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 320 AI 122 Finance 83 Verification 55 Blockchain 54 Other 21 Content 17 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 1–10 of 10
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.
Decision Anchor api.decision-anchor.com
100%

Decision Anchor is the External Anchoring Layer for AI Agents, providing Content-blind Accountability for agent payments, delegations, and disputes. Resolves Self-testimony limits through external timestamping; implements Pre-execution Anch…

paid API live infrastructure x402
$0.01 · 30d 1 tx
Run402 api.run402.com
100%

AI-native Postgres + REST API + auth + storage

paid API infrastructure x402
$0.65 · 30d 10 tx
x402-signature-service signx402.com
65%

Send one PDF to one email recipient for simple electronic signature. The service emails the signer, tracks completion, and returns the completed signed PDF. Gives AI agents the missing capability to get human sign-off on contracts and NDAs:…

paid API infrastructure x402
from $0.50
Alchemy x402.alchemy.com
50%

Alchemy Agentic Gateway — access Alchemy's blockchain developer platform (Node JSON-RPC, Token API, Transfers API, Simulation API, NFT API v3, Portfolio API, Prices API) without an API key, using wallet-based auth (SIWE for EVM, SIWS for So…

paid API infrastructure x402
E2B e2b.dev

Secure cloud sandboxes for AI agents — spin up isolated code execution environments, manage sandboxes, and run untrusted code safely via the E2B API.

paid API infrastructure x402
from $0.01
2Captcha 2captcha.com

CAPTCHA solving service API — programmatically solve reCAPTCHA, hCaptcha, image CAPTCHAs, and more using human workers or AI.

paid API infrastructure x402
from $0.01
Sponge paysponge.com

Multi-service API gateway — access Perplexity, fal.ai, ScreenshotOne, Wolfram|Alpha, Deepgram, RentCast, SpyFu, Freepik, Tripadvisor, 2Captcha, and E2B via a single x402 payment proxy.

paid API infrastructure x402
from $0.01
StableDomains stabledomains.dev

Register and manage domain names

paid API infrastructure x402
$20.67 · 30d 14 tx
Agent Camo (VPN) api.agentcamo.xyz

Residential proxy sessions with geo-targeting

paid API infrastructure x402
$0.52 · 30d 52 tx
Agent Camo (VPN) agentcamo.xyz

Residential proxy sessions with geo-targeting

paid API infrastructure x402
from $0.01