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 2026-10-07

Seller wallet: 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Chains: BaseArbitrumAvalancheCeloMonadOptimismPolygonSei
Hosts: agent402.tools
Categories: Developer tools1,088Market data872Onchain data704Other577AI models416Web data296Media272Identity240Search144Agents124Security96Commerce16
First seen: 2026-10-05 · last seen 2026-10-07

What we observed

Payments unknownNo 402 answer2026-09-19Not claimed

See the readings

Endpoints

4,845 registered

https://agent402.tools/api/keywords
Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, and dedup.
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/keywords
Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, and dedup.
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/keywords
Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, and dedup.
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
CeloOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
OptimismOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
SeiOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
AvalancheOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
MonadOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
ArbitrumOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
PolygonOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
CeloOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
AvalancheOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
SeiOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
OptimismOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
PolygonOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
MonadOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classification combines DeFiLlama's parent-chain hint with a curated list of well-known L2s…
ArbitrumOnchain data
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
CeloOther
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
ArbitrumOther
n/a/ request
2026-10-06
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
CeloOther
n/a/ request
2026-10-06
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
OptimismOther
n/a/ request
2026-10-06
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
SeiOther
n/a/ request
2026-10-06
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
AvalancheOther
n/a/ request
2026-10-06
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
MonadOther
n/a/ request
2026-10-06
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
PolygonOther
n/a/ request
2026-10-06
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
AvalancheDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
PolygonDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
CeloOther
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/llm
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_sche…
CeloAI models
n/a/ request
2026-10-05
https://agent402.tools/api/llm
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_sche…
OptimismAI models
n/a/ request
2026-10-05
https://agent402.tools/api/llm
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_sche…
AvalancheAI models
n/a/ request
2026-10-05
https://agent402.tools/api/llm
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_sche…
SeiAI models
n/a/ request
2026-10-05
https://agent402.tools/api/llm
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_sche…
MonadAI models
n/a/ request
2026-10-05

Evidence

as of 2026-10-07

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 2026-10-07

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 2026-10-07

Highest

$2.00

per request, as registeredas of 2026-10-07

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 2026-10-07. Appearing here is not an endorsement. Check an endpoint with the doctor.