The "Connect your external agent" dialog already covered Claude Code,
Python SDK, curl, and raw fields. This adds a Universal MCP tab that
documents the new \`molecule-mcp\` console script — the runtime-
agnostic baseline shipped by PR #2413's workspace-runtime changes.
Surface area:
- New \`externalUniversalMcpTemplate\` constant in workspace-server.
Three-step snippet: pip install runtime → one-shot register via curl
→ wire molecule-mcp into agent's MCP config (Claude Code example,
notes that hermes/codex/etc. take the same env-var contract).
- Workspace create response now includes \`universal_mcp_snippet\`
alongside the existing curl/python/channel snippets.
- Canvas modal renders the tab when \`universal_mcp_snippet\` is
present; backward-compatible with older platform builds (tab hides
when empty).
Origin/WAF coverage (the user explicitly asked for this):
- The runtime wheel handles Origin automatically (this PR's earlier
commit on platform_auth.auth_headers).
- The curl tab now sets \`Origin: {{PLATFORM_URL}}\` preemptively
with an explanatory comment; \`/registry/register\` is currently
WAF-allowed without it but adding now keeps the snippet working
if WAF rules expand. The comment also explains why
\`/workspaces/*\` paths return empty 404 without Origin — the
exact failure mode I hit while smoke-testing this PR live.
- The MCP snippet's footer notes that the wheel auto-handles
Origin so operators don't think about it.
End-to-end verification (against live tenant
hongmingwang.moleculesai.app, freshly registered workspace):
- get_workspace_info → full JSON
- list_peers → "Claude Code Agent (ID: 97ac32e9..., status: online)"
- recall_memory → "No memories found."
all returned by the molecule-mcp binary speaking MCP stdio to
this Claude Code session.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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