Lithtrix — agent infrastructure skill

What this covers

Lithtrix is agent-native infrastructure: HTTPS APIs for web discovery (credibility-scored results), self-registration (one-time ltx_ API key), optional persistent JSON memory (KV, stats, context, semantic search when the host has vectors/embeddings), usage metering, Stripe billing for paid tiers, and an MCP server (npx -y lithtrix-mcp).

Use this skill when you should discover, register, call search/memory, explain quotas or referrals, or configure MCP — not for unrelated web search.

When to load this skill

• The user mentions Lithtrix, ltx_ keys, lithtrix.ai, lithtrix-mcp, or agent-native search / memory.
• You need a credible web search API with no dashboard (Bearer auth only after register).
• You need per-agent memory with optional semantic recall over stored JSON.
• You need to explain free vs starter vs pro limits or referral bonuses on the free tier.

Canonical URLs (read-first)

Base URL override (staging): set LITHTRIX_API_URL (MCP and custom clients); default is https://lithtrix.ai.

Quick start (three calls)

1. Discover

curl -sS "https://lithtrix.ai/v1/capabilities"

2. Register (one-time key — store immediately)

curl -sS -X POST "https://lithtrix.ai/v1/register" \
  -H "Content-Type: application/json" \
  -d '{"agent_name":"my-agent","owner_identifier":"owner@example.com"}'

Optional body field referral_agent: string = referring agent’s UUID (same value as their referral_code from GET /v1/me). Omit if unknown. Only UUID-shaped referrals count toward the referrer’s free-tier bonus.

3. Search (Bearer)

curl -sS "https://lithtrix.ai/v1/search?q=your+query" \
  -H "Authorization: Bearer ltx_your_key_here"

Optional auth on GET /v1/capabilities

If you send a valid Authorization: Bearer ltx_... header, the JSON includes referral_rewards.your_referral_code (your agent UUID — same as referral_code from GET /v1/me). Invalid or missing tokens still return HTTP 200; the key is simply omitted. Unauthenticated responses remain backward compatible.

curl -sS "https://lithtrix.ai/v1/capabilities" \
  -H "Authorization: Bearer ltx_your_key_here"

Referral programme (free tier)

• GET /v1/me (authenticated): always includes referral_code (your UUID to share). Includes referral_agent if you registered with a referrer.
• Free tier: lifetime web-discovery cap = base (default 300) + 100 × (count of other agents whose referral_agent equals your UUID). Self-referral excluded. Starter / Pro: monthly search caps; no referral bonus on search limits.
• Effective cap is reflected in GET /v1/search → usage.search_calls_limit / calls_remaining for free agents.

Memory (per-agent JSON)

After registration, use Bearer auth.

• PUT /v1/memory/{key} — store/update JSON (value required; optional ttl, importance, source, confidence)
• GET /v1/memory/{key} — read; DELETE /v1/memory/{key} — remove
• GET /v1/memory — list keys (paginated)
• GET /v1/memory/stats — ops + storage vs tier limits
• GET /v1/memory/context — top memories by importance/recency
• GET /v1/memory/search?q=... — semantic similarity over your memories (requires host vector + embedding configuration)

Key pattern: [a-zA-Z0-9-_.:]{1,128}. See OpenAPI and docs for response usage objects.

MCP (Claude Desktop, OpenClaw, etc.)

Install and run via stdio (no global install required):

npx -y lithtrix-mcp

Set environment variable LITHTRIX_API_KEY to a valid ltx_ key (obtain via lithtrix_register tool or POST /v1/register). Tools typically include search, register, and memory helpers — see tool definitions at https://lithtrix.ai/mcp/ paths listed in llms.txt or OpenAPI extensions.

Billing (paid tiers)

Upgrade path uses Stripe via API (see GET /v1/billing, GET /v1/billing/config, POST /v1/billing/setup in OpenAPI and Mintlify billing docs). Tiers: Free, Starter, Pro — limits differ for web discovery and memory; see /v1/capabilities and docs.

Security and hygiene

• Never commit or paste raw ltx_ keys into public repos, skills, or logs.
• Treat the API key like any secret: env vars, host credential stores, or secrets managers.
• Validate user-supplied URLs and payloads at your integration boundary; Lithtrix validates its own API inputs.

Troubleshooting

Support

• Docs: https://docs.lithtrix.ai
• Email: hello@lithtrix.ai
• GitHub: https://github.com/lithtrix