IBANforge – Free IBAN/BIC validation API with compliance data
Issuer classification detects Wise and Revolut vIBANs when basic validators only check checksums.

Pay-per-request IBAN validation with crypto when IBAN.com charges $9,500/year for the same data.
Fintech developers, payment system builders, AI agents handling transactions
IBAN.com · ValidationAPI · Abstract API
Issuer classification detects Wise and Revolut vIBANs when basic validators only check checksums.
Converted SWIFT's prose rules to executable Python when MyStandards is clunky.
Validates live Firestore docs against schema when other tools only generate types.
Fixes WHOIS's broken successor: one endpoint, consistent schema, handles multi-server routing automatically.
Real survey data grounding beats generic LLM personas for market research validation.
Deterministic fallback order (ENV → .env → vault) plus an opt-in validation mode and a strict CI-friendly option is a practical combo I wish I'd had in several projects. The doctor CLI that lists found keys and minimal provider probes (e.g., GET /v1/models for OpenAI) is a nice touch — useful for catching bad tokens before a pipeline runs. It’s not reinventing secret managers, but the zero-deps, stdlib-only approach and CI strictness make it an immediately usable tool for small teams.