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inference-hooks-endpoint changedmanage-claude/inference-hooks-endpoint

Nearest release: v2.1.307, published an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

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Lines+30added
Lines−7removed
From line 258 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits17to this page, all time

The whole hunk

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258258 
259259`tool_info` says who runs or provides the tool, not what the tool can reach. It is one of four kinds, told apart by its `type` field, and each kind carries its own fields. Anthropic sends the first of the following kinds that fits the tool. New kinds may appear: accept a `type` you don't recognize, and for such a kind rely only on `type`.
260260 
261An optional field that doesn't apply is left out, never `null`, so a `tool_info` can be just `{"type": "client"}`. `tool_name` is chosen by whoever defined the tool, and a server's `toolset_name` by whoever wrote the request, so don't treat either as a trust boundary.
261An optional field that doesn't apply is left out, never `null`, so a `tool_info` can be just `{"type": "client"}`. `tool_name` is chosen by whoever defined the tool, and a server's `toolset_name` by whoever wrote the request or named the connector. Don't treat either as a trust boundary.
262262 
263263### Platform tools
264264 
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301301 
302302A third-party tool is one on a server that Anthropic knows of, such as a claude.ai connector or an MCP server that the request names in `mcp_servers`. This doesn't mean Anthropic has vetted the server. In voice mode, a call to a claude.ai connector's tool is `"client"` instead.
303303 
304| Field | Present | Description |
305| ----------------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
306| `type` | Always | `"third_party"` |
307| `toolset_name` | Optional | The name the request gives the server. |
308| `origin` | Optional | The scheme, host, and non-default port of the server's URL. It can be a private or local address, `localhost` included. An absent `origin` means unknown, not safe. |
309| `verified_origin` | Whenever `origin` is | `true` only when Anthropic's servers connect to the server themselves. Treat `false` as an origin that Anthropic hasn't confirmed. |
304| Field | Present | Description |
305| ----------------- | -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
306| `type` | Always | `"third_party"` |
307| `toolset_name` | Optional | For a server in `mcp_servers`, the name the request gives the server. For any other server, such as a claude.ai connector, the server's name, copied from `tool_name`. |
308| `origin` | Optional | The scheme, host, and non-default port of the server's URL. It can be a private or local address, `localhost` included. An absent `origin` means unknown, not safe. |
309| `verified_origin` | Whenever `origin` is | `true` only when Anthropic's servers connect to the server themselves. Treat `false` as an origin that Anthropic hasn't confirmed. |
310310 
311311A `tool_use` block for a tool on an MCP server that the request names `crm` in `mcp_servers`:
312312 
from line 326
326326 }
327327}
328328```
329 
330A `tool_use` block for a tool on a Gmail connector, called in a claude.ai chat:
331 
332```json
333{
334 "type": "tool_use",
335 "id": "toolu_01DeFgHiJkLmNoPqRsTuVwXy",
336 "tool_name": "mcp__Gmail__search_threads",
337 "input": {
338 "query": "from:[email protected] newer_than:30d"
339 },
340 "tool_info": {
341 "type": "third_party",
342 "toolset_name": "Gmail",
343 "origin": "https://gmail.mcp.example.com",
344 "verified_origin": false
345 }
346}
347```
348 
349For a claude.ai connector, `verified_origin` can be `false` even when Anthropic's servers connect to the server themselves.
350 
351A name copied from `tool_name` can differ from the name the user sees: `mcp__Google_Drive__search_files` gives `Google_Drive`, not `Google Drive`. It can also end in a short suffix (`Gmail-1a2b3c4d`), for example when another of the user's connectors has the same name. The name isn't a stable identifier and doesn't prove which server the tool is on. When `tool_name` has no server name in it, `toolset_name` is left out.
329352 
330353### Client tools
331354 
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