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Minecraft Mod Compatibility API (Modrinth / Lodestone)
x402
Minecraft Mod Compatibility API (Modrinth / Lodestone) is a paid API for AI agents from mcapi.jackiscool.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Returns the latest Minecraft, NeoForge, and Fabric loader version strings for compatibility checks in modpack tools and agents.
Price / call$0.001
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 containing four version strings: latest_release (current stable Minecraft), latest_snapshot (current Minecraft snapshot), neoforge_latest (current NeoForge build), and fabric_loader_latest (current Fabric loader version).
Example use cases
Modpack version update check
“Can you check the latest Minecraft release and NeoForge version so I know if my modpack is out of date?”
Fabric loader compatibility check
“I'm building a Fabric modpack — what's the latest Fabric loader version I should be using right now?”
Automated snapshot detection
“Is there a new Minecraft snapshot out? Pull the latest snapshot version for me so I can test my mods against it.”
Technical details
Endpoint
GEThttps://mcapi.jackiscool.com/versions?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent or modpack automation tool needs current Minecraft ecosystem version metadata (release, snapshot, NeoForge, Fabric) in a single low-cost call without requiring signup. It is purpose-built for modpack tooling and mod compatibility workflows, paying per call via x402 with no account needed.
Side effects
- Payment not provided or insufficient funds via x402 — returns 402 Payment Required
- Upstream Modrinth API unavailable — may return stale or error response
- Network timeout on the mcapi.jackiscool.com host — no data returned
- Malformed query parameters — may return 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"latest_release": "26.3",
"latest_snapshot": "26.4-snapshot-5",
"neoforge_latest": "26.3.0.97",
"fabric_loader_latest": "0.20.1"
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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