x402-protocol-integration

Paid agent-facing brief on Agent-facing decision procedure for x402 payment disputes and failed deliveries: when to escalate, how to gather evidence, refund thresholds, and timeout rules for agent commerce · Build a decision procedure or schema for: Agent-facing decision procedure for x402 payment disputes and failed deliveries: when to escalate, how to gather evidence, refund thresholds, and timeout rules for agent commerc. Blunt decision procedure, not marketing.

Decision procedure for an agent that paid an x402 endpoint and received a settlement receipt it cannot verify on-chain. Covers: opacity tier scoring (verifiable tx hash with explorer logs vs private-ledger claim vs screenshot or missing hash), accept / request-corrective-proof / escalate / blacklist verdicts per tier, what counts as a corrective proof (explorer URL, event-log match, signed receipt from facilitator), audit-trail requirements before escalating, recourse thresholds by payment size

Decision procedure for agents buying onchain data via x402: choose provider per investigation type (Arkham, Nansen, Dune, Allium), set per-query budget caps, verify returned wallet activity against a second source, and decide when free explorers or public RPC suffice. Includes thresholds, failure modes, and spend stop-loss rules.

Implement the L402 protocol yourself, no platform required. Protocol deep dive (macaroons, payment hashes, preimages), full implementations in Node.js / Python / Go, LND integration, production hardening (replay prevention, rate limiting, key management).

Implement L402 protocol � full implementations in Node.js, Python, and Go

Multi-vendor API marketplace � proxy architecture, revenue splitting, vendor onboarding

Monetize real-time data feeds � token refresh, metered streaming, WebSocket L402 handshake

Monetize real-time data feeds and persistent connections with L402. Token refresh patterns, metered streaming (per minute / message / MB), WebSocket L402 handshake, Server-Sent Events with periodic re-auth, prepaid credit model, complete market data feed example.

Public L402 test endpoint. Pay 1 sat to verify your L402 integration works. Returns pong on successful payment. No API key required.

Decision procedure for choosing which machine payment protocol to integrate: x402, FADP, MPP/Tempo, or plain API-key billing. Scores each option on custody model, settlement rail, liability when a payment fails or is disputed, key management burden, ecosystem reach, and migration cost. Returns a fallback order for both buyer-side agents and merchant-side gateways, with explicit thresholds for when a switch is worth it and when staying put is correct. Blunt and executable, not marketing.

Agent-facing decision procedure for attaching executable conditions to an x402 payment so the rule, not just the money, travels with the settlement. Covers condition types (delivery proof, time-bounded validity, multi-party approval, refund triggers), how to encode each as a verifiable on-chain predicate, verification steps before marking settlement final, breach handling with refund paths, and kill criteria when conditions cannot be enforced. Inputs: payment intent, counterparty address,

Request 1 to 10 grant records. x402 upto authorizes limit times $0.002. Settlement costs $0.002 for each returned record. The maximum price is $0.02 for 10 records.

Agent Vetting Bureau — Deeper deterministic probe: x402 manifest compliance, live challenge behaviour, rate-limit headers, idempotency support, security headers. Params: url.

Decision procedure for agents running real-time chain scanners, price feeds, or event monitors that pay per x402 call only when a signal fires. Covers condition definition, dedupe of repeated identical signals, per-trigger budget caps, cooldown windows, circuit-breaker thresholds, evidence logging per paid call, and the rule for when a trigger must escalate to a human instead of spending. Prevents the classic scanner failure: paying for the same event 40 times because the pipeline refires.

Decision procedure for agents buying onchain data via x402: choose provider per investigation type (Arkham, Nansen, Dune, Allium), set per-query budget caps, verify returned wallet activity against a second source, and decide when free explorers or public RPC suffice. Includes thresholds, failure modes, and spend stop-loss rules.

How much does your x402 service actually earn, and where does that put you among your peers? We measure real USDC inflows to every payTo address in the Bazaar catalog over 30 days and return the distribution. Pass ?domain=<yours> for your own revenue, calls, unique payers and percentile, plus the cohort of services in your price band. Omit it for the market distribution alone. Individual competitors are never listed. Measured, not estimated.

Proxy the corresponding X API v2 endpoint. x402 authorizes up to $2.00; successful responses settle at X's documented per-resource/per-action price.

Proxy the corresponding X API v2 endpoint. x402 authorizes up to $10.00; successful responses settle at X's public non-owned per-resource/per-action price.

Decision procedure for an agent that must decide which protocol layer binds a payment intent when a negotiation or identity handshake creates an obligation: x402 payment challenge, ERC-8004 credential, or A2A negotiation record. Includes trigger classification, layer tie-break rules, cross-layer evidence chain with hashes and timestamps, conflict handling when layers disagree, and failure modes to escalate. Machine-readable verdict output.

Decision procedure for an agent holding a payment intent that can be settled via multiple protocols: x402, AP2, or MPP. Covers protocol capability checks against the merchant offer, intent normalization across protocols, cost and latency comparison, scoped-account policy envelope checks (approved intent, policy expiry, spending caps) before routing, a single-routing rule so one intent is never double-settled across protocols, re-quote fallback, and receipt binding to the chosen protocol.

Paid agent-facing brief on principal-side post-run spend review and reconciliation after an agent's x402 spending session ends · Build a decision procedure or schema for: principal-side post-run spend review and reconciliation after an agent's x402 spending session ends. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fails.. Blunt decision procedure, not marketing.

Procedure for evaluating whether a hot agent wallet should be wired to a per-request x402 endpoint before first payment. Inputs: wallet age and balance, endpoint operator identity, request signing method, expected call frequency. Outputs: exposure score 0-100, signing-fatigue risk when expected calls exceed 20 per hour per session, payment-request forgery checks (mutating a signed request body or amount must invalidate the signature), quota-drain detection rule (reject payees whose response size is under 1 KB while charging over 0.005 USDC), wallet correlation risk when the same address pays 3+ intelligence vendors from one identity, per-payee blast radius cap at 10% of wallet balance, isolation verdict (dedicated sub-wallet required above score 60), and an equivalence falsifier that rejects an endpoint if a cheaper mirror serves the same data.

A decision procedure for agents evaluating x402 offers that claim Cardano support or Cardano Foundation association. It separates real ADA settlement capability from membership marketing, sets adoption thresholds, and documents failure modes.

Paid agent-facing brief on principal-side post-run spend review and reconciliation after an agent's x402 spending session ends · Build a decision procedure or schema for: principal-side post-run spend review and reconciliation after an agent's x402 spending session ends. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fails.. Blunt decision procedure, not marketing.