x402-protocol-integration

Due-diligence audit of any x402/MPP merchant origin on behalf of a paying agent: probes /api/discovery + service catalog, does an unpaid GET on a paid service to capture its real 402 PAYMENT-REQUIRED challenge (x402 version, resource, price), checks the free meta contract, records security headers, and cross-checks registration on x402scan, PayAI discovery and ScoutScore. SSRF-guarded; only public http(s) origins.

The whole agentic-commerce trust dataset in one call: every audited x402 endpoint (trust score, scam flags, on-chain receiver, payTo/price history) AND every audited MCP server (safe/avoid, install-script risk, abandonment) plus incidents with on-chain proof. Cross-domain and longitudinal. NOTE: $1.00 exceeds the default 0.1 USDC cap in x402-fetch — pass maxValue. Free sample: /data/sample

Has this x402 endpoint been trustworthy over time? Track record of one endpoint from continuous independent monitoring: uptime %, the dated chronology of every payTo (receiver) change — the signal that catches hijacks — plus price-change history and trend. Compounding data that cannot be reconstructed after the fact: a snapshot tells you what an endpoint is, this tells you what it has been. ?endpoint=url

Bulk trust data for every x402 service in one call. For builders of trust, uptime and monitoring tools: each service's full profile — 0-100 trust score and pay/avoid verdict, scam flags, receiver stability, on-chain receiver profile, plus the compounding payTo and price change history. Skip scraping hundreds of endpoints. ?all=1 includes dead ones, ?limit=N. Free preview: /status.json, /data/sample.

Is this x402 endpoint safe to pay? Vet an unknown seller BEFORE paying: pay/avoid verdict, 0-100 trust score, live 402 probe, scam flags (payTo hijack, bait-and-switch pricing, honeypot, wrong asset) and an on-chain check of the receiver on Base. Reads x402 v1 (body) AND v2 (PAYMENT-REQUIRED header) — body-only checkers call live v2 services dead. ?endpoint=url; omit for a trust-ranked catalog.

Оракул доверия к x402-сервисам: жив ли эндпоинт, валиден ли, репутация/аптайм, стоит ли платить (?endpoint=url). Без параметра — каталог реально рабочих сервисов

Score up to 10 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed — for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored.

Returns a concentration-risk score for an x402 pay_to wallet: HHI, unique payer count, top-payer share, persistence across scans, and a risk tier (LOW / MEDIUM / HIGH / CRITICAL). An agent uses this to assess whether an endpoint is a single-agent dependency before building a workflow that depends on it.

LEGIT: trust scores and organic demand intelligence for the x402 agentic economy. Created by GONNA.

LEGIT: trust scores and organic demand intelligence for the x402 agentic economy. Created by GONNA.

LEGIT: trust scores and organic demand intelligence for the x402 agentic economy. Created by GONNA.

x402 Trust Index dossier for one Bazaar resource: trust score with full scoring evidence, every registry snapshot (SHA-256 audit trail), every change event (price/payTo/schema/listing) and every live-probe result. The complete due-diligence bundle before paying an endpoint. Free preview: https://5.75.142.199.sslip.io/x402/trust/{id}

Signed attestation for one x402 resource: its observed record, observed trust score, a Merkle inclusion proof into that day's root, the daily hash-chain root (previous_root linked) and an Ed25519 signature, plus independent verify steps. Tamper-evident evidence of what was observed at a point in time. Free preview: https://5.75.142.199.sslip.io/x402/trust/4

Live-probe any third-party x402 endpoint before you spend: we fetch its payment contract via a bounded GET/402 handshake, validate accepts, network, price and expiry against the x402 spec, measure response latency, and return a signed observation receipt with an observed_at timestamp you can cite. Limitation: no payment is made, one endpoint per call, and a passing probe proves the contract at observation time — not future uptime or provider honesty.

Reconcile one x402 purchase end to end: submit bounded, non-secret metadata for the payment requirement, payment response, delivery receipt and settlement reference, and receive a single deterministic verdict — proven, conflicting, or missing — field by field, suitable to attach to a refund request. Limitation: verdicts are computed from the artifacts you provide; we do not fetch chain state or contact the provider on your behalf.

Returns settlement-verified x402 endpoint intelligence. Shows which endpoints have genuine organic payer breadth and live pricing — sourced from on-chain USDC settlements, not just catalog listings. Filter by category, price range, and minimum unique payers. Useful before wiring a workflow to an external x402 endpoint: confirms it is active with multiple independent payers, not private infrastructure or a dead listing.

One call returns prediction market sentiment (Limitless Exchange) + live equity price for a specified ticker. Collapses the prediction-market → stock-price agent chain into a single x402 payment. $0.016 vs $0.024 bought individually. Inputs: ticker (required), query (optional keyword filter for prediction markets).

Market intelligence for any x402 endpoint or operator wallet. Returns settlement volume, unique payer count, price range, reputation tier, activity window, and endpoint description — drawn from 4.1M+ Base mainnet settlements in the Stall's proprietary on-chain dataset. Use before routing agent spend, vetting a counterparty operator, or benchmarking competitor pricing. No external API. Covers 80,000+ operators across 10+ days of live traffic.

The real x402 seller leaderboard with known wash-trading whales filtered out - the genuine top providers by activity that public rankings hide behind inflated wash-traded numbers, from proprietary tracking data. x402 leaderboard, x402 top sellers, x402 ranking, real x402 providers, agent economy leaders, x402 rankings

x402 Registry Watch: signed Ed25519 deltas of the x402/A2A endpoint registry (payTo/listings/endpoints). Pay-per-event feed pull. POST {"since":"<cursor|ISO>","slug":"<slug>","limit":<=200}.

Full change history for one x402 Bazaar resource: every snapshot (SHA-256 audit trail) and every change event (price_changed / payto_changed / schema_changed / delisted) since monitoring began. Use it to verify an endpoint's payment terms before paying. Find ids for free: https://5.75.142.199.sslip.io/x402/resources

Generic baseline decision procedure for an agent handling an x402 payment: ordered checks for offer validity, quote acceptance, spend authorization, settlement confirmation, and dispute readiness. Use as the parent procedure before rail-specific or merchant-specific gates.

Live x402 Bazaar market pulse: trending services, call volumes, new listings — from daily full-catalogue snapshots

Deep endpoint trust/QoS report for an x402 endpoint. Everything the trust score returns PLUS history detail: the full payment-terms drift log (including custody/payTo changes), the discovery/listing timeline across directories, the paid-delivery sample log, and a summarized counts-by-outcome breakdown with latency percentiles. Raw per-probe rows are never shipped. Use for auditing or investigating a specific endpoint's reliability over time.