APIs › Kurdish, Arabic & Text Utilities › Text Diff

Text Diff

Produces line, word or character diffs with unified-diff output and a similarity ratio.

POST /v1/text/diff $0.005 per call

Specification

Endpoint

POST /v1/text/diff

Price

$0.005 per call · tier basic_data

Payment

x402 on X Layer (chain 196) · settled in USDG or USDT0 · schemes exact, aggr_deferred

Data source

Deterministic local computation on caller-supplied text

Timeout

15 seconds

Max request

1 MB

Version

1.0.0

Calling it

The first call returns a 402 with the payment challenge. Retry with a signed authorisation in the X-PAYMENT header — see the payment guide for the exact shape.

curl -i -X POST "https://api.dana-edu.pp.ua/v1/text/diff" \
  -H "content-type: application/json" \
  -d '{ ... }'

Response

Real output, captured by running this endpoint at build time — not written by hand. Volatile fields such as timestamps are elided. Captured 2026-07-30.

{
  "identical": false,
  "granularity": "line",
  "similarity_ratio": 0.6667,
  "added": 1,
  "removed": 1,
  "changed_blocks": 1,
  "operation_count": 1,
  "operations": [
    {
      "operation": "replace",
      "before_range": [
        1,
        2
      ],
      "after_range": [
        1,
        2
      ],
      "before": [
        "beta"
      ],
      "after": [
        "beta changed"
      ]
    }
  ],
  "unified_diff": "--- before\n+++ after\n@@ -1,3 +1,3 @@\n alpha\n-beta\n+beta changed\n gamma",
  "before_units": 3,
  "after_units": 3
}

Every response is wrapped in the same envelope: data plus warnings, sources, confidence, informational_only and a measured processing_ms. See the envelope reference.

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