Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Tool description

WebFetch, as sent

SDK-CLI Agent SDK, print mode, v2.1.270. One model string produces this prompt.

As described in the system reminder: read empty request, not the ordinary one.

Lines6469 characters
Moved+0−0 against v2.1.269
Reach1model strings receive this description
Copies1distinct descriptions under this name
Parameters22 of them required Tools in captureall of themevery description on this arm
Plain text · sha256 28495ef9c5ab

The description, line by line

6 lines Line numbers are v2.1.269 on the left and this capture on the right.
1 1 Fetches a URL, converts the page to markdown, and answers `prompt` against it using a small fast model.
2 2
3 3 - Fails on authenticated/private URLs — use an authenticated MCP tool or `gh` for those instead.
4 4 - Fails on localhost and other hostnames without a dot; for a local server, use curl via Bash.
5 5 - HTTP is upgraded to HTTPS. Cross-host redirects are returned to you rather than followed; call again with the redirect URL.
6 6 - Responses are cached for 15 minutes per URL.

What it accepts

2 parameters The JSON parameter schema sent beside this description, 380 characters of it. Name, type, then whether the client marked it required.
prompt string required The prompt to run on the fetched content
url string required The URL to fetch content from

sha256 79f70c017c3b · the schema as the client sent it:

{ "$schema": "https://json-schema.org/draft/2020-12/schema", "additionalProperties": false, "properties": { "prompt": { "description": "The prompt to run on the fetched content", "type": "string" }, "url": { "description": "The URL to fetch content from", "format": "uri", "type": "string" } }, "required": [ "url", "prompt" ], "type": "object" }