A2A earnings → wallet ranking, coverage and attribution
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.
Why this order?
regex.openverbs.com
Split the input into parts on each match of a RE2 pattern. An optional limit caps the number of parts (0 = unlimited). Returns the parts array and its count.
encoding.openverbs.com
Decode a base64 byte buffer from one character set and re-encode it into another (utf-8, utf-16le, utf-16be, latin1, ascii). Characters that the target set cannot represent, or bytes invalid for the source set, are clean 400s.
ip.openverbs.com
Compute network details of a CIDR block — network & broadcast address, usable host range, total and usable address counts. Works for IPv4 and IPv6 (counts returned as strings for large IPv6 blocks). Honours RFC 3021 for /31.
dns.openverbs.com
Resolve DNS records for a hostname — A, AAAA, CNAME, MX, TXT, NS, SOA, CAA or SRV. NXDOMAIN or an absent record type returns an empty record set.
deomath.org
Evaluate whether a mathematical research branch should continue, revise, abstain, or escalate.
jtifhcvbgxqwlywugvjv.supabase.co
Check any wallet balance across 5 EVM chains. Returns native or ERC-20 balance with threshold check, block height, and on-chain receipt. Supports Base, Ethereum, Arbitrum, Optimism, and Polygon.
color.openverbs.com
Generate a harmony scheme (complementary, analogous, triadic, tetradic, monochromatic) from a base color.
checkdigit.openverbs.com
Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length selects the scheme.
vat.openverbs.com
Validate a French VAT (TVA) number against the official company register. Validity means the SIREN exists and the company is administratively active.
pack.openverbs.com
Decode a MessagePack or CBOR byte stream (supplied as a base64/base64url/hex string) back into a JSON value. A malformed envelope, malformed bytes, or a value that is not JSON-representable is rejected before payment.
geospatial.openverbs.com
Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including the Norway/Svalbard zone exceptions. Defined for latitudes -80..84.
wallet.openverbs.com
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…
rdap.openverbs.com
Look up a domain's RDAP registration data — registrar, status, creation/expiry/update dates, nameservers and DNSSEC. Unregistered domains return found:false.
math.openverbs.com
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.
datetime.openverbs.com
Return the ordinal day of the year (1..366), the number of days in that year and whether it is a leap year.
holidays.openverbs.com
List a country's holidays for a calendar year (optionally by state/region, language and type).
geocode.openverbs.com
Convert a free-form address or place name into ranked coordinates with a structured, normalized address. Optionally bias by country and language.
timecode.openverbs.com
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 …
spreadsheet.openverbs.com
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.
attest.tollkit.dev
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 …
effectguard-x402-experiment.onrender.com
Coordinate agents sharing one account: reuse matching JSON reads within 30 seconds, or stop duplicate operations using a stable business event ID. Enroll once at /v1/enroll, then authenticate paid calls with your Bearer key. After EXECUTE u…
fortune.fulinlabs.com
Random fortune — fixed price, x402 exact
x402-datashop-production.up.railway.app
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.
api.aitrailblazer.net
Top stressed crypto issuers from the current DeltaSignal slice.
api.ibancheck.co.uk
Validate an IBAN before you send money. Returns valid/invalid, ISO 13616 Modulo-97 checksum, country, length and BBAN-format checks, bank code, SEPA reachability and clear error reasons. Deterministic, no account or API key. Input: {"iban":…
x402.deepsearch.com
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.
oyapicks.app
OyaPicks: recently resolved prediction markets and their winning outcome
x402.wach.ai
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 …
x-data-gateway.annushka1190.workers.dev
Cheap end-to-end x402 test. Returns { ok: true, ts }. GET /v1/health/paid
crawlspur.halowerk.com
Prüft am Objekt news-dokument den Befund ausgelieferten Inhaltstyp.
email-verify-api-production-d262.up.railway.app
Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.
market.datapackvibe.com
Combat bark generator: Create short contextual combat barks for a named role or faction.
mcpfax-intel.bowling-anthony.workers.dev
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…
agentproof-murex.vercel.app
JSON repair for AI agents - fix malformed JSON and return structured output.
api.carbon-cashmere.de
Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.
slug.openverbs.com
Convert text into a URL-safe slug: transliterate accents, apply a locale character map, and join with a separator.