Diffgate

Compare two texts and get a unified diff with a similarity score (0-1), line-level additions/deletions, and individual change records. Useful for comparing LLM outputs, verifying content integrity, or tracking document changes.

Compare two texts and see exactly what changed.

Start the server

bash

uvicorn diffgate.app:app --port 8006

Compare texts

bash

curl -s -X POST http://localhost:8006/v1/diff \
  -H "Content-Type: application/json" \
  -d '{"text_a": "hello\nworld", "text_b": "hello\nearth"}' | jq

Returns similarity (1.0 = identical, 0.0 = completely different), additions, deletions, and changes (each with type add/delete and content).

Use cases

• Compare two LLM outputs to check consistency
• Verify a document hasn't been tampered with
• Track changes between skill versions
• Diff config files before and after an update