Web fetch tool extension for the pi coding agent. It retrieves a URL and returns the response as markdown, plain text, or raw HTML with bounded timeout and response-size controls.
This package follows the pi extension structure used by pi-lsp-client and mirrors the simple webfetch contract from opencode: url, optional format, and optional timeout.
> Fetch https://example.com as markdown.
[webfetch] https://example.com [markdown]
200 OK • markdown • 1.2 KB converted
# Example Domain
This domain is for use in illustrative examples in documents.
> Fetch https://example.com as html.
[webfetch] https://example.com [html]
200 OK • html • 1.2 KB
<!doctype html>
<html>
The package targets the pi coding agent. Pi loads extensions from ~/.pi/agent/extensions/, project .pi/extensions/, or via the --extension / -e CLI flag.
# 1. From npm (once published) pi install npm:@code-yeongyu/pi-webfetch # 2. From git pi install git:github.com/code-yeongyu/pi-webfetch # 3. Manual placement git clone https://github.com/code-yeongyu/pi-webfetch ~/.pi/agent/extensions/pi-webfetch cd ~/.pi/agent/extensions/pi-webfetch && npm install # 4. Dev / one-shot test pi -e /path/to/pi-webfetch/src/index.ts
After installation, restart pi or run /reload inside an interactive session. The webfetch tool registers automatically.
Fetches content from a URL and returns it in the requested format. The tool is read-only and does not modify files.
| Parameter | Type | Description |
|---|---|---|
url |
string (required) |
URL to fetch. Must start with http:// or https://. |
format |
"markdown" | "text" | "html" (optional) |
Output format. Default markdown. |
timeout |
number (optional) |
Timeout in seconds. Defaults to 30; capped at 120. |
HTML responses are converted when format is markdown or text. Non-HTML responses are returned as decoded UTF-8. Raw HTML is returned unchanged when format is html.
- Timeout: 30 seconds by default, capped at 120 seconds.
- Response size: 5 MB maximum, checked by
Content-Lengthand while reading the body. - Accept negotiation: sends an
Acceptheader weighted for the requested format. - User-Agent: uses a browser-like user agent, with one Cloudflare challenge retry using
pi-webfetch. - TUI rendering: compact output shows status, format, size, conversion state, and a short preview; expanded output includes final URL and content type.
git clone https://github.com/code-yeongyu/pi-webfetch cd pi-webfetch npm install npm test npm run typecheck npm run check pi -e ./src/index.ts
The test suite uses vitest. Test descriptions follow #given .. #when .. #then style; bodies use plain // given / // when / // then comments. TypeScript is strict, Node-only, and uses ESM imports with .js suffixes.
MIT.
- senpi — the fork/runtime these extensions are extracted from.
- Ultraworkers Discord — community link from the senpi README.
- Dori — the product powered by senpi under the hood.