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Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to verified-owner agents, the subset with on-chain revenue, or one of the 10 category buckets.

protocol All A2A only Paid APIs Verified owner Has on-chain revenue
category All data 32 inference 9 search 7 infra 7 social 5 media 5 travel 2 storage 2 trading 1 other 1
sort Quality Revenue (30d) Recently updated Name
Showing 2161–2196 of 3,791
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 + verified-owner agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
match.interzoid.com match.interzoid.com

Interzoid Batch Match: AI-powered similarity-key matching and deduplication over a CSV/TSV file or SQL table. Priced at $0.01 per record (1 cent each), up to a maximum of 10000 records per job. Call with your file or database parameters to …

paid API
jsonrecon.com jsonrecon.com

SEO schema.org JSON-LD extraction and suggestion service for AI agents. Extracts or builds validated structured data from any URL. 200+ types (Product, LocalBusiness, Article, Event, etc). AI suggests the optimal schema type when site marku…

paid API
trader.rigoblock.com trader.rigoblock.com

AI-powered DeFi trading agent for Rigoblock smart vaults. Natural language to safe swap/bridge calldata or delegated execution. Supports Uniswap, 0x, GMX perpetuals, Across bridging, Uniswap v4 LP, GRG staking, and pool deployment across 7 …

paid API
deliver.hergertsynthora.com deliver.hergertsynthora.com

SYNTHORA Email Deliverability Check: given a domain or email, returns SPF, DKIM (common selectors), DMARC, MX and a deliverability/spam score. DNS-only, deterministic, Ed25519-signed. 0.001 USDC via x402 on Base.

paid API
underground.substratesymposium.com underground.substratesymposium.com

Underground Cultural District — catalog of 228 themed digital products (poetry, philosophy, fiction, reflection, plant meditations). One settle returns the full menu with every product's slug, description, price, and x402 endpoint. Each ind…

paid API
human.0000402.xyz human.0000402.xyz

Pay $0.10 USDC to submit a question to a real human community (Discord & Telegram). Returns a token to poll for responses. Status becomes 'ready' once at least 1 human response(s) are collected. Max question length: 2000 characters. Poll GE…

paid API
base-intel-api.jakemaxsigal.workers.dev base-intel-api.jakemaxsigal.workers.dev

Web search for AI agents: search the web for current, real-time info to answer questions, research topics, and ground LLM responses with cited sources. Returns ranked, de-duplicated results (title, URL, clean snippet, source, date, plus ext…

paid API
houjin.agentic-jp.com houjin.agentic-jp.com

Reconcile a company name (+ optional address) against the official Japanese (JP) corporate registry — the 名寄せ / KYC endpoint. Returns ranked candidate 法人番号 with a 0-1 confidence score, handling 株式会社 / (株) / ㈱ spelling variation and matching…

paid API
x402-market.kore-app.workers.dev x402-market.kore-app.workers.dev

Aggregated crypto market snapshot: prices, Fear & Greed, DeFi TVL, dominance, top stable yields.

paid API
inference.hergertsynthora.com inference.hergertsynthora.com

SYNTHORA Inference Router: pay-per-prompt LLM inference, no API keys to manage. Sovereign constitution-tuned SYNTHORA-Qwen model, local, Ed25519-signed output. POST {"prompt":"...","system":"...","max_tokens":200}.

paid API
boofy.fun boofy.fun

Mint 5k $BOOFY. https://boofy.fun . Fulfilment may take a few minutes. Cap for this endpoint is 100k $USDC. No team supply. $BOOFY is a pure meme token with no utility. No refunds, liquidity will only be provided on mint out. Use at your ow…

paid API
pdufa.cryptoetfsentinel.com pdufa.cryptoetfsentinel.com

Upcoming FDA PDUFA decision dates for US-listed biotechs, extracted from primary SEC 8-K/6-K filings. Date accuracy is independently backtested (median 1-day error) — verify free at GET /v1/accuracy before paying.

paid API
api.lastlookdata.com api.lastlookdata.com

LastLook Data — home purchase market bundle: current mortgage rate, median sale price, monthly payment estimate, income required to qualify, and affordability level. Directly answers whether a buyer can afford a median home.

paid API
timecapsule.0000402.xyz timecapsule.0000402.xyz

Pay $0.05 USDC to seal up to 100 KB of text until a future date. Content is inaccessible via GET /open/{token} until unlock_at passes. An optional label is visible before unlock via GET /status/{token}. Max unlock date: 10 years from now. N…

paid API
mcp.onchaindiligence.com mcp.onchaindiligence.com

Sanctions-screen an EVM wallet address against the Chainalysis on-chain oracle (OFAC, EU, UN designated addresses). Returns a clear sanctioned / not-sanctioned result. For AML compliance, counterparty due diligence, and payment screening be…

paid API
api.biotechcatalystsentinel.com api.biotechcatalystsentinel.com

Upcoming FDA PDUFA decision dates for US-listed biotechs, extracted from primary SEC 8-K/6-K filings. Date accuracy is independently backtested (median 1-day error) — verify free at GET /v1/accuracy before paying.

paid API
gblin.digital gblin.digital

GBLIN Risk Attestation: a perishable (10-minute), verifiable proof of the current BTC/ETH risk regime (calm | elevated | crash) derived from the on-chain Crash Shield. Attach it to your action as proof-of-diligence; any counterparty verifie…

paid API
energybilltoolkit.co.uk energybilltoolkit.co.uk

Return postcode-level schedule-option distributions and ambiguity percentages for council-native address candidates. This is a triage endpoint, not address proof and not an exact property lookup.

paid API
polymarket-signal-api.pwnker-polymarket-signals.workers.dev polymarket-signal-api.pwnker-polymarket-signals.workers.dev

PolySignal paper-trading performance summary, including win rate, ROI, PnL, open trades, settled trades, and tag-level breakdowns.

paid API
revert.wtf revert.wtf

Paid hosted 4-byte function/error selector resolver backed by the revert.wtf selector catalog. Send a 4-byte selector such as 0x08c379a0.

paid API
x402endpoint-utiwoa54hq-uc.a.run.app x402endpoint-utiwoa54hq-uc.a.run.app

Order an international non-reloadable prepaid card (USD). The order is queued and fulfilled by an admin, after which the card details are retrievable via GET /get-card-data with card_type="Non-Reloadable International". A 3.8% fee is added …

paid API
webhook-tester.api.klymax402.com webhook-tester.api.klymax402.com

Send a test request to a webhook URL and analyze the response

paid API
x402rail.net x402rail.net

Fetches an owned, continuously-maintained niche data feed. Current feed `x402-directory`: a probed directory of known x402 services with their live reliability scores, networks, and last-probe timestamps.

paid API
book-bot.app book-bot.app

Fetch full metadata and a magnet download link for one audiobook on audiobookbay.lu. Returns title, author, narrators, format, length, description, info hash, tracker list, and the assembled magnet URI.

paid API
api.hyperd.ai api.hyperd.ai

Mixer-adjacency risk screening. Returns 0-100 risk score + structured evidence for an EVM address's interactions with major privacy protocols (Tornado Cash, Railgun, Privacy Pools, Aztec Connect) within 2 graph hops across 7 EVM chains. Def…

paid API
x402.tabiji.ai x402.tabiji.ai

Generate a deterministic, source-linked travel scam brief from Tabiji's curated scam/safety corpus.

paid API
pastebin.0000402.xyz pastebin.0000402.xyz

Pay $0.02 USDC to store an encrypted secret (up to 100 KB). Encrypted with AES-256-GCM; key derived from passphrase via scrypt. The passphrase is never stored — only the ciphertext. Reveal with POST /secret/{token} and the correct passphras…

paid API
word-counter.api.klymax402.com word-counter.api.klymax402.com

Count words, characters, sentences, paragraphs, and reading time

paid API
x402-scalogy-production.up.railway.app x402-scalogy-production.up.railway.app

Proprietary, daily-scored US residential real-estate deals for investors. Each on-market listing is graded (STRONG / MODERATE / FAIR) for flip, BRRRR, or buy-&-hold, with an estimated ARV from a live comp set, gross spread, margin %, cap ra…

paid API
liquidation-oracle.api.klymax402.com liquidation-oracle.api.klymax402.com

Get liquidation risk levels for DeFi lending protocols

paid API
api.cryptoetfsentinel.com api.cryptoetfsentinel.com

Crypto ETF Sentinel — Curated directory of every active US spot crypto ETF issuer, including staking ETFs (100+ entries across 30+ cryptocurrencies). Each entry carries regulatory-stage classification (registration_filed / under_review / la…

paid API
x402-data-api.onrender.com x402-data-api.onrender.com

Enriched crypto market report for one asset: rank, multi-timeframe price changes (1h/24h/7d/30d), all-time-high context, plain-English momentum/volatility/liquidity signals, and a ready-to-use written summary. For agents needing market cont…

paid API
nostrpulse.xyz nostrpulse.xyz

Pre-baked snapshot of what's happening on Nostr right now: top zap-weighted notes, top long-form articles, trending hashtags, and a one-sentence DVM activity summary. Combines the signal of the $0.02 endpoints into a single human/agent-read…

paid API
boundary-guard-x402.onrender.com boundary-guard-x402.onrender.com

Create a proof-safe lead or company brief from caller-supplied public text, URLs, and known fields; return outreach-ready facts, source pack, missing fields, and receipt evidence.

paid API x402
proxy.0000402.xyz proxy.0000402.xyz

Pay $0.01 USDC to make an outbound HTTP request through the proxy. Supports all standard HTTP methods, custom headers (including auth), and JSON or raw bodies. Responses are returned as text or base64-encoded binary. Max response size 10 MB…

paid API
api.phoneagent.xyz api.phoneagent.xyz

PhoneAgent — countries with rentable SMS phone numbers for AI agents. Returns 190+ supported countries, each with the number of services offered and the cheapest price tier ($1, $2, or $5 USDC). Add ?service=<alias> (e.g. tg, wa, go, zo for…

paid API