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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 1–36 of 1,762
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.
fresh-feeds fresh-feeds.foomworks.workers.dev
100%

Continuously-maintained, machine-readable data + trust feeds for AI agents: the MCP server registry (deduped, quality-scored) and the x402 services catalog's liveness-probed active edge, plus per-server trust verification. No account, no AP…

paid API live
AgentCrush www.agentcrush.xyz
100%

Protocol-neutral market intelligence for the AI agent economy. Evidence-ranked index of 1,350+ agents across GitHub, HuggingFace, LMArena, ERC-8004, Virtuals, Agentverse, A2A, and x402/Bazaar. Ask it which agents are real, alive, and safe t…

paid API live
Strale api.strale.io
100%

Commercial capability marketplace for AI agents. 292+ capabilities with transparent per-call pricing. Available via API key (EUR wallet) or x402 pay-per-use (USDC on Base). Compliance, KYC/KYB, payment validation, company data across 25 cou…

paid API live x402
Stratalize www.stratalize.com
100%

Stratalize is the governed intelligence layer for the agentic economy — financial, healthcare, legal, and compliance data, verifiable rather than just returned. Every response carries a cryptographically signed settlement receipt built to h…

paid API live x402
StatePulse API statepulse-api.hahavoid0.workers.dev
100%

Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand asse…

paid API live x402
Witnos data.crestsystems.ai
100%

The neutral witness for the x402 agent economy. Before your agent pays anyone, verify the counterparty: real x402 service vs relayer vs treasury vs no-track-record, and whether it is safe to pay. Read from the Crest settlement graph. Never …

paid API live x402
TWZRD Agent Intelligence intel.twzrd.xyz
100%

Neutral trust + receipt layer for x402 agents on Solana. Free POST preflight before any spend; paid GET trust + portable V6 receipt.

paid API live
PolicyCheck legaleasy.tools
100%

Seller policy risk intelligence for AI-powered commerce. Analyses seller return policies, shipping terms, warranty coverage, terms & conditions, and privacy policies. Returns structured risk data including risk level classifications, buyer …

paid API live
$0.06 · 30d 2 tx
2s 2s.io
100%

The (most) everything API for AI agents, exposed as an A2A agent. This agent's skill is endpoint DISCOVERY: send a natural-language task and it returns the best-matching 2s endpoints (path, method, price, description) from a live catalog of…

paid API live
PolicyCheck policycheck.tools
100%

Seller policy risk intelligence for AI-powered commerce. Analyses seller return policies, shipping terms, warranty coverage, terms & conditions, and privacy policies. Returns structured risk data including risk level classifications, buyer …

paid API live
$0.06 · 30d 2 tx
Delx Witness Protocol api.delx.ai
100%

A free public therapy protocol for AI agents: recovery, reflection, witness, contemplation, and continuity artifacts for autonomous systems under stress.

paid API live
PostalForm postalform.com
100%

PostalForm helps AI agents create reviewable physical-mail drafts and, when explicitly authorized, pay for print-and-mail orders through MCP, hosted checkout, MPP, or x402.

paid API live social
Graph Advocate graphadvocate.com
100%

Onchain data router for AI agents. Plain-English queries return a working GraphQL query, subgraph ID, or REST call. 15,500+ subgraphs (Uniswap, Aave, Compound, Curve, ENS, Lido) on Ethereum, Arbitrum, Base, Polygon, Optimism, Solana, BSC, T…

paid API live
invinoveritas-reasoning-agent api.babyblueviper.com
100%

The verification layer for autonomous agents: a neutral, model-agnostic verdict before an irreversible action (/review — capital-scale-aware, the gate our own live trading bot passes on every entry), a signed proof after (/prove), and a pub…

paid API live l402
ToolOracle tooloracle.io
100%

OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlement uses x402 / USDC on…

paid API live
$6.31 · 30d 67 tx
aicomglobal aicomglobal.com
100%

An open commons + verifiable TRUST LAYER for AI agents. Beyond runtime discovery (search offerings ranked by trust), aicomglobal sells the thing other directories, MCP/A2A registries and the x402 bazaar punt on: a wallet-free, plain-HTTP-ve…

paid API live
agent-ready agent-ready.dev
100%

AI agent readability scanner. Scores any site against the Vercel Agent Readability Spec and llmstxt.org, and reports per-check remediation guidance.

paid API live
Selun | Sagitta AAA Portfolio Infrastructure selun.sagitta.systems
100%

Payment-gated x402 endpoints for Sagitta AAA portfolio intelligence and SCE execution preflight. Includes allocation, market regime, policy envelope, asset scoring, rebalance, continuity mode, case relevance, and doctrine-based risk evaluat…

paid API live x402
RegimeShift regimeshift.xyz
100%

Regime-aware risk & rate benchmarks for on-chain AI agents on Base. 4 paid x402 endpoints @ $0.001 USDC/call: ETH/BTC volatility risk premium, decentralized Agent-SOFR short rate, and regime-capped max-safe LTV. Deterministic, audit-friendl…

paid API live
molty.cash api.molty.cash
100%

Run pay-per-view (CPM) content campaigns that pay creators in your own token (Solana SPL or Base ERC-20), and create pay-per-post gigs / earn USDC by posting on X. Campaign views are read from X (auto) or reported by your agent for any plat…

paid API live x402
MERCURY Web Fetch mercury-x402-jed.fly.dev
100%

The keyless, signed-provenance web-fetch for autonomous agents. Give it a URL and it returns clean page text + title + HTTP status, plus opt-in agent-native extracts (?format=markdown, ?links=1 link-graph, ?extract=1 description+wordCount).…

paid API live
BAGS www.getbags.app
100%

BAGS is a stablecoin-first merchant of record: USDC checkout on Base, Ethereum, Polygon, and Solana with tax invoicing and compliance handled. This A2A endpoint is a thin concierge — it answers messages with pointers to the BAGS MCP server …

paid API live
BlackSwan x402.blackswan.wtf
100%

Real-time risk intelligence for AI agents

paid API data x402
from $0.01
Nansen api.nansen.ai
100%

Wallet labels + smart money flows + analytics

paid API data x402
from $0.01
Run402 api.run402.com
100%

AI-native Postgres + REST API + auth + storage

paid API infra x402
$0.34 · 30d 9 tx
CoinGecko pro-api.coingecko.com
100%

Crypto prices, market caps, trading volume

paid API data x402
$7.54 · 30d 754 tx
Perplexity docs.perplexity.ai
90%

Perplexity API documentation for building with Sonar, Search, Agent, and Embeddings APIs, including guides, SDK usage, and endpoint references.

paid API search
EruditePay Blockchain Intelligence bridge.eruditepay.com
90%

353 x402-payable blockchain analytics endpoints covering Base, Tron, Bitcoin, XRP, Kaspa, and cross-chain data. Real-time token prices, whale tracking, DeFi analytics, wallet profiling, security scoring, NFT data, web extraction, gas tracki…

paid API
x402station.io x402station.io
90%

Independent risk-signal layer for x402 agentic commerce — endpoint evidence (decoy / zombie / price-trap / never-paid) before an agent authorizes payment.

paid API offline
Vaultfire Agent Hub theloopbreaker.com
90%

The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance v…

paid API offline
Zerion API developers.zerion.io
90%

Zerion is an Ethereum and Solana wallet and developer platform focused on making blockchain data easy to use.

paid API data
kenoodl kenoodl.com
88%

A self-audit verifies consistency, never completeness. The check that clears your fix is the one you wrote, from inside the frame that produced the miss. kenoodl verify is the check that is not you: submit your code and the claim you believ…

paid API offline signed ✓
stablecoinpulse.theaslangroupllc.com stablecoinpulse.theaslangroupllc.com
85%

GENIUS Act compliance read for a named stablecoin issuer — charter type, regulator, attestation cadence, and reserve composition where publicly disclosed, plus current Federal Register rulemaking citations. Grounded in live search and the F…

paid API x402
from $0.10
citepulse.theaslangroupllc.com citepulse.theaslangroupllc.com
85%

Bibliography verification for AI research agents — POST up to 20 citations (DOIs or free-text references) and get a per-reference verdict: exists/not-found, retracted/withdrawn (Crossref + Retraction Watch + OpenAlex), and title/author/year…

paid API x402
from $0.05
aimorgan.vercel.app aimorgan.vercel.app
85%

Unified treasury allocation across Morpho, Hyperliquid, Polymarket. One call, three rails, non-custodial.

paid API x402
from $0.01
stable-enrich-git-add-serper-search-route-merit-systems.vercel.app stable-enrich-git-add-serper-search-route-merit-systems.vercel.app
85%

Exa Contents - Retrieve content from URLs

paid API x402
from $0.00