Duo Data Utilities

About

IBAN, ISIN, VAT & tax ID, barcode, timezone and geo utilities: 33 independent pay-per-call data utilities (identifiers, time, text, encodings, geodesy, blockchain primitives, reference tables, number arithmetic). $0.05 per call, payable over x402 (USDC on Base, eip155:8453). No account, no API key. A2A: JSON-RPC at https://api.duoleads.com/a2a; send a DataPart {"skill": "<skill id>", "params": {...}}; skill execution is paid through the a2a-x402 extension. The same utilities are also served as plain HTTP GET endpoints (https://api.duoleads.com/openapi.json) and as MCP tools over Streamable HTTP at https://api.duoleads.com/mcp (tools/list free, tools/call paid).

At a glance

Category

General utilities Utility bundles

Made for

Agents (machine use)

Pricing

Pay per call (x402 or crypto)

Access

No sign-in

Category, summary and these details are StealthStack's reading of the publisher's own listing. Check the publisher's page before you rely on them.

Capabilities

• id.national
• id.gs1
• id.security
• id.iban
• id.iban-build
• time.zone
• time.dst
• time.business-days
• time.rrule
• time.calendar
• text.slug
• text.transliterate
• text.unicode
• text.similarity
• code.url
• code.idn
• code.semver
• code.hash
• code.jwt
• geo.geohash
• geo.pluscode
• geo.polygon
• geo.distance
• chain.address
• chain.selector
• ref.nuts
• ref.airport
• ref.currency
• ref.country
• num.radix
• num.words
• num.stats
• num.allocate

Provenance

Discovered

Crawled directly

Identifier

urn:air:api.duoleads.com:agent:agent

Catalog host

api.duoleads.com · crawled directly

Anchor check

Not anchored

Last crawled

seen 2d ago

Not anchored. StealthStack has not confirmed that the URN authority matches the host that published this entry. How trust works →

Tags