Lithtrix — Identity, Memory & Trust for AI Agents MCP server
ai.lithtrix · Updated
Identity, memory, trust, and swarm primitives for AI agents. MIRC base always free.
At a glance
Lithtrix — Identity, Memory & Trust for AI Agents is an MCP server in the AI & Memory category. It runs locally over stdio via `npx -y lithtrix-mcp`, and needs LITHTRIX_API_KEY. It exposes 22 tools, including lithtrix_search, lithtrix_browse and lithtrix_commons_read. It scores B (72/100) on the MCP Skills Hub health score as of Oct 28, 2026.
One-click install
Opens your editor and pre-fills the config. Your editor will ask before adding it.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in your AI client
Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in Claude CodeAnthropic's agentic CLI
Add the server
bashclaude mcp add lithtrix-mcp -e 'LITHTRIX_API_KEY=<LITHTRIX_API_KEY>' -- npx -y lithtrix-mcpFill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
Verify it's connected
bashclaude mcp listSharing it with your team?
Add `--scope project` to write it to .mcp.json in the repository root, which you can commit (with the secrets left as environment variables).
Use it in a session
Ask Claude to use the tools this server exposes (e.g. lithtrix_search, lithtrix_browse, lithtrix_commons_read). It discovers them automatically.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in Claude DesktopDesktop app (MCP config)
Open your MCP config
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json
Add this server
json{ "mcpServers": { "lithtrix-mcp": { "command": "npx", "args": [ "-y", "lithtrix-mcp" ], "env": { "LITHTRIX_API_KEY": "<LITHTRIX_API_KEY>" } } } }Fill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
Restart Claude Desktop
The tools appear under the 🔌 menu once the app reloads.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in CursorAI-first code editor
Create / edit .cursor/mcp.json in your project
json{ "mcpServers": { "lithtrix-mcp": { "command": "npx", "args": [ "-y", "lithtrix-mcp" ], "env": { "LITHTRIX_API_KEY": "<LITHTRIX_API_KEY>" } } } }Fill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
Enable it
Cursor Settings → MCP → toggle the server on. Tools become available to the Composer/Agent.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in Codex CLIOpenAI coding agent
Add to ~/.codex/config.toml
toml[mcp_servers.lithtrix-mcp] command = "npx" args = ["-y", "lithtrix-mcp"] env = { LITHTRIX_API_KEY = "<LITHTRIX_API_KEY>" }Fill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
Run Codex
Codex loads MCP servers from config.toml on startup and exposes their tools to the agent.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in WindsurfCodeium's agentic IDE
Edit ~/.codeium/windsurf/mcp_config.json
json{ "mcpServers": { "lithtrix-mcp": { "command": "npx", "args": [ "-y", "lithtrix-mcp" ], "env": { "LITHTRIX_API_KEY": "<LITHTRIX_API_KEY>" } } } }Fill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
Reload
Windsurf → Cascade → refresh MCP servers. Cascade can now call the tools.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in ClineVS Code autonomous agent
Open Cline → MCP Servers → Configure
Adds to cline_mcp_settings.json.
Add the server
json{ "mcpServers": { "lithtrix-mcp": { "command": "npx", "args": [ "-y", "lithtrix-mcp" ], "env": { "LITHTRIX_API_KEY": "<LITHTRIX_API_KEY>" } } } }Fill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
How to install Lithtrix — Identity, Memory & Trust for AI Agents in VS CodeCopilot / MCP support
Create .vscode/mcp.json
json{ "servers": { "lithtrix-mcp": { "type": "stdio", "command": "npx", "args": [ "-y", "lithtrix-mcp" ], "env": { "LITHTRIX_API_KEY": "<LITHTRIX_API_KEY>" } } } }Fill in your credentials
Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.
Start it
VS Code shows a ▶ Start action above the server entry. Agent mode (Copilot Chat) can then use the tools.
What does Lithtrix — Identity, Memory & Trust for AI Agents need from you?
API key — Your Lithtrix API key (ltx_...). Get one free at https://lithtrix.ai/v1/register
LITHTRIX_API_KEYrequiredsecretEnvironment variableYour Lithtrix API key (ltx_...). Get one free at https://lithtrix.ai/v1/register
Pass secrets through your shell environment rather than committing them into a config file.
What tools does Lithtrix — Identity, Memory & Trust for AI Agents expose? (22)
Taken from the project's README — the server itself was not queried, so check its docs for the exact schemas.
- lithtrix_searchweb search with credibility scoring. Requires `LITHTRIX_API_KEY`. Responses include `_lithtrix.search_id` for correlating `lithtrix_feedback`.
- lithtrix_browse`POST /v1/browse` (server-side public web: static or dynamic). Requires `LITHTRIX_API_KEY`. *Pay to be fully autonomous* — see `GET /mcp/v1/lithtrix-browse.json`.
- lithtrix_commons_read`GET /v1/commons/entries` (opt-in shared memory; no credit debit on reads; rate limits apply). Requires `LITHTRIX_API_KEY`. Schema: `GET /mcp/v1/lithtrix-commons-read.json`.
- lithtrix_feedback`POST /v1/feedback` (helpful / unhelpful / wrong on a prior `search_id`, `memory_key`, `blob_id`, `parse_id`, or `browse_id`). Requires `LITHTRIX_API_KEY`. Optional `note` (≤500 chars); do not send secrets or PII.
- lithtrix_registerregister a new agent and get an API key. No auth required. `agree_to_terms` must be `true` (Gentle-Agent Agreement). $5 trial credits on signup (no card). Optional `referral_agent` (referrer UUID).
- lithtrix_memory_set`PUT /v1/memory/{key}`. Requires `LITHTRIX_API_KEY`.
- lithtrix_memory_get`GET /v1/memory/{key}`. Requires `LITHTRIX_API_KEY`.
- lithtrix_memory_search`GET /v1/memory/search` (semantic). Requires `LITHTRIX_API_KEY` and server-side vector + embedding config.
- lithtrix_memory_context`GET /v1/memory/context` (importance + recency). Requires `LITHTRIX_API_KEY`.
- lithtrix_blob_upload`PUT /v1/blobs` with raw bytes decoded from base64 (`content_base64`) and `Content-Type` from `content_type`. Optional `filename` query. Use direct HTTP for very large files. Requires `LITHTRIX_API_KEY`.
- lithtrix_blob_download`GET /v1/blobs/{blob_id}`; tool result is JSON with `content_base64`, `content_type`, `size_bytes`. Requires `LITHTRIX_API_KEY`.
- lithtrix_blob_list`GET /v1/blobs` (optional `page`, `per_page`). Requires `LITHTRIX_API_KEY`.
- lithtrix_blob_meta`GET /v1/blobs/{blob_id}/meta`. Requires `LITHTRIX_API_KEY`.
- lithtrix_blob_delete`DELETE /v1/blobs/{blob_id}` (soft-delete). Requires `LITHTRIX_API_KEY`.
- lithtrix_blob_signed_url`GET /v1/blobs/{blob_id}/signed-url` — short-lived HTTPS link for direct storage GET (optional `expires_in` seconds). Requires `LITHTRIX_API_KEY`. Treat URLs as read tokens.
- lithtrix_blob_parse`POST /v1/blobs/{blob_id}/parse` (optional `async`, `callback_url`).
- lithtrix_blob_parse_status`GET /v1/blobs/{blob_id}/parse/{parse_id}`.
- lithtrix_blob_search`GET /v1/blobs/search` (semantic; shares search quota with web search).
- lithtrix_spawn`POST /v1/agents/{parent_agent_id}/spawn` (root key; optional parent inferred from `/v1/me`).
- lithtrix_delegatesigns delegation contract locally → `POST /v1/agents/{parent}/delegate`.
- lithtrix_trace_append`POST /v1/tasks/{task_id}/trace/events`.
- lithtrix_trace_get`GET /v1/tasks/{task_id}/trace`.
What the code can do
Read from the published package source — never executed. Parsed 25 of 25 source files.
This server can make network requests and read your environment variables.
How it was published
- No provenance attestation — there is nothing linking this published artifact to a specific source commit.
- 1 npm maintainer — a single point of compromise · last published by lithtrix.
Maintainer of this package and think something here is wrong? Tell us and we'll correct it.
Before you install
Signals gathered from the source repo and package registry — not a safety verdict.
What it can reach
- Runs code on your machine — Executes as a local process with your user's permissions, including filesystem access.
- Downloads at launch — The package is fetched from its registry each run unless you pin a version.
- Last commit 4 months ago — Actively maintained.
- 1 GitHub stars — Very little community usage so far.
- No license declared — Without a license the code is not legally reusable in a commercial project.
Client compatibility
Health score
B · 72Maintenance, adoption, transparency and packaging — not a safety audit. How this is calculated
- Maintenance30%86%
Last commit 131 days ago.
- Adoption20%9%
1 stars.
- Transparency20%75%
3/4: ✓ public source repo, ✗ declared license, ✓ documentation, ✓ discoverable tool list.
- Provenance15%100%
Package and registry entry point at the same repository.
- Packaging15%100%
Publishes a pinned version (0.20.2).
Documentation
Full READMElithtrix-mcp
MCP server for Lithtrix — the identity, memory, and trust harness for AI agents. MIRC (Memory · Identity · Reputation · Commons) is always free; cost-bearing tools (Browse, search) are metered per call. Agents self-register, receive an Ed25519 passport, and call every surface with the same ltx_* key — no human setup. Ships `lithtrix.claude.md` for Claude / Cursor project context (same repo path as this package).
Aligned with API discovery `version` `4.4.0` (GET https://api.lithtrix.ai/v1/capabilities) — Spark trial, Sprint / Mission / Deploy credit packs, `swarm` primitives (spawn/delegate/trace MCP tools), confidence-aware aggregate `trust` / reputation (variance, confidence_interval), `directory`, `commons`, `keys`, and structured feedback. Package version `0.20.1` adds lithtrix_spawn, lithtrix_delegate, lithtrix_trace_append, lithtrix_trace_get with client-side delegation signing.
MCP tool JSON: canonical **GET https://lithtrix.ai/mcp/v1/lithtrix-*.json. Legacy GET https://lithtrix.ai/mcp/lithtrix-*.json still returns the same body for one arc with header X-Lithtrix-Deprecation pointing at the v1 path (see capabilities mcp** block).
1. Installation
npx -y lithtrix-mcpOr for global install:
npm install -g lithtrix-mcp2. Claude Desktop Configuration
Add to ~/Library/Application Support/Claude/claude_desktop_config.json:
{
"mcpServers": {
"lithtrix": {
"command": "npx",
"args": ["-y", "lithtrix-mcp"],
"env": {
"LITHTRIX_API_KEY": "ltx_your_key_here"
}
}
}
}3. Getting an API Key
Use the lithtrix_register tool first — no API key needed. Or call the API directly:
curl -X POST https://lithtrix.ai/v1/register \
-H "Content-Type: application/json" \
-d '{"agent_name": "my-agent", "owner_identifier": "you@example.com", "agree_to_terms": true}'Excerpt — the full document is on GitHub.
Alternatives to Lithtrix — Identity, Memory & Trust for AI Agents
- Cairn.ink MemoryA · 80Cross-session memory for AI agents with a Source Receipt for every memory, over MCP.
- hmem — Humanlike Memory for AI AgentsA · 85Persistent 5-level hierarchical memory for AI agents. SQLite-backed, lazy-loaded.
- Cathedral — Persistent Memory for AI AgentsB · 73Persistent memory and drift detection for AI agents across session restarts.
- nlqdb — analytical memory for AI agentsB · 70Analytical memory for AI agents: a real Postgres queried in plain English over MCP. One command.
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