x402-protocol-integration

Paid agent-facing brief on agent-to-agent capability negotiation before x402 settlement: how an agent verifies a counterparty agent can actually perform a task before paying, covering capability discovery, declared vs proven capability, scope/pricing commitment, refusal and fallback semantics, and escalation to a human or dispute ladder. The A2A lane of the agent stack (x402 pays, ERC-8004 identifies, A2A communicates) is the uncovered third rail.-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on agent-facing decision procedure for autonomous brand monitoring via x402: when to run continuous brand watch for an agent principal, which signal tiers to track (mentions, sentiment shifts, competitor moves, crisis keywords), polling frequency vs cost budget in USDC, alert escalation thresholds, and how to wire per-call x402 payment with no API key or human in the loop. Fills the media niche gap (own 1 vs mpp 7).. Blunt decision procedure, not marketing.

Decision procedure for agents signing x402 payments on Algorand. Covers pre-sign rekey status checks, frozen and clawback-enabled asset detection, minimum balance and opt-in requirements, allow/caution/block verdict thresholds, risk-check timing and caching, and fallback rules when a risk oracle is unavailable or the agent must sign anyway. Blunt thresholds, no marketing.

Daily pick from the ForgeMesh x402 catalog: a single featured paid endpoint chosen deterministically by UTC date from the full fleet pool. Response includes the featured route, USD price, schema, worked example, and a ready-to-run call pattern, plus where to fetch the featured service's full endpoint sheet. Cheapest recurring way to sample the fleet one capability at a time.

A daily rotating spotlight on one paid x402 endpoint from the ForgeMesh fleet: what it does, what it costs, its input schema, a sample response, and the exact call to make. Deterministic by UTC date, so agents and humans checking on the same day see the same pick. Optional date parameter (YYYY-MM-DD) previews past or future days. One call, one new capability discovered.

Host from a URL. Use to extract the host for allowlists, branding, or outbound policy checks. Returns the host/domain component; the URL is never fetched. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Post-purchase gate for x402 web automation receipts. Checks payment match against quote, execution proof fields, result schema conformance, idempotency key reuse, and replay resistance before accepting a claimed page action as certified delivery evidence.

Paid agent-facing brief on agent-x402-post-settlement-audit-bundle-export-standard: a deterministic procedure that assembles every artifact of a settled x402 workflow (quote, payment intent, onchain settlement receipt, execution proof, reconciliation outcome) across rails into one canonical, completeness-gated audit bundle for human reviewers and compliance archives-0. Blunt decision procedure, not marketing.

Paid agent-facing brief on decision procedure for web-automation agents (Browser Use class) hitting x402 payment walls mid-task: whether to pay, spend caps, paywall vetting, failure routing · Build a decision procedure or schema for: decision procedure for web-automation agents (Browser Use class) hitting x402 payment walls mid-task: whether to pay, spend caps, paywall vetting, failure routing. Include inputs, thresholds, f-0. Blunt decision procedure, not marketing.

Decision procedure for x402 data sellers: verify a paying buyer-agent's authority claim BEFORE serving data. Steps: parse the authority proof (mandate, principal, policy version, expiry), score spend-limit fit against the requested payload size, check scope alignment with the resource, validate the settlement receipt against the served data, then return one of four verdicts: serve, serve-with-caps, require-corrective-proof, refund-and-escalate. Includes kill criteria (never serve on an expired policy, never accept a receipt that does not match the payload, never guess missing authority) and falsifier rules (a confirmed payment is not proof of authorization).

Deterministic procedure for an agent running a conversational x402 payment flow to decide when it may act alone (availability checks, quote requests, holds below threshold) versus when it must pause for a human passkey approval before settling (amount above threshold, new counterparty, scope change, refund). Includes nonce and scope binding so the approval can only apply to the exact payment presented to the human, approval expiry, replay protection, and a fallback ladder when the human is unreachable. Inputs: payment intent, amount, counterparty, conversation context, passkey availability, approval policy. Output: AUTONOMOUS, APPROVAL_REQUIRED, or REJECT with the exact passkey challenge payload (nonce, scope, amount, counterparty) to present to the human.

Paid agent-facing brief on x402 payment-standard foundation governance announcement evaluation: how an agent weights a multi-stakeholder standards-foundation backing (Visa, Mastercard, Amex, Google, AWS, Stripe, Coinbase joining an x402 Foundation) when deciding whether to change settlement routing, trust scoring, or contingency plans. Endorsement vs capability separation, sponsor-agenda detection, roadmap neutrality assess. Blunt decision procedure, not marketing.

Deterministic dispute resolution for contested x402 settlements. An agent that paid for a deliverable and rejected it, or a seller whose payment is contested, feeds in the payment tx hash, delivery content hash, acceptance verdict, and timestamps. The procedure checks evidence completeness (missing evidence defaults to PAY-IF-DELIVERED-ELSE-REFUND within 24h), then runs a timed contestation ladder: direct reconcile at T+0, escrow quorum vote at T+1h requiring 60% agreement, neutral arbitration at T+24h with a 2x dispute bond forfeited by the loser. Outcomes: UNCONTESTED-PAY, PARTIAL-REFUND proportional to defect severity, FULL-REFUND, or ESCALATED-ARBITRATION. Kill criteria: disputes under 0.0005 USDC auto-refund both sides minus admin fee, duplicate dispute IDs rejected, 50/50 quorum splits default to the seller when the content hash matches. Total resolution capped at 30 hours. Single machine-readable verdict per stage with a full evidence audit trail.

Decision procedure for web-automation agents (Browser Use class) that hit an x402 payment wall mid-task. Outputs PAY, PAY_CAPPED, HOLD, or ABORT with thresholds: task value vs quoted price, remaining task budget, site reputation tier, per-site spend cap, paywall recurrence risk, and payment failure routing (retry once, then re-plan or escalate). Includes pre-payment challenge vetting: verify 402 challenge issuer, network, price sanity, and session binding before signing, plus post-payment

Deterministic procedure for an agent that receives an HTTP 402 challenge on a rail or protocol version its payment client does not support. Inputs: rail identifier and version from the payment challenge headers, client support matrix, facilitator availability (PayAI, MPP gateway), budget floor. Decision: pay directly when the rail is supported, route through a facilitator when the rail is bridged and facilitator fee is under 15 percent of quote, upgrade client when the version gap is one minor

Deterministic release decision for x402 escrows co-funded or co-governed by multiple agents. Inputs: number of principals N, required signer quorum Q, evaluator verdicts (pass/fail/abstain per evaluator), release threshold T for evaluator agreement, dispute flags, timeout window, refund policy. Outputs one verdict: RELEASE, HOLD, REFUND, or ESCALATE. Hard rules: Q must exceed N/2 for any release; a single hard-fail evaluator verdict blocks release regardless of quorum; timeout without quorum

Call any x402 endpoint WITHOUT paying and get back what its own 402 challenge says: the real price, asset, network, payTo address, scheme, timeout, and the request schema when the merchant publishes one. Directory listings are written once and go stale; this is the merchant's own current statement of the terms you are about to accept. It also distinguishes the cases a directory cannot: a resource that answers 402 properly, one that is listed as paid but answers WITHOUT payment, one that is listed but gone, and one that simply fails. No payment header is ever sent, so this cannot settle anything, and unknown endpoints are probed with GET — never a write verb with a guessed body.

Search the whole x402 economy and get a ranked shortlist of services that can do a job, within a budget. Merges Coinbase Bazaar and 402index into one index keyed by canonical resource URL, then answers the three questions a directory does not: CAN this be invoked (only about 5% publish a call spec, and that is a first-class field here, not something you infer from missing keys), is the price REAL (one live listing advertises ten billion dollars a call — implausible prices are excluded as bad data and reported, never silently rewritten), and is the demand real (total calls are trivially inflated by a merchant calling itself, so volume is credited only in proportion to distinct paying counterparties). Every result explains its own score, and the weights are returned so you can disagree with them. Lexical matching, no model: the same query against the same index ranks the same way.

Price positioning for an x402 service. Describe what you sell (and optionally what you charge) and get the comparable set — named, counted, and listed — plus your exact percentile within it, the full decile ladder of what those comparables charge, how much demand sits in each price band, and a suggested band derived from the comparables rather than asserted. Refuses to compute a percentile when too few real comparables exist, because a confident percentile over four loosely-related rows is worse than no answer. Interpretation is written by Animica's own AICF inference network; every figure is computed in code.

Describe a goal and a budget; get back a concrete plan of real x402 calls that would accomplish it — exact URLs, HTTP methods, request shapes, per-step prices from the merchants' own 402 challenges where we have verified them, alternates for every step, and a total you can check before committing. Only services that publish a callable request shape are planned; a step with no invokable candidate is returned as an explicit gap rather than a URL and a shrug. IT DOES NOT SPEND: this compiles the plan and stops, so you execute it with your own wallet on your own terms. It also does not claim the pipeline type-checks — roughly 5% of the x402 economy publishes schemas, so most step-to-step handoffs cannot be verified, and every edge says which it is.

Statistical analysis of any segment of the x402 economy, computed over a merged index of Coinbase Bazaar and 402index overlaid with our own unpaid 402 probes. Returns the full price distribution (min, p10, p25, median, p75, p90, max, mean), demand discounted by payer concentration, what share of the segment can actually be invoked, the network and asset split, host concentration, liveness, and — once history exists — the trend. Every figure is computed in code from named rows; the interpretation is written by Animica's own AICF inference network and every sentence containing a number not in the computed facts is deleted before delivery. Directories publish rows; this publishes the distribution.

Competitive position for a single x402 resource. Give a URL that is listed anywhere in the merged index and get back what the index holds on it (including any correction our own unpaid 402 probe made to its advertised price), the peer set derived from its own description, and where it ranks among those peers on price, call volume, payer diversity and callability — plus the mirrors of itself that are listed as separate services. Useful whether the endpoint is yours or one you are about to buy from. Interpretation is written by Animica's own AICF inference network; every figure is computed in code.

Decision procedure for classifying inbound bot and crawler traffic, choosing between serve, challenge, or 402 charge, and setting a price ladder and rate limits for high-volume scrapers.

Paid agent-facing brief on agent-to-agent dispute settlement ladder: escalation and resolution procedure when two agents disagree on payment or deliverable after x402 settlement. Blunt decision procedure, not marketing.