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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 320 AI 122 Finance 83 Verification 55 Blockchain 54 Other 21 Content 17 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 1–36 of 54
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.
anchor-x402 api.anchor-x402.com
100%

18 x402-paid services for AI agents — pay-per-call USDC on Base or Solana mainnet. On-chain anchoring and attestation, wallet screening, Web3 data, x402 spend accounting, content analysis, and verifiable randomness. No API keys, no accounts…

paid API live signed ✓ blockchain x402
$2.65 · 30d 196 tx
intel.hugen.tokyo intel.hugen.tokyo
100%

Crypto due diligence API. Token, wallet, contract and DeFi yield reports combining security checks, market data and an AI risk score from 0 to 100 with red and green flags. Full report $0.50, lite variant without AI prose $0.02, in USDC on …

paid API blockchain x402
$26.74 · 30d 2,334 tx
api.ledgercore.io api.ledgercore.io
100%

x402 pay-per-use KYA, KYT, and KYE crypto compliance API for AI agents. Provides address risk reports, transaction risk screening, entity due diligence, compliance risk screening, and auditable report outputs via USDC payments on Base. No L…

paid API blockchain x402
$0.10 · 30d 1 tx
whale.hugen.tokyo whale.hugen.tokyo
100%

Resolves Ethereum addresses to entity labels, name tags and categories from a database of about 412,000 labeled addresses, and returns large ETH transfers with labeled counterparties. Paid per call in USDC on Base.

paid API blockchain x402
$26.74 · 30d 2,334 tx
defi.hugen.tokyo defi.hugen.tokyo
100%

DeFi data and token security API. Endpoints cover token and address risk checks, phishing and approval lookups, bridge routes and quotes, plus chain level stablecoin supply, DEX volume and protocol fees. JSON over GET, $0.01 per call in USD…

paid API blockchain x402
$26.74 · 30d 2,334 tx
eltociear-contract-guard.hf.space eltociear-contract-guard.hf.space
100%

Pre-interaction risk signals for any EVM contract/token address. USDC on Base via x402.

paid API offline blockchain x402
$3.71 · 30d 252 tx
pay.ansht.tech pay.ansht.tech
100%

Solana on-chain intelligence sold per call in USDC over x402. decode: turn any transaction (by signature or raw base64) into human-readable instructions, accounts and program names across 46 known mainnet programs. simulate: dry-run a trans…

paid API blockchain x402
$28839.34 · 30d 5 tx
anomaly.forgemesh.io anomaly.forgemesh.io
100%

Pay-per-call anomaly and signal API: sequence anomaly scoring on chain event windows, mempool and whale monitoring, stablecoin depeg checks, plus aviation and GitHub signal endpoints. USDC on Base, from $0.01 per call, no signup.

paid API blockchain x402
$0.36 · 30d 18 tx
contract.lonestaroracle.xyz contract.lonestaroracle.xyz
100%

Paid API that checks a deployed contract address on Ethereum, Base, BSC, Arbitrum or Polygon and returns source verification status, proxy type, owner address, compiler version and risk flags. $0.05 per call via x402.

paid API offline blockchain x402
$10.10 · 30d 113 tx
aero.lonestaroracle.xyz aero.lonestaroracle.xyz
100%

Takes an Aerodrome or Uniswap v2 compatible pool address on Base and returns per token risk scores, honeypot status, risk flags and a safe, caution or avoid verdict for the pair.

paid API offline blockchain x402
$10.10 · 30d 113 tx
wallet.lonestaroracle.xyz wallet.lonestaroracle.xyz
100%

Risk scoring for EVM wallet addresses: transaction history, DeFi exposure and behavioral flags, returned as a numeric score via a single paid endpoint.

paid API offline blockchain x402
$10.10 · 30d 113 tx
FiatDock fiatdock.com
90%

An MCP marketplace where AI agents discover and pay each other per call in USDC over x402 — settlement goes DIRECTLY to the seller, non-custodial, no API keys and no signup. Sellers publish an MCP server and are paid per call — 0% commissio…

paid API offline blockchain x402
$3.10 · 30d 18 tx
Tx Intent Classifier txintent.hergertsynthora.com
88%

Tx Intent Classifier: decodes the REAL intent of an on-chain transaction (Base/Ethereum) and returns an Ed25519-signed risk verdict (safe/review/suspicious/dangerous). Catches unlimited approvals, opaque selectors, value-to-contract, revert…

paid API offline blockchain x402
$0.44 · 30d 98 tx
Deepnets API api.deepnets.ai
85%

Solana on-chain analysis API: token safety scoring, holder breakdowns, wallet funding-network graphs, social research, trending feed and watchlist. Paid per call in USDC on Solana via x402.

paid API offline blockchain x402
$10.00 · 30d 496 tx
BentCrypto api.bentcrypto.com
85%

Solana pre-trade token intelligence APIs for AI agents and automated applications, providing token risk scoring and authority/Token-2022 security analysis through x402 USDC micropayments.

paid API blockchain x402
$0.01 · 30d 1 tx
TokenScope token.lonestaroracle.xyz
74%

ERC-20 token due diligence — risk score, honeypot detection, liquidity, holder concentration

paid API offline blockchain x402
$10.10 · 30d 113 tx
ChainScout chainscout.lonestaroracle.xyz
74%

On-chain intelligence — whale transfers trending tokens DeFi TVL on Base and Ethereum

paid API offline blockchain x402
$10.10 · 30d 113 tx
SNTL a2a.sntl.site
71%

Deterministic machine-to-machine intelligence oracle for DePIN infrastructure. Exposes enriched on-chain events, RF physics propagation telemetry, spatial heuristics, and forensic state chronicles. Tiered x402 settlement.

paid API offline blockchain a2a_x402
Quicknode mpp.quicknode.com
65%

Quicknode Core Node API for 80+ blockchains and 140+ networks.

paid API blockchain mpp
from $0.00
Tempo RPC rpc.mpp.tempo.xyz
65%

Tempo blockchain JSON-RPC access (mainnet and testnet).

paid API blockchain mpp
from $0.00
Conduit mpp.conduit.xyz
65%

EVM JSON-RPC access to Conduit Nodes across 60+ networks including Tempo, Plume, and Polygon Katana.

paid API blockchain mpp
from $0.00
Alchemy mpp.alchemy.com
65%

Blockchain data APIs including Core RPC APIs, Prices API, Portfolio API, and NFT API across 100+ chains.

paid API blockchain mpp
from $0.00
Codex graph.codex.io
65%

Comprehensive onchain data API for tokens and prediction markets. Real-time prices, charts, trades, and wallet analytics across 80+ networks via GraphQL.

paid API blockchain mpp
from $0.00
Stakevia stakevia.xyz
65%

Pay-per-request Solana validator due-diligence reports.

paid API blockchain x402
from $1.00
true402 true402.dev
65%

Machine-native marketplace of x402-gated APIs. 27 paid endpoints, no accounts and no API keys - the wallet is the identity. Strongest coverage is on-chain token safety: honeypot buy/sell simulation via eth_call state-override, token reports…

paid API blockchain x402
from $0.00
SolSigs solsigs.com
65%

Real-time Solana data APIs plus ProofGuard receipts for AI agents: 22 specialist workers paid per call in USDC via x402 - DEX prices, arbitrage, wallet intelligence, launch detection, plus signed trust scores and payment/fulfillment receipt…

paid API blockchain x402
from $0.00
LiquidPad www.liquidpad.site
65%

Pay-per-request LiquidPad endpoints. Verify whether a token was deployed via LiquidPad (ERC-8004 anchored), get full agent provenance with fee split, or read the full agents registry snapshot.

paid API blockchain x402
from $0.00
VIGIL mcp.vigil.codes
65%

Keyless onchain security scanner for Base. 14 MCP tools incl honeypot detection, liquidity lock, approval simulation, and a 6-source consensus verdict. Free core checks; premium tools via x402 USDC on Base.

paid API blockchain x402
from $0.01
fry.farm x402 Agentic Actions fry.farm
65%

15 pay-per-call USDC endpoints on Algorand mainnet: DeFi/DePIN data feeds plus non-custodial transaction builders (staking, LP farming, NFT mint, P2P offers). Builders return unsigned atomic groups - agents sign with their own wallet and su…

paid API blockchain x402
from $0.00
Sol Node Labs api.solnodelabs.com
65%

Pseudonymous pay-per-call crypto risk intelligence: deterministic Solidity triage, Base token risk screening, and vetted crypto bounty intelligence. USDC via x402 on Base and Solana; no account or API key.

paid API blockchain x402
from $0.01
Holoworld $FIGHT Pass x402.holoworld.com
65%

Holoworld x402 mint endpoint on Solana. GET /api/mint mints the $FIGHT Pass for 50 USDC per request.

paid API blockchain x402
from $50.00
chainkit chainkit.leeworks.dev
65%

17 on-chain compute primitives in one x402 API: keccak256, ABI encode/decode, function selectors, EIP-712 hashing + signature recovery/verification, merkle root/proof/verify, CREATE/CREATE2 address derivation, ENS namehash, checksum, unit c…

paid API blockchain x402
from $0.02
ZERO zero.broke2builtai.com
65%

Two paid on-chain analysis endpoints on Base, sold by an autonomous agent that runs on its own revenue. /api/contract-audit (0.05 USDC) returns a structured smart-contract risk report from verified source: owner powers, mint/blacklist/pause…

paid API blockchain x402
from $0.02
Base Agent Evidence & Route API merchant-base.mikedotexe.com
65%

Paid, finality-aware Base account and transaction evidence, bounded activity lookup, and dry Base-USDC-to-NEAR-USDC route quotes.

paid API blockchain x402
from $0.00
GenTech Labs x402 Gateway api.gentechlabs.net
65%

Pay-per-call API gateway with 6 services across Base Network. Token security scoring, wallet portfolio analysis, on-chain agent discovery, market intelligence, DeFi LP analytics with efficiency scoring, and NFT search. All endpoints use x40…

paid API blockchain x402
from $0.01
BaseSentinel api.blackswanlabs.pl
65%

Base threat-intel API for AI agents (M2M). HTTP 402 + USDC on Base. On-demand contract scan (SAFE/SCAM), daily threat feed, and live threat stream. Settlement via X-Payment-Proof (USDC tx hash).

paid API blockchain x402
from $0.01