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/email-deliverability
End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.
CeloIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-deliverability
End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.
OptimismIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-deliverability
End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.
MonadIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-deliverability
End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.
AvalancheIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-deliverability
End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.
SeiIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
AvalancheIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
OptimismIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
ArbitrumIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
PolygonIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
MonadIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
SeiIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/email-validate
Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).
CeloIdentity
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
CeloAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
OptimismAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
SeiAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
AvalancheAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
MonadAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
ArbitrumAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed
Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.
PolygonAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
MonadAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
OptimismAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
ArbitrumAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
AvalancheAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
SeiAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
PolygonAI models
n/a/ request
2026-09-30
https://agent402.tools/api/embed-large
Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Tex…
CeloAI models
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
CeloOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
OptimismOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
SeiOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
AvalancheOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
MonadOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
ArbitrumOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-bulk-resolve
Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…
PolygonOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
SeiOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
OptimismOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
CeloOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
PolygonOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
AvalancheOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
MonadOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/ens-resolve
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
ArbitrumOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
SeiOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
OptimismOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
CeloOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
ArbitrumOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
MonadOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
AvalancheOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
PolygonOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/erc721-owner
Who owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint…
MonadOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/erc721-owner
Who owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint…
PolygonOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/erc721-owner
Who owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint…
ArbitrumOnchain data
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.