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Penniless Data Utilities – Text Diff
x402
Penniless Data Utilities – Text Diff is a paid API for AI agents from penniless-json-repair.sjaman.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Computes a unified line-level diff between two text inputs, returning added/removed line counts and a unified diff string
Price / call$0.001
Success—
StatusUnknown
How this service works
Paste malformed JSON from ChatGPT, Claude or any model and get it repaired in your browser. Fixes code fences, trailing commas, single quotes, unquoted keys, Python True/False/None, comments and truncated output — and names every repair it made. Free, no signup, nothing uploaded.
Output
Returns a JSON object with: ok (boolean success flag), added (count of added lines), removed (count of removed lines), unified (the full unified diff string with @@ hunks), and identical (boolean indicating whether the two inputs were the same)
Example use cases
Detect code review changes
“I have two versions of a function — the original and a colleague's edit. Can you give me a unified diff showing exactly which lines changed between them?”
Verify prompt template update
“Compare these two prompt templates for me: the old one and the new one I just edited. Show me all the lines that were added or removed in unified patch format.”
Check if config files differ
“I've got two copies of a YAML config — one from staging and one from production. Are they identical, and if not, what are the exact line-level differences?”
Technical details
Endpoint
POSThttps://penniless-json-repair.sjaman.workers.dev/diff?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a deterministic, low-cost ($0.001 USDC) line-level diff with no LLM involvement — ideal for comparing config files, code snippets, prompt templates, or any plain text where you want an exact unified diff output. Prefer it over AI-based summarization when you need a precise machine-readable patch format rather than a natural language summary of changes.
Side effects
- Missing required body fields returns an error with ok: false
- Non-text or unparseable body content may result in a processing error
- Insufficient USDC balance or failed x402 micropayment causes a 402 Payment Required response before the computation runs
- Very large inputs may be truncated or timeout at the edge worker
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| newrequired | string | Changed text |
| oldrequired | string | Original text |
| context | number | Context lines per hunk (default 3) |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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