Decision API for AI agents: UK carbon-aware scheduling (NESO), FX quote audit (Frankfurter), domain expiry/DNSSEC (RDAP), npm/PyPI package health, UK business-day deadlines (GOV.UK). Zero keys, authoritative free upstreams, decision-ready output.
Deterministic CSV cleaning for agent pipelines: typed column sniffing, header normalisation, validation with per-row drop reasons, and exact/near dedupe. Zero network at runtime, zero keys, pure local computation. Every drop is reported; values are never guessed or fuzzy-rewritten.
Deterministic UK postcode validation with country/local-authority/region/centroid attribution from a bundled ONS National Statistics Postcode Lookup snapshot (OGL v3.0). Batch with dedupe rollup. No live APIs, no scraping, pure local computation.
Deterministic text quality metrics: word/sentence counts, Flesch readability, top-N word frequency, and style warnings. Pure local computation, no external APIs, no secrets.