# Myncellium Paid MCP / x402

> Pay-per-call APIs over x402 (USDC on Solana). No API key. Discovery: /openapi.json and /.well-known/x402.

## Paid endpoints (x402, USDC on Solana)
- GET https://paid.myncellium.com/x402/market/price?q=&type=&max_price_usd=  — x402 market prices across public directories (Bazaar + x402scan). ~$0.005.
- GET https://paid.myncellium.com/x402/model/price?provider=&model=&tokens_in=&tokens_out=  — LLM prices with official sources. ~$0.003.
- POST https://paid.myncellium.com/mcp  — MCP tools (JSON-RPC tools/call): paid_answer, paid_review_snippet, paid_extract, paid_translate, paid_summarize, paid_extract, paid_cve_lookup, paid_dns_intel, paid_repo_health, paid_hash, paid_convert, paid_crypto_price, paid_gtin_lookup, paid_config_review, paid_x402_market, paid_model_price, paid_llm_route, paid_x402_audit.
- POST https://paid.myncellium.com/a2a  — A2A (Agent2Agent) JSON-RPC (message/send), x402-gated. Agent card: /.well-known/agent-card.json (~$0.005).

## Free trial
- Append ?trial=1 to /x402/market/price or /x402/audit for 1 free call per IP per day (no payment).

## Free
- GET https://paid.myncellium.com/ (human landing; JSON discovery for non-browser clients)
- GET https://paid.myncellium.com/docs (human docs: quickstart, x402 flow, endpoints, prices)
- GET https://paid.myncellium.com/openapi.json
- GET https://paid.myncellium.com/.well-known/x402
- GET https://paid.myncellium.com/leaderboard
- GET https://paid.myncellium.com/market/summary.json (free market summary)

## Market snapshot
- x402 marketplace listings indexed: 6514 (paid 6503); x402scan sample 4629.
- Paid price distribution (USD): p25 0.001 · median 0.0075 · p75 0.02.