x402 Utils – Text Diff

x402

x402 Utils – Text Diff is a paid API for AI agents from utils.kagurazaka.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-30).

Compares two texts by lines, words, or characters and returns added/removed counts, a list of changes, and a unified diff.

Price / call$0.001

Seller volume →—

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

A JSON object containing: the count of added and removed units, an array of change objects each with a type ('added' or 'removed') and the affected value, a unified diff string (for line mode), and a boolean 'identical' flag indicating whether the two texts are the same.

Example use cases

Code review change summary

“Show me a line-by-line diff of these two versions of my config file so I can see exactly what changed — here's the old version and the new version.”

Proofreading word-level edits

“Compare my original draft and the edited version word by word and list what words were added or removed.”

Document identity check

“Check whether these two contract texts are identical, and if not give me a unified diff so I can see where they differ.”

Technical details

Endpoint

POSThttps://utils.kagurazaka.dev/v1/diff?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a structured, machine-readable diff (added/removed counts plus a unified diff string) between two pieces of text at the line, word, or character level. It is ideal for agents that need to summarize editorial changes, verify document equivalence, or produce patch-style output without running local diff tooling. Prefer it over generic text comparison when you need all three outputs (counts, change list, and unified diff) in one call.

Side effects

Missing 'a' or 'b' fields returns a validation error
Invalid 'mode' enum value returns a 400-style error
Very large texts may increase latency or hit size limits
Payment failure (402) if USDC balance is insufficient

Input

Schema · Request body

Field	Type	Description
a	string	the old text
b	string	the new text
mode	string	unit of comparison (default lines)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "added": 2,
    "changes": [
      {
        "type": "removed",
        "value": "two\n"
      },
      {
        "type": "added",
        "value": "2\n"
      }
    ],
    "removed": 1,
    "unified": "--- a\n+++ b\n@@ ...",
    "identical": false
  }
}

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