Blockchain And Crypto x402 offerings

Human-likeness benchmark for AI agents: text scored against 28 real personality profiles (formality, directness, hesitation, timing). Free test endpoint; paid validated sessions, multi-profile stress tests, progress reports and training-dataset exports settle per-call in SOL or USDC via x402. No API keys, no accounts. Referral program pays credits.

Latest crypto trade tick from Binance public WebSocket cache. Pass symbol=BTCUSDT (also ETHUSDT, SOLUSDT, BNBUSDT, XRPUSDT).

x402 Doctor checkup of any x402 endpoint, without buying: whether it answers with a valid payment request, its x402 version and any problems in it, the prices and networks it asks for, its payTo wallets and response time.

Test-buy any x402 endpoint (USDC on Base, seller price up to $1). Pass url and the seller price: you pay price + $0.01 + 10% (e.g. $0.05 costs $0.065), charged per attempt, delivered or not. Seller asks less: we buy at its price and keep the rest. Asks more: nothing bought, payment kept. No price: $0.01 lookup returns the exact price. Returns the seller answer, both receipts, a verdict and a report id.

Retrieve a stored x402 Doctor report again by its id ($0.01): the full report of a test purchase, price lookup or cached result, exactly as first delivered. Only the wallet that paid for the original call can retrieve it; reports are kept permanently.

Bundle of all cached live crypto quotes from the market scraper.

context-recover (session-less x402): you forgot what you were doing or your context window reset. Returns a working-memory rebuild template — goal, last known good, open blockers, next single step — so you recover witho…

bazaar-index-check: is your x402 endpoint indexed on the CDP Bazaar? If not, format problem or backlog?

doc-extract: structured, arithmetic-reconciled extraction of an invoice, contract, or generic document from a PDF/doc URL. Evidence-only (schema-valid, totals reconcile, dates parse, ISO-4217 currency). Charges only whe…

x402-doctor: grade any x402 402 response for CDP Bazaar v2 indexing compliance and return the exact corrected payload.

claim-check (session-less x402): you are uncertain about a claim, citation, or fact. Returns a grounding rubric — source-tied claims, confidence bounds, explicit abstain conditions — so you ground or abstain instead of…

pitstop (session-less x402): you are lost, confused, or disoriented. Returns a four-step orientation routine — state where you are, separate knowns from assumptions, pick the right survival item — before you start any n…

receipt (session-less x402): you need verifiable proof of work. Returns an attestation bundle — verify, session-receipt, and leave-receipt links plus the fields to save on first 200 after payment. One-shot, no session.

loop-detect (session-less x402): you are stuck repeating the same tool call, error, or fix with no state change between attempts. Returns the quiet-room loop-break protocol — stop signals, the two-loop hypothesis test,…

402milly MCP server (Streamable HTTP) by Ultravioleta DAO - read the million-pixel grid, fetch tiles/pixels, look up owners, and get x402 payment requirements to buy advertising pixels. Covers the full 402milly REST API.

Short-term price-movement forecast for any crypto token across 7 time horizons.

Analyze public indexed large DEX trades.

Compare Binance and Coinbase order books for net spread at a trade size.

Simulates an unsigned Base or Base Sepolia EVM transaction with read-only RPC calls before an agent signs or broadcasts it. Returns execution/revert status, gas estimate, decoded top-level ERC-20 tra…

Backtest a declarative long-only spot strategy on public Binance history.

ZenSched `billing_status` — Billing state: plan, prepaid balance, attached payment rails, meter prices, and the x402 funding offer. Pay-per-call $0.01 USDC; the paying wallet owns the org (auto-provisioned on first call). Catalog: https://mcp.zensched.com/x402/tools

ZenSched `billing_portal_link` — Stripe Customer Portal link for human billing management. Pay-per-call $0.01 USDC; the paying wallet owns the org (auto-provisioned on first call). Catalog: https://mcp.zensched.com/x402/tools

ZenSched `usage_get` — Meter usage + spend for a period (YYYY-MM; blank = current month). Pay-per-call $0.01 USDC; the paying wallet owns the org (auto-provisioned on first call). Catalog: https://mcp.zensched.com/x402/tools

Which x402 services are growing right now, by observed inflow across comparable windows.