agent402.tools
Developer tools API on Base, Arbitrum, Avalanche, Celo, Monad, Optimism, Polygon and Sei, paid per request with x402.
- Endpoints4,853
- Price per requestfrom $0.001
- Outside payers · 7d99
- Answer 4020 of 8
Overview
- Seller wallet
- 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
- Chains
- BaseArbitrumAvalancheCeloMonadOptimismPolygonSei
- Hosts
- agent402.tools
- CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
- Developer tools1,088Market data872Onchain data704Other577AI models424Web data296Media272Identity240Search144Agents124Security96Commerce16
- First seen
- 2026-10-05 · last seen 2026-10-08
What we observed
Endpoints
EndpointsDescriptions are the seller's own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.https://agent402.tools/api/x-users-lookup
Look up up to 10 X (Twitter) accounts by username in one call. Returns each found profile with public metrics (followers, following, tweets, listed), verification status and bio, plus the list of usernames X did not res…
AvalancheWeb datan/a/ request
2026-09-11
https://agent402.tools/api/x-users-lookup
Look up up to 10 X (Twitter) accounts by username in one call. Returns each found profile with public metrics (followers, following, tweets, listed), verification status and bio, plus the list of usernames X did not res…
SeiWeb datan/a/ request
2026-09-11
https://agent402.tools/api/x-users-lookup
Look up up to 10 X (Twitter) accounts by username in one call. Returns each found profile with public metrics (followers, following, tweets, listed), verification status and bio, plus the list of usernames X did not res…
CeloWeb datan/a/ request
2026-09-11
https://agent402.tools/api/x-users-lookup
Look up up to 10 X (Twitter) accounts by username in one call. Returns each found profile with public metrics (followers, following, tweets, listed), verification status and bio, plus the list of usernames X did not res…
OptimismWeb datan/a/ request
2026-09-11
https://agent402.tools/api/x-users-lookup
Look up up to 10 X (Twitter) accounts by username in one call. Returns each found profile with public metrics (followers, following, tweets, listed), verification status and bio, plus the list of usernames X did not res…
PolygonWeb datan/a/ request
2026-09-11
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
OptimismDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
CeloDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
MonadDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
ArbitrumDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
PolygonDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
SeiDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-audit
Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…
AvalancheDeveloper toolsn/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
MonadMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
CeloMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
SeiMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
OptimismMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
AvalancheMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
ArbitrumMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-market-pulse
Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…
PolygonMarket datan/a/ request
2026-10-05
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
PolygonDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
AvalancheDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
SeiDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
ArbitrumDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
MonadDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
OptimismDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-quote
Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.
CeloDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
OptimismOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
PolygonOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
CeloOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
MonadOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
ArbitrumOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
AvalancheOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-trending
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…
SeiOthern/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
ArbitrumOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
MonadOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
AvalancheOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
OptimismOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
SeiOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
CeloOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402-verify
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …
PolygonOnchain datan/a/ request
2026-10-05
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
SeiOthern/a/ request
2026-09-30
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
PolygonOthern/a/ request
2026-09-30
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
CeloOthern/a/ request
2026-09-30
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
OptimismOthern/a/ request
2026-09-30
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
AvalancheOthern/a/ request
2026-09-30
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
MonadOthern/a/ request
2026-09-30
https://agent402.tools/api/x402/seller-trust
Trust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain,…
ArbitrumOthern/a/ request
2026-09-30
https://agent402.tools/api/xml-to-json
Parse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays).
AvalancheDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/xml-to-json
Parse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays).
MonadDeveloper toolsn/a/ request
2026-09-30
https://agent402.tools/api/xml-to-json
Parse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays).
OptimismDeveloper toolsn/a/ request
2026-09-30
Evidence
Answers HTTP 402
Answers HTTP 402Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.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)
x402-style paymentsMethod: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.99outside payers
2801 x402-style payments from 99 distinct payers, $52.07 USDC in the last 7 days (Base, exact read)
window ended 2026-10-08
- Payments
- 2,801
- Payers
- 99
- USDC
- 52.07
All USDC received at this payout address: $52.08 (includes payments that are not x402)
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-08, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
By chain
| Chain | Seller wallet | Endpoints | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 604 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | 2801 x402-style payments from 99 distinct payers, $52.07 USDC in the last 7 days (Base, exact read) |
| Arbitrum | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 607 | 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 | 607 | 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 | 607 | 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 | 607 | 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 | 607 | 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 | 607 | 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 | 607 | 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
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 2026-10-08. Appearing here is not an endorsement. Check an endpoint with the doctor.