# POST /api/v3/tools/execute/proxy stops working

Calls to POST /api/v3/tools/execute/proxy on Composio stopped working on June 4, 2026.

- API: Composio (backend.composio.dev)
- Kind: Endpoint removal
- Announced: June 4, 2026
- Takes effect: June 4, 2026
- Calls after that day: fail
- Calls it hits: `POST /api/v3/tools/execute/proxy`
- Source: [Announcement](https://docs.composio.dev/reference/changelog)
- Page: https://www.okapi.bot/providers/composio/breaking-changes/post-api-v3-tools-execute-proxy-stops-working/

## What to use instead

Call POST /api/v3.1/tools/execute/proxy or update the SDK.