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Pay-per-call discovery
Endpoints you can call with USDC over the x402 protocol — verified through Suverse Pay or self-listed by their operators.
505 listings
Project Gutenberg Book Detail
Returns full metadata for one Project Gutenberg book by its numeric ID, including title, authors, subjects, and download links. Source: gutendex.com.
$0.055 per call
Art Institute of Chicago Artwork Search
Full-text search over the Art Institute of Chicago collection, returning matching artworks ranked by relevance. Source: api.artic.edu.
$0.065 per call
FDIC Bank Financials
Quarterly financial metrics (assets, deposits) for FDIC-insured banks filtered by state. Data from the FDIC BankFind financials API.
$0.07 per call
PoetryDB Poem By Title
Returns the full text and metadata of a poem matching the given title from the PoetryDB classic-poetry database. Source: poetrydb.org.
$0.055 per call
Peak River Discharge Outlook
Returns daily maximum river discharge for an extended forecast horizon at a lat/lng point from Open-Meteo Flood (GloFAS), as JSON.
$0.07 per call
Air Quality Index (US and European)
Returns the current US AQI and European AQI plus PM2.5 and PM10 at a lat/lng point from Open-Meteo, as JSON.
$0.055 per call
ZenQuotes Quote Of The Day
Returns the daily quote of the day with its author from the ZenQuotes service. Source: zenquotes.io.
$0.05 per call
GBIF Species Name Match
Matches a scientific name against the GBIF backbone and returns the accepted taxon with full classification, as JSON.
$0.055 per call
Pokemon TCG Card Search
Searches Pokemon Trading Card Game cards by name and returns matching card metadata (set, rarity, supertype) from the Pokemon TCG API.
$0.07 per call
Federal Register Document Detail
Full metadata for a single Federal Register document by its document number (title, agencies, action, dates). Data from the Federal Register API.
$0.055 per call
FX Rate Time Series (Date Range)
Daily ECB reference exchange rates for a base/target pair across a date range. Source: Frankfurter (frankfurter.dev), ECB data, keyless.
$0.07 per call
Current Air Quality by Coordinate
Returns current air quality at a lat/lng point from Open-Meteo, including PM10, PM2.5, carbon monoxide and ozone concentrations, as JSON.
$0.055 per call
US Address to Census Geographies
Returns the Census tract, block, county, and state geographies for a US address via the keyless US Census Bureau geocoder.
$0.08 per call
Rick and Morty Character
Returns a Rick and Morty character by id (name, status, species, gender, origin) from the Rick and Morty API.
$0.05 per call
Trivia Question Bank
Returns a batch of multiple-choice trivia questions for a chosen category from the Open Trivia Database.
$0.055 per call
FCC Census Block Lookup
Returns the Census block, county, and state FIPS codes for a coordinate pair via the keyless FCC block-find API.
$0.06 per call
NASA POWER Daily Climate Point
Returns daily climate parameters (e.g. 2m temperature, corrected precipitation) for a lat/lng point from the NASA POWER project, as JSON.
$0.085 per call
Cleveland Museum of Art Artwork Detail
Returns full catalog detail for one Cleveland Museum of Art artwork by numeric ID, including title, creation date, and type. Source: openaccess-api.clevelandart.org.
$0.06 per call
MusicBrainz Label Search
Searches the MusicBrainz open music database for record labels by name and returns matches with type and area. Source: musicbrainz.org.
$0.06 per call
US Address Geocoder
Geocodes a one-line US street address to coordinates and matched address via the keyless US Census Bureau geocoder.
$0.07 per call