---
title: "Set Tool Permission Handler"
method: PUT
path: "/api/mcp/servers/{name}/tools/{tool_name}/permission"
tags: ["runtime_mutations", "mcp"]
---

# Set Tool Permission Handler

`PUT /api/mcp/servers/{name}/tools/{tool_name}/permission`

Set permission level for a tool.

## Path parameters

- `name` string, required
- `tool_name` string, required

## Request body

- SetPermissionRequest — Request to set tool permission.
  - `permission` string, required

## Response `200`

Successful Response

- MCPToolResponse — Response containing tool information.
  - `name` string, required
  - `qualified_name` string, required
  - `description` string, required
  - `input_schema` object, required
  - `permission` string, required

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-18** `abf76937a751` — 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
- **2026-09-13** `9130e4640e24` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/changes/api/mcp/servers/:name/tools/:tool_name/permission/put.md)

---

[API](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api.md) · [All operations](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/llms.txt) · [OpenAPI document](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/revisions/d61e2ec5a271?raw)