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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 2026-09-14).
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
Deterministic, dependency-free data utilities served over x402 micropayments (USDC on Base). None of these call another AI model. Keyword: JSON repair Keyword: malformed JSON Keyword: broken JSON from LLM Keyword: fix JSON output Keyword: JSON sanitizer Keyword: truncated JSON recovery Keyword: YAML to JSON Keyword: convert YAML Keyword: parse YAML config Keyword: cron next run Keyword: cron parser Keyword: when does cron run next Keyword: unified diff Keyword: line diff Keyword: text diff Keyword: HTML to text Keyword: extract links Keyword: extract emails Keyword: scrape text Keyword: whois lookup Keyword: domain registration Keyword: registrar Keyword: domain expiry date Keyword: RDAP Keyword: dns lookup Keyword: MX records Keyword: TXT records Keyword: A record Keyword: DNS over HTTPS Keyword: github repo stats Keyword: github stars Keyword: repository popularity Keyword: OSS project metadata Keyword: email validation Keyword: verify email address Keyword: check MX deliverability Keyword: email syntax Use case: repair a JSON code block wrapped in Markdown fences Use case: turn a docker-compose or CI YAML file into JSON Use case: compute the next UTC fire time of a cron expression Use case: produce a unified diff between two versions of a file Use case: strip HTML tags and pull out links, emails, and headings Use case: look up a domain's registrar, status and expiry before purchase Use case: check when a domain registration lapses Use case: resolve A, AAAA, MX, TXT or NS records for a hostname Use case: find a domain's mail servers and SPF TXT record Use case: compare GitHub repository stars, forks and activity for market research Use case: check whether an email address is well-formed and its domain accepts mail
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/diffWhen 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 |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"added": 1,
"removed": 1,
"unified": "@@ -1,3 +1,3 @@\n a\n-b\n+B\n c",
"identical": false
}
}Tags
x402
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