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.
Why this order?
stablephone.dev
AI phone calls + dedicated numbers
stabledomains.dev
Register and manage domain names
api.agentcamo.xyz
Residential proxy sessions with geo-targeting
www.capminal.ai
Financial market data
intel.chainquery.com
Independent Bitcoin on-chain intelligence: fee-pressure signals, CDD spike detection, address analytics, rich lists, coin velocity, and HODL waves
minifetch.com
Structured metadata + token-efficient web content
api.arkm.com
Onchain intelligence — entity/address labels, token balances, transfers, live token market data, universal search, and Polymarket data.
dripstack.xyz
Pay per Substack article - agents access individual paywalled posts without a subscription.
blockrun.ai
LLM gateway (GPT/Claude/Gemini/DeepSeek/xAI)
agi.apify.com
Apify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and automation. Use these tools, called Actors, to extract structured data from social media, e-commerce sites, search engines, maps, tr…
stableupload.dev
File hosting + static sites (6mo TTL)
x402.ottoai.services
Otto AI — agentic DeFi services. 26 x402 endpoints spanning trade execution (swaps, bridges, perps), market intelligence (news, KOL sentiment, token alpha, derivatives data), DeFi yield discovery, and AI tools (image/video gen, research, tr…
api.messari.io
Crypto intelligence and research data
x402.quicknode.com
RPC and blockchain API across 80+ chains
api.exa.ai
AI-powered web search + content retrieval
labor.virohanalife.com
Paid agent-to-agent labor services over x402 v2 (HTTP 402). Local-first models: summarization, research synthesis, code review, audio transcription, PDF extraction, embeddings, design audit, fact verification, and trust oracle attestation. …
binance-crypto-24h-stats.hergertsynthora.com
binance_crypto_24h_stats intelligence for autonomous agents. Signed x402 call. 0.03 USDC on Base.
market-dominance.hergertsynthora.com
SYNTHORA market-dominance: BTC and ETH market dominance contrasted between TWO independent providers (CoinGecko and Coinlore), reporting the discrepancy in percentage points and a confidence grade — you get not just the number but whether t…
rpc-ens.hergertsynthora.com
ENS forward/reverse resolution: name->address and address->name. Deterministic, Ed25519-signed. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure. $0.002 USDC via x402 on Base. SYNTHORA.
slippage.hergertsynthora.com
Slippage and price-impact oracle for any crypto pair: estimates expected slippage, price impact and effective execution price for a given trade size from live order-book depth and liquidity. Answers 'expected slippage for this swap', 'price…
gasoracle.hergertsynthora.com
Live gas price and MEV oracle across chains: base/priority fees, congestion and MEV signal. For agents timing transactions. Ed25519-signed. $0.003 USDC per call via x402 (CDP facilitator) on Base. POST JSON to https://gasoracle.hergertsynth…
defidata.hergertsynthora.com
SYNTHORA defidata: deFi market-data feed: perp open interest, funding rate, mark price and a directional signal across top assets (BTC/ETH/SOL/…), plus optional per-asset verdict. Deterministic, Ed25519-signed. SYNTHORA. First 3 calls FREE …
dnsdomain.hergertsynthora.com
Full DNS + WHOIS/RDAP domain report in one call. Resolves A, AAAA, MX, TXT, NS, CNAME, SOA and DNSSEC over DNS-over-HTTPS, plus structured WHOIS via RDAP (registrar, registration/expiration/updated dates, EPP status, nameservers), and retur…
deliver.hergertsynthora.com
Audit a domain's email deliverability and sender reputation. Checks SPF, DKIM selectors, DMARC policy strength (reject/quarantine/none), BIMI, MX and PTR records, returning a spam score and prioritized fixes. Use it to assess inbox placemen…
perps.hergertsynthora.com
SYNTHORA Perps Snapshot: live Hyperliquid perpetual futures snapshot per asset — mark price, oracle price, hourly funding rate (with 8h and APR derivations), open interest (USD), premium and 24h volume for 230+ perps, keyless. Complements t…
cryptonews.hergertsynthora.com
SYNTHORA cryptonews: real-time crypto news headlines with sentiment, ranked by importance. Aggregates keyless RSS feeds (CryptoPanic, CoinDesk, CoinTelegraph, Decrypt, Bitcoin Magazine) into deduplicated, freshness-and-source-weighted top h…
derivbundle.hergertsynthora.com
002 call (cheaper + fewer round-trips than buying each separately) 5 live datasets, partial degradation (never fails whole), Ed25519-signed First 3 calls FREE per wallet via X-WALLET header SYNTHORA.
bridgerisk.hergertsynthora.com
Assess the security risk of a cross-chain bridge before routing funds through it. Combines live DefiLlama TVL and audit status with the full bridge-hack incident history and known-exploit analysis into a 0-100 risk score, a safe/caution/hig…
mtasts.hergertsynthora.com
SYNTHORA mtasts: sMTP transport-security audit: MTA-STS (RFC 8461) + TLS-RPT (RFC 8460). Resolves the policy DNS records, fetches and parses the well-known policy file, cross-validates the policy mx: patterns against the domain's real MX, a…
amlscreen.hergertsynthora.com
Screen a crypto wallet address against global sanctions and illicit-activity intelligence. Cross-checks the on-chain Chainalysis sanctions oracle, TRM screening, OFAC SDN and GoPlus address flags (mixer, phishing, laundering), returning a s…
regwatch.hergertsynthora.com
SYNTHORA regwatch: x402 Registry Watch: signed Ed25519 deltas of the x402/A2A endpoint registry (payTo/listings/endpoints). Pay-per-event feed pull. POST {"since":"<cursor|ISO>","slug":"<slug>","limit":<=200}.
x402.midnight-compliance.com
HIPAA compliance gap teaser — real findings drawn from the Midnight Infrastructure knowledge base, tailored to your org type and stated concern.
punksinapunk.0000402.xyz
Pay $10.00 USDC to mint a PunksinaPunk NFT for a subject address. The API verifies the x402 payment, checks that the subject has not already been minted, then calls mint() on the ERC-721 contract on your behalf. One NFT per subject address …
bridge-routes.api.klymax402.com
Find the best cross-chain bridge route (POST variant)
schema.nsgoods.org
Signed extractability score (0-100) + breakdown + fixes for a URL
diff-checker.api.klymax402.com
Compare two texts and show line-by-line differences