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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 335 AI 127 Finance 85 Verification 60 Blockchain 57 Other 22 Content 18 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 757–792 of 3,505
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.
Retrynet-Bazaar-Stage retrynet-bazaar-stage.jack-labs.workers.dev
70%

Returns safe, machine-readable repairs for failed MCP and API tool calls, including invalid arguments, missing fields, incorrect types and changed tool schemas.

paid API x402
from $0.01
Retrynet retrynet.jack-labs.workers.dev
70%

Returns safe, machine-readable repairs for failed MCP and API tool calls, including invalid arguments, missing fields, incorrect types and changed tool schemas.

paid API x402
from $0.01
Sflgc-212-251-189-49 sflgc-212-251-189-49.free.pinggy.net
70%

Buy the next Machine Relics Genesis ERC-721 on Base Sepolia. Use when an AI agent wants a verifiable machine-native collectible. Pay $0.01 test USDC over x402; the NFT is minted to the recipient wallet.

paid API x402
from $0.01
Agents agents.aiscale.pro
70%

AiScale Research Synthesizer: Deep research on any topic. Searches multiple sources and returns structured brief with findings, evidence, citations, and confidence scores.

paid API x402
from $0.00
Israel-Tariff-X402 israel-tariff-x402.onrender.com
70%

Israeli Customs Tariff Lookup. Look up structured Israeli customs tariff information for a known Israeli customs tariff code using normalized data sourced from the Israel Tax Authority. Use for Israel import research, customs duty or import…

paid API x402
from $0.00
Agent-Proof agent-proof.onrender.com
70%

Use before paying an unfamiliar x402 endpoint. Checks that the target is reachable, actually speaks x402, and what its historical reliability looks like, then returns a receipt with a safe_to_use or flagged verdict.

paid API x402
from $0.01
Machine-Relics-Api-Production machine-relics-api-production.up.railway.app
70%

Buy the next Machine Relics Genesis ERC-721 on Base Sepolia. Pay test USDC over x402; the NFT is minted exactly once per accepted payment signature.

paid API x402
from $0.01
Hejilopeuapjlaphqjky hejilopeuapjlaphqjky.supabase.co
70%

Compares and ranks supplier quotes by price, lead time, warranty, payment terms and mandatory-requirement eligibility.

paid API x402
from $0.05
Agent-Economy-Signal-X402-Test agent-economy-signal-x402-test.bronzetti-andrea.workers.dev
70%

AI agent market intelligence for autonomous agents. Detects emerging agent-economy opportunities across protocols, infrastructure, tooling and machine-to-machine commerce. Returns deterministic ACT_NOW, RESEARCH_NOW, MONITOR, DEPRIORITIZE o…

paid API x402
from $0.05
Kairostamp kairostamp.com
70%

Kairostamp evidence snapshot: server-side fetch of one public http/https URL, returning a time-stamped receipt with the response status, content type, byte length, SHA-256 of the body, redirect chain, a text preview, and a tamper-evident ha…

paid API x402
from $0.01
Staging staging.402utils.com
70%

Validate an EU VAT number against the official VIES registry before invoicing, onboarding or a reverse charge. Per-country syntax is checked locally first, so invalid formats never touch the network. Valid numbers return the registered comp…

paid API x402
$0.14 · 30d 60 tx
Organiccryptoyyc organiccryptoyyc.com
70%

Geolocate an IPv4 or IPv6 address: country, region, city, lat/long, timezone, ISP/ASN, and proxy flag.

paid API x402
$0.15 · 30d 1 tx
Api-Staging api-staging.you.com
70%

You.com Finance Research API: agentic deep research on a financial question, returning a synthesized answer with cited sources. Use when an agent needs well-reasoned market or company analysis for a trading or investment decision. JSON body…

paid API x402
from $0.01
Tollbooth-Fdic-Verify-Testnet tollbooth-fdic-verify-testnet.sjwilliams8.workers.dev
70%

Before your agent trusts, cites, or transacts with a U.S. bank: verify it is actually FDIC-insured, for $0.01, against the FDIC's own BankFind Suite records, synced daily. Look up by institution name (fuzzy, word-order-tolerant, confidence-…

paid API x402
from $0.01
Tollbooth-Sanctions-Screener-Testnet tollbooth-sanctions-screener-testnet.sjwilliams8.workers.dev
70%

Before your agent onboards, pays, or contracts with a counterparty: screen the name against the U.S. Treasury OFAC sanctions lists (SDN + Consolidated non-SDN, synced every 6h) for $0.01. Benchmarked 114/114 sanctioned names found with zero…

paid API x402
from $0.01
X402-Key x402-key.558686.xyz
70%

Verify the OpenAI-compatible base URL, model list contract, request shape, secret boundary, and next key-pack route before buying a URL + API key quota pack.

paid API x402
$4.70 · 30d 123 tx
Incorpsignal incorpsignal.com
70%

Fetch a compact agent-safe projection generated from live or cached Companies House data: UK incorporation trends, sector and SIC clusters, postcode hotspots, founder/director signals, persona opportunities, and action queues.

paid API x402
from $0.00
Specdelta-Kl4Hfo6J2Q-As specdelta-kl4hfo6j2q-as.a.run.app
70%

Detect breaking schema changes and permission expansion between two agent tool specifications.

paid API x402
$0.01 · 30d 1 tx
Agent-Fact-Receipts-Staging agent-fact-receipts-staging.131313122.workers.dev
70%

Get a sourced, versioned medical procedure price corridor with an Ed25519 evidence receipt.

paid API x402
from $0.01
Verdoc-X402 verdoc-x402.verdoc-x402-worker.workers.dev
70%

Deterministic analysis of a public GitHub repository. Returns layout, language breakdown, toolchain commands with their source manifest, test and CI presence, a 0-100 documentation-health score, and phantom_paths (file paths the README cite…

paid API x402
from $0.01
Api api.epanya.ai
70%

Schema-validated web search for AI agents. Multi-provider failover; no schema-valid result, no charge (settle-after-validation). TESTNET: Base Sepolia USDC only — amounts have no monetary value. Live stats with on-chain proofs: https://epan…

paid API x402
Pf-X402-Api-Testnet pf-x402-api-testnet.ahndohun1.workers.dev
70%

Search Korean news articles from Hankookilbo, a major Korean daily newspaper, with a natural-language Korean query. Returns matching article titles, URLs, publish times, and sections via the official Hankookilbo MCP server. Useful for Korea…

paid API x402
from $0.01
Bingo bingo.jinmo.top
70%

中国身份证号码查询(演示):根据 18 位中国居民身份证号码返回模拟身份信息(姓名、地区、出生日期、年龄、性别)。Chinese national ID card number lookup (demo): submit an 18-digit PRC ID number; returns simulated identity JSON. Price 0.001 USDT or USDC on Solana mainnet via x402.

paid API x402
$1.00 · 30d 1 tx
Venture-Foundry-Qa-Test venture-foundry-qa-test.jenvan.chatgpt.site
70%

Check agent deliverables for required sections, limits, placeholder or forbidden text, source minimums, citation wiring, and claim traceability.

paid API x402
from $0.52
Wallets-Demo-Seller-Server wallets-demo-seller-server.agent-payments-testing.workers.dev
70%

Real-time current weather conditions for a city or location, including temperature, humidity, precipitation, wind, and a human-readable condition.

paid API x402
from $0.00
Viql viql.upgo.ai
70%

Cited compliance eligibility verdict (checks[] + ledger provenance)

paid API x402
$0.80 · 30d 9 tx
Squeeze squeeze.lonestaroracle.xyz
70%

Short-squeeze setup signal for a stock (?ticker=<stock ticker>)

paid API x402
$10.10 · 30d 113 tx
App app.ravn.exchange
70%

RAVN cross-chain swap quote, incl. native Bitcoin as source or destination

paid API x402
$0.02 · 30d 5 tx
Orchard-Data orchard-data.letom1176.workers.dev
70%

Crypto fear & greed index (current + previous reading). JSON.

paid API x402
$0.00 · 30d 1 tx
Rest rest.coincap.io
70%

Full asset data for one or more slugs (agent-optimized).

paid API x402
from $0.00
Moltmarket moltmarket.store
70%

Financially verified marketplace metrics plus clearly labelled aggregate discovery signals

paid API x402
from $0.02
Llm-Fast llm-fast.hergertsynthora.com
70%

SYNTHORA LLM Gateway FAST: OpenAI-compatible /v1/chat/completions pay-per-call, no API keys. Fast free-tier models (llama-3.1-8b class) with automatic upstream failover, Ed25519-signed. 0.005 USDC via x402 on Base. POST {"messages":[{"role"…

paid API x402
$0.44 · 30d 98 tx
X402 x402.lucidcove.org
70%

Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.

paid API x402
$0.00 · 30d 1 tx
Trust-Agent trust-agent.io
70%

What is this agent's reputation actually worth? 92.6% of ERC-8004 feedback on Base is coordinated. This clusters reviewers by funding provenance and caps each cluster at one effective vote, returns every record with its evidence class and f…

paid API x402
$194.96 · 30d 4 tx
Api api.qist.info
70%

Compute zakat due on wealth: cash, gold, silver, business inventory, receivables, crypto and stocks, less deductible liabilities. Returns the nisab threshold under BOTH the gold (85g) and silver (595g) standards and flags when they disagree…

paid API x402
$0.88 · 30d 27 tx
Google-Patents google-patents.use.x402atlas.com
70%

Google Patents search — find patents by technology, inventor or assignee with date, country, legal-status and classification filters; clean JSON with titles, snippets, dates, owners, PDFs and patent IDs.

paid API x402
$1.27 · 30d 87 tx