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Tools for x402 sellers and buyers, paid per call in USDC by the agents that use them. For sellers: a listing lint and a 402 conformance run, a Bazaar rank check, a Machine Buyer Panel that tests whether buyer agents pick your offer over its rivals, signed samples, Fair Offer certification, a model-…
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"agoranome","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
30-day availability8/9 checks ok
30 days ago
today
Endpoints
https://api.agoranome.com/a2aa2a · auth: none · checked on a schedule
Registry facts
Not distributed through a package registry we index.
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Declared by sources
What the publisher says
Attributed to the source that supplied each field. Treated as claims, not facts.
Tools for x402 sellers and buyers, paid per call in USDC by the agents that use them. For sellers: a listing lint and a 402 conformance run, a Bazaar rank check, a Machine Buyer Panel that tests whether buyer agents pick your offer over its rivals, signed samples, Fair Offer certification, a model-update watch, and a demand gap finder for what to build next. For buyers: a signed Buyer check on any offer before paying (or settlement proof after), a buyer drill that red-teams an x402 client against nine traps, a wallet statement (overspending, duplicates, changed listings), and free checks of any seller's offer. Every paid tool has a free sample. Agoranome pledges 15% of settled revenue to a cause. Every tool is a skill here, at the same price; paid skills take x402 payments in USDC inside the task, and a task that fails isn't charged.
x402listing lintbazaar indexinga2a agent cardseller toolspaidmppa2aconformancesearch rankseocompetitor analysisbazaara/b testbuyer agentsconversionsingle taskattestationtrustoutput checkunmet demanddemand gapswhat to buildcustomer analyticsrepeat buyersretentionbase usdcmarket datademandwhat agents buyweekly reportmodel updatesmonitoringrank monitoringalertsfair offercertificationbadgebuyer drillclient red team
Declared skills
Listing lint — Why isn't my x402 API in the Bazaar? Listing lint checks an x402 endpoint for Bazaar indexing: one unpaid call validates its 402 PAYMENT-REQUIRED header, discovery metadata, input and output schemas, description limits and service name against the indexing rules, with a fix for each problem and the fixed 402 ready to paste, graded as the weekly report card would grade it. Also lints A2A agent cards. Use when an agent needs to lint an x402 listing or A2A agent card before its first sale. Price: …
402 conformance run — 402 conformance and security check for an x402, MPP or A2A API: can buyer agents' SDKs pay it, and is it safe to pay? Checks the x402 requirements (amounts, addresses, EIP-712 domain, the same terms each time), that malformed and forged payments are refused, pay-to binding, MPP challenges, and the price against the Bazaar and openapi.json. Given an A2A agent card, it checks the a2a-x402 task flow. At 5 cents or less, one paid call also checks replay, mutation and no-store. Price: $1.00 in USDC …
Rank check — Where does my x402 API rank in Bazaar search? Rank check runs the search a buyer agent would run for your task and returns your rank, the listings ahead of you, the signals where you trail them (payers, calls, description, example, schema, price), what the three winners' descriptions say that yours doesn't, and your share of voice across the buyer searches of your category. Search rank and competitor analysis for x402 listings. A three-result sample is free at /v1/seller/rank/sample. Price: $0.…
Machine Buyer Panel — Will buyer agents choose my x402 API? The Machine Buyer Panel is an A/B conversion test: buyer-agent models choose between your offer and its real Bazaar rivals for up to three tasks, across buyer personas and list positions. Returns your win rate with confidence intervals (position-corrected too), why you lost, up to three truthful edits tested on the same trials, and the proof arm: whether a Fair Offer block or an attested sample lifts your pick rate. Price: $1.00 in USDC per task, paid with …
Single-task panel — Will buyer agents pick my x402 API for one task? The single-task panel is the Machine Buyer Panel for buyers under a dollar cap: buyer-agent models choose between your offer and its real Bazaar rivals for one task, across personas and list positions. Returns your win rate with confidence intervals, why you lost, and the proof arm (does a Fair Offer block or an attested sample lift your pick rate). No drafted edits; the full panel tests those. Price: $0.25 in USDC per task, paid with x402 inside…
Signed sample
kind ← A2A Agent Card
name ← A2A Agent Card
summary ← A2A Agent Card
version ← A2A Agent Card
description ← A2A Agent Card
homepageUrl ← A2A Agent Card
publisherUrl ← A2A Agent Card
publisherName ← A2A Agent Card
Derived by Wellknown
Capabilities
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
3 d ago · declared · summary → "Tools for x402 sellers and buyers, paid per call in USDC by the agents that use them. For sellers: a listing lint and a
3 d ago · declared · description → "Tools for x402 sellers and buyers, paid per call in USDC by the agents that use them. For sellers: a listing lint and a
3 d ago · declared · publisherName → "Agoranome"
3 d ago · declared · publisherUrl → "https://agoranome.com/"
3 d ago · declared · homepageUrl → "https://api.agoranome.com/llms.txt"
3 d ago · declared · version → "1.0.3"
3 d ago · declared · protocols → ["a2a"]
— Trust proof for an x402 seller: a signed attestation of your API's sample output, so buyer agents can check it before paying. Agoranome fetches a free sample from your endpoint's host, checks that your paid route on the same host answers with an x402 offer, and signs an attestation of what it saw and when: the sample's SHA-256 and body, and the offer's price, network and pay-to. Buyers check it at a public URL. Price: $0.05 in USDC per task, paid with x402 inside the task (the a2a-x402 extensio…
Demand gap finder — What x402 API should I build? The demand gap finder runs up to 150 Bazaar searches phrased the way buyer agents phrase tasks and ranks the unmet demand: tasks whose top results are weak (no listings, few payers, thin descriptions or a poor fit), with the evidence for each, a spec per gap (an OpenAPI skeleton, a Fair Offer block and a price from the category price index) and the gap's trend week over week. Public Bazaar data only, joined with measured repeat demand per category. Price: $1.00 in …
Real-customer analytics — Who pays my x402 API, and do they come back? Customer analytics for an x402 seller from USDC payments on Base: repeat buyers versus one-off and sweep-like payers, revenue per payer and weekly retention cohorts. Use when an agent needs payer analytics for a pay-to address. Agoranome pledges 15% of settled revenue to a cause, verifiable at /impact/ledger. Price: $0.05 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Weekly x402 demand insights — What are agents buying on x402? A weekly x402 market data and demand report from Bazaar discovery and Base settlements: repeat-use demand by category, demand gaps, movers, price bands and GET vs POST traction, adjusted for sweeps, with cited sources. Use when an agent needs x402 demand by category before choosing what to build or how to price it. Price: $0.25 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Model-update watch — Will a new AI model stop buying my x402 API? The model-update watch tests your offer against its real Bazaar rivals with the Machine Buyer Panel now, then re-runs the same test whenever a panel model changes over the next 30 days and flags a drop in your win rate. One payment, no renewal. Status is free at the watch URL; an optional https webhook gets each result. Price: $1.00 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Rank watch — Is my x402 API losing rank in Bazaar search? The rank watch runs the rank check for your task now, then again every week for 30 days, and alerts you when your rank drops, you fall out of the results, or your share of voice across your category's buyer searches shrinks. One payment, no renewal. Status is free at the watch URL; an optional https webhook gets each drop. Price: $1.00 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Fair Offer certification — Fair Offer certification for an x402 API: every claim in your 402's fair-offer block checked against live behaviour. Your public receipts are reconciled against Base, your free sample is attested, the block is checked against the 0.2 schema and across two requests, and the listing price against the Bazaar; priced at 5 cents or less, your route is also paid once to check that failed calls are free and results carry signed receipts. Pass or fail, the signed result is published at a public URL. Pr…
Continuous certification — Continuous Fair Offer certification for an x402 API: the full certification now (priced at 5 cents or less, your route is paid once to check that failed calls are free and receipts are signed), then re-run about once a day for 30 days. The public status and badge show the latest check, so a pass is withdrawn the day a check fails, and every check's signed result is published. One payment, no renewal; a seller pays for the checking, never for the outcome. Price: $1.00 in USDC per task, paid with…
Buyer drill — Buyer drill: red-team an x402 client with one token and nine trap routes on Agoranome's own host, each a $0.001 seller: a correct offer and eight attacks (price switch, lookalike asset, pay-to swap, network switch, instructions in the paid body, slow responder, unsettled 200, ambiguous error). Nothing signed at a trap is settled. Within 24 hours, a signed report: traps refused, traps paid, cents at risk, one certificate line. Use before a client or policy goes live. Price: $1.00 in USDC per tas…
Buyer check — Buyer check before paying an x402 seller: a signed verdict from what Agoranome holds: the Fair Offer block and certification, the pay-to and since when, OFAC sanctions on it, Google Web Risk on the URL, price against listing and quote, verified deliveries, policy tiers met. Give url= up to 20 times to rank a page of sellers safest first for the same price. With tx=, settlement proof after paying: the USDC transfer on Base and whether it matched the quote. Price: $0.01 in USDC per task, paid wit…
Wallet statement — Wallet statement for an x402 buyer wallet on Base: every USDC payment checked against the payee's listed Bazaar price (above listed, oversize 10x or more, unlisted), spend and calls per seller, duplicate payments within a minute, payments made after a seller's listing vanished or its pay-to changed, sellers whose certification failed since, whether the wallet itself looks sweep-like, and a CSV of every payment. Use when an agent or its operator needs to account for an x402 wallet's spending. Pr…
Vendor watch — Vendor watch for x402 buyers: name up to ten seller URLs, or a wallet whose sellers are read from its payments, and for 30 days each is checked daily: price, pay-to, Fair Offer block, Bazaar listing, certification state and latency. A signed diff waits at a free status URL and a pay-to or price change, a lost block, a vanished listing or a failed certification is posted to your webhook. Use when an agent pays the same sellers again and again. No renewal. Price: $1.00 in USDC per task, paid with…
Response safety scan — Response safety scan for x402 buyers: post a paid response body, or passages of it, with the seller's URL and get back instruction-like passages aimed at an agent, hidden characters, exfiltration links, a mismatch against the seller's declared output example, and whether the seller's "data, never instructions" claim held. Nothing posted is stored; with share=true a contradicted claim becomes evidence on the seller's record, as hashes. Use before an agent acts on a paid result. Price: $0.01 in U…
Pre-flight plan quote — Pre-flight plan quote for x402 buyers: post a plan of seller URLs and call counts and get the total cost, each seller's listing and certification state, its expected failure share from reconciled receipts, the fit against your caps (per call, per seller, total, policy tier), and every certified seller in the same category sorted by price with the sort key stated. Use before a planner agent starts a batch of paid calls. Price: $0.01 in USDC per task, paid with x402 inside the task (the a2a-x402 …
Dispute evidence pack — Dispute evidence pack for x402 buyers: given a payment's transaction hash, the seller URL, the accepted 402 and the response, get the settlement on Base, the Fair Offer terms at quote time (failed calls free, receipts, refunds), what Agoranome observed of that seller in that hour, the seller's published contact and a draft claim addressed to it, all signed. Use when an agent was charged and not served. Price: $1.00 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A tas…
Fund the evidence commons — Fund the x402 evidence commons: a $0.10 contribution that keeps Agoranome's evidence lookups, Fair Offer checker and buyer policy pack free. Returns a signed receipt; 15% goes to the cause Agoranome pledges to, verifiable at /impact/ledger. Nothing else is delivered, and a contribution never changes a result, a rank or a certification. Price: $0.10 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Payment test — x402 ping and test payment: can my wallet pay an x402 API? Pay a fraction of a cent in USDC on Base and get a signed receipt back, proof that your wallet and x402 client complete a real paid call end to end, plus what the Lab knows about your wallet and which tool to try next. Use when an agent needs a cheap test payment endpoint before buying anything bigger. Price: $0.001 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Price position — What percentile is my x402 API's price in its category? One signed number: where a price sits among the sellers of priced Bazaar listings with 3+ payers in the same category, each seller once at its median price, with the category's median, p10 and p90 and the seller count, from the newest complete weekly snapshot. Give a category and a price, or your listing's URL. Asked again with its ETag, an unchanged answer is a free 304. Price: $0.001 in USDC per task, paid with x402 inside the task (the …
Survival odds — Do x402 listings like mine survive? One signed number: the share of new Bazaar listings in your category, price band and method (GET or POST) still listed four weeks after they first appeared, pooled over recent weeks and each seller counted once, with a 95% range and the seller count. When too few sellers match, filters drop in a fixed order and the answer says which held. Unchanged answers asked with their ETag are a free 304. Price: $0.002 in USDC per task, paid with x402 inside the task (th…
Repeat demand — Is demand in my x402 category coming back? One signed number: 30-day repeat calls in a Bazaar category in the newest complete weekly snapshot (listings whose calls are at least twice their payers, so one-call-per-payer sweeps are left out) against the week before, with the repeat-use listings behind it and the category's share of all repeat calls. Unchanged answers asked with their ETag are a free 304. Price: $0.002 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A ta…
Proof value at your price — What is a proof worth at my x402 price? One signed number: the premium buyer-agent models gave a cue (a passed certification, an attested sample, pay on delivery, signed receipts, a pledge, the data-not-instructions declaration, or a fake payer count, urgency or an authority claim), in dollars at your price, with its 95% range and whether it's beyond chance, from the newest readable price-of-proof run, and only near the listing prices that run tested. Price: $0.001 in USDC per task, paid with x…
Payer mix — Who pays this x402 address, in bands? One signed fact for a seller's pay-to on Base: the share of its payers, and of its revenue, in the last 7 days that looks like sweeps or graders, and the share that came back, each as a band (under 10%, 10 to 25%, 25 to 50%, 50 to 75%, over 75%). Sweeps are checked on a random sample of one-visit payers when there are many, with the range in band edges. The full payer list is the payers tool. Asked again the same UTC day with its ETag, it's a free 304. Pric…
MCP server standing — Has this MCP server changed since my agent approved it? One signed fact from Agoranome's newest read of a server with a public report card: its grade and score, confirmed stop findings (instructions aimed at the agent, hidden characters, exfiltration links, credential requests), sign-in, the tools it lists and a digest of what a model reads of them (descriptions, parameters and the read-only and destructive hints). Unchanged answers asked with their ETag are a free 304, even after a newer read.…
Category brief — A research brief on one x402 category, $0.50 a section: demand (repeat calls week by week, sweeps left out), prices (p10, median and p90 by week, price bands, GET against POST), survival (new listings still listed one to four weeks on), rivals (the listings with the most payers) and proof (what each Fair Offer proof is worth at the median price). Markdown, every table also as JSON. The table of contents is free at /contents. Price: $0.50 in USDC per task, paid with x402 inside the task (the a2a…
Launch brief — Should I sell this x402 API at this price? A launch brief for a category, a price and optionally GET or POST: the gap (repeat demand against the strong sellers there), the price (its percentile and the nearest listings by price), the odds (survival of new listings like it), the rivals priced near it, and what each proof is worth at that price. Markdown, every table also as JSON; the contents are free. Price: $1.00 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task…
Address brief — Where does this x402 pay-to address sit? An address brief on its listings in this week's Bazaar (category, price, payers and calls, the price's percentile in its category, repeat use, Fair Offer block) and the categories it sells in (repeat demand this week against last, and the address's share). Markdown, every table also as JSON; the contents are free. Price: $0.25 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Agoranome Monthly — Agoranome Monthly for agents, $1 a section: one section of a published edition (seller survival, buyer depth, openings, the Fair Offer index, prices, what moves buyer agents, adoption, the agent registry), in Markdown with its tables as JSON, the same numbers as the edition. The first edition is out on 1 December 2026; each edition's contents are free. Price: $1.00 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that fails isn't charged.
Weekly x402 insights, by the page — One page of the weekly x402 demand insights report for $0.05, where the whole report is $0.25: repeat demand by category, demand gaps, movers, the price index with the listings that changed price, strong listings with weak descriptions, or GET against POST. Every metric of that page as JSON with Markdown, and its cited sources, for the latest or any archived week. The contents are free at /contents. Price: $0.05 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task t…
Row set, up to 5 rows — Up to 5 rows of an x402 market table for $0.001, $0.0002 a row: listing history (each Bazaar listing's category, method, latest price, first and last week seen, weeks listed and price changes) or survival cohorts (each week's new listings by category and how many were still listed one to four weeks on). Filter by category, page with offset, JSON or CSV. Row counts are free at /v1/rows/contents. Price: $0.001 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that …
Row set, up to 50 rows — Up to 50 rows of an x402 market table for $0.01, $0.0002 a row: listing history (each Bazaar listing's category, method, latest price, first and last week seen, weeks listed and price changes) or survival cohorts (each week's new listings by category and how many were still listed one to four weeks on). Filter by category, page with offset, JSON or CSV. Row counts are free at /v1/rows/contents. Price: $0.01 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that f…
Row set, up to 500 rows — Up to 500 rows of an x402 market table for $0.10, $0.0002 a row: listing history (each Bazaar listing's category, method, latest price, first and last week seen, weeks listed and price changes) or survival cohorts (each week's new listings by category and how many were still listed one to four weeks on). Filter by category, page with offset, JSON or CSV. Row counts are free at /v1/rows/contents. Price: $0.10 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task that …
Row set, up to 5,000 rows — Up to 5,000 rows of an x402 market table for $1.00, $0.0002 a row: listing history (each Bazaar listing's category, method, latest price, first and last week seen, weeks listed and price changes) or survival cohorts (each week's new listings by category and how many were still listed one to four weeks on). Filter by category, page with offset, JSON or CSV. Row counts are free at /v1/rows/contents. Price: $1.00 in USDC per task, paid with x402 inside the task (the a2a-x402 extension). A task tha…
Rank sample (free) — Free: the top three Bazaar results a buyer agent would see for a task, and your rank if you pass resource. The paid rank_check adds the signals where you trail the listings ahead of you.
Fair Offer check (free) — Free: check any x402 offer's Fair Offer block from outside, without paying. Each of the seven Fair Offer rules comes back verified, declared, contradicted or not claimed. Pass accept_proof (e.g. "sample=attested; price<=listing") to learn whether the offer meets a buyer's requirements.
Buyer policy check (free) — Free: would a buyer's policy pay this x402 offer? Applies Agoranome's open buyer policy (a price cap, the listing price, no instructions in the listing, and a proof tier: any, sampled or delivered) and returns allowed or refused with the reasons. Nothing is paid or signed.
Agent payments weekly (free) — Free: Agoranome Weekly's edition for a week (the newest if week is left out): real demand on Base (payments into the busiest Bazaar sellers with catalog sweeps and self-payments taken out), the Bazaar's sellers, new sellers, price index and Fair Offer share, and x402 SDK downloads, with the method version and how to cite it. CC BY 4.0.
Registered agent card (free) — Free: check an ERC-8004 agent on Base from outside, by its id in the Identity Registry: whether its registration file is valid and points back to it, whether its https endpoints answer and their domains list it, whether its x402 offer or A2A agent card passes the lint, and how concentrated its Reputation Registry feedback is. Nothing is paid or written.