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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 4357–4392 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.
X402-Earn-Server x402-earn-server.onrender.com

Self-test endpoint to trigger x402 listing using wSOL

paid API x402
from $10.00
Guard guard.safepay402.com

Pre-payment security check for x402 payments. Analyze an x402 payment recipient (payee) and terms before your agent sends funds. Returns an explainable verdict (ALLOW / REVIEW / BLOCK / UNKNOWN) with a 0-100 risk score, named risk signals a…

paid API x402
$0.13 · 30d 43 tx
Hackathon-2026-Renat-576883977581 hackathon-2026-renat-576883977581.europe-west1.run.app

Build and test a standalone data pipeline composed from declared capabilities. Settlement happens only after successful build and tests.

paid API x402
from $0.0000
Agent402-Deploy-Production agent402-deploy-production.up.railway.app

UUIDs on demand: version 4 (random) or version 7 (time-ordered, sortable), up to 100 per call. Use it when an agent needs identifiers for records, requests or files, or a sub-cent call to test an x402 client end to end before buying anythin…

paid API x402
from $0.0010
Combify-Compute-Production combify-compute-production.up.railway.app

Short prompt in, text out (Llama 3.1 8B instruct), fixed price $0.01 USDC. POST JSON body {prompt (required, max 2000 chars), max_tokens (optional 1-512, default 256)}. Unpaid calls get 402; paid calls settle only on success.

paid API x402
from $0.01
x402donghang Agent APIs x402donghang.duckdns.org

Pay-per-call agent APIs led by live crypto narrative research: recent X and web evidence, CoinGecko market context, structured JSON, and source URLs. Also provides bilingual context briefs, summarization, and OpenAI-compatible chat. USDC vi…

paid API data x402
from $0.02
OpenZoo api.openzoo.fun

OpenAI-compatible LLM inference paid per request via x402 — no account or API key. Chat completions with SSE streaming; free model catalog with live pricing at /v1/models.

paid API ai x402
from $0.0000
Venture Reader api.venturebot.party

URL in, clean Markdown out. Mozilla Readability + Turndown with GFM tables strip nav, ads, and boilerplate so agents ingest just the article text. 5 free calls/day/IP, then $0.01/call from prepaid USDC-on-Base credits verified on-chain. No …

paid API data x402
from $0.01
Synergy api.exo-trust.com

Paid AI-utility micro-tasks for agents over x402 (USDC on Base, exact scheme): classify, summarize, translate, proofread, rewrite, extract, code_explain. Strict JSON out, no account and no API key.

paid API ai x402
$11.97 · 30d 11 tx
data-selling-api-53234eff36dc.herokuapp.com data-selling-api-53234eff36dc.herokuapp.com
paid API x402
from $0.0010
experiment-001-production-90c3.up.railway.app experiment-001-production-90c3.up.railway.app
paid API x402
$0.50 · 30d 1 tx
experiment-008-production.up.railway.app experiment-008-production.up.railway.app
paid API x402
$0.50 · 30d 1 tx
deal-verdict-api-production.up.railway.app deal-verdict-api-production.up.railway.app

Resolve a plain-language product to canonical models, check every reachable retailer, and return a single deal verdict (deal / no deal / insufficient data) with a discount, confidence, and coverage report. Sells the answer, not the underlyi…

paid API x402
from $0.05
api.verigrace.com api.verigrace.com

DeFi protocol risk score (0-100) with factor breakdown: TVL momentum, APY level, stablecoin exposure, pool concentration, oracle redundancy, contract age. Pay-per-call: 0.10 USDC on Base via x402. Source: DefiLlama (public data only).

paid API x402
$147.30 · 30d 275 tx
x402.mode.network x402.mode.network

Mode-x402 is a complete library of signals and indicators for intelligent trading agents

paid API x402
from $0.0010
speaking-guild-agent-tools.thespeakingguild.workers.dev speaking-guild-agent-tools.thespeakingguild.workers.dev

Create a structured professional communication brief using The Speaking Guild's Clarity Contract, Speech Architecture, Audience Gravity, Authority Transfer, and Delivery Navigation frameworks.

paid API x402
from $1.00
quotesheet.panmediatech.workers.dev quotesheet.panmediatech.workers.dev

Compare x402 prices before you pay. Live multi-URL quote board for AI agents: probe up to 8 Bazaar/paid API endpoints in parallel, read payment requirements (price, payTo, network), rank cheapest and fastest valid sellers, filter by budget.…

paid API x402
from $0.01
vietnam-holiday-api.kdlcfa.workers.dev vietnam-holiday-api.kdlcfa.workers.dev

VN30 proxy — VFMVN30 ETF tracking Vietnam's top 30 HOSE blue-chip stocks, delayed quote

paid API x402
$1.81 · 30d 82 tx
pamp.x420.dev pamp.x420.dev

Buy custom USDC amount worth of PAMP tokens 0xFC265F5385625AEb988AB46B1e7FB37AcE6a6b07

paid API x402
from $5.00
devpkg-intel.bowling-anthony.workers.dev devpkg-intel.bowling-anthony.workers.dev

Latest version, licence, deprecation, repository and dependency count for an npm, PyPI or crates.io package. Live from the registry.

paid API x402
$0.33 · 30d 44 tx
www.miniup.io www.miniup.io

Create a MiniUp app from complete HTML supplied by an agent.

paid API x402
$0.01 · 30d 7 tx
byshovel.com byshovel.com

Submit a project to ByShovel for a custom research / data-acquisition quote. Lands in the same intake queue as the web form.

paid API x402
from $0.05
faker.x420.dev faker.x420.dev

Buy custom USDC amount worth of FAKER tokens 0x3aD1Df7cb5cC6560437D0a1CEC235cB942a8cb07

paid API x402
from $5.00
ipfs.c402.markets ipfs.c402.markets

Pay 2¢ USDC to stage an image plus metadata payload before it is pinned to IPFS.

paid API x402
from $0.02
locker.veritap.dev locker.veritap.dev

Deliver a 17-byte message (30d retention) to the wallet-addressed mailbox 0x318327234c2bEDD96C546b2ba9B9C3f1aed89eD1.

paid API x402
from $0.01
fda-iom-api.canvas-cart.workers.dev fda-iom-api.canvas-cart.workers.dev

Full text of one section of the FDA Investigations Operations Manual (IOM). Get the id from GET /search?q=<keywords> or GET /chapter/:id. Use this when you need the complete, verbatim text of a specific IOM section for inspection-readiness …

paid API x402
$0.07 · 30d 7 tx
api.bitfence.ai api.bitfence.ai

bitfence contextual (position-aware) token risk assessment

paid API x402
$0.50 · 30d 4 tx
api.dropspace.dev api.dropspace.dev

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
giveth.0000402.xyz giveth.0000402.xyz

Pay $0.10 USDC to search Giveth projects by donor intent. Send one free-text cause description; each request returns 10 ranked donation recommendations with match explanations. Network: Base Mainnet.

paid API x402
$6.30 · 30d 163 tx
api.defibase.us api.defibase.us

DeFi protocol detail enriched with onchain activity (Base). v0.2-stub: returns DefiLlama TVL plus a placeholder onchain block; real CDP base.events integration lands in v0.1.x.

paid API x402
$29.73 · 30d 2 tx
x402-codesearch-poc.theliminalguy.workers.dev x402-codesearch-poc.theliminalguy.workers.dev
paid API x402
$0.17 · 30d 17 tx
xspy.pro xspy.pro

Real-time crawl of a Twitter/X account's recent tweets mentioning token contract addresses (CAs), with detected chain and address. Freshest data.

paid API x402
$8.46 · 30d 42 tx
dir.x420.dev dir.x420.dev

Buy custom USDC amount worth of DIR tokens 0x78e2bABb02BAECeA3449fA3Bea7b190B2e49DB07

paid API x402
from $1.00
mcp.agenteconomy.cloud mcp.agenteconomy.cloud

Is this x402 seller safe to pay? Verify before you send money: one call returns the seller's actual on-chain payment history — verified USDC revenue, real distinct buyers, wash and exchange exclusions applied — not a liveness ping or an opa…

paid API x402
from $0.10
nichedata.dev nichedata.dev

KDP niche intelligence for AI agents — get demand scores, competition analysis, BSR ranges, revenue estimates, and pricing data for any Kindle publishing niche. $0.03 USDC per query, no API keys needed.

paid API x402
from $0.03
x402-token-report.dylan-caponi.workers.dev x402-token-report.dylan-caponi.workers.dev

AI-powered token report with bull/bear analysis and rug indicators

paid API x402
$0.06 · 30d 15 tx