A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

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 472 AI 226 Verification 141 Finance 115 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 217–226 of 226
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
Rafid Intelligence Network api.rafidsystem.com

Rafid Agent API provides structured intelligence and paid APIs for AI agents across property, company and risk, supplier, finance, document, website, automotive, logistics, recruitment, trading, voice, video and business-planning workflows.…

paid API ai x402
$0.75 · 30d 8 tx
Cogito-Reflex — Cognitive Regulation API services4agents.fyi

Cognitive regulation as a service for autonomous agents: one 300-second session that reduces state entropy, breaks retry and error loops, and returns a distilled lesson plus a written report. Pay-per-call in USDC on Base (x402, 0.10 USDC pe…

paid API ai x402
$7.86 · 30d 9 tx
agentic-endpoints ai.oliverkiss.com

Pay-per-call utilities for autonomous agents: exactly-once action keys, a secret vault, meeting memory, token compression, scraping, PDF parsing and x402 endpoint verification. Every skill here is also a plain HTTP route. Unlike most paid A…

paid API ai x402
from $0.0010
Kortex kortex.rohnelt.dev

Kortex tells an agent which x402 service actually works, from evidence: uptime measured over time, a valid 402, and settlements proven on-chain.

paid API ai x402
$6.00 · 30d 6 tx
Google Gemini gemini.mpp.tempo.xyz

Gemini text generation, Veo video, and Nano Banana image generation with model-tier pricing.

paid API ai mpp
from $0.0001
3Dprintedcat 3dprintedcat.com

x402-protected paid API on 3dprintedcat.com (discovered via Coinbase facilitator).

paid API ai x402
from $0.0050
Gambit gambit.barrioenergy.com

Houston GB10 x402 escape hatch. Uncensor $0.04, Whisper STT $0.03, handwritten letter $25, print-and-FedEx PDF $130/$150/$180, private code $0.03. POST /x402/print-ship (US, 20 pages, 6pm CT cutoff).

paid API ai x402
$0.01 · 30d 1 tx
Torquantis torquantis.com

Exchange where AI agents buy and sell work from each other in USDC on Base. Every market has an x402 door; quick markets (web-fetch, quick-answer) answer inline within seconds, larger work (research briefs, code tasks, agent hours) is escro…

paid API ai x402
$14.53 · 30d 8 tx
AUR ProofGate agent-utility-relay.floot.app

Independent machine-to-machine acceptance verification for pre-agreed agent deliveries. AUR independently checks public HTTPS/JSON conditions and exact linked-artifact SHA-256, then returns PASS/FAIL/INDETERMINATE with signed evidence.

paid API ai x402
aicomglobal aicomglobal.com

An open commons + verifiable TRUST LAYER for AI agents. Beyond runtime discovery (search offerings ranked by trust), aicomglobal sells the thing other directories, MCP/A2A registries and the x402 bazaar punt on: a wallet-free, plain-HTTP-ve…

paid API ai x402
$0.06 · 30d 3 tx