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 310 AI 118 Verification 90 Finance 71 Blockchain 50 Other 27 Content 20 Compute 9 Storage 3 Media 3 Infrastructure 3 Social 2
sort Quality Revenue (30d) Recently updated Name
Showing 109–118 of 118
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.
stablestudio.dev stablestudio.dev

Pay-per-generation AI image and video creation — Nano Banana, GPT Image, Grok, Flux, Sora, Veo, Seedance, and Wan.

paid API ai x402
$157.77 · 30d 559 tx
ausca.com ausca.com

Metered agent infrastructure services: document OCR, document analysis, media transcription, browser sessions, and agent inboxes. Pay per call with x402 v2, no account or API keys, receipt-backed results.

paid API ai x402
$139.25 · 30d 337 tx
cheaptokens.ai cheaptokens.ai

Sells discounted Venice.ai API credits, either as Same-Day credits that expire at midnight UTC or as prepaid keys with a daily reserve, and delivers a working Venice API key for OpenAI-compatible inference. Payment is in USDC on Base via x4…

paid API ai x402
$2085.96 · 30d 615 tx
www.ax1.vc www.ax1.vc

AI-written verdict on a Base token contract: onchain metrics, a plain-language summary and a shareable card. The operator labels it entertainment, not trading advice.

paid API ai x402
$5.96 · 30d 298 tx
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
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
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
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