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Lodestone Minecraft Mod Compatibility API
x402
Lodestone Minecraft Mod Compatibility API is a paid API for AI agents from mcapi.jackiscool.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-28).
Checks whether a set of Modrinth mods are mutually compatible for a given mod loader and Minecraft game version, returning per-mod download URLs, required dependencies, and the newest shared game version.
Price / call$0.01
Success—
StatusUnknown
How this service works
Modrinth mod compatibility checks for agents and modpack tools. 0.01 USDC per call via x402, no signup.
Output
A JSON object indicating whether all mods are mutually compatible (all_compatible boolean), the newest Minecraft game version all mods share (newest_shared_game_version string), a list of any missing required dependencies, and per-mod details including compatible version and download URL.
Example use cases
Modpack compatibility audit
“I'm building a Fabric modpack and want to know if sodium, lithium, iris, indium, and fabric-api all work together on Minecraft 1.21.1 — can you check compatibility and flag any missing required dependencies?”
Newest shared version discovery
“What's the newest version of Minecraft that sodium, lithium, and create are all simultaneously compatible with on Fabric?”
NeoForge modlist validation
“Can you verify that jei, appleskin, and waystones are all compatible on NeoForge for Minecraft 1.20.4 and give me the download URLs for each compatible version?”
Technical details
Endpoint
GEThttps://mcapi.jackiscool.com/compat?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate a specific list of Modrinth mods for cross-compatibility on a given loader and Minecraft version, especially when you also need download URLs and dependency resolution in a single call. Prefer this over manually querying Modrinth's API when you want the newest shared game version computed automatically across multiple mods.
Side effects
- Invalid or unknown Modrinth slug returns an error or excludes that mod from results
- More than 25 mods specified may be rejected
- No compatible version found for the requested loader/game version combination results in all_compatible: false
- Network or Modrinth API downtime causes request failure
- Unsupported loader value returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"all_compatible": true,
"newest_shared_game_version": "1.21.1",
"missing_required_dependencies": []
}
}Tags
x402
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