{"uid":"cap_MaBeqwZnmCz64MiY2H_fG","slug":"lodestone-minecraft-mod-compatibility-api-59400f4f","name":"Lodestone Minecraft Mod Compatibility API","description":"Modrinth mod compatibility checks for agents and modpack tools. 0.01 USDC per call via x402, no signup.","url":"https://mcapi.jackiscool.com/compat?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object","required":["mods"],"properties":{"mods":{"type":"string","description":"Comma-separated Modrinth project slugs or ids (max 25), e.g. sodium,lithium,iris"},"loader":{"enum":["fabric","forge","neoforge","quilt"],"type":"string","default":"fabric","description":"Mod loader"},"version":{"type":"string","description":"Minecraft game version, e.g. 1.21.1"}}}}},"output":{"type":"object","properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"mods":{"type":"array","items":{"type":"object"}},"all_compatible":{"type":"boolean"},"newest_shared_game_version":{"type":"string"},"missing_required_dependencies":{"type":"array","items":{"type":"string"}}}}}}}},"responseSchema":{"type":"json","example":{"all_compatible":true,"newest_shared_game_version":"1.21.1","missing_required_dependencies":[]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RA_0lm-B6QAHDt92x9_uv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Can you check if sodium, lithium, iris, and fabric-api are all compatible with each other on Fabric for Minecraft 1.21.1, and tell me the newest game version they all share along with any missing required dependencies?","exampleUseCases":[{"title":"Modpack compatibility audit","prompt":"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?"},{"title":"Newest shared version discovery","prompt":"What's the newest version of Minecraft that sodium, lithium, and create are all simultaneously compatible with on Fabric?"},{"title":"NeoForge modlist validation","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T06:32:57.241Z","isFirstParty":false,"canonicalSlug":"lodestone-minecraft-mod-compatibility-api-59400f4f"}