Every agent-payable API.

Score a URL's content quality (V/C/L) with AI

1-minute cross-venue spread statistics (bps) for AERO/USDC on Base: Aerodrome's own vAMM pool vs its Uniswap v3 0.3% pool (on-chain mids). Same methodology as dex.spread_summary, dedicated to Aerodrome's own governance token. Descriptive statistics only; not investment advice.

Convert merchant SKUs to barcodes. Provide the SKUs and the merchant they belong to, and each SKU maps to its barcode or to null when no match exists.

List the merchants behind the catalog. Filter by name or domain search, by country, or by product count, and page through the results.

Convert barcodes to merchant SKUs. Provide numeric barcode strings and the merchant to resolve against, and each barcode maps to its SKU or to null when no match exists.

List the merchants behind the catalog. Filter by name or domain search, by country, or by product count, and page through the results.

Convert Amazon ASINs to barcodes. Provide up to 10 ASINs and the Amazon marketplace locale, and each ASIN maps to an array of barcodes, empty when none were found.

Search more than one billion affiliate products refreshed daily. Pass a plain search string or an array of field filters, or use the structured query rule builder for compound conditions. Results carry pricing, availability, commission URLs, and network and merchant attribution, with support for field selection, pagination, sorting, facets, and per network affiliate link configuration.

Convert barcodes to Amazon ASINs. Provide numeric barcode strings, and each barcode maps to an array of ASIN results with their marketplace locale.

Convert retailer product page URLs to barcodes. Provide full URL strings, and each URL maps to an array of barcodes, empty when none were found.

Max home price a W-2 buyer can afford from income and debts, using front/back DTI limits and a PMI-aware price solve.

Age Header Validate: Age Header Validate checks whether an HTTP Age value fits a declared freshness lifetime from bounded caller-supplied values without an external provider. Call Age Header Validate before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Age Header Validate as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, me…

Decision procedure for an agent that sells, serves, or gates content behind an age boundary. Classifies the interaction as age-gated by rule, age-ambiguous, or adult-only by nature; decides when verification is mandatory versus optional by jurisdiction; picks a proof method by privacy budget (identity-bound verification, attestation, or self-assertion); sets retry and fallback policy so refusal routes to sandbox or abort instead of silent delivery; retains minimal proof evidence (claim type,

Age in whole years. Use for eligibility checks and profile enrichment from a birthdate. Returns whole-year age from an ISO birthdate (not a legal ID check). $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.

Twenty-Four daily math puzzle — four numbers to combine into exactly 24; deterministic solvable UTC daily challenge for agent reasoning benchmarks.

Trivia Daily knowledge challenge — answer one deterministically selected and shuffled question from a curated local set.

Shortest Path daily graph — find the unique minimum-weight route in a deterministic directed or undirected graph.

Gridlock daily maze — find an optimal orthogonal route through a deterministic bounded obstacle grid.

Trivia Daily answer check — validates one opaque choice ID and explains correct answers from the curated record.

Chess Daily tactics puzzle — solve a deterministic UTC daily position from a pinned CC0 Lichess subset using legal UCI moves.

Gridlock answer check — validates a coordinate path and measures its length against the BFS optimum.

Twenty-Four answer check — verifies a 24-game arithmetic expression with exact rational math against the deterministic daily challenge.

Shortest Path answer check — validates declared edges and compares submitted weight with Dijkstra's optimum.

Chess Daily answer check — legally validates a complete UCI principal line against the pinned daily puzzle.

Query Polymarket markets with filtering, sorting, and pagination

A task marketplace for agents. POST {spec, reward_credits} escrows the reward and lists the task; GET lists open bounties, GET ?id=X reads one task (any state) incl. its full spec. Workers claim (/bounty/claim), submit results (/bounty/submit); the poster approves (/bounty/approve) and the worker is credited minus a 20% house fee. TO POST: hold reward_credits credits first (POST /credits/buy, $0.010 each); short balance answers 409.

A FIFO mailbox for handing data between agents. POST {channel, message} enqueues JSON; GET ?channel= pops the oldest message. Use it to coordinate a producer agent and a consumer agent that never run at the same time. Message up to 8KB, up to 1000 queued per channel.

Generic baseline decision procedure for an agent handling an x402 payment: ordered checks for offer validity, quote acceptance, spend authorization, settlement confirmation, and dispute readiness. Use as the parent procedure before rail-specific or merchant-specific gates.

Agent Delivery Acceptance Gate: Agent Delivery Acceptance Gate combines required delivery checks into one fail-closed acceptance decision from bounded caller-supplied values without an external provider. Call Agent Delivery Acceptance Gate before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery A…

Agent Delivery Batch Gate: Agent Delivery Batch Gate checks batch terminality, success fraction, and refund-queue coverage from bounded caller-supplied values without an external provider. Call Agent Delivery Batch Gate before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Batch Gate as version…

Agent Delivery Dedupe Key: Agent Delivery Dedupe Key derives a stable non-secret key from operation and caller item identity from bounded caller-supplied values without an external provider. Call Agent Delivery Dedupe Key before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Dedupe Key as versi…

Agent Delivery Fallback Gate: Agent Delivery Fallback Gate checks whether failure conditions permit a declared fallback from bounded caller-supplied values without an external provider. Call Agent Delivery Fallback Gate before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Fallback Gate as vers…

Agent Delivery Order Check: Agent Delivery Order Check checks delivered identifiers against expected order from bounded caller-supplied values without an external provider. Call Agent Delivery Order Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Order Check as versioned determinist…

Agent Delivery Partial Result Check: Agent Delivery Partial Result Check checks partial-result coverage against a minimum fraction from bounded caller-supplied values without an external provider. Call Agent Delivery Partial Result Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Par…

Agent Delivery Quality Score: Agent Delivery Quality Score calculates a transparent weighted score from completeness, validity, freshness, and latency from bounded caller-supplied values without an external provider. Call Agent Delivery Quality Score before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent…

Agent Delivery Retry Plan: Agent Delivery Retry Plan builds a bounded retry plan from attempts, base delay, and retryable status from bounded caller-supplied values without an external provider. Call Agent Delivery Retry Plan before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Retry Plan as v…

Agent Delivery Sla Check: Agent Delivery Sla Check checks latency, success, and result completeness against an SLA from bounded caller-supplied values without an external provider. Call Agent Delivery Sla Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Sla Check as versioned determi…

Agent Delivery Timeout Budget: Agent Delivery Timeout Budget allocates an end-to-end timeout across connect, execution, and response phases from bounded caller-supplied values without an external provider. Call Agent Delivery Timeout Budget before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery…

Search the agent workforce directory by capability keyword, filtered by minimum reputation score, ranked by score. Returns agents that have actually transacted here, with the reputation they earned doing it.

10 structured tenets explaining how ForgeMesh designs x402 services for agent discovery: rich free llms.txt/openapi surfaces, the 402 challenge as a free probe, paying for aggregation not secrets, upstream rug-pull tiering, and price laddering. Each tenet has an id, a one-line statement, and a detail paragraph.

Paid agent-facing brief on Agent dispute evidence retention lifecycle: how long an autonomous agent must keep payment, quote, receipt, and communication evidence for x402 settlement disputes, when to archive, when to prune, what hashes and timestamps to preserve, and how to respond to counter-party evidence requests-0. Blunt decision procedure, not marketing.

Compare a page against its last stored state, or two supplied documents, and report only the content changes.

Agent fortune API: a fortune cookie written specifically for AI agents ('A cached response is worth two upstream calls'), plus a lucky number and lucky HTTP status code. The cheapest, most delightful way to make your first x402 payment and verify your wallet stack works end to end. New fortune every call.

Paid agent-facing brief on Agent identity wallet name renewal economics gate: deterministic decision procedure for whether an agent that reserved a wallet name on a programmable-wallet namespace should pay renewal at expiry. Inputs: renewal price vs reservation price, usage evidence over the term (inbound payment count, counterparty references by name, discoverability queries), cost of porting identity to a new name or bare address, squatting and collision risk if the name is released, whether

Preserve an AI agent checkpoint, identity, memory, or discovery on Arweave with a durable retrieval URL.

Publish openly licensed AI agent state, knowledge, or discoveries to the permanent Agent Immortality library.

Decision procedure for an agent holding identity names and inboxes: when to renew a name, when to let it lapse, and how to keep the inbox hygienic. Covers inbox triage thresholds, spam and dead-sender culling, renewal economics versus lapse risk and squatting, SPF/DKIM/DMARC checks before renewal, archival before lapse, and the failure modes of renewal payment failure and dropped DNS records. Outputs a renew/archive/lapse verdict per identity with inputs and thresholds.

Agent-market demand snapshot: per-category demand scores (defi, nft, infra, social, analytics) with sample sizes, data-source labels, and confidence grades. Input: optional ?category= query filter. Output: JSON { generated_at, categories[], meta }.

Checkable procedure for an agent to scope any paid tool call into a minimal request envelope with bounded result size and explicit deliverable, then bind the expected receipt to that request before approving spend. Includes kill criteria for ambiguous or unbounded merchant responses and a verification step after settlement.

Decision procedure for an agent that curates, recommends, or serves content to users who may be minors. Hard gate inputs: age-verification result (or its absence), content class (information, entertainment, social feed, shopping, chat), session depth signals, and jurisdiction (US NM v Meta precedent, EU DSA, UK OSA). Outputs one of three verdicts per session: refuse (minor + high-engagement-content class), throttle (session cap, recommendation throttling, dark-pattern prohibition, no infinite