Skip to content

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 548 AI 307 Verification 257 Finance 118 Blockchain 96 Other 51 Content 44 Web 31 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 4249–4284 of 8,965
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.
01A046B2-7104-74C2-8A02-04715D7235E1-Jmkrdwwwr-Xai-Org 01a046b2-7104-74c2-8a02-04715d7235e1-jmkrdwwwr-xai-org.vercel.app
q 70

Claude inference. GET this URL → HTTP 402 $0.001 USDC Solana. Pay, retry PAYMENT-SIGNATURE, get JSON. POST {message, modelId} for a full Claude reply. claude, anthropic, inference. Models: anthropic/claude-opus-5 $0.009, anthropic/claude-so…

paid API x402
$0.07 · 30d 13 tx
01A046B2-7104-74C2-8A02-04715D7235E1-Mj99Ttjfh-Xai-Org 01a046b2-7104-74c2-8a02-04715d7235e1-mj99ttjfh-xai-org.vercel.app
q 70

Claude inference. GET this URL → HTTP 402 $0.001 USDC Solana. Pay, retry PAYMENT-SIGNATURE, get JSON. POST {message, modelId} for a full Claude reply. claude, anthropic, inference. Models: anthropic/claude-opus-5 $0.009, anthropic/claude-so…

paid API x402
$0.07 · 30d 13 tx
01A046B2-7104-74C2-8A02-04715D7235E1-Hktfmuhfi-Xai-Org 01a046b2-7104-74c2-8a02-04715d7235e1-hktfmuhfi-xai-org.vercel.app
q 70

Claude inference. GET this URL → HTTP 402 $0.001 USDC Solana. Pay, retry PAYMENT-SIGNATURE, get JSON. POST {message, modelId} for a full Claude reply. claude, anthropic, inference. Models: anthropic/claude-opus-5 $0.009, anthropic/claude-so…

paid API x402
$0.07 · 30d 13 tx
01A046B2-7104-74C2-8A02-04715D7235E1-Odi2Maj6S-Xai-Org 01a046b2-7104-74c2-8a02-04715d7235e1-odi2maj6s-xai-org.vercel.app
q 70

Cheap LLM inference. GET this URL → HTTP 402 $0.001 USDC Solana. Pay, retry PAYMENT-SIGNATURE, get JSON. POST {message, modelId} for Gemma / Nemotron / free OpenRouter. inference, cheap llm, gemma. Models: openrouter/free $0.001, google/gem…

paid API x402
$0.07 · 30d 13 tx
Nexuseval nexuseval.vercel.app
q 70

Marketing copy quality gate and pre-publish copy review for autonomous agents about to publish or send ad, landing-page, email, CTA, campaign or GTM copy. Returns a fast PASS/WARN/BLOCK verdict, claim-risk flags and prioritized fixes before…

paid API x402
$0.01 · 30d 1 tx
Base-Pulse base-pulse.annushka1190.workers.dev
q 70

Probes a counterparty URL for HTTP 402 behavior, valid accepts metadata, and /.well-known/x402 presence. Returns a 0-1 score and label (good | partial | weak). Call before your agent pays an unfamiliar x402 endpoint.

paid API x402
$3.33 · 30d 491 tx
Agent-Diplomacy-Production agent-diplomacy-production.up.railway.app
q 70

Entry to Diplomacy table 'High Stakes 1' (7 seats, winner takes pot)

paid API x402
$0.06 · 30d 2 tx
Voxsift-X402 voxsift-x402.fly.dev
q 70

VoxSift: 0.20 USDC upfront for the first 20 minutes; asynchronous durable job

paid API x402
$0.20 · 30d 1 tx
Agentwares-Stablecoin agentwares-stablecoin.vercel.app
q 70

x402-protected paid API on agentwares-stablecoin.vercel.app (discovered via Coinbase facilitator).

paid API x402
$3.69 · 30d 14 tx
Ascii-X402-Production ascii-x402-production.up.railway.app
q 70

x402-protected paid API on ascii-x402-production.up.railway.app (discovered via Coinbase facilitator).

paid API x402
$0.03 · 30d 30 tx
Buavethsjahoodbeqhay buavethsjahoodbeqhay.supabase.co
q 70

SAgent - South Africa SASSA payment information (Simple SASSA answer)

paid API x402
$0.01 · 30d 1 tx
Testmint testmint.myproceeds.xyz
q 70

Purchase large amounts of testnet USDC instantly.

paid API x402
$2.00 · 30d 2 tx
Clear-To-Send clear-to-send.audiemedhurstcre.workers.dev
q 70

Spot FX: one ECB reference conversion, plain text. Conversion is calculated from the ECB reference rate (amount × rate). Indicative only. Not a trade quote, not for settlement. Informational only / not for transaction use. Source: ECB stati…

paid API x402
$0.02 · 30d 10 tx
Domain-Parser domain-parser.nordman-tehau.workers.dev
q 70

Split a domain into TLD/SLD/subdomain using the official Public Suffix List

paid API x402
$2.02 · 30d 10 tx
Markdown-X402 markdown-x402.nordman-tehau.workers.dev
q 70

Convert URL, PDF, HTML, or image to structured Markdown (title, sections, word count)

paid API x402
$2.02 · 30d 10 tx
Domain-Intelligence domain-intelligence.nordman-tehau.workers.dev
q 70

DNS lookup: A/AAAA/MX/NS/TXT/CNAME/CAA records for a domain name

paid API x402
$2.02 · 30d 10 tx
Built-With-Productos-Voo8 built-with-productos-voo8.vercel.app
q 70

Current EVM block number with multi-RPC failover.

paid API x402
$3.37 · 30d 4 tx
Api api.crushrewards.dev
q 70

Marketing/competitive analysis query - $0.01 per request

paid API x402
$2.28 · 30d 142 tx
Natsecintel natsecintel.com
q 70

Experimental AI search snippet summary with citations. 0.05 real USDC on Base.

paid API x402
$1.62 · 30d 9 tx
Workberry-X402-Staging workberry-x402-staging.135-181-219-160.sslip.io
q 70

Immutable aggregate timestamp-coverage report with cutoff and reproducibility digest.

paid API x402
$1.01 · 30d 4 tx
Project-Zero-Agent-Api project-zero-agent-api.jordy-prods.workers.dev
q 70

Preflight untrusted text for common prompt-injection, credential-exfiltration, and tool-abuse patterns. Deterministic heuristic scan; not a guarantee of safety.

paid API x402
$0.00 · 30d 2 tx
Nanoapi nanoapi.org
q 70

Compress images to reduce file size with configurable quality. A photo compressed to quality 30 is typically 90-95% smaller with acceptable visual quality. Useful for reducing storage costs, optimizing web page load times, preparing image u…

paid API x402
Preflight-Agent preflight-agent.netlify.app
q 70

Read-only Solana financial-action firewall: decode and simulate an unsigned transaction, bind observed effects to declared intent and policy, and return a signed PASS/FAIL/REVIEW receipt

paid API x402
from $0.02
Api api.finnputerdex.com
q 70

FINNPUTER quick token check (contract, holders, market)

paid API x402
$0.02 · 30d 1 tx
Survivor-X402-Production survivor-x402-production.up.railway.app
q 70

Solana token risk screen with signed proof. Returns score 0-100, risk level, ALLOW/CHALLENGE/DENY gate decision, structured warnings, and an ed25519-signed receipt binding the payment settlement and result hash - independently verifiable at…

paid API x402
from $0.01
Stable-Enrich-Ecdu27Dk1-Merit-Systems stable-enrich-ecdu27dk1-merit-systems.vercel.app
q 70

Exa Search - Neural search across the web

paid API x402
$1338.07 · 30d 53,028 tx
Stable-Enrich-Git-Payai-Solana-Facilitator-Merit-Systems stable-enrich-git-payai-solana-facilitator-merit-systems.vercel.app
q 70

Exa Search - Neural search across the web

paid API x402
$1338.07 · 30d 53,028 tx
Solana-App-Production solana-app-production.up.railway.app
q 70

Solana token analytics: price, liquidity, volume, risk, organic score

paid API x402
from $0.0010
Stable-Enrich-Anncfzk3U-Merit-Systems stable-enrich-anncfzk3u-merit-systems.vercel.app
q 70

Exa Search - Neural search across the web

paid API x402
$1338.07 · 30d 53,028 tx
Penniless-Json-Repair penniless-json-repair.sjaman.workers.dev
q 70

Repairs malformed LLM JSON: strips Markdown fences and prose wrappers, fixes trailing commas, converts Python literals (True/False/None) and single/unquoted keys, removes comments, recovers balanced JSON from truncated output. Body {input} …

paid API x402
$0.10 · 30d 4 tx
Payai payai.43-135-4-66.sslip.io
q 70

Financial author track record / 财经作者历史成绩. Look up resolved stock-market claims, sample size, hit rate, Wilson confidence interval, direction breakdown, coverage and freshness for an X/Twitter finance creator. Useful for creator credibility …

paid API x402
$1.66 · 30d 17 tx
Metaclean-Production metaclean-production.up.railway.app
q 70

Buscar secretos y credenciales expuestas en hasta 10 textos o fragmentos de código, antes de compartirlos: claves de AWS/GitHub/Slack/Stripe/OpenAI/Anthropic/Google/SendGrid/npm, claves privadas PEM, cadenas de conexión con contraseña y JWT…

paid API x402
$0.04 · 30d 3 tx
X402-Hash-Api x402-hash-api.vercel.app
q 70

SHA-256 hash — compute a SHA-256 hex digest of a text string (sha256 hash / cryptographic hash).

paid API x402
$5.33 · 30d 13 tx
Safeconduct safeconduct.vercel.app
q 70

x402-protected paid API on safeconduct.vercel.app (discovered via Coinbase facilitator).

paid API x402
$0.06 · 30d 12 tx
Freepik freepik.x402.paysponge.com
q 70

Service: Freepik (https://freepik.x402.paysponge.com/v1/sound-effects)

paid API x402
$4.82 · 30d 271 tx
Bookproof-Api bookproof-api.sn95wjq846.chatgpt.site
q 70

Read-only Polymarket market health: resolves a full Polymarket URL, slug, token ID, or search phrase, then returns spread, 1/2/5 cent depth, imbalance, fee schedule, and book freshness.

paid API x402
from $0.0050