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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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Social & people
338 results
PubrioSocial & peopleReturns the stored company record by domain, LinkedIn URL or Pubrio id: firmographics, locations, industry, technologies, social profiles and identifiers, including the domain_search_id other endpoints take. Each call is 1 credit.
Baseagents.pubrio.comfrom $0.0126 endpoints- Gglim.shSocial & people
Search Reddit posts
SolanaBaseEVM chain 143surf.cascade.fyifrom $0.0019 endpoints - Gglim.shSocial & people
Search users by keyword
SolanaBaseEVM chain 143twitter.surf.cascade.fyifrom $0.0016 endpoints - Aagentworld.meSocial & people
AgentWorld Agent Leaderboard - top AI agents ranked by USDC wealth or reputation score. Includes job role, city, mood, personality archetype. Updated every 3 minutes by the tick engine. Filter by city or job.
BaseEthereumArbitrum+3agentworld.mefrom $0.0012 endpoints - Wweb-searchSocial & people
Free-text web search for AI agents: ranked title/url/snippet results fused across multiple engines (Brave, Google, DuckDuckGo, Mojeek, Startpage, Yahoo), with freshness filters (past day/week/month/year), region/locale and SafeSearch. One call for grounded, up-to-date web results — no keys, no scraping setup.
Basewebtools402.176-109-107-191.sslip.iofrom $0.00112 endpoints - WWebsterBerry SynapticSocial & people
Screen a person or business name against the US Treasury OFAC SDN sanctions list (including aliases), and optionally confirm an EIN against IRS Publication 78 nonprofit data.
Basesynaptic.websterberrymarketing.comfrom $0.00510 endpoints - DDNS A Record LookupSocial & people
DNS A record lookup — resolve any hostname or domain to its IPv4 addresses, returned as a clean JSON list. For host resolution, connectivity and uptime checks, IP-reputation enrichment and infrastructure mapping.
BasePolygonArbitrum+1dns.use.x402atlas.comfrom $0.0057 endpoints - GgankdatSocial & people
UK procurement notices. Public procurement notices from the official Find a Tender OCDS feed, flattened to one queryable schema. Blind Mode: no contact or personal data. One call returns one page of matching records as JSON (25 by default, per_page up to 100) with the total count and the last refresh time; the query parameters filter the records.
Basegankdat.comfrom $0.00516 endpoints
x402 Agent HubSocial & peopleStatus of any transaction on 7 EVM chains: pending / success / reverted, confirmations, block time, from/to, value and the all-in fee (including the OP-stack L1 data fee on Base and Optimism). Use it to confirm a payment or deployment landed. You only pay for successful reads: invalid input, not-found and upstream errors cancel settlement.
Basex402-agent-hub.x402-agent-hub.workers.devfrom $0.00225 endpoints
RobinXSocial & peopleProven X caller-lift leaderboard
Baseapi.robinx.iofrom $0.019 endpoints- Cconvrgent.aiSocial & people
Create a new persistent human profile in the vault. Agent-namespaced by wallet address. Accepts initial identity, text samples, observations, and birth data.
BaseSolanaconvrgent.aifrom $0.012 endpoints
InsumerAPISocial & peopleSigned attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, account code (plain key, EIP-7702 delegation, or contract), and agent standing (ERC-8004 registration, ERC-7710 delegation validity). A verifiable boolean, never raw balances or code. Up to 10 conditions per pay-pe
BasePolygonArbitrum+2api.insumermodel.comfrom $0.053 endpoints
Postcode ContextSocial & peopleGET /api/v1/postcode/:postcode - Single Postcode Socio-Economic Profile (ONS Census 2021 demographics, IMD deciles, Land Registry prices, GBP/sqm, EPC ratings, broadband speeds)
Baseapi.postcodecontext.ukfrom $0.0054 endpoints- QQonoro Email ValidatorSocial & people
Validates email deliverability: syntax check, MX record lookup, and SMTP server reachability. Returns risk score and quality rating. Deterministic, sub-second. x402-native.
Baseapi.qonoro.aifrom $0.00521 endpoints - RResolve402Social & people
Hiring signals of a company: open jobs read from its public ATS board (Greenhouse, Lever, Ashby, SmartRecruiters, Recruitee, Personio, Workable, Teamtailor, Workday), summarized as buying signals (volume, last 30 days, functions hiring, seniority mix, leadership roles); each job carries its function and seniority (intern to c-level). From a domain, a French SIREN or a company name. Chain with /api
BaseSolanaresolve402.devfrom $0.00312 endpoints
how.isSocial & peoplePartner tier of the dns.pizza bot observatory: every network (ASN), named crawler, TLS (JA4) fingerprint and firewall rule seen in the last 7 days, refreshed hourly. The public tier is free at https://dns.pizza/bots.
Basehow.isfrom $0.00523 endpoints- Aapi.scrapebench.devSocial & people
Verify a California contractor licence by CSLB licence number or business name, returning licence status (normalised and as CSLB words it), classifications, issue and expiry dates, bond and workers' comp. Read live from the CSLB 'Check A License' registry; an unknown licence number is answered free.
Baseapi.scrapebench.devfrom $0.0422 endpoints - Ddatastand.devSocial & people
Cost-optimised endpoint selection: name a capability (web search, token safety, enrichment) and get the x402 endpoints that provide it ranked cheapest-first in USDC per call, with adoption stats. Refreshed daily from the Bazaar discovery index. The corpus is the most-used slice of the Bazaar, so read `price_floor_complete` and `corpus.cutoff` for whether the price floor you get is the Bazaar's or
Basedatastand.devfrom $0.00510 endpoints
LimitguardSocial & peopleSanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination.
BaseSolanaapi.limitguard.aifrom $0.00518 endpoints- VVIN DecoderSocial & people
Decode any 17-character VIN into the vehicle it describes: make, manufacturer, model, year, series, body class, drive type, engine, fuel, transmission and assembly plant. NHTSA returns 140 mostly-empty fields; this strips the blanks, promotes the ones that matter and reports whether the check digit validated.
Basex402-filings.datalayer.workers.devfrom $0.019 endpoints - DDYOE Trust CheckSocial & people
Check whether a website, business, or wallet is a scam before an agent trusts or pays it — fraud, phishing and rug-risk screening. Returns verdict (safe/caution/avoid), trust_score, domain age, red_flags. Input: ?target=domain
Baseagents.dyoeway.orgfrom $0.0121 endpoints - TTENNA Launch IntelligenceSocial & people
Latest Sealed BTC Forecast. Latest sealed five-minute LUMI, TENNA, and consensus forecast from TENNA Observatory, including English commentary, recent accuracy, and eligible live edge-node consensus. Reuses existing app.tenna.ai output with no extra AI call. Eligible external wallets may receive one zero-budget preview per UTC day; 0.01 USDC is the fallback rate because ACP cannot list a zero pric
Baseapp.tenna.aifrom $0.0111 endpoints - CChat completions APISocial & people
LLM inference API: OpenAI-compatible chat completions, send messages, get choices and usage. Cheap LLM inference for agents (Llama 3.1 8B), no key, no streaming.
Basedominion-data.x402-evm-math.workers.devfrom $0.00116 endpoints - 4402oracleSocial & people
Crypto price check: the current spot price of Bitcoin (BTC), Ethereum (ETH), Solana (SOL) or any token ticker in USD, cross-checked across five exchanges (Coinbase, Kraken, OKX, Binance, CoinGecko). Returns the median price, the spread between venues and a divergence flag, as a signed price oracle attestation your agent can cite. Use it before your agent trades, quotes, values a portfolio or settl
BasePolygonArbitrum402oracle.comfrom $0.025 endpoints
orchard-dataSocial & peopleOne-call market snapshot for a daily briefing or a pre-trade check: BTC/ETH/SOL spot with 24h change, the crypto fear & greed index, and SPY/QQQ/DIA/IWM quotes. Cheaper than the three parts bought separately. Each source reports its own status; if every source fails the call returns 503 and is not charged. JSON.
Baseorchard-data.letom1176.workers.devfrom $0.0018 endpoints- Hhirescrape.comSocial & people
TikTok profiles, posts, comments, fast-API feeds, search discovery.
Basehirescrape.comfrom $0.00222 endpoints - PParticle ProSocial & people
Rank publishers by political bias metric. Returns a paginated leaderboard ranking publishers by a chosen bias metric: most_left_leaning, most_right_leaning, most_political, most_diverse, most_monolithic, or most_analyzed. min_analyzed_podcasts
Baseapi.particle.profrom $0.0116 endpoints - Ssentedge.aiSocial & people
SentEdge Trust: which agents do third-party curators vouch for? Returns curator-endorsed picks as a discovery aid. Explicitly non-authoritative — endorsements affect visibility only and never touch an agent's confidence tier, so treat this as a lead, not a trust verdict. Free alternative: GET /v1/discover. Full API: https://sentedge.ai/trust/skill.md
BaseSolanasentedge.aifrom $0.00611 endpoints - PPatentPulseSocial & people
Trademark search / brand-name clearance / trademark availability check for any mark. Returns existing similar marks, USPTO/TESS status, likelihood-of-confusion analysis, filing strategy, domain-availability context, and opposition/enforcement risk for given goods/services. For IP and brand agents. Worldwide.
BaseSolanaPolygon+8patentpulse.theaslangroupllc.comfrom $0.058 endpoints - EEmail ValidateSocial & people
Validate an email address using syntax, MX, disposable-domain, role-account, and domain-risk checks. Returns structured validation data for agent workflows, signup hygiene, and lead-quality checks. Does not guarantee that an individual mailbox exists.
Baseagent-vending-production.up.railway.appfrom $0.00115 endpoints
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.