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/jwt-decode
Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.)
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-decode
Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.)
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-decode
Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.)
PolygonDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-decode
Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.)
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
PolygonDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
AvalancheDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
AvalancheDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
PolygonDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
OptimismMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
OptimismMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
OptimismMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
OptimismMarket data
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.
CeloDeveloper 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.
MonadDeveloper 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.
AvalancheDeveloper 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.
ArbitrumDeveloper tools
n/a/ request
2026-09-30

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.