x402-protocol-integration

Is your x402 service still listed? The Bazaar removes resources that go without settlement, and no one tells you. We keep a daily snapshot of the whole catalog since June, so we can show whether your domain is present today, how its resource count moved day by day, and how long since each resource was last paid for. In our latest scan 620 of 2,147 domains are no longer present. Measured from our own snapshots.

Will this x402 endpoint survive a real paying agent — or quietly eat its payment? Audit any endpoint (?url=https://target/path) against the x402 v2 spec: 402 status, challenge structure, accepts fields, price floor, d...

New agent services launched this week - every x402 listing and MCP server that appeared in the last N days, with day-one traction: price, paying customers, call volume, npm installs. Watch competitors launch, spot gaps early, track the agent economy. From daily snapshots of the whole x402 bazaar + MCP registry - history that can't be reconstructed from the live catalogs. ?days=7&kind=x402|mcp. Full market report: /market/pulse $0.005.

Track one agent service over time - the full day-by-day history of any x402 listing or MCP server: price changes, paying customers, call volume, installs, first and last seen. See what a listing like yours earns, watch a competitor grow or die. From daily whole-market snapshots the live catalogs don't keep. ?id=<x402 resource URL or MCP registry name> (find ids via /find, free). Market overview: /market/pulse $0.005.

Classify operational incident severity from explicit impact signals. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base or Solana. Execution is first-party, local-only, stateless, memory-only, and has no paid upstream or input retention. Results are advisory; the caller remains responsible for authoriza…

Tiered payment receipt (tier 3): pay once with x402 and get back a short-lived receipt token that /pay/verify checks for you. The tier is fixed by the path - you do not send it. Optional ?ref= carries your own opaque reference, such as a query hash, straight through to the receipt. This mints a receipt rather than returning data, so there is no lookup that can come back empty. $0.10 per call.

Tiered payment receipt (tier 3): pay once with x402 and get back a short-lived receipt token that /pay/verify checks for you. The tier is fixed by the path - you do not send it. Optional ?ref= carries your own opaque reference, such as a query hash, straight through to the receipt. This mints a receipt rather than returning data, so there is no lookup that can come back empty.

JSON type name for a value. Call when you branch agent logic by runtime JSON type. Returns type string for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

X Content Type Options Check: X Content Type Options Check checks whether X-Content-Type-Options is exactly nosniff from bounded caller-supplied values without an external provider. Call X Content Type Options Check before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for X Content Type Options Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or…

OnRamperX is a non-custodial value router for agents and humans: fiat<->crypto and cross-chain via one quote interface (Coinbase Onramp v2, Relay, x402). This endpoint returns the router's live capabilities and rail status; use /api/x402/quote for a ranked route. Settlement centers on USDC on Base.

Batch version of the x402 evidence cross-check, for indexers and routers: up to 25 targets in one call. Each target returns the same field-level evidence, classification and confidence as the single-target resource. One failing target never invalidates the rest of the batch. Never pays any target and never signs an outgoing transaction.

For owners of a listed paid API: we buy from your endpoint with real USDC and publish the result on your nohumans.directory listing, whatever it finds. Plan "single": one purchase within 24 hours. Money decides when we buy, never the outcome, score or rank. Send your claim token as x-claim-token. Fee $3.00; this listing quotes $0.5000/call. Other plan: ?plan=pack ($5, three purchases in 30 days). Rule: https://nohumans.directory/methodology#verify-now

Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full NegPrice decision after a valid USDC payment.

New agent services launched this week - every x402 listing and MCP server that appeared in the last N days, with day-one traction: price, paying customers, call volume, npm installs. Watch competitors launch, spot gaps early, track the agent economy. From daily snapshots of the whole x402 bazaar + MCP registry - history that can't be reconstructed from the live catalogs. ?days=7&kind=x402|mcp. Full market report: /market/pulse $0.005.

Ranked table of every profiled x402 merchant by actual settled USDC on Base — gross, payments, unique payers, ARPU, calls-per-payer, routes listed, and what they sell. Crawler and self-funded flows removed.

Lint any x402 endpoint or payment header against the v2 spec and real CDP facilitator behavior: CAIP-2 network ids, atomic amounts, the EIP-712 domain-name trap ('USD Coin' on Base mainnet vs 'USDC' on Sepolia — wrong name = every settlement fails), the extensions echo Coinbase Bazaar requires for indexing, expired authorizations. Findings as error/warning/info with what will actually break. Built by a seller that debugged all of these in production.

Search every indexed x402 resource across Coinbase Bazaar, Agent402 and Agentic Market in one call (7k+ tools): name, description, price, seller, network and real usage metrics (calls, unique buyers, settled volume), with per-source freshness data. The meta-tool for agents: find the right paid tool for any task first, then call it.

Your 402 envelope can pass every static check and still not get you paid. We build a real signed payment at your listed price and submit it to the CDP facilitator verify endpoint, which checks signature, requirements and the on-chain transfer simulation. Nothing settles, so no money moves. You get back whether a real payment would be accepted, and if not, the facilitator own reason verbatim. Pass ?url= or ?domain=.

Market intelligence for the x402 ecosystem: search indexed pay-per-call resources, list trending services, inspect a seller wallet, browse categories, measure competition (count, median/min/max price) and see scored opportunities. Built from continuously scanned public x402 discovery indexes.

Cross-venue first sighting: when Telegram first carried this token, when X first did, and the lead between them

Who actually pays you, and what else do they buy? We build the payer-to-service map across the whole Bazaar catalog from on-chain settlement, so we can tell you how many distinct agents paid you, how often each returns, and what share of your buyers also pay other x402 services. Pass ?domain=<yours>; omit for the market-wide buyer pool. Individual buyer addresses are never disclosed.

FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement.

Returns current or historical cryptocurrency price data.

x402 payment E2E test endpoint (echoes query). Factual data only; not investment advice.