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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 473 AI 226 Verification 141 Finance 115 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 2845–2880 of 4,738
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.
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
format.openverbs.com format.openverbs.com
q 65

Sniff which structured format an unknown document is. Because formats overlap, returns every plausible format with a 0–1 score plus the best guess — honest about ambiguity rather than pretending certainty.

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

Convert an amount from one currency to another using reference rates (latest or a historical date). Amount defaults to 1.

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

Cheapest entry point: one-call COT snapshot. Report dates, top 3 crowded-long and crowded-short markets by 52-week COT index, biggest week-over-week spec move, universe counts. From the same 438-market CFTC dataset as the premium endpoints.…

paid API x402
$0.15 · 30d 3 tx
bytemine.pay.zeroclick.io bytemine.pay.zeroclick.io
q 65

Read any company page in real time and return clean structured content, links, metadata, and the detected tech stack. Data is fetched live from the source.

paid API x402
$0.27 · 30d 27 tx
bitwise.openverbs.com bitwise.openverbs.com
q 65

Bitwise OR across two or more non-negative integers (given as decimal strings, evaluated as arbitrary-precision BigInt). Returns the result in decimal, hex and binary.

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

Return the antonyms (opposites) of an English word, aggregated across all its senses. Optionally filter by part of speech. An unknown word returns found:false with a 200.

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

Build a valid .ics document from event fields (summary, start/end, location, …).

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

Extract the heading outline from Markdown — depth, text and a unique GitHub-style anchor slug for each heading. Optionally limit to a maximum heading depth.

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

Summarise a text's difficulty as a single consensus US grade level (averaging the five grade formulas), plus the Flesch Reading Ease, a plain-language difficulty band and an approximate age range.

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

Jaro similarity and the Jaro-Winkler variant (which boosts scores for a shared prefix), both in [0,1]. The prefix boost factor is configurable (default 0.1, max 0.25). Well suited to short strings like names.

paid API x402
$19.91 · 30d 1,387 tx
x402.omardev.xyz x402.omardev.xyz
q 65

Extract structured metadata from any URL: page title, meta description, Open Graph and Twitter Card tags, canonical URL, favicons, language, generator and robots directives, plus RSS/Atom feed links. Give it a URL, get back clean SEO and so…

paid API x402
$0.01 · 30d 2 tx
finance.openverbs.com finance.openverbs.com
q 65

Grow a principal by simple or compound interest over a number of years. Compound interest uses compoundsPerYear compounding periods (default 12, monthly).

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

Compute sunrise, sunset, solar noon and day length for a latitude/longitude (east-positive) and date, using the NOAA sunrise equation. All times are UTC ISO-8601. Locations in polar day or night return null rise/set with a `polar` flag — a …

paid API x402
$19.91 · 30d 1,387 tx
tuski.pay.zeroclick.io tuski.pay.zeroclick.io
q 65

Create an email validation job from a JSON list of addresses or CSV text (send exactly one). Poll its status, then fetch results as JSON or CSV. Billing counts only testable addresses, fixed at creation; unreachable, disposable and typo dom…

paid API x402
checksum.openverbs.com checksum.openverbs.com
q 65

CRC-16 over the input payload in one of several standard variants (ccitt-false, xmodem, modbus, ibm; default ccitt-false). Returns the checksum as an unsigned integer and 4-digit hex. Non-cryptographic.

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

Split an identifier or phrase into words and render it in every common case — camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Title Case and Sentence case. Handles acronyms (HTMLParser → html parser).

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

Compute the RFC 6902 JSON Patch that transforms `source` into `target`. The patch is a minimal array of add/remove/replace operations.

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

Search the periodic table by name or symbol substring. Exact matches rank first, then prefix matches, then substring matches. Returns up to `limit` elements (default 20) plus the total match count.

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

Validate a BIC/SWIFT code and decompose it into bank, country, location and branch codes.

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

Compute a keyed HMAC of some data with a secret key — the standard way to sign and verify webhooks (Stripe, GitHub, etc.) and API requests. Data and key may each be utf8/hex/base64/base64url; the tag is returned as hex/base64/base64url.

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

Generate a random Luhn-valid TEST card number for the given network (default Visa). For testing only — these are not issued cards and cannot be charged. The response is always flagged `test:true`.

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

Validate an email address — syntax, MX/A deliverability lookup, and disposable / role-based address detection. No mailbox probing.

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

Start the "💡 Indeed Jobs Scraper" Apify actor (valig/indeed-jobs-scraper). $0.1/1K jobs | Scrape job listings, salaries, and company details from Indeed with customizable search filters and structured output.

paid API x402
$1.57 · 30d 94 tx