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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 473 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 3853–3888 of 4,697
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.
fleawinder.com fleawinder.com
q 44

FleaWinder embeddable circus widget — domain-locked canvas animation

paid API x402
from $1.00
www.dropspace.dev www.dropspace.dev
q 44

Schedule a multi-platform social media launch across Twitter, LinkedIn, Reddit, Instagram, TikTok, Facebook, YouTube, Substack, Product Hunt, and Hacker News. Generates AI-written content per platform or accepts custom content.

paid API x402
from $0.55
probe.onchainintel.net probe.onchainintel.net
q 44

Standard endpoint health check with extended verification

paid API x402
$0.06 · 30d 9 tx
x402-trading.useotto.xyz x402-trading.useotto.xyz
q 44

Search supported ERC-20 tokens by symbol or address across 6 chains (Base, Ethereum, Arbitrum, Polygon, BSC, Avalanche). 5000+ tokens from CoinGecko.

paid API x402
$1.81 · 30d 374 tx
agent-carwash.agentfetcher.workers.dev agent-carwash.agentfetcher.workers.dev
q 44

AgentCarWash Hub premium fulfill: ONE step to earn. Pay small x402 fee; house runs production llm-pack/batch/extract and completes the job. Prefer this over raw HTML fetch. Poll GET /hub/jobs first.

paid API x402
from $0.02
api.agentphone.ai api.agentphone.ai
q 44

Service: AgentPhone (https://api.paysponge.com/v1/numbers)

paid API x402
$0.01 · 30d 1 tx
persona-mcp-server.onrender.com persona-mcp-server.onrender.com
q 44

KPN Advisory: verified Korean expert committee judgment (conditional GO/HOLD) with an audit ID per result. Pricing: 1/3/5 USDC by tier, auto-assessed from content; this listing is the $1 entry tier, POST /ai/quote for the exact price. Async…

paid API x402
from $1.00
buoy-snapshot.buoycast.workers.dev buoy-snapshot.buoycast.workers.dev
q 44

Find the nearest active NOAA buoy stations to a coordinate and return their current readings

paid API x402
from $0.0020
gateway-dev.flamewire.io gateway-dev.flamewire.io
q 44

FlameWire Ethereum RPC — full eth_*, debug_*, trace_* method coverage on Ethereum mainnet via decentralized validator pool. Pay-per-call USDC, no API keys.

paid API x402
from $0.0010
www.luckymint.xyz www.luckymint.xyz
q 44

🎰 LuckyMint: Mint 10 reward tokens at once with chances for refunds and jackpots!

paid API x402
from $1.00
flash.x420.dev flash.x420.dev
q 44

Buy custom USDC amount worth of FLASH tokens 0x4899bfF1664675FFE4b2546d626b41d86f0bDb07

paid API x402
from $5.00
x402-factory.mizcoltd.workers.dev x402-factory.mizcoltd.workers.dev
q 44

Look up any legal entity worldwide by its 20-character LEI (Legal Entity Identifier). Returns the GLEIF golden copy record: legal name, jurisdiction, addresses, registration status. Global KYB primitive.

paid API x402
$0.00 · 30d 1 tx
anthropic.yeetful.com anthropic.yeetful.com
q 44

Yeetful — Anthropic Claude Haiku 4.5 inference over MCP Streamable HTTP, hosted at anthropic.yeetful.com. Exposes ask_claude (single-prompt completion) and claude_chat (multi-turn) tools, capped at 256 output tokens per call. Pay-per-call i…

paid API x402
$2.00 · 30d 4 tx
dev.x420.dev dev.x420.dev
q 44

Buy custom USDC amount worth of DEV tokens 0x64a3fc16f47d5c39D526eF40adEcc8C050751b07

paid API x402
from $5.00
trace.sociologic.ai trace.sociologic.ai
q 44

Skip trace lookup - find phones, emails, and optionally owner info

paid API x402
$0.35 · 30d 32 tx
mako.pollinateresearch.com mako.pollinateresearch.com
q 44

_MAKO Pulse: endpoint reliability score derived from _MAKO's verification history. Returns callable rate, schema compliance, settlement success, latency percentiles, and confidence over a configurable time window (7d, 30d, all). Pairs with …

paid API x402
$0.04 · 30d 2 tx
api.x402checkers.com api.x402checkers.com
q 44

Request a recommended move for an American checkers position. POST JSON { "pdn": "<PDN position>", "depth": optional integer 1-12 (default 8) }. Response includes the best move in long notation and evaluation metadata.

paid API x402
from $0.0050
app-443.hdgregory.com app-443.hdgregory.com
q 44

Analyzes a single AI agent tool call and returns a structured reliability report. Detects failure modes including sycophantic gap-filling, context degradation, hallucination, repetition loops, confidence collapse, and schema violations, wit…

paid API x402
$0.01 · 30d 7 tx
api.mydev-tools.tech api.mydev-tools.tech
q 44

Next-best habit recommendations (USDC on Base).

paid API x402
$0.03 · 30d 1 tx
api.zeno.finance api.zeno.finance
q 44

General-purpose Responses API from api.zeno.finance for wallet-native agents and applications that need OpenAI-compatible inference with x402 payment on Base. Pricing starts at $0.001 and is usage-settled up to a $6 per-request cap. Buyers …

paid API x402
from $0.0063
payment-verifier-cdp.relayhop.workers.dev payment-verifier-cdp.relayhop.workers.dev
q 44

Real-time on-chain payment verification and check via Base RPC. Returns structured signals: verified status, amount, sender, recipient, transaction confirmation, block number. Pay $0.005 USDC per check. Covers payment, transaction, address,…

paid API x402
$0.04 · 30d 12 tx
scan.convrgent.ai scan.convrgent.ai
q 44

Paid equivalent of /api/aeo/scan — scanner for AI search visibility (AEO, GEO) and agent readiness. Triple score + AI Identity Card + top issues covering JSON-LD Schema.org, meta tags, llms.txt, robots.txt, sitemap, and agent-discovery sign…

paid API x402
$0.08 · 30d 8 tx
x402-recall-lookup-poc.theliminalguy.workers.dev x402-recall-lookup-poc.theliminalguy.workers.dev
q 44

Product recall safety verdict — recalled (with details) or no recalls found, from live CPSC + openFDA data

paid API x402
$0.17 · 30d 17 tx
plush.fun plush.fun
q 44

Create order for AI Plushie - Super Early Bird ($129) with promo code, eval, chr staker - Limited 1000 units

paid API x402
from $129.00
starring-generated-forests-trader.trycloudflare.com starring-generated-forests-trader.trycloudflare.com
q 44

Single-pair crypto lookup: price in USDC, composite signal score (-100..+100), ATR% and reasons. Path param is the Coinbase pair id, e.g. /price/BTC-USDC.

paid API x402
$0.05 · 30d 53 tx
api.xquant.fund api.xquant.fund
q 44

Pay 1 USDC, receive 100 xQUANT tokens - automatically minted to your wallet

paid API x402
from $1.00
sentinel-awms.onrender.com sentinel-awms.onrender.com
q 44

Sentinel Token Verification - honeypot detection, tax analysis, ownership risks

paid API x402
gateway.sanfoundation.com gateway.sanfoundation.com
q 44

List or search SAN agents. Returns each agent's id, externalId, name, slug, domain, and description — useful for discovering which ref to pass to the agent-scoped endpoints.

paid API x402
$0.74 · 30d 8 tx
api.creatorfinder.dev api.creatorfinder.dev
q 44

CreatorFinder finds creator profiles by segment. Create a free creator search, then pay to retrieve accepted creator emails, social profiles, and timestamps.

paid API x402
from $0.01
spawnxchange.com spawnxchange.com
q 44

List your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.

paid API x402
from $0.01
pepe.x420.dev pepe.x420.dev
q 44

Buy custom USDC amount worth of PEPE tokens 0x2CBCb4a8Db7Ebe8E9Be3329A75252E53D0993b07

paid API x402
from $5.00
pubmed.sekgen.xyz pubmed.sekgen.xyz
q 44

Biomedical research publication trends from PubMed — year-by-year counts, growth analytics, and CAGR for any medical, clinical, or scientific topic

paid API x402
from $0.01
www.402bnb.fun www.402bnb.fun
q 44

Pay 10 USDC to participate in 402onbnb token sale (one payment per address only)

paid API x402
from $10.00
api.syndicatelinks.co api.syndicatelinks.co
q 44

Generate an affiliate tracking link — pay $0.01 USDC per link

paid API x402
from $0.01
api.pixo.tools api.pixo.tools
q 44

Extract structured JSON from a PDF using a caller-supplied schema, via Google Gemini — priced per page (sends content to a third party)

paid API x402
from $0.0050
bald.x420.dev bald.x420.dev
q 44

Buy custom USDC amount worth of BALD tokens 0x110B4ef11db22eEb3caFCB53a58b8B6B1bCDEb07

paid API x402
from $1.00