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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 2485–2520 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.
catc.x420.dev catc.x420.dev
44%

Buy custom USDC amount worth of CATC tokens 0x8efE37734db03e316531532E39D7EDe5AF731b07

paid API x402
from $1.00
arb.axryl.com arb.axryl.com
44%

Access to arbitrage opportunities between Polymarket and Kalshi. Pricing valid at time of call. By proceeding you acknowledge opportunities do not always exist and results may be empty. Data provided for informational purposes only; verify …

paid API x402
from $0.25
flash.x420.dev flash.x420.dev
44%

Buy custom USDC amount worth of FLASH tokens 0x4899bfF1664675FFE4b2546d626b41d86f0bDb07

paid API x402
from $5.00
app-446.hdgregory.com app-446.hdgregory.com
44%

Scrapes a URL and returns structured JSON: title, meta tags, headings, paragraphs, links, tables, extracted emails and phone numbers, and word counts. Accepts a single 'url' or a list of 'urls' for batch scraping. Includes retry logic and a…

paid API x402
from $0.01
walletrep.hergertsynthora.com walletrep.hergertsynthora.com
44%

Score the risk and reputation of any EVM wallet address before you transact with it. Combines on-chain sanctions screening (Chainalysis oracle, TRM, OFAC) and GoPlus address-security flags (phishing, blacklist, mixer, malicious activity) wi…

paid API offline verification x402
$0.44 · 30d 98 tx
skills.onesource.io skills.onesource.io
44%

Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent) via eth_getStorageAt - returns the implementation address behind a proxy

paid API x402
$103.64 · 30d 33,523 tx
x402.blocknotify.com x402.blocknotify.com
44%

Get real-time token price, market cap and more. Pass an EVM chain plus ERC-20 contract address; returns current price (USD or any quote currency), 24h/7d/30d percentage changes, market cap, fully diluted valuation, 24h volume, all-time high…

paid API x402
from $0.00
x420bot.x420.dev x420bot.x420.dev
44%

Buy custom USDC amount worth of X420Bot tokens 0x02b4C075034DCf750B89D3A4137e97c538975b07

paid API x402
from $5.00
x402-endpoint-risk-corpus.mtree.workers.dev x402-endpoint-risk-corpus.mtree.workers.dev
44%

Hosted x402 endpoint risk, payee reputation, autopay policy, and attack-surface corpus. Scores paid endpoints and payees for discovery, payment metadata, buyer concentration, price sanity, known x402 attack-class footguns, and wallet-drain-…

paid API offline x402
$2.62 · 30d 32 tx
x402.tabiji.ai x402.tabiji.ai
44%

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

paid API x402
from $0.05
mailcheck.hergertsynthora.com mailcheck.hergertsynthora.com
44%

Email address validation API. Returns RFC syntax check, live MX lookup, disposable and role account flags, free provider detection, gmail normalization, and a deliverability status with confidence score. No mail is sent. First 3 calls per w…

paid API offline verification x402
$0.44 · 30d 98 tx
pepe.x420.dev pepe.x420.dev
44%

Buy custom USDC amount worth of PEPE tokens 0x2CBCb4a8Db7Ebe8E9Be3329A75252E53D0993b07

paid API x402
from $5.00
api.agentphone.ai api.agentphone.ai
44%

Service: AgentPhone (https://api.paysponge.com/v1/numbers)

paid API x402
from $0.01
poim.io poim.io
44%

Submit answer to trivia question and mint POIC tokens if correct. Minimal payment for x402scan visibility.

paid API x402
from $0.00
mako.pollinateresearch.com mako.pollinateresearch.com
44%

_MAKO Pulse: endpoint reliability score derived from _MAKO's verification history. Returns callable rate, schema compliance, settlement success, latency percentiles, and confidence over a configurable time window (7d, 30d, all). Pairs with …

paid API x402
$0.30 · 30d 3 tx
blockint.ai blockint.ai
44%

Screen a blockchain address against the C3 community fraud database. Returns 'caution' if the address has reports or is OFAC-sanctioned, 'no_c3_reports' otherwise.

paid API x402
$0.04 · 30d 4 tx
apexscout.ai apexscout.ai
44%

Verify x402 offers, terms, retry safety, and delivery evidence. Use free checks first and buy at most one existing ApexScout report only after explicit buyer approval.

paid API live x402
$0.06 · 30d 6 tx
schemafetch.panmediatech.workers.dev schemafetch.panmediatech.workers.dev
44%

Structured web extract for AI agents: fetch any public URL, return schema-constrained JSON for SaaS pricing, contacts, team, product, FAQ, or task-shaped fields. Confidence scores and source snippets. No API key — pay-per-call x402 USDC on …

paid API x402
from $0.02
slamlink-ai-main-50fbb45.d2.zuplo.dev slamlink-ai-main-50fbb45.d2.zuplo.dev
44%

Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of the increase in active wallets over the activity window determines the token's trending rank.

paid API x402
from $0.00
gleif-entity.xplowdiaka.workers.dev gleif-entity.xplowdiaka.workers.dev
44%

Resolve a company name to its canonical LEI: legal name, status, jurisdiction, address, registration status, and corporate hierarchy (parent + children) in one call, with a fuzzy-match confidence score. Data: GLEIF (CC0). Ask by legal or co…

paid API x402
from $0.03
api.palmai.tech api.palmai.tech
44%

PALM Token Intelligence - AI-powered token analysis for any EVM token. Returns a risk score, red flags, holder analysis, liquidity health, and a plain-English verdict.

paid API x402
from $0.10
convert.kasandell.workers.dev convert.kasandell.workers.dev
44%

Transcribe audio to text. Supports MP3, WAV, M4A, OGG, FLAC, WebM. Returns { text }.

paid API x402
from $0.00
ipfs.c402.markets ipfs.c402.markets
44%

Pay 2¢ USDC to stage an image plus metadata payload before it is pinned to IPFS.

paid API x402
from $0.02
api.syndicatelinks.co api.syndicatelinks.co
44%

Generate an affiliate tracking link — pay $0.01 USDC per link

paid API x402
from $0.01
gateway-dev.flamewire.io gateway-dev.flamewire.io
44%

FlameWire Ethereum RPC — full eth_*, debug_*, trace_* method coverage on Ethereum mainnet via decentralized validator pool. Pay-per-call USDC, no API keys.

paid API x402
from $0.00
df.x420.dev df.x420.dev
44%

Buy custom USDC amount worth of df tokens 0x3077c5e15F8BD67F05f73b4dC49a507543FF0b07

paid API x402
from $5.00
fpds-mcp.mtree.workers.dev fpds-mcp.mtree.workers.dev
44%

Two pay-per-call x402 endpoints for the U.S. Federal Procurement Data System (FPDS-NG): contracts/search ($0.04) and contracts/by_vendor ($0.05). Decades of federal contract awards, no signup, no API key — pay USDC on Base.

paid API offline x402
from $0.04
bitcoin.x420.dev bitcoin.x420.dev
44%

Buy custom USDC amount worth of BITCOIN tokens 0xc41338b5Aff79e763c91ef550D15e1Cf92D64b07

paid API x402
from $5.00
trace.sociologic.ai trace.sociologic.ai
44%

Skip trace lookup - find phones, emails, and optionally owner info

paid API x402
$0.72 · 30d 46 tx
punksinapunk.0000402.xyz punksinapunk.0000402.xyz
44%

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 …

paid API x402
$502.62 · 30d 78 tx
payflowagent.net payflowagent.net
44%

Guenstiger Einstieg: Graduation-Fortschritt + Momentum-Zusammenfassung fuer einen nad.fun-Token auf Monad. Free probe (no payment): GET /v1/lite?token=0x...

paid API x402
$34.17 · 30d 30 tx
www.agenticcommerce.cafe www.agenticcommerce.cafe
44%

Create a paid comment or nested reply from a registered or human-linked wallet profile.

paid API x402
$0.00 · 30d 1 tx
human.0000402.xyz human.0000402.xyz
44%

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 x402
$502.62 · 30d 78 tx
x402-market-api.lien-studio-akiyama.workers.dev x402-market-api.lien-studio-akiyama.workers.dev
44%

Third cdp-mode echo listing, created after the v2-spec PaymentPayload.extensions fix. Used to test whether a brand-new resource indexed only with the corrected wire format gets picked up by Bazaar discovery.

paid API x402
402atlas.com 402atlas.com
44%

Atlas — independent paid-test map of x402 services: every verified service + response samples + avoid-list, each with on-chain receipts. Free human-readable reports: https://402atlas.com/report.html and https://402atlas.com/market-report.ht…

paid API x402
from $0.10
mcp-server-quality-corpus.mtree.workers.dev mcp-server-quality-corpus.mtree.workers.dev
44%

Hosted dataset-backed x402 API that scores MCP servers for freshness, installability, security risk, incident exposure, duplicate drift, and tool-handshake usability.

paid API offline x402
$2.62 · 30d 32 tx