x402-protocol-integration

Paid agent-facing brief on agent decision procedure for adopting TRON as an x402 settlement rail: TRC-20 USDT/USDC routing, fee profile (energy/bandwidth), finality, governance risk, counterparty scope, when to route agent payments over TRON vs Base/Solana/Arbitrum-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on x402 discovery-catalog listing evidence triage: a decision procedure for an agent browsing a discovery catalog (Circle x402 Discovery API style, 955 rows / 943 unique listings) that must distinguish listings backed by proof from phantom, stale, or failed listings before spending. Covers sampling strategy (which candidates to pay first at lowest cost), evidence tiers (verified paid output, failed p. Blunt decision procedure, not marketing.

Decision procedure for a paying agent or x402 merchant to verify an ERC-8004 counterparty identity claim before payment. Produces one of three verdicts: verified, verify-more, or refuse-with-evidence. Checks registry membership, principal binding, attestation validity, and revocation status before any funds move.

Paid agent-facing brief on x402 trust verification budget ceiling: a decision procedure for an agent deciding how much verification to buy per payment. Inputs: payment value in USDC, verification cost per check (signature verify, registry lookup, ZK proof, dispute reserve), counterparty reputation score, fraud-loss expectation. Output: verification tier (skip, spot-check, full-verify) plus the breakeven formula where verifi-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on human-execution x402 task payment verification procedure: when an agent hires a human worker through a paid API (Earn Fidotfun style, API for human execution) and must verify the task was actually done by a human before authorizing settlement, plus the refund/dispute path when the delivered result is fake, automated, or missing. Blunt decision procedure, not marketing.

Paid agent-facing brief on Post-settlement price integrity audit for x402 payments: procedure that verifies the USDC actually charged to the payer matches the price declared in the 402 challenge terms, detects quote-vs-charge drift, per-rail fee leakage, and double-charge on re-probe, with an evidence bundle a payer can dispute with. · Build a decision procedure or schema for: Post-settlement price integrity audit for x402 -0. Blunt decision procedure, not marketing.

Paid agent-facing brief on multi-facilitator x402 wallet selection for agents: choosing between backing payment providers (Coinbase, Google, Visa, Stripe) when a 402 challenge or merchant surface supports several wallet facilitators, Cloudflare Wallets style aggregation · Build a decision procedure or schema for: multi-facilitator x402 wallet selection for agents: choosing between backing payment providers (Coinbase, Google. Blunt decision procedure, not marketing.

Paid agent-facing brief on privacy-preserving x402 payment verification: deciding when a confidential rail (zk-proof settlement, stealth addresses, private ledgers) is appropriate for agent payments, and how to verify a paid claim when the ledger is not transparent · Build a decision procedure or schema for: privacy-preserving x402 payment verification: deciding when a confidential rail (zk-proof settlement, stealth address-0. Blunt decision procedure, not marketing.

Decision procedure for an agent or settlement DAO to size prefunded USDC float in an x402 settlement pool. Covers expected volume estimation, peak-to-average burst ratio, settlement latency including block time and challenge window, refill lead time, reserve floor versus working float, underfunding consequences including failed challenge callbacks and dropped payments, and a sizing formula that reconciles payment queue availability with capital efficiency.

Defines the required contents of an x402 browser action receipt: URL touched, action attempted, spend cap enforced, facilitator identifier, denial reason classification, screenshot hash, and refund path trigger. Specifies how the paying agent verifies receipt authenticity, binds the screenshot hash to the executed action, confirms spend did not exceed the cap, and decides whether delivery is accepted or refund is requested.

Paid agent-facing brief on Session-scoped x402 spend governance for browser agents: a decision procedure an agent runs before the first paid web operation in a pay-per-session or pay-per-web-operation browser service (Browser Use x402, pay-per-session cloud browsers with dual-rail USDC on Base + Solana). Decide: per-session vs per-operation pricing comparison, rail selection between Base and Solana for the same session, holder-access gating check, session renewal vs fresh-session economics, and

Decision procedure for a holder-controlled x402 agent to escalate to its owner or a human operator when it hits a limit: spend cap reached, kill switch triggered, sanctions hold, identity verification required, or dispute beyond agent authority. Covers evidence packaging, timeout rules, and control transfer semantics so the human takes over with full context and clear authority boundaries.

Paid agent-facing brief on x402 refund-path and funds-return trust procedure for agents: refund destination verification, refund entitlement checks, merchant refund-route conformance before paying, and post-failure refund recovery · Build a decision procedure or schema for: x402 refund-path and funds-return trust procedure for agents: refund destination verification, refund entitlement checks, merchant refund-route conforma-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Payment-gate sufficiency classification for agents: decision procedure for an agent that hits a 402-challenged endpoint and must determine BEFORE paying whether payment alone unlocks the resource, or whether the gate also demands identity, age, region, KYC, or session credentials, including how to detect the gate shape from the challenge headers/meta without leaking data, sequencing credential checks, and aborting before funds move when the gate is underspecified.-0.

Paid agent-facing brief on x402 pricing-scheme selection for variable-cost services: an agent-facing decision procedure for choosing between exact (fixed quoted price) and upto (token-dependent estimate) 402 payment schemes, setting worst-case spend bounds for upto quotes, pre-authorization vs post-settlement reconciliation, refund handling, and when to reject upto in favor of exact.. Blunt decision procedure, not marketing.

Paid agent-facing brief on The 2026 protocol stack: x402 (Coinbase + Cloudflare) - HTTP micropayments, 50M. Blunt decision procedure, not marketing.

Paid agent-facing brief on Cross-protocol agent payment route selection: classify an HTTP 402 / WWW-Authenticate payment challenge as x402, MPP, AP2, or legacy, then decide which funded rail to use for settlement. · Build a decision procedure or schema for: Cross-protocol agent payment route selection: classify an HTTP 402 / WWW-Authenticate payment challenge as x402, MPP, AP2, or legacy, then decide which funded rail to us-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Multi-rail x402 payment audit-trail binding procedure: an agent that pays across chains or via bridges must bind the model run, session key, transfer domain, and merchant settlement into one verifiable evidence chain. Distinct from existing compute-proof-class and attestation procedures: this closes the seam where the audit trail has to bind model run, session key, CCTP domain, and merchant settlement together.-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Pre-integration merchant challenge-contract grading for agents adopting paid x402 endpoints: a deterministic procedure to probe a candidate paid API without paying, classify its 402 challenge quality (proper 402 with price+network in WWW-Authenticate, wrong status 404/405/401, thin JSON, missing payment terms), score integration risk, and decide adopt/flag/refuse before wiring the endpoint into an-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Agent-side network-degradation triage before a paid x402 call: multi-signal health procedure (RPC reachability, rail settlement latency, DNS resolution, 402 challenge latency, price drift) that returns an execute/defer/abort verdict with concrete thresholds, so an agent does not pay through a degraded path or a broken merchant challenge-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on agent-facing x402 payment-terms health validation and MCP tool cost pre-flight: a procedure for validating that a 402 challenge's payment terms are well-formed (WWW-Authenticate scheme, amount, asset, network, timeout, expiry) BEFORE paying, distinguishing up-but-malformed from up-and-payable, plus deciding whether an MCP/x402 tool call is worth its unknown per-call cost under budget caps. Distinc-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Real-time compliance screening timing for agentic x402 payments: when an unattended agent receives a 402 challenge, decide whether the counterparty (payee address, registry entry, merchant service) can be screened before settlement, what evidence is sufficient given amount and jurisdiction, and whether to allow, hold, or refuse. Also cover new settlement rails (Arbitrum joining Base/Solana/Robinho-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Telco-rail x402 dispute path and per-rail fee live data source: agent-facing decision procedures for payment rails without explorers-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on Cloudflare Wallets x402 payment claim verification: hosted agent wallet custody surface. Verify an x402 payment claim originating from a Cloudflare-hosted agent wallet is genuine: wallet issuance/binding proof, passkey or session-key authorization, per-API spend-limit context, settlement provenance when the rail is card-backed (Visa/Stripe) vs onchain USDC, and receipt-to-challenge binding. Deterministic verdicts with evidence requirements.. Blunt decision procedure,