HTTP-first Franc-all API for Workers

Detect language at scale with a fast, privacy-friendly API.

Francis powers Verbatims with franc-all on Cloudflare Workers. Ship language detection in milliseconds with API keys, usage tracking, and a modern console.

180+ languages
Worker-native
Usage caps ready
POST /api/v1/detect200 OK
{ "text": "Les sanglots longs des violons" }
          
languagefra
confidence0.81
alternativesfra • cat • spa

Key management

Generate, revoke, and rotate API keys in one place. Built for multi-project usage.

Usage controls

Daily limits, usage summaries, and pricing-ready tables for future billing integrations.

Workers performance

HTTP-first endpoints optimized for Worker-to-Worker calls and edge latency.

API quickstart

francis.verbatims.cc

Headers

x-api-key: fcs_************************

Request

POST /api/v1/detect
{ "text": "Hello from Verbatims" }