Sato Hub
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
CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
Developer tools1,088Market data872Onchain data704Other577AI models416Web data296Media272Identity240Search144Agents124Security96Commerce16
First seen
2026-10-05 · last seen 2026-10-06

What we observed

Payments unknown, unknownNo 402 answer, not observedNot claimed
See the readings

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.
4,845 registered

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    ArbitrumOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    MonadOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    PolygonOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    AvalancheOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    SeiOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    OptimismOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/contract-source

    Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo).…

    CeloOnchain data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    CeloMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    ArbitrumMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    PolygonMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    MonadMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    AvalancheMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    OptimismMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/correlation

    Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated …

    SeiMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    MonadDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    SeiDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    AvalancheDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    CeloDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    OptimismDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    ArbitrumDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/count

    Count characters, words, lines, and (optionally) occurrences of a substring in text.

    PolygonDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    CeloDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    OptimismDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    SeiDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    AvalancheDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    PolygonDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    MonadDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/country-info

    Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offl…

    ArbitrumDeveloper tools

    n/a/ request

    2026-10-05

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    OptimismMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    CeloMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    PolygonMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    MonadMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    ArbitrumMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    AvalancheMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cpi-yoy

    Latest US Consumer Price Index year-over-year inflation rate (headline CPI-U) plus the trailing 12 months of YoY readings - the headline inflation number. Source: FRED CPIAUCSL with pc1 transformation. No params.

    SeiMarket data

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    SeiDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    CeloDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    OptimismDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    AvalancheDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    ArbitrumDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    MonadDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crc32

    CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.

    PolygonDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    OptimismDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    MonadDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    AvalancheDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    SeiDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    CeloDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    ArbitrumDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/cron-next

    Parse a 5-field cron expression and return the next N run times (UTC).

    PolygonDeveloper tools

    n/a/ request

    2026-09-30

  • https://agent402.tools/api/crypto-global

    Global crypto market snapshot: total market cap, total 24h volume, BTC dominance, ETH dominance, active coin count, active exchange count, and 24h market-cap change %. Returned in a chosen vs_currency (default usd). Bac…

    CeloMarket data

    n/a/ request

    2026-10-05

Evidence

as of 2026-10-06

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.

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

ChainSeller walletEndpointsAnswers 402x402-style payments
Base0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06030 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)
Arbitrum0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
2026-09-19
unknown. not measured on this chain yet
Avalanche0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
2026-09-19
unknown. not measured on this chain yet
Celo0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
2026-09-19
unknown. not measured on this chain yet
Monad0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
2026-09-19
unknown. not measured on this chain yet
Optimism0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
2026-09-19
unknown. not measured on this chain yet
Polygon0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
2026-09-19
unknown. not measured on this chain yet
Sei0xabf4fabd7c416fb67202e5f9002389fc75e2a9d06060 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
Highest
$2.00
per request, as registeredas of

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.