Vercel MCP returns "Tool deploy_to_vercel not found" although tool is advertised

Victorsoares 9199 · 2026-09-21 16:37:30.708

Vercel MCP advertises deploy_to_vercel, but server returns Tool not found I'm using the Vercel MCP through OpenAI Codex. The Vercel integration advertises deploy_to_vercel as an available tool, but every actual invocation fails with: McpServerError: Tool deploy_to_vercel not found error_code: INVALID_ARGUMENT JSON-RPC code: -32602 Other Vercel MCP operations work correctly. The integration is authenticated and can successfully access/list the existing Vercel project and deployments. I also refreshed/reconnected the Vercel integration and started a completely new Codex session. The same behavior persists. The issue therefore appears to be a mismatch between the tool registry exposed to Codex and the tools actually registered by the Vercel MCP backend: Tool catalog: deploy_to_vercel available Vercel MCP backend: deploy_to_vercel not found No deployment is created. OpenAI Codex feedback ID: 01a08772-49c8-7523-9f1d-dc0fd528b684 Could you confirm whether deploy_to_vercel is currently enabled/supported by the Vercel MCP server used by Codex?

Confirming the same issue in ChatGPT Web with the connected Vercel plugin (0.21.4), in addition to Codex.

On Sep 28, 2026, I reconnected my Vercel account via OAuth and started a fresh ChatGPT chat. I requested a minimal production deployment and provided an inline index.html. The exposed tool signature was deploy_to_vercel(): any (no target/name/files inputs), while the current Vercel MCP docs describe those inputs: https://vercel.com/docs/agent-resources/vercel-mcp/tools

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ChatGPT called Vercel.deploy_to_vercel({}) and received: {"type":"json_rpc_error","code":-32602,"message":"Tool deploy_to_vercel not found","is_error":true}

A read-only Vercel operation (list_teams) returned normally. Reconnecting and starting a new chat did not change the deployment error. No deployment ID or URL was created. Public reproduction chat: https://chatgpt.com/share/6ab9ce4f-8248-83ea-a8fe-1632a37dd6ca

Could the Vercel MCP / ChatGPT connector owners check the tool registration and exposed input schema, or confirm whether this deployment action is currently disabled?