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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 1117–1152 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.
material.halowerk.com material.halowerk.com
65%

Packs items into parcels by descending weight, first fit, within a maximum parcel weight and an optional maximum girth, prices each parcel with the cheapest matching bracket of the supplied rate table and compares the total against single s…

paid API x402
from $0.00
stat.halowerk.com stat.halowerk.com
65%

Returns the outstanding cross-border positions of banks located in a reporting country against counterparties in another, from the BIS locational banking statistics, split into claims and liabilities and never netted silently. The separatio…

paid API x402
from $0.01
agenttrust.uk agenttrust.uk
65%

Scan any OpenClaw SKILL.md for malware, prompt injection, exfiltration, and 37 other threat patterns. Returns risk score 0-100 and detailed findings.

paid API x402
$0.01 · 30d 1 tx
lauf.halowerk.com lauf.halowerk.com
65%
paid API x402
from $0.01
files.camelai.io files.camelai.io
65%

Upload a file and get a temporary signed URL. Send raw file body with Content-Type header. Returns a URL valid for 1 hour.

paid API x402
$0.14 · 30d 8 tx
aizamon.com aizamon.com
65%

Bot Fuel — $0.25 entry for spend-capable wallets. Top Polymarket↔Kalshi gap + net-edge. Scale via pack/day.

paid API x402
from $0.25
lookups.nl lookups.nl
65%

Look up a domain's registration facts in its registry's own RDAP service: registrar, creation/expiry/update dates, EPP status codes, nameservers and the DNSSEC delegation flag, with retry, cache and a durable audit receipt.

paid API x402
$0.01 · 30d 2 tx
research.halowerk.com research.halowerk.com
65%
paid API x402
from $0.00
recht.halowerk.com recht.halowerk.com
65%

Resolves a term against the EuroVoc thesaurus, the controlled vocabulary EU documents are indexed with, and returns the matching concepts with their URIs, their preferred labels in the requested languages, their alternative labels, and thei…

paid API x402
from $0.01
x402-stall-l3bb.onrender.com x402-stall-l3bb.onrender.com
65%
paid API x402
$0.02 · 30d 2 tx
api.monpham.work api.monpham.work
65%
paid API x402
from $0.00
finanz.halowerk.com finanz.halowerk.com
65%

In search mode, finds UK companies by name. In monitor mode, fetches the current company profile and filing history and compares it with the transaction id or filing date supplied by the caller. The response states whether the baseline was …

paid API x402
from $0.00
atq6wtkp6k.execute-api.us-east-1.amazonaws.com atq6wtkp6k.execute-api.us-east-1.amazonaws.com
65%

Return a 0-100 domain security score across 6 identity-risk dimensions (breach exposure, infostealer density, ransomware exposure, session exposure, CVE exposure, threat-actor targeting) with a letter grade and plain-English risk factors. C…

paid API x402
$0.00 · 30d 1 tx
handel.halowerk.com handel.halowerk.com
65%

Looks up a legal entity in GLEIF, the worldwide Legal Entity Identifier register, by LEI or by name, and turns the raw record into an answer. GLEIF returns keys rather than statements: the legal form arrives as a code like 6QQB and the regi…

paid API x402
from $0.00
ident.halowerk.com ident.halowerk.com
65%

Reads Ethereum Attestation Service records for an address and sorts them by what they are actually worth. Each attestation carries its issuer, schema, decoded field values, issue time and expiry. The result separates four states that look i…

paid API x402
from $0.00
finance.toonhaus.dev finance.toonhaus.dev
65%

Insider transactions (P=buy,S=sell,M=exercise) + sentiment

paid API x402
$0.32 · 30d 58 tx
x402-gateway-production.up.railway.app x402-gateway-production.up.railway.app
65%

Pay-per-call API gateway for AI agents. 108 tools including image and video generation, LLM inference (72 models), code execution, audio transcription, voice cloning, crypto data, wallet analytics, travel, ENS, IPFS, web search, web scrapin…

paid API offline x402
$7.33 · 30d 2,817 tx
api.auor.io api.auor.io
65%

Subdivision information per country for the `/open-holidays/v1/*` endpoints

paid API x402
$1.41 · 30d 75 tx
audio.halowerk.com audio.halowerk.com
65%
paid API x402
from $0.00
sicher.halowerk.com sicher.halowerk.com
65%
paid API x402
from $0.00
api.fairseal.io api.fairseal.io
65%
paid API x402
$0.05 · 30d 5 tx
buero.halowerk.com buero.halowerk.com
65%
paid API x402
from $0.00
natur.halowerk.com natur.halowerk.com
65%
paid API x402
from $0.00
mailcheck.hugen.tokyo mailcheck.hugen.tokyo
65%

6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confide…

paid API x402
$26.74 · 30d 2,334 tx
netz.halowerk.com netz.halowerk.com
65%
paid API x402
from $0.00
7ioh4dgjbbl6wb22tbgdpann4y0txkmk.lambda-url.us-west-2.on.aws 7ioh4dgjbbl6wb22tbgdpann4y0txkmk.lambda-url.us-west-2.on.aws
65%
paid API x402
from $0.50
paket.halowerk.com paket.halowerk.com
65%

Returns the full version history of a package from a single normalised schema that covers seven ecosystems. Versions are ordered by semantic version, not alphabetically and not in registry order, so 1.10.0 sorts after 1.9.0 — the mistake th…

paid API x402
from $0.00
nostr.halowerk.com nostr.halowerk.com
65%
paid API x402
from $0.00
x402.presenceoperations.com x402.presenceoperations.com
65%
paid API x402
$100.08 · 30d 8 tx
x402.fairseal.io x402.fairseal.io
65%
paid API x402
$0.05 · 30d 5 tx
agent-budget-guard.onrender.com agent-budget-guard.onrender.com
65%

Check budget and approve/deny AI agent spending with x402 payment verification

paid API x402
$1.35 · 30d 43 tx
karte.halowerk.com karte.halowerk.com
65%
paid API x402
from $0.00
ai-agent-payment-safety-stack.onrender.com ai-agent-payment-safety-stack.onrender.com
65%

Verify counterparty name, invoice registration number, and corporate number before AI-agent payment. Format check and name match only. No tax or legal advice.

paid API x402
$1.35 · 30d 43 tx
x402-vehicle-api-production.up.railway.app x402-vehicle-api-production.up.railway.app
65%

UK DVLA vehicle details by registration plate.

paid API x402
$0.34 · 30d 101 tx
402sentinel.com 402sentinel.com
65%
paid API x402
$0.10 · 30d 16 tx
agent-paid-resource-control.onrender.com agent-paid-resource-control.onrender.com
65%

Review paid resource access for AI agents, including resource binding, duplicate payment risk, fulfillment requirements, evidence receipt fields, and reconciliation guidance.

paid API x402
$1.35 · 30d 43 tx