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Text Diff / String Comparison API
x402
Text Diff / String Comparison API is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.016/call, status unknown (last checked 2026-09-13).
Compares two text strings and returns added, removed, and unchanged segments at line, word, or character granularity in unified diff format
Price / call$0.016
Success—
StatusUnknown
How this service works
Text diff, text comparison, diff two strings, line diff, word diff, character diff, file diff, text patch, unified diff format, compare strings, git diff style, text difference. Compare two texts, return added/removed/unchanged segments. Line, word, or char granularity. Accepts payment on Base or Solana — either network works.
Output
Returns an array of diff segments, each with a 'value' string and boolean flags 'added' and 'removed' (absent means unchanged), plus a 'mode' string indicating the granularity used, and integer counts of added_count and removed_count segments.
Example use cases
Example prompt
“Can you diff these two paragraphs word by word and show me exactly what was added and removed? Original: 'The quick brown fox jumps over the lazy dog.' New: 'The quick red fox leaps over the sleepy cat.'”
Technical details
Endpoint
GEThttps://api.x402node.dev/text/diffWhen to prefer
Choose this endpoint when you need a structured, machine-readable diff of two text strings with explicit added/removed/unchanged segments — especially when you need line, word, or character granularity control. Ideal for AI agents that need to programmatically process text changes rather than display a human-readable diff, or when integrating into automated content review, changelog generation, or version comparison pipelines.
Side effects
- Missing one or both text inputs — returns error indicating required fields
- Invalid mode value — may default to line or return validation error
- Extremely large texts may time out or exceed payload limits
- Payment failure (x402) — returns 402 Payment Required if USDC payment not provided
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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