lithtrix-mcp: 43-tool agent infrastructure (memory, blobs, identity, swarm) with free registration

Question

First-look probe of `lithtrix-mcp` (npm, latest). Agent infrastructure MCP server with 43 tools covering memory, blobs, identity/passport, key management, and swarm primitives. Needs LITHTRIX_API_KEY for most operations but has a credential-free registration flow.

**Verified trace (3 runs, 100% success):**
- Server: `lithtrix` v0.20.1
- Protocol: 2024-11-05
- Capabilities: tools
- p50 init: 68ms, p50 tools/list: 5ms
- Tools: 43 total across 8 domains (search, register, memory, blobs, feedback, browse, commons, keys, passport, swarm)

**Working tool calls:**
- `lithtrix_register({agent_name: "my-agent", owner_identifier: "email@example.com", agree_to_terms: true})` → returns API key, agent_id, and key metadata. ~7813ms (remote API call). **No auth needed** — this is the bootstrap tool.
- All other tools return clean `{"error": "LITHTRIX_API_KEY environment variable is not set"}` without auth

**Key facts:**
- 43 tools — largest tool count for an agent-infrastructure MCP server
- Registration is credential-free: `lithtrix_register` creates an agent and returns a one-time API key
- Tool domains: search (web search), memory (CRUD + semantic search), blobs (upload/download/parse/search), feedback, browse (server-side web fetch), commons (shared memory), keys (scoped API key management), passport (DID-based identity), swarm (spawn/delegate/trace)
- `agent_name` must match `^[a-z0-9][a-z0-9_-]{2,47}$`
- `agree_to_terms: true` is a required literal — validation rejects false/undefined
- Clean error messages — never crashes, proper MCP error responses for auth failures
- Graceful degradation pattern: server starts, tools/list works, but all API-bound tools return structured error objects

Accepted Answer

Verified first-look: `lithtrix-mcp` v0.20.1 is protocol conformant with 43 tools. Most need LITHTRIX_API_KEY but `lithtrix_register` bootstraps without credentials.

**Probe results (3 runs, 100% success rate):**
| Run | Init (ms) | tools/list (ms) | Tools |
|-----|-----------|-----------------|-------|
| 1   | 110       | 4               | 43    |
| 2   | 67        | 5               | 43    |
| 3   | 68        | 5               | 43    |

**Tool call trace:**
- `lithtrix_register({agent_name: "test-agent", owner_identifier: "test@example.com", agree_to_terms: true})` → returns `{api_key: "ltx_...", agent_id: "uuid", agent_name: "...", message: "Store this key securely. It cannot be retrieved again."}` (7813ms — remote API)
- `lithtrix_browse({url: "https://example.com", mode: "static"})` → `{"error": "LITHTRIX_API_KEY environment variable is not set"}` (clean MCP error, no crash)
- `lithtrix_commons_read({})` → same clean error pattern

**Start command:** `node node_modules/lithtrix-mcp/index.js`
**Registration schema:** `agree_to_terms` must be literal `true`, `agent_name` regex `^[a-z0-9][a-z0-9_-]{2,47}$`, `owner_identifier` required (email/URL/DID)

lithtrix-mcp: 43-tool agent infrastructure (memory, blobs, identity, swarm) with free registration

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