x402 merchant

agent402.tools

Name: agent402.tools on x402: dated readings
Creator: Sato Hub
License: https://creativecommons.org/licenses/by/4.0/

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

as of 2026-10-08

Seller wallet: 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Chains: BaseArbitrumAvalancheCeloMonadOptimismPolygonSei
Hosts: agent402.tools
Categories: Developer tools1,088Market data872Onchain data704Other577AI models424Web data296Media272Identity240Search144Agents124Security96Commerce16
First seen: 2026-10-05 · last seen 2026-10-08

What we observed

Paid by 99 outside payers · 7d2026-10-08No 402 answer2026-09-19Not claimed

See the readings

Endpoints

4,853 registered

https://agent402.tools/api/transfer-authorization
Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to autho…
CeloOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/transfer-authorization
Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to autho…
OptimismOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/transfer-authorization
Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to autho…
SeiOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/transfer-authorization
Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to autho…
AvalancheOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
MonadMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
AvalancheMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
OptimismMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
CeloMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
SeiMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
ArbitrumMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-avg-rates
Latest average interest rates the US Treasury is paying by security type (Bills, Notes, Bonds, TIPS, FRNs, marketable vs non-marketable). Public domain, no key. No params - returns the most recent reporting month.
PolygonMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
OptimismMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
AvalancheMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
PolygonMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
ArbitrumMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
SeiMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
MonadMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-debt
Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.
CeloMarket data
n/a/ request
2026-10-05
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
AvalancheMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
OptimismMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
CeloMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
SeiMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
PolygonMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
MonadMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-curve
Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…
ArbitrumMarket data
n/a/ request
2026-10-08
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/treasury-yield-history
Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.
OptimismMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
PolygonDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
AvalancheDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/truncate
Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
AvalancheAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
PolygonAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
ArbitrumAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
MonadAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
SeiAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
OptimismAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts
Convert text to speech using OpenAI TTS-1: returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken). 10 voices availab…
CeloAI models
n/a/ request
2026-10-06
https://agent402.tools/api/tts-hd
Convert text to speech using OpenAI TTS-1-HD (higher fidelity). Returns base64-encoded audio. Same interface as /api/tts but with better audio quality. No API key needed; pay per call via x402. Text capped at 2000 chars.
ArbitrumAI models
n/a/ request
2026-09-24
https://agent402.tools/api/tts-hd
Convert text to speech using OpenAI TTS-1-HD (higher fidelity). Returns base64-encoded audio. Same interface as /api/tts but with better audio quality. No API key needed; pay per call via x402. Text capped at 2000 chars.
SeiAI models
n/a/ request
2026-09-24
https://agent402.tools/api/tts-hd
Convert text to speech using OpenAI TTS-1-HD (higher fidelity). Returns base64-encoded audio. Same interface as /api/tts but with better audio quality. No API key needed; pay per call via x402. Text capped at 2000 chars.
CeloAI models
n/a/ request
2026-09-24
https://agent402.tools/api/tts-hd
Convert text to speech using OpenAI TTS-1-HD (higher fidelity). Returns base64-encoded audio. Same interface as /api/tts but with better audio quality. No API key needed; pay per call via x402. Text capped at 2000 chars.
MonadAI models
n/a/ request
2026-09-24

Evidence

as of 2026-10-08

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)

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

Lowest

$0.001

per request, as registeredas of 2026-10-08

Highest

$2.00

per request, as registeredas of 2026-10-08

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.