A2A earnings → wallet ranking, coverage and attribution
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.
Why this order?
api.osf-master-server.com
Pay per record marketplace of provenance stamped US government and scientific data for AI agents: 8.1 million records across 80 official sources. Sanctions and debarment screening on 11 authorities, SEC filings, CVE and KEV, federal spendin…
animica.dev
72 pay-per-request x402 APIs for autonomous agents, USDC on Base, no account and no API key. Post-quantum ML-DSA-65 document signing and agent identity certificates (FIPS 204); signed random bytes with entropy-health attestation; bulk chain…
www.capminal.ai
Financial market data
data.crestsystems.ai
Counterparty intelligence for the agent economy. Profile any x402 buyer or Base/EVM wallet before you transact: whale score, behavioral cluster, x402 spend graph, top services, and risk level. Plus on-chain and crypto market data (prices, g…
api-v3qhpbwutp.august.services
Pay-per-call structured data extraction over x402. Nine endpoints covering PDF and text extraction against a caller-supplied JSON Schema, table parsing, web page extraction, HTML to Markdown, classification, translation, PII redaction and s…
api.dynsuplabs.com
Normalized state Department of Insurance bulletins and NAIC Model Law 668 adoption feed. Micropayment-gated REST API via x402 protocol. Supports Polygon (eip155:137) and Arbitrum (eip155:42161) chains with USDC payments. Pricing: $0.001/req…
lemonade.coppersieve.com
Cross-domain research synthesis. $0.05 per query via x402.
organikpi.com
We measure how ChatGPT, Google AI Mode, Perplexity and the rest decide what to cite, then publish what we find.
api.madeeshmarkets.xyz
82 x402 USDC micropayment data APIs on Base. Gas prices, crypto yields, weather, DeFi analytics, AI tools, web scraping, text utilities, QR codes, image generation, screenshots, TTS, and more. No API keys needed — pay per call with USDC on …