x402 merchant

agent402.tools

Developer tools API on Base, Arbitrum, Avalanche, Celo, Monad, Optimism, Polygon and Sei, paid per request with x402.

Endpoints4,845
Price per requestfrom $0.001
Outside payers · 7dn/a
Answer 4020 of 8

Overview

as of 2026-10-06

Seller wallet: 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Chains: BaseArbitrumAvalancheCeloMonadOptimismPolygonSei
Hosts: agent402.tools
Categories: Developer tools1,088Market data872Onchain data704Other577AI models416Web data296Media272Identity240Search144Agents124Security96Commerce16
First seen: 2026-10-05 · last seen 2026-10-06

What we observed

Payments unknownNo 402 answer2026-09-19Not claimed

See the readings

Endpoints

4,845 registered

https://agent402.tools/api/dmarc-check
Fetch and validate a domain's DMARC policy at _dmarc.<domain> (RFC 7489). Surfaces the enforcement policy (none/quarantine/reject), reporting addresses, alignment modes, and common misconfigs (no rua, p=none stuck for m…
PolygonIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
AvalancheIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
CeloIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
OptimismIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
SeiIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
MonadIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
ArbitrumIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…
PolygonIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
ArbitrumIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
PolygonIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
MonadIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
AvalancheIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
SeiIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
OptimismIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-lookup
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
CeloIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
AvalancheIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
SeiIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
CeloIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
OptimismIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
MonadIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
ArbitrumIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/dns-propagation
Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.
PolygonIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
CeloOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-adverse-events
Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count - a fast read on a drug's real-world safety signal. Live FDA data, no key.
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
SeiAI models
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
CeloAI models
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
OptimismAI models
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
PolygonAI models
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
ArbitrumAI models
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
MonadAI models
n/a/ request
2026-09-30
https://agent402.tools/api/drug-recalls
Search FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key.
AvalancheAI models
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
AvalancheDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
PolygonDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/earthquakes
Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.
CeloOther
n/a/ request
2026-09-30

Evidence

as of 2026-10-06

Answers HTTP 402

0 of 8

0 of 8 probed endpoints answered HTTP 402 with a parseable payment payload

checked 2026-09-19

x402-style payments, last 7 days (Base)

unknown

unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan)

window ended 2026-10-06

By chain

Chain	Seller wallet	Endpoints	Answers 402	x402-style payments
Base	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	603	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan)
Arbitrum	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet
Avalanche	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet
Celo	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet
Monad	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet
Optimism	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet
Polygon	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet
Sei	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	606	0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19	unknown. not measured on this chain yet

One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

Pricing

Lowest

$0.001

per request, as registeredas of 2026-10-06

Highest

$2.00

per request, as registeredas of 2026-10-06

The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.

Claim this merchant

Sign a message from the payout address 0xabf4fa…e2a9d0 to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.

Data CC-BY-4.0, attribution: data by satohub.ai. Data: x402-list.com (CC BY 4.0). Data as of 2026-10-06. Appearing here is not an endorsement. Check an endpoint with the doctor.