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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.

Source 1GitHub stars

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

  1. Add the server

    bash
    claude mcp add lithtrix-mcp -e 'LITHTRIX_API_KEY=<LITHTRIX_API_KEY>' -- npx -y lithtrix-mcp
  2. Fill in your credentials

    Replace <LITHTRIX_API_KEY> with your real value. Keep secrets out of any config file you commit.

  3. Verify it's connected

    bash
    claude mcp list
  4. Sharing 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).

  5. 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.

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 variable

    Your 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

Claude Code: NativeClaude Desktop: NativeCursor: NativeCodex CLI: NativeWindsurf: NativeCline: NativeVS Code: Native

Health score

B · 72

Maintenance, 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 README

lithtrix-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

bash
npx -y lithtrix-mcp

Or for global install:

bash
npm install -g lithtrix-mcp

2. Claude Desktop Configuration

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

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:

bash
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.

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Shows its health grade, and links readers to install steps for every client.

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