20 answers were correct.
Method, raw numbers and limits.
## Install
Paste this into Claude Code, Codex or another coding agent:
 [code] 
The agent checks Node 22.13+, builds and installs the `api-anything` command, confirms that a
call works, then connects the MCP server and the skill to itself. Restart the agent, then ask it
something like "What does Goodreads rate Piranesi?"
 Install by hand 
The package isn't on npm yet. Don't use `npm install -g github:...`, because it fails under npm 11.
 [code] 
 [code] 
`tier: 1` means plain HTTP with no browser. A failure returns `ok: false` with a `class`, a
`reason` and a `next` step. Connect an agent with `codex mcp add api-anything -- api-anything mcp`,
`claude mcp add --scope user api-anything -- api-anything mcp`, or this MCP entry:
 [code] 
Over MCP an agent **calls** operations, using four tools: `list_sites`, `list_operations`,
`call_operation` and `login`. To **create** operations, an agent needs a shell and the
skill. A Chromium browser is needed only for creating operations
and for the browser tier — Google Chrome by default, or Brave, Edge, Chromium, Vivaldi, Arc; any
Chromium executable works via `API_ANYTHING_BROWSER`. Setup details.
## Teach it a new site
Give it the page URL with a placeholder, and two example inputs:
 [code] 
The headless browser loads the page once for each example. The part of the request that changed with
the input becomes a parameter, and the rest is stored as a template. The agent (or you) picks the
request and the fields. API Anything builds the template without an LLM.
Recorded demos.
## Map a site from an intent
Tell an agent what you need from a site. The skill makes it do
this, in order:
1. Ask about whatever the request leaves unclear.
2. Propose operations and wait for your approval.
3. Scout each page with `capture --outline`. This is a summary of what each request returns, so
 the agent doesn't have to read full responses.
4. Build each operation and check it with an input that wasn't an example.
Goodreads has had no public API since 2020. One run took 6.3 minutes and $1.19. It produced
search, book details, an author's books and reviews:
 [code] 
- **Tested