# MCP list tools

> Tag 5: the client sends the params of the MCP method; the server opens the proxy’s /tool/list-tools and relays exactly one channel response, the result or the MCP error, and the channel response finish.

Canonical: https://provider.diverge.network/2.3.0/endpoints/containers-tools-run/client/mcp-list-tools/
Specification revision: 2.3.0

The client opens this channel for the tools the MCP server of the container offers. The server opens
[`/tool/list-tools`](/2.3.0/proxy/tool/list-tools/) on the proxy with the params
and relays its one answer.

- **The request.** The tag byte `5` followed by the params as
  JSON. [Request](/2.3.0/endpoints/containers-tools-run/client/mcp-list-tools/request/) states its form.
- **The response.** Exactly one channel response, the result or an
  MCP error, and the channel response finish.
  [Response](/2.3.0/endpoints/containers-tools-run/client/mcp-list-tools/response/) states the sequence.
- **Every exchange is answered.** An MCP error the container's server
  returned, and the error the proxy sends for params that do not
  parse or a server it cannot reach, are relayed as the one channel
  response.