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
Categories: Developer tools1,088Market data872Onchain data704Other577AI models416Web data296Media272Identity240Search144Agents124Security96Commerce16
First seen: 2026-10-05 · last seen 2026-10-06

What we observed

Payments unknownNo 402 answer2026-09-19Not claimed

See the readings

Endpoints

4,845 registered

https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
ArbitrumDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
SeiDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
MonadDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
AvalancheDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
OptimismDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
CeloDeveloper tools
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
OptimismMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor - any sophisticated method (SES, Holt,…
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
SeiMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
OptimismMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
AvalancheMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
CeloMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
ArbitrumMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
MonadMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/forecast-ses
Simple exponential smoothing (SES) - level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default al…
PolygonMarket data
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
CeloOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-calendar
Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc. Useful for scheduling agents around event-driven moves.
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
CeloOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-release-observations
Bulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated…
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
CeloSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
OptimismSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
SeiSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
AvalancheSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
MonadSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
ArbitrumSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-search
Full-text search across FRED's ~800,000 economic time series. Returns series IDs (use with /api/fred-series), titles, frequency, units, and a popularity score.
PolygonSearch
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
OptimismOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
SeiOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
AvalancheOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
ArbitrumOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
PolygonOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series
Fetch any of FRED's ~800,000 economic time series by series ID - GDP (GDPC1), CPI (CPIAUCSL), unemployment (UNRATE), fed funds (DFF), and so on. Supports date windowing and the standard FRED units transformations (lin, …
CeloOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series-info
Metadata for a FRED series: title, frequency, units, seasonal adjustment, observation date range, and popularity. Use before /api/fred-series to confirm the series fits your needs.
MonadOther
n/a/ request
2026-09-30
https://agent402.tools/api/fred-series-info
Metadata for a FRED series: title, frequency, units, seasonal adjustment, observation date range, and popularity. Use before /api/fred-series to confirm the series fits your needs.
OptimismOther
n/a/ request
2026-09-30

Evidence

as of 2026-10-06

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 2026-10-06

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 2026-10-06

Highest

$2.00

per request, as registeredas of 2026-10-06

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.