MCP tools

Each region has one MCP endpoint, /mcp/ on the inference host. It speaks MCP over Streamable HTTP and serves, together, the tools of the MCP servers your organization installed in the console under MCPs. Tool names are prefixed with the installation's alias, as <alias>-<tool>.

Connect a client

Any MCP client that supports Streamable HTTP and a custom header works. For example:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ccsio": {
      "type": "remote",
      "url": "https://api.us.ccsio.ai/mcp/",
      "headers": { "Authorization": "Bearer {env:CCSIO_API_KEY}" }
    }
  }
}

Use the protocol directly

curl

# 1. Open a session. The answer's Mcp-Session-Id header names it.
curl -i "https://api.us.ccsio.ai/mcp/" \
  -H "Authorization: Bearer $CCSIO_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc": "2.0", "id": 1, "method": "initialize",
       "params": {"protocolVersion": "2025-06-18", "capabilities": {},
                  "clientInfo": {"name": "my-app", "version": "1.0.0"}}}'

# 2. List the tools of every MCP server your organization installed.
curl "https://api.us.ccsio.ai/mcp/" \
  -H "Authorization: Bearer $CCSIO_API_KEY" \
  -H "Mcp-Session-Id: <the id from step 1>" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc": "2.0", "id": 2, "method": "tools/list"}'

# 3. End the session when you are done.
curl -X DELETE "https://api.us.ccsio.ai/mcp/" \
  -H "Authorization: Bearer $CCSIO_API_KEY" \
  -H "Mcp-Session-Id: <the id from step 1>"

initialize opens a session; send its Mcp-Session-Id on every later request. The protocol versions are 2025-06-18 and 2025-03-26.
The server-to-client stream (GET /mcp/) is not offered: it answers 405.
Calling tools needs the permission mcp.invoke, which every built-in role holds. An installation can be limited to some teams.

Connect a client

Use the protocol directly

Get your first API key