verified openmods.json Validator

Paste your manifest below to check it against the same parser OpenMods uses on every sync. Catches JSON syntax errors, missing required fields, unknown properties, and bad slugs — then shows a preview of how the data will land on your mod page.

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openmods.json

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Awaiting input

Click Validate to check your manifest. The validator runs the exact OpenModsManifest parser used during sync, plus extra checks for unknown top-level properties (catches typos like Name vs name).

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For live IDE validation

Add "$schema": "https://openmods.net/manifest.schema.json" to the top of your openmods.json. VS Code and most editors will then highlight errors, autocomplete fields, and show inline docs as you type — without needing to paste anything here.

open_in_new View schema