Dated x402 buyer evidence
x402 tools ranked by observed buyer activity.
Compare paid agent endpoints by concrete job, public 30-day calls, endpoint payer signals, price, and network. Ontario ranks what the source observed, then sends agents through free verification before payment.
50,968source-listed endpoints
26.77%reported at least one call
302,914source-reported 30-day calls
10concrete agent-job rankings
Ranking boundary: activity is not safety, quality, reliability, endorsement, independent demand, or verified revenue. A provider may have activity outside this catalog. Always inspect the endpoint, payment challenge, policy fit, and report freshness before spending.
Compare by agent job
Choose the outcome your agent needs
Each task group is matched deterministically from public descriptions, URLs, names, and tags. The order uses endpoint payer signal first and call count second.
Blockchain dataInspect transactions, blocks, contracts, balances, gas, and on-chain state.
270matched services with activity
23,298reported calls
12,005endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | api.onesource.ioENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPCGET https://api.onesource.io/api/chain/ens/:input |
0.005 USDCeip155:8453 |
478 | 416 | Source row |
| #2 | api.onesource.ioTransaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transactionGET https://api.onesource.io/api/chain/receipt/:hash |
0.005 USDCeip155:8453 |
426 | 412 | Source row |
| #3 | api.onesource.ioEstimate the gas a transaction will consume via eth_estimateGas before signing itPOST https://api.onesource.io/api/chain/estimate-gas |
0.004 USDCeip155:8453 |
410 | 410 | Source row |
| #4 | api.onesource.ioLatest Ethereum block height - current chain tip via eth_blockNumberGET https://api.onesource.io/api/chain/block-number |
0.001 USDCeip155:8453 |
536 | 405 | Source row |
| #5 | api.onesource.ioCheck if an Ethereum address is a contract via eth_getCode - returns deployed bytecodeGET https://api.onesource.io/api/chain/code/:address |
0.003 USDCeip155:8453 |
399 | 395 | Source row |
| #6 | api.onesource.ioSimulate a read-only Ethereum contract call via eth_call - no transaction sentPOST https://api.onesource.io/api/chain/call |
0.005 USDCeip155:8453 |
397 | 392 | Source row |
| #7 | api.onesource.ioNext transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sentGET https://api.onesource.io/api/chain/nonce/:address |
0.003 USDCeip155:8453 |
395 | 390 | Source row |
| #8 | api.onesource.ioEthereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)GET https://api.onesource.io/api/chain/network-info |
0.001 USDCeip155:8453 |
472 | 389 | Source row |
Market dataRetrieve financial prices, rates, yields, market feeds, and trading context.
156matched services with activity
8,722reported calls
2,374endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | tick.hugen.tokyoGet real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. 62-88% tighter spreads than any single source. Includes quality metadata (fr...GET https://tick.hugen.tokyo/tick/latest |
0.005 USDCeip155:8453 |
228 | 117 | Source row |
| #2 | api.anchor-x402.comUSD price for any major token by symbol or chain+contract — $0.001 USDCGET https://api.anchor-x402.com/v1/price/token |
0.001 USDCeip155:8453 |
112 | 73 | Source row |
| #3 | Otto AIHyperliquid perpetuals market data: live mark/oracle price, funding rate, open interest, max leverage, and size specs for any tradable asset.GET https://x402.ottoai.services/hyperliquid-market |
0.001 USDCeip155:8453 |
1,462 | 63 | Source row |
| #4 | api.x402node.devReal-time forex / exchange rates from the European Central Bank (via Frankfurter). Pass from=USD and to=EUR (or batch to=EUR,GBP,JPY,CNY). Returns rates, inverse rates and last-upd...GET https://api.x402node.dev/finance/forex |
0.008 USDCeip155:8453 |
126 | 60 | Source row |
| #5 | Otto AITradFi macro intelligence: indices, VIX, DXY, treasury yields, commodities, and individual stock quotes with moving average context.GET https://x402.ottoai.services/tradfi-data |
0.003 USDCeip155:8453 |
1,427 | 38 | Source row |
| #6 | api.tickersfeed.netEarnings history for any US stock — last 4 quarters with actual vs estimate EPS, surprise, and surprise percent. Covers NYSE, NASDAQ, AMEX. $0.003 USDC per call.GET https://api.tickersfeed.net/stock/MSFT/earnings |
0.003 USDCeip155:8453 |
61 | 37 | Source row |
| #7 | Otto AIDeFi yield farming markets with live APYs across Aave V3 and Morpho on Base, Ethereum, and other major chains. Find the best stablecoin yield (USDC) and ETH yield for idle capital:...GET https://x402.ottoai.services/yield-markets |
0.001 USDCeip155:8453 |
761 | 34 | Source row |
| #8 | proxy.suverse.ioCurrent FX rates for up to 30 currency pairs in one call with last-update date. USD EUR GBP JPY CHF AUD CAD CNY plus EM currencies. AI agent cross-border calculator, forex arbitrag...POST https://proxy.suverse.io/v1/data/suverse-forex-rates |
0.05 USDCeip155:8453 |
60 | 34 | Source row |
AI inferenceTranslate, summarize, classify, embed, or generate model outputs.
143matched services with activity
13,611reported calls
1,634endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | api.interzoid.comDetect the language of input text and translate it to any specified target language. AI-powered translation supporting numerous world languages.GET https://api.interzoid.com/translatetoany |
0.01 USDCeip155:8453 |
253 | 102 | Source row |
| #2 | api.interzoid.comDetect the language of input text and translate it to English. Supports numerous world languages with AI-powered translation.GET https://api.interzoid.com/translatetoenglish |
0.01 USDCeip155:8453 |
118 | 57 | Source row |
| #3 | 2s.ioLook up or search NAICS 2022 industry classification codes (US Census Bureau, public domain). Pass `code` for an exact NAICS code — 2–6 digits or a combined sector like 31-33 — and...GET https://2s.io/api/business/naics |
0.001 USDCeip155:8453 |
100 | 57 | Source row |
| #4 | BlockRun.AIQuery Polymarket markets with filtering, sorting, and paginationGET https://blockrun.ai/api/v1/pm/polymarket/markets |
0.0095 USDCeip155:8453 |
1,775 | 42 | Source row |
| #5 | BlockRun.AIList Polymarket events with filtering and sortingGET https://blockrun.ai/api/v1/pm/polymarket/events |
0.0095 USDCeip155:8453 |
241 | 27 | Source row |
| #6 | BlockRun.AINeural and keyword web search. Optional category filter: company, research paper, news, pdf, github, tweet, personal site, linkedin profile, financial report.POST https://blockrun.ai/api/v1/exa/search |
0.012 USDCeip155:8453 |
491 | 26 | Source row |
| #7 | BlockRun.AIQuery Kalshi markets with filtering, sorting, and paginationGET https://blockrun.ai/api/v1/pm/kalshi/markets |
0.0095 USDCeip155:8453 |
1,201 | 23 | Source row |
| #8 | BlockRun.AIList crypto up/down prediction marketsGET https://blockrun.ai/api/v1/pm/polymarket/crypto-updown |
0.0095 USDCeip155:8453 |
258 | 20 | Source row |
Agent emailCreate, search, read, and send email or manage an agent mailbox.
22matched services with activity
1,695reported calls
1,066endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | mail.cusethejuice.comCuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain a...POST https://mail.cusethejuice.com/admin-api/machine/mailboxes/:email/search |
0.01 USDCeip155:8453 |
881 | 873 | Source row |
| #2 | mail.cusethejuice.comCuseTheJuice agent mailbox on Base USDC: create accounts, list and read mail, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain ...POST https://mail.cusethejuice.com/admin-api/machine/mailboxes/:email/messages/:message_id |
0.01 USDCeip155:8453 |
692 | 138 | Source row |
| #3 | api.qonoro.aiValidates email deliverability: syntax check, MX record lookup, and SMTP server reachability. Returns risk score and quality rating. Deterministic, sub-second. x402-native.POST https://api.qonoro.ai/v1/email/validate |
0.005 USDCeip155:8453 |
6 | 5 | Source row |
| #4 | mail.cusethejuice.comCuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain a...POST https://mail.cusethejuice.com/admin-api/machine/mailboxes/:email/messages |
0.01 USDCeip155:8453 |
29 | 3 | Source row |
| #5 | mail.cusethejuice.comCuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain a...POST https://mail.cusethejuice.com/admin-api/machine/mailboxes/:email/quota |
0.01 USDCeip155:8453 |
5 | 3 | Source row |
| #6 | 2s.ioValidate an email address and return structured signals: RFC syntax validity (isSyntaxValid + reason if not), the normalized address with split local/domain, and boolean flags for ...GET https://2s.io/api/email/validate |
0.001 USDCeip155:8453 |
4 | 3 | Source row |
| #7 | deliver.hergertsynthora.comAudit a domain's email deliverability and sender reputation. Checks SPF, DKIM selectors, DMARC policy strength (reject/quarantine/none), BIMI, MX and PTR records, returning a spam ...POST https://deliver.hergertsynthora.com/service |
0.001 USDCeip155:8453 |
3 | 3 | Source row |
| #8 | mail.cusethejuice.comCuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain a...POST https://mail.cusethejuice.com/admin-api/machine/mailboxes/:email/messages/:message_id/attachments |
0.01 USDCeip155:8453 |
5 | 2 | Source row |
TravelSearch flights, hotels, airports, routes, and travel availability.
70matched services with activity
2,144reported calls
722endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | 2s.ioAirports within a radius of a coordinate, sorted by distance. Query: lat (-90..90), lon (-180..180), radius_km (1-2000, default 200), limit (1-100, default 20), type (optional: lar...GET https://2s.io/api/airport/near |
0.001 USDCeip155:8453 |
130 | 68 | Source row |
| #2 | ApifyApify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and automation. Use these tools, called Actors, to extract structured data f...GET https://agi.apify.com/protocols/x402/prepaid-tokens |
1 USDCeip155:8453 |
88 | 36 | Source row |
| #3 | stabletravel.devSearch Google Flights for flight offers. Returns best flights, other flights, price insights, and airport info.GET https://stabletravel.dev/api/google-flights/search |
0.02 USDCeip155:8453 |
473 | 32 | Source row |
| #4 | api.x402node.devUS airport status from FAA: all airports currently with closures, ground stops, ground delays or arrival delays, with reasons and times. Official FAA NAS status data. 全美机场状态（FAA官方）...GET https://api.x402node.dev/aviation/airport-status |
0.005 USDCeip155:8453 |
40 | 19 | Source row |
| #5 | proxy.suverse.ioFree weather data from Open-Meteo. Current temperature, conditions, wind for any location (default NYC, customizable via query params). No upstream API key. AI agent travel context...GET https://proxy.suverse.io/v1/data/weather-forecast-nyc |
0.05 USDCeip155:8453 |
20 | 19 | Source row |
| #6 | stabletravel.devSearch flight offers by query parametersGET https://stabletravel.dev/api/flights/search |
0.054 USDCeip155:8453 |
68 | 12 | Source row |
| #7 | AmadeusSearch flight offers (GET for simple, POST for advanced multi-city).GET, POST https://stabletravel.dev/api/flights/search |
0.05 USDCBase |
68 | 12 | Source row |
| #8 | agents.dyoeway.orgCurrent conditions + 3-day forecast for any city — for travel & planning agents. Input: ?city=AtlantaGET https://agents.dyoeway.org/weather |
0.01 USDCeip155:8453 |
11 | 11 | Source row |
Data enrichmentResolve companies, people, domains, locations, and structured lookup data.
83matched services with activity
13,843reported calls
594endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | stableenrich.devPDL Person Enrich — career history, emails, phone. Requires one of: `email`, `profile` (LinkedIn URL), or `first_name` + `last_name` + (`company_name` OR `company_domain`). `{ firs...POST https://stableenrich.dev/api/pdl/people-enrich |
0.28 USDCeip155:8453 |
1,783 | 75 | Source row |
| #2 | 2s.ioLook up or search the global LEI (Legal Entity Identifier) registry — the authoritative ISO 17442 directory of ~2.6M legal entities worldwide. Pass `lei` for an exact 20-character ...GET https://2s.io/api/business/lei |
0.0012 USDCeip155:8453 |
112 | 55 | Source row |
| #3 | stableenrich.devClado Contacts Enrichment - Enrich contact info from LinkedIn URL, email, or phonePOST https://stableenrich.dev/api/clado/contacts-enrich |
0.2 USDCeip155:8453 |
476 | 44 | Source row |
| #4 | CladoEnrich contact information from LinkedIn URL, email, or phone number. Must provide exactly one of: linkedin_url, email, or phone.POST https://stableenrich.dev/api/clado/contacts-enrich |
0.20 USDCBase |
476 | 44 | Source row |
| #5 | api.linkedpanda.comLinkedIn profile search results pagePOST https://api.linkedpanda.com/agent/v1/profiles/search |
0.3 USDCeip155:8453 |
316 | 23 | Source row |
| #6 | api.linkedpanda.comLinkedIn job search results pagePOST https://api.linkedpanda.com/agent/v1/jobs/search |
0.05 USDCeip155:8453 |
521 | 17 | Source row |
| #7 | api.x402node.devPublic professional profile or company page fetch — clean content via managed retrieval with residential routing and JS rendering. For B2B research, lead enrichment and recruiting ...GET https://api.x402node.dev/web/linkedin |
0.02 USDCeip155:8453 |
36 | 16 | Source row |
| #8 | stable-deepline.devEnrich Company — merged 30+ field profile from Apollo, Crustdata, and PeopleDataLabs: revenue, headcount, industry, funding, valuation, tech stack, social profiles, SIC/NAICS codes...POST https://stable-deepline.dev/api/company/enrich |
0.1 USDCeip155:8453 |
103 | 13 | Source row |
Validation and risk checksValidate identifiers, code, documents, payment metadata, and risk signals.
106matched services with activity
3,644reported calls
509endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | api.x402node.devHeuristic honeypot and risk check for an ERC20 token via on-chain eth_call - detects active owner control and transfer restrictions that can trap buyers, on Ethereum and Base. hone...GET https://api.x402node.dev/chain/honeypot |
0.01 USDCeip155:8453 |
36 | 16 | Source row |
| #2 | api.invoket.comFull counterparty due-diligence on a French company in one paid call, by SIREN: Sirene identity and status, dated BODACC insolvency/deregistration/sale announcements, live EU VAT v...GET https://api.invoket.com/company/report |
0.01 USDCeip155:8453 |
8 | 8 | Source row |
| #3 | ot-intel-api.onrender.comICS threat actor profile. Pass ?name=SANDWORM. Returns MITRE ATT&CK ICS techniques, known malware, attribution, physical impact, targeted sectors, and OT detection recommendations....GET https://ot-intel-api.onrender.com/ot/actor |
0.03 USDCeip155:8453 |
13 | 7 | Source row |
| #4 | ot-intel-api.onrender.comICS malware encyclopedia. Pass ?name=PIPEDREAM. Returns capabilities, targeted OT protocols, attributed actor, affected vendors, detection signatures, and MITRE ATT&CK ICS techniqu...GET https://ot-intel-api.onrender.com/ot/malware |
0.02 USDCeip155:8453 |
12 | 7 | Source row |
| #5 | telesint-api.onrender.comMalware family intelligence from Telegram: new sample drops, behavior analysis, loader/stealer/RAT/backdoor writeups. Filters: severity, min_confidence, since, tag(stealer|loader|r...GET https://telesint-api.onrender.com/malware |
0.02 USDCeip155:8453 |
13 | 6 | Source row |
| #6 | ot-intel-api.onrender.comICS detection artifact retrieval. Pass ?target=PIPEDREAM or ?target=SANDWORM&format=sigma. Returns YARA/Sigma rules for the target malware or actor, sourced from public corpus (Flo...GET https://ot-intel-api.onrender.com/ot/detection |
0.05 USDCeip155:8453 |
10 | 6 | Source row |
| #7 | ot-intel-api.onrender.comSynthesised Markdown threat actor report for ICS/OT. Pass ?actor=CHERNOVITE§or=energy. Fans out to actor, campaign, malware, advisory, detection primitives internally (no extra...GET https://ot-intel-api.onrender.com/ot/report |
0.25 USDCeip155:8453 |
9 | 6 | Source row |
| #8 | ot-intel-api.onrender.comPublication-ready CTI article ~700 words. Pass ?actor=CHERNOVITE or ?cve=CVE-XXXX-XXXX. Fans out to actor/cve + campaign + malware + advisory. DeepSeek writes journalist-style: hea...GET https://ot-intel-api.onrender.com/ot/article |
0.45 USDCeip155:8453 |
7 | 6 | Source row |
Web searchSearch the public web, news, research, or indexed documents.
52matched services with activity
3,299reported calls
417endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | stableenrich.devFirecrawl Search - Search the webPOST https://stableenrich.dev/api/firecrawl/search |
0.0252 USDCeip155:8453 |
1,013 | 71 | Source row |
| #2 | BlockRun.AINeural and keyword web search. Optional category filter: company, research paper, news, pdf, github, tweet, personal site, linkedin profile, financial report.POST https://blockrun.ai/api/v1/exa/search |
0.012 USDCeip155:8453 |
491 | 26 | Source row |
| #3 | vaaya.aiExa — semantic web search via our API key. numResults up to 100. For people/lead discovery set category:"people" with an open ICP query.POST https://vaaya.ai/api/run/exa/search |
0.01 USDCeip155:8453 |
372 | 20 | Source row |
| #4 | BlockRun.AIGet an AI-generated answer to a question grounded in live web search results.POST https://blockrun.ai/api/v1/exa/answer |
0.012 USDCeip155:8453 |
76 | 17 | Source row |
| #5 | Otto AIAI-filtered crypto news and Twitter search for non-token topics (airdrops, DeFi trends, etc). Max 2 words.GET https://x402.ottoai.services/filtered-news |
0.001 USDCeip155:8453 |
44 | 13 | Source row |
| #6 | search.gedx402.comTavily web search — POST { query, max_results?: 5 } on search.gedx402.com; ranked results via Tavily API. $0.042 USDC per request. AM-winning shape at /v1/search. Agent search: tav...POST https://search.gedx402.com/v1/search |
0.042 USDCeip155:8453 |
45 | 6 | Source row |
| #7 | api.zuluworksai.comStructured web search via Bing RSS (title, URL, description, pubDate).POST https://api.zuluworksai.com/exec/web-search |
0.01 USDCeip155:8453 |
6 | 6 | Source row |
| #8 | 2s.ioLive web search. Returns ranked results with title, URL, snippet description, site name, and page age — fresh information past any model training cutoff. Supports count (1-20), off...GET https://2s.io/api/search/web |
0.009 USDCeip155:8453 |
79 | 5 | Source row |
StorageUpload, retrieve, host, or inspect files and object storage.
9matched services with activity
441reported calls
361endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | api.onesource.ioNFT metadata, traits, and image URI for any ERC721 or ERC1155 token - fetched via eth_call with IPFS resolution (OneSource live Ethereum RPC)GET https://api.onesource.io/api/chain/nft-metadata |
0.008 USDCeip155:8453 |
343 | 342 | Source row |
| #2 | api.x402node.devBase58 encoder/decoder, Bitcoin, Solana, IPFS CID, Flickr, no ambiguous chars, address encoding, wallet address format. Used by BTC, Solana, IPFS.GET https://api.x402node.dev/encode/base58 |
0.0022 USDCeip155:8453 |
6 | 6 | Source row |
| #3 | gateway.offchain.wtfIPFS content retrieval with x402 paymentGET https://gateway.offchain.wtf/ipfs/bafybeigdyrzt5sfp7udm7hu76uh7y26nf3efuylqabf3oclgtqy55fbzdi |
0.01 USDCeip155:8453 |
6 | 3 | Source row |
| #4 | regimeshift.xyzAgent-SOFR — decentralized USD short-rate benchmark for AI agents. Weighted-median of 7 sources + variance + regime premiums. BNS-calibrated 6-mode classifier on 444k ETH/USDC 5-mi...GET https://regimeshift.xyz/api/v1/rate/sofr/usd |
0.001 USDCeip155:8453 |
47 | 2 | Source row |
| #5 | agent402.toolsBase58 encode or decode text (Bitcoin/IPFS alphabet). mode: encode (default) or decode.POST https://agent402.tools/api/base58 |
0.001 USDCeip155:8453 |
4 | 2 | Source row |
| #6 | kleros-ipfs-gateway.fly.devPin a file to IPFSGET https://kleros-ipfs-gateway.fly.dev/upload-to-ipfs |
0.01 USDCeip155:8453 |
26 | 1 | Source row |
| #7 | gateway.offchain.wtfIPFS content retrieval with x402 paymentGET https://gateway.offchain.wtf/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG |
0.01 USDCeip155:8453 |
3 | 1 | Source row |
| #8 | gateway.offchain.wtfIPFS content retrieval with x402 paymentGET https://gateway.offchain.wtf/ipfs/bafybeid6jupqkrukju6jbsdw6iueinbyh2as2z3235acqqvxoy5nlbciyq |
0.01 USDCeip155:8453 |
3 | 1 | Source row |
Media processingTranscribe, synthesize, inspect, or transform image, audio, and video assets.
44matched services with activity
880reported calls
259endpoint payer-count sum
| Rank | Service and agent job | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | api.cn402.comChinese pinyin, hanzi to pinyin, Mandarin romanization, 拼音转换, Chinese phonetic, Hanyu Pinyin with tones, 普通话拼音, Chinese to Latin, Mandarin transliteration, tone marks numbers. Conv...GET https://api.cn402.com/hanzi/pinyin |
0.008 USDCeip155:8453 |
42 | 27 | Source row |
| #2 | api.invoket.comBefore your agent pays an IBAN taken from OCR or invoice ingestion: fix a broken or garbled IBAN — recompute check digits, recover unreadable characters (?) and rank candidates by ...GET https://api.invoket.com/iban/repair |
0.01 USDCeip155:8453 |
24 | 9 | Source row |
| #3 | api.invoket.comBefore a payment run over OCR or invoice data: fix up to 500 broken or garbled IBANs in one call — recompute check digits, recover unreadable characters and rank candidates by know...POST https://api.invoket.com/iban/repair/batch |
0.015 USDCeip155:8453 |
19 | 8 | Source row |
| #4 | api.invoket.comRead any EU structured e-invoice in one call: post a Factur-X PDF, CII or UBL XML and get faithful structured data - parties with SIREN/VAT identifiers, line items, VAT breakdown, ...POST https://api.invoket.com/invoice/read |
0.01 USDCeip155:8453 |
8 | 7 | Source row |
| #5 | cnvrt.ingTranscribe audio/video from URLs using OpenAI Whisper. Payment via USDC on base.GET https://cnvrt.ing/api/transcribe |
0.025 USDCeip155:8453 |
9 | 6 | Source row |
| #6 | api.strale.ioOCR on any image via Claude vision. Works on screenshots, photos of documents, handwritten notes. Returns text with confidence.GET https://api.strale.io/x402/image-to-text |
0.054001 USDCeip155:8453 |
142 | 4 | Source row |
| #7 | proxy.suverse.ioTop 7 trending crypto by user searches on CoinGecko in the last 24h. Sentiment/hype signal showing what is capturing retail attention before price moves. Name, symbol, market cap r...POST https://proxy.suverse.io/v1/data/suverse-crypto-trending |
0.05 USDCeip155:8453 |
7 | 4 | Source row |
| #8 | agent402.toolsTranscribe audio to text using OpenAI (gpt-4o-mini-transcribe). Provide a URL to an audio file (mp3, wav, m4a, etc.) and get back the transcript. No API key needed; pay per call vi...POST https://agent402.tools/api/transcribe |
0.03 USDCeip155:8453 |
164 | 3 | Source row |
Overall activity leaders
Named endpoints with the largest observed payer signals
This table is intentionally not a “safest” or “best quality” list. It shows which endpoint rows had the largest public activity signal in the dated source snapshot.
| Rank | Service and endpoint | Price | 30-day calls | Payer signal | Evidence |
|---|---|---|---|---|---|
| #1 | mail.cusethejuice.comCuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain a...POST https://mail.cusethejuice.com/admin-api/machine/mailboxes/:email/search |
0.01 USDCeip155:8453 |
881 | 873 | Source row |
| #2 | api.onesource.ioENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPCGET https://api.onesource.io/api/chain/ens/:input |
0.005 USDCeip155:8453 |
478 | 416 | Source row |
| #3 | api.onesource.ioTransaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transactionGET https://api.onesource.io/api/chain/receipt/:hash |
0.005 USDCeip155:8453 |
426 | 412 | Source row |
| #4 | api.onesource.ioEstimate the gas a transaction will consume via eth_estimateGas before signing itPOST https://api.onesource.io/api/chain/estimate-gas |
0.004 USDCeip155:8453 |
410 | 410 | Source row |
| #5 | api.onesource.ioLatest Ethereum block height - current chain tip via eth_blockNumberGET https://api.onesource.io/api/chain/block-number |
0.001 USDCeip155:8453 |
536 | 405 | Source row |
| #6 | api.onesource.ioCheck if an Ethereum address is a contract via eth_getCode - returns deployed bytecodeGET https://api.onesource.io/api/chain/code/:address |
0.003 USDCeip155:8453 |
399 | 395 | Source row |
| #7 | api.onesource.ioSimulate a read-only Ethereum contract call via eth_call - no transaction sentPOST https://api.onesource.io/api/chain/call |
0.005 USDCeip155:8453 |
397 | 392 | Source row |
| #8 | api.onesource.ioNext transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sentGET https://api.onesource.io/api/chain/nonce/:address |
0.003 USDCeip155:8453 |
395 | 390 | Source row |
| #9 | api.onesource.ioEthereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)GET https://api.onesource.io/api/chain/network-info |
0.001 USDCeip155:8453 |
472 | 389 | Source row |
| #10 | api.onesource.ioContract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface supportGET https://api.onesource.io/api/chain/contract/:address |
0.005 USDCeip155:8453 |
398 | 384 | Source row |
Agent decision
Use activity to shortlist. Use evidence to decide.
A high activity signal can justify inspection, but it cannot authorize payment. Run Ontario’s free verifier, inspect the HTTP 402 challenge, check price, asset, network, task fit, and freshness, then apply the agent’s spend policy.
Snapshot:
2026-07-16T14:57:32Z
JSON: /api/intelligence/x402-tools-by-buyer-activity.json
Well-known: /.well-known/x402-buyer-activity.json
Source: Agentic Market public services API