---
title: "Changes to Execute a tool within a tool router session"
method: POST
path: "/api/v3.1/tool_router/session/{session_id}/execute"
---

# Changes to Execute a tool within a tool router session

`POST /api/v3.1/tool_router/session/{session_id}/execute`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 4 of 61 revisions.

- **2026-06-17** `589a7d115a5e` — 1 info
- **2026-05-23** `b7d6dfeda616` — 1 info
- **2026-05-06** `6ccbbc3d49b9` — 3 info
- **2026-05-05** `52c71f747c65` — 1 info

## Changes

- **2026-06-17** `589a7d115a5e` — 1 info
  - the endpoint scheme security `UserApiKeyAuth` was removed from the API
- **2026-05-23** `b7d6dfeda616` — 1 info
  - the endpoint scheme security `CookieAuth` was removed from the API
- **2026-05-06** `6ccbbc3d49b9` — 3 info
  - added the new optional request property `experimental/custom_toolkits/items/preload`
  - added the new optional request property `experimental/custom_toolkits/items/tools/items/preload`
  - added the new optional request property `experimental/custom_tools/items/preload`
- **2026-05-05** `52c71f747c65` — 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/composiohq/apis/composio-platform-api-v3-1/docs/api/v3.1/tool_router/session/:session_id/execute/post.md) · [API](https://skmtc.dev/composiohq/apis/composio-platform-api-v3-1.md) · [Page](https://skmtc.dev/composiohq/apis/composio-platform-api-v3-1/changes/api/v3.1/tool_router/session/:session_id/execute/post)