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x402 Utils – Text Diff
x402
x402 Utils – Text Diff is a paid API for AI agents from qcb7fnxsbd7fbhj4.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Compares two texts by lines, words, or characters and returns what was added, removed, and a unified diff for line-mode comparisons.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compare two texts by lines, words or characters: what was added and removed, and a unified diff for lines.
Output
Returns a structured breakdown of what was added and removed between the two input texts at the specified granularity (lines, words, or characters), plus a unified diff string when comparing by lines.
Example use cases
Code review change summary
“I have two versions of a config file — can you diff them line by line and tell me exactly what lines were added and removed? Old: 'timeout=30
retries=3
verbose=false' and new: 'timeout=60
retries=5
verbose=true
debug=true'”
Proofreading document edits
“Compare these two draft paragraphs at the character level and tell me every single character that changed: old text is 'Acme Corp provides reliable services.' and new text is 'Acme Corp provides reliable, fast services.'”
Content moderation change tracking
“Someone edited a user-submitted description — can you do a word-level diff to show exactly what words were added or removed? Before: 'Great product, highly recommend it to everyone.' After: 'Terrible product, do not recommend it to anyone.'”
Technical details
Endpoint
POSThttps://qcb7fnxsbd7fbhj4.68r.lambda-web.us-east-1.on.aws/v1/diff?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a programmatic, structured diff between two text strings with explicit granularity control (lines, words, or characters) and a unified diff output, rather than a human-readable summary or semantic similarity score. Ideal for change tracking, document versioning, audit trails, and content moderation workflows where exact edits matter.
Side effects
- Missing required fields 'a' or 'b' returns a validation error
- Invalid 'mode' value (not lines/words/chars) returns an error
- Very large texts may time out or exceed payload limits
- Payment not provided or insufficient USDC balance results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| a | string | the old text |
| b | string | the new text |
| mode | string | unit of comparison (default lines) |
Tags
x402
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