x402-protocol-integration

OpenAI-compatible chat on 100+ Venice models via x402 USDC (Base). Model from GET /api/v1/models?type=text; personas via /characters. Thinking models: empty content + reasoning_content is success; use venice_parameters.disable_thinking for plain text.

Octodamus Derivatives Guide -- pay-per-call x402 endpoint on Base. Preview: https://api.octodamus.com/v2/guide/derivatives/preview

Octodamus NYSE Tech Gas Optimizer -- pay-per-call x402 endpoint on Base. Preview: https://api.octodamus.com/v2/nyse_tech/gas_settlement_optimizer/preview

Octodamus NYSE Tech DTC Pipeline Subscribe -- pay-per-call x402 endpoint on Base. Preview: https://api.octodamus.com/v2/nyse_tech/dtc_pipeline/subscribe/preview

Monexus Terminal API — Agentic-payments ecosystem brief: x402/MPP/USDC events with episode citations. Params: limit (<=50).

Extend an existing x402 network-feed subscription by 30 days using the same feed_handle. Renewing before the expiry date adds to the remaining time instead of restarting it, so polling never has a gap. Your cursor is kept.

Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.

Score up to 200 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. Duplicates are ignored.

Deep audit of an x402/ACP seller before trusting it: give a seller wallet or domain and get a full report — on-chain settlement reputation (settlements, unique counterparties, wash-trade/sybil, OFAC), the seller's advertised endpoints (from its /.well-known/x402.json), on-chain liveness, web reputation and red flags — fused into a TRUSTED/CAUTION/AVOID verdict with a signed, offline-verifiable receipt. Deeper than a pass/fail badge: the full seller due-diligence dossier for agentic payments.

Time-series trend report from hosted D1 x402 observations: category demand deltas, new resources, seller concentration shifts, metadata-quality drift, and next build/proof recommendation. Price 0.08 USDC on Base via x402. Free preview: https://x402-market-intel-mcp.mtree.workers.dev/preview/category_trends?source=x402_manifest. Demo: https://x402-market-intel-mcp.mtree.workers.dev/demo/category_trends. Contact: https://x402-market-intel-mcp.mtree.workers.dev/contact.

Score up to 500 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. Duplicates are ignored.

Tiered payment receipt (tier 2): 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.

Full reliability report on one x402 service from our own availability monitoring (~2 probes/day per host): daily probe series over 30 days (probes, ok, avg/max latency), uptime 7d/30d, all observed change events (up/down transitions, payTo drift, price drift, manifest appearing/disappearing) and the payment details as last observed in the service's own 402 responses. Returns 400 host_not_monitored (no charge) when we have no history for the host. Facts only — no scores.

Quality-score an x402 Bazaar listing (0-100): live SSRF-guarded probe of the resource for a valid 402 challenge with description/output-schema/category/price-floor checks, plus snapshot-history analysis from daily full-catalogue Bazaar snapshots (price churn, delisting)

x402 Bazaar day-over-day catalogue diff between the two latest daily full-catalogue snapshots: counts and samples of added resources, removed resources, and price changes (from/to atomic amounts)

Audit any x402 endpoint before you pay it: reads the live HTTP 402 challenge, decodes the payment terms, and compares the price advertised in its openapi.json against the price actually charged. Returns a compliance verdict, a safe-to-pay signal and a per-check fix list. Catches silent price drift, unpayable challenges, and the misconfigurations that make discovery indexes drop a resource.

Live health probe of the two x402 facilitators this service settles through: Dexter /supported coverage (kinds, schemes, networks) and Coinbase CDP reachability with HTTP status and latency

Trust check before paying an unfamiliar x402 service, by pay_to address and/or service URL. Combines our own availability monitoring of the service's x402 endpoint (30-day uptime, last check, observed payTo/price and drift between our measurements), on-chain USDC payment history to the address on Base (2-day window), and EU regulatory status of the domain (MiCA-authorised or ESMA warning list). Factual only — no scores; not being monitored is not negative, presence is no endorsement.

x402 Bazaar price distribution across the latest daily full-catalogue snapshot: min/p25/p50/p75/p90/max in atomic units and USD, USD price bands with shares, and per-network listing counts with median price. Optional ?network= filter.

Detect categories where buyer demand, revenue, or payer growth is high relative to supply and metadata completeness, highlighting underserved wedges. Price 0.10 USDC on Base via x402. Free preview: https://x402-market-intel-mcp.mtree.workers.dev/preview/emerging_categories?source=x402_manifest. Demo: https://x402-market-intel-mcp.mtree.workers.dev/demo/emerging_categories. Contact: https://x402-market-intel-mcp.mtree.workers.dev/contact.

Weekly digest of rail economics for x402/MPP payments: per-rail transfer fees, facilitator bps, live Base gas, last-week settlement volume by rail/facilitator/product, sampled transfer gas, and an LLM-composed signal. Cache is 7 days so each paid call is a fresh weekly read.

A structured gap map of five open niches in Solana x402 agent payments, based on the July roundup and live market signals. Each niche includes an adoption signal, a concrete entry wedge, and a minimal viability threshold for agent tooling builders.

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