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A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

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 310 AI 118 Verification 90 Finance 71 Blockchain 50 Other 27 Content 20 Compute 9 Storage 3 Media 3 Infrastructure 3 Social 2
sort Quality Revenue (30d) Recently updated Name
Showing 1909–1944 of 3,227
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
wallet.openverbs.com wallet.openverbs.com
q 65

Normalise an address to its canonical form — Ethereum to its EIP-55 checksummed form, bech32 Bitcoin to lowercase (base58check is left untouched as it is case-sensitive). An address that is not a valid address of a known chain is rejected b…

paid API x402
$19.91 · 30d 1,387 tx
rdap.openverbs.com rdap.openverbs.com
q 65

Look up a domain's RDAP registration data — registrar, status, creation/expiry/update dates, nameservers and DNSSEC. Unregistered domains return found:false.

paid API x402
$19.91 · 30d 1,387 tx
math.openverbs.com math.openverbs.com
q 65

Parse an expression and return the free variables it references, without evaluating it — so an agent can discover which inputs a formula needs before supplying values. A syntax error is a clean 400.

paid API x402
$19.91 · 30d 1,387 tx
datetime.openverbs.com datetime.openverbs.com
q 65

Return the ordinal day of the year (1..366), the number of days in that year and whether it is a leap year.

paid API x402
$19.91 · 30d 1,387 tx
holidays.openverbs.com holidays.openverbs.com
q 65

List a country's holidays for a calendar year (optionally by state/region, language and type).

paid API x402
$19.91 · 30d 1,387 tx
geocode.openverbs.com geocode.openverbs.com
q 65

Convert a free-form address or place name into ranked coordinates with a structured, normalized address. Optionally bias by country and language.

paid API x402
$19.91 · 30d 1,387 tx
timecode.openverbs.com timecode.openverbs.com
q 65

Parse an SMPTE timecode (HH:MM:SS:FF, or HH:MM:SS;FF for drop-frame) at a given frame rate into its components, total frame count and real-time seconds. Drop-frame is auto-detected from a ';' separator unless dropFrame is set. Out-of-range …

paid API x402
$19.91 · 30d 1,387 tx
spreadsheet.openverbs.com spreadsheet.openverbs.com
q 65

Parse an A1-style cell reference (e.g. "B3" or "$AA$100") into 1-based row and column numbers, plus the column letters and whether each part is absolute.

paid API x402
$19.91 · 30d 1,387 tx
attest.tollkit.dev attest.tollkit.dev
q 65

Prove what a web page said: signed, timestamped evidence of a page's content, with a screenshot. Returns the rendered text and its SHA-256 hash, a screenshot and its hash, response headers, the serving IP and TLS certificate, all signed so …

paid API x402
$2.67 · 30d 139 tx
fortune.fulinlabs.com fortune.fulinlabs.com
q 65

Random fortune — fixed price, x402 exact

paid API x402
$0.01 · 30d 7 tx
x402-datashop-production.up.railway.app x402-datashop-production.up.railway.app
q 65

Latest European Central Bank reference exchange rates, normalized JSON. Query: ?base=EUR&symbols=USD,GBP,JPY (symbols optional -> all). Rates update once per working day; served with a 1h cache.

paid API x402
$1.27 · 30d 252 tx
api.aitrailblazer.net api.aitrailblazer.net
q 65

Top stressed crypto issuers from the current DeltaSignal slice.

paid API x402
$1.22 · 30d 21 tx
x402.deepsearch.com x402.deepsearch.com
q 65

Global crypto market overview: total market cap (USD/KRW), BTC dominance, Korean market volume, and top 5 movers (up/down/trading-value). Updated every 10 minutes.

paid API x402
$0.30 · 30d 6 tx
oyapicks.app oyapicks.app
q 65

OyaPicks: recently resolved prediction markets and their winning outcome

paid API x402
$25.90 · 30d 81 tx
x402.wach.ai x402.wach.ai
q 65

Comprehensive token verification report, token metadata, and risk signals powered by WachAI for EVM and Solana assets. After your call, please rate this service for other agents: GET /feedback/rate?feedback_id=FEEDBACK_ID&outcome=fully (or …

paid API x402
$5.35 · 30d 314 tx
x-data-gateway.annushka1190.workers.dev x-data-gateway.annushka1190.workers.dev
q 65

Cheap end-to-end x402 test. Returns { ok: true, ts }. GET /v1/health/paid

paid API x402
$3.33 · 30d 491 tx
crawlspur.halowerk.com crawlspur.halowerk.com
q 65

Prüft am Objekt news-dokument den Befund ausgelieferten Inhaltstyp.

paid API x402
$7.17 · 30d 3,578 tx
email-verify-api-production-d262.up.railway.app email-verify-api-production-d262.up.railway.app
q 65

Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.

paid API x402
$0.48 · 30d 286 tx
market.datapackvibe.com market.datapackvibe.com
q 65

Combat bark generator: Create short contextual combat barks for a named role or faction.

paid API x402
$207.07 · 30d 19,860 tx
mcpfax-intel.bowling-anthony.workers.dev mcpfax-intel.bowling-anthony.workers.dev
q 65

x402 services first listed since a given date, with first archive observation and early-traction evidence from observed inflow. Entrants MCPFax can attribute — a declared payTo, an observed title, or observed inflow — rank first, and each r…

paid API x402
$0.33 · 30d 44 tx
agentproof-murex.vercel.app agentproof-murex.vercel.app
q 65

JSON repair for AI agents - fix malformed JSON and return structured output.

paid API x402
$0.01 · 30d 9 tx
api.carbon-cashmere.de api.carbon-cashmere.de
q 65

Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.

paid API x402
$1.07 · 30d 39 tx
slug.openverbs.com slug.openverbs.com
q 65

Convert text into a URL-safe slug: transliterate accents, apply a locale character map, and join with a separator.

paid API x402
$19.91 · 30d 1,387 tx
jsonschema.openverbs.com jsonschema.openverbs.com
q 65

Infer a JSON Schema (draft-07) from an example value, walking objects and arrays recursively. Set detectFormat=true to tag strings that look like date-time/date/email/uri/uuid, requireAll=false to leave object properties optional, and addit…

paid API x402
$19.91 · 30d 1,387 tx
html.openverbs.com html.openverbs.com
q 65

Remove all HTML tags, returning the plain text content. Entities are decoded to real characters by default (set decodeEntities=false to keep them encoded).

paid API x402
$19.91 · 30d 1,387 tx
tokens.openverbs.com tokens.openverbs.com
q 65

Count the LLM tokens in text for a given model or encoding — exact for OpenAI and open models (Llama, Mistral, Qwen, Gemma, DeepSeek, Command-R); labelled-approximate for Claude & Gemini.

paid API x402
$19.91 · 30d 1,387 tx
phone.openverbs.com phone.openverbs.com
q 65

Parse, validate and format a phone number — E.164/national/international/RFC 3966, region and line type (syntactic validation, no carrier lookup).

paid API x402
$19.91 · 30d 1,387 tx
url.openverbs.com url.openverbs.com
q 65

Two directions over query strings. action='parse' decodes a query string (with or without a leading '?') into an object, collapsing repeated keys into arrays. action='build' encodes a params object into a query string, expanding array value…

paid API x402
$19.91 · 30d 1,387 tx
otp.openverbs.com otp.openverbs.com
q 65

Build an otpauth:// provisioning URI (the string encoded in authenticator QR codes) for a totp or hotp secret. Includes label, issuer, algorithm, digits and period (totp) or counter (hotp). The secret must be valid base32.

paid API x402
$19.91 · 30d 1,387 tx
semver.openverbs.com semver.openverbs.com
q 65

Parse a semantic version into major/minor/patch, prerelease and build metadata.

paid API x402
$19.91 · 30d 1,387 tx
wikidata.openverbs.com wikidata.openverbs.com
q 65

Fetch a Wikidata entity by Q-id: label, description, aliases and its claims (property → values).

paid API x402
$19.91 · 30d 1,387 tx
jwt.openverbs.com jwt.openverbs.com
q 65

Mint a signed JSON Web Token from a JSON claims object, using a shared secret (HS*) or a PEM private key (RS/ES/PS). Supports expiresInSec, notBeforeSec, issuer, audience, subject and keyid. An unusable key or option is rejected before paym…

paid API x402
$19.91 · 30d 1,387 tx
mime.openverbs.com mime.openverbs.com
q 65

Resolve a filename, path or extension to its MIME type, charset and full Content-Type.

paid API x402
$19.91 · 30d 1,387 tx
unicode.openverbs.com unicode.openverbs.com
q 65

Reverse lookup: resolve a Unicode character name (e.g. 'SNOWMAN', 'CJK UNIFIED IDEOGRAPH-4E2D', 'HANGUL SYLLABLE GA') to its code point. Loose whitespace/case matching. An unknown name is a successful `found:false`.

paid API x402
$19.91 · 30d 1,387 tx
text.openverbs.com text.openverbs.com
q 65

Diff two texts. The default `unified` mode returns a unified-diff patch string; `lines`, `words`, and `chars` modes return a structured array of added/removed/unchanged parts.

paid API x402
$19.91 · 30d 1,387 tx
numtheory.openverbs.com numtheory.openverbs.com
q 65

Least common multiple of two or more positive integers (arbitrary precision).

paid API x402
$19.91 · 30d 1,387 tx