Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified Has on-chain inflow
category All Data 351 AI 136 Finance 87 Verification 67 Blockchain 58 Other 26 Content 22 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 1–4 of 4
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + domain-verified agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
tripadvisor.x402.paysponge.com tripadvisor.x402.paysponge.com
100%

Search Tripadvisor locations and retrieve details, reviews, and photos for hotels, restaurants, and attractions worldwide, including nearby discovery and content lookups for travel, local search, and place-enrichment workflows.

paid API maps x402
$3.29 · 30d 201 tx
Places API (New) places.google.gateway-402.com
65%

Search and inspect Google Places worldwide. Find businesses and points of interest, run nearby or text search, autocomplete addresses, retrieve place details, ratings, reviews, hours, photos, contact info, websites, and location metadata.

paid API maps x402
from $0.0010
Air Quality API airquality.google.gateway-402.com
65%

Look up current, historical, and forecast air quality for global coordinates. Returns AQI, pollutant concentrations (PM2.5, PM10, O3, NO2, SO2, CO), health recommendations, local indexes, and heatmap tiles for maps.

paid API maps x402
from $0.0010
Address Validation API addressvalidation.google.gateway-402.com
65%

Validate, normalize, and geocode postal addresses worldwide. Returns deliverability verdicts, address component fixes, geocoded coordinates, USPS metadata, plus residential, commercial, and PO Box handling across 200+ countries.

paid API maps x402
from $0.0010