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IA-QA — 152 QA & Dev Tools for AI Agents

by io.github.JcJamet
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format_json

Read-onlyIdempotent

Validate and pretty-print a string that is ALREADY valid JSON. Strict by design — it is a validity gate: valid JSON comes back formatted, anything else is rejected with the exact parse error. It never repairs, completes, or guesses. NOT for: plain text or prose (will fail), JSON embedded in markdown/prose (extract_json_from_text pulls it out), JS objects (JSON.stringify them first), YAML (yaml_to_json reads it).

Input Schema

NameRequiredDescriptionDefault
inputYesA raw JSON string, e.g. '{"key":"value"}'. Must already parse as JSON — plain text or truncated JSON is rejected, not repaired.
indentNoIndent size (default: 2)

Output Schema

NameRequiredDescriptionDefault
validNo
formattedNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / examples
      Added value: +[
+  {
+    "input": "{\"a\":1,\"b\":{\"a\":2}}"
+  }
+]
  2. Changed1 schema field changed
    • changedInput schema / properties / input / description
      Previous value: -"Raw JSON string to format"New value: +"A raw JSON string, e.g. '{\"key\":\"value\"}'. Must already parse as JSON — plain text or truncated JSON is rejected, not repaired."
  3. Changed1 schema field changed
    • addedOutput schema / properties
      Added value: +{
+  "formatted": {
+    "type": "string"
+  },
+  "valid": {
+    "type": "boolean"
+  }
+}
  4. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "type": "object"
+}
  5. First observed

TDQS

Score is being calculated.

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