x402-protocol-integration

Paid agent-facing brief on XRPL issued-currency pre-payment asset-model verification for agents paying via x402 on the XRP Ledger-0. Blunt decision procedure, not marketing.

Agent-facing brief specifying a deterministic procedure for selecting a cross-rail settlement layer (Base, Solana, or XRP Ledger) for x402 agent payments. Focuses on decision logic, not marketing.

Paid agent-facing brief on Consumer MPP token utility verification: verify whether a payment token's everyday-spend claims are operational before an agent or user relies on them. Given repeated marketing that a token "brings crypto to everyday things, " build a procedure that checks for real merchant acceptance endpoints (does an x402/MPP merchant actually list this token?), settlement rail maturity, liquidity depth for the -0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Agent comms and inbox merchant-contract audit: probe-grounded composite that verifies a paid agent inbox or comms endpoint actually speaks x402 correctly before an agent commits funds · Build a decision procedure or schema for: Agent comms and inbox merchant-contract audit: probe-grounded composite that verifies a paid agent inbox or comms endpoint actually speaks x402 correctly before an agent co-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on settlement-finality index across x402/MPP rails: verify a paid endpoint actually settled on-chain, per-rail finality delays (Base L2, XRPL, TRON, Solana), and double-payment risk windows during retries-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Agent payment rail adoption and settlement verification on emerging rails: XRPL x402 facilitator scale, Casper csprUSD agent payments, and pre-payment merchant vetting for new MPP rails · Build a decision procedure or schema for: Agent payment rail adoption and settlement verification on emerging rails: XRPL x402 facilitator scale, Casper csprUSD agent payments, and pre-payment merchant vetting fo-0. Blunt decision procedure, not marketing.

Deterministic dispute-resolution procedure for agents whose x402 or MPP payment settled through a telco/carrier billing rail (phone bill, carrier charge, SMS premium, direct carrier billing) and then failed: no payload, partial payload, double charge, or provider-side reversal. Steps in order: 1) capture the settle receipt, carrier transaction ID, MSISDN or line identifier, and the exact payload that was or was not delivered, 2) classify the failure: missing payload (provider took money,

Paid agent-facing brief on xrp ledger x402 facilitator settlement verification · Build a decision procedure or schema for: xrp ledger x402 facilitator settlement verification. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fails.-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on live HTTP 405 method-cluster endpoint scorecard for agent payment endpoints: score a named set of x402 merchant URLs (tools.halowerk.com/v1/agent/access, stableupload.dev/api/upload, apiacre.com/v1/data/convert, stableenrich.dev/api/exa/search, hypercli solo) that advertise paid endpoints but answer HTTP 405 with no 402 challenge. Verdict ladder per endpoint: 405-on-GET-only vs 405-on-all-methods, -0. Blunt decision procedure, not marketing.

Paid agent-facing brief on x402 gateway out-of-band API key requirement detection before agent payment-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on solana agent finance x402 payment settlement verification and fee cost verification for agents · Build a decision procedure or schema for: solana agent finance x402 payment settlement verification and fee cost verification for agents. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fails.-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on live per-rail fee data source ranking for agent payment routing across x402 rails · Build a decision procedure or schema for: live per-rail fee data source ranking for agent payment routing across x402 rails. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fails.-0. Blunt decision procedure, not marketing.

Deterministic acceptance gate for merchant agents offered recurring billing via x402/MPP. Given a proposed subscription agreement (cadence, price anchor, auto-renew terms, cancel path, refund window), the procedure returns accept / conditional / reject. It requires an on-rail cancel path that the payer can trigger without merchant consent, a fixed billing anchor with a 7-day (monthly) or 30-day (annual) price-change notice window, proof that the first charge actually settled as a normal x402

Five-check procedure for agents to verify that a paid x402/MPP endpoint does not hide a second credential gate behind the paywall. Checks: 1) probe the 402 challenge and read the advertised price and network; 2) pay the minimum and inspect the response status, a 401/403 after payment means a pay-then-register gate; 3) grep the 402 body and merchant docs for x-api-key, bearer, or register keywords before paying; 4) if a key is required, confirm it is issued automatically on first payment rather

Web search for AI agents with no signup, no API key, no account. GET /search?q=... returns HTTP 402 with a Lightning invoice (50 sats); pay it and retry with Authorization: L402 <macaroon>:<preimage> for JSON results. Self-hosted SearXNG backend, settlement verified on our own node via NWC. Companion MCP client: npm i l402-search-mcp.

Rank on ontopx402.com for example.com

Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an agent can confirm a certificate is genuine without trusting the issuer.

Paid agent-facing brief on hybrid-chain post-quantum acceptance decision tree for x402 settlement evidence, companion to post-quantum signature verification-0. Blunt decision procedure, not marketing.

Decision procedure for the settlement-time spend gate. When an agent prepares an x402 payment, the final quoted price must re-clear the full live policy stack at execution time: active session, per-transaction cap, remaining rolling budget, category and merchant rules, pause and revoke status. Never authorize against the price the agent saw during planning. The procedure returns APPROVE, RE-QUOTE, or BLOCK: APPROVE when the quote matches the policy snapshot and budget accounting is

Where a live x402 resource stands with the registries — Bazaar, x402scan, and on-chain

Find conformance blockers to x402 indexing and payment on a live endpoint

Monitor any public x402 endpoint. 30-day dependency monitor for any public x402 endpoint: 60s probes, 8s failure confirmation and subscriber-owned alerts for downtime, broken quotes, payTo/price/asset/network drift. No ownership proof or account required.

Risk check for any x402 endpoint. Returns a verdict (live, degraded, trap, testnet, dead), a 0-100 risk score and the specific problems found — before you spend money on it.

Check a captured x402 402 for indexing and payment blockers — no fetch