// Look up Roblox Engine API documentation using the http_get tool. Use when you need accurate, up-to-date details about classes, datatypes, enums, globals, or libraries.
Convert a non-streaming Roblox game to use streaming or fix streaming bugs and anti-patterns.
Control the Studio Device Simulator to test UI across device form factors. Use when switching devices, testing orientations, running multi-device comparisons, or verifying UI layout via MCP tools (execute_luau + screen_capture).
Analyze and optimize Roblox scenes using SceneAnalysisService — rendering, memory, instance composition, unparented instances, and animation/audio assets. Use when investigating performance, memory, or leaks in a place.
Simulate mouse, keyboard, and pointer input on running Roblox games to test UI interactions programmatically. Use when clicking buttons, typing text, scrolling, zooming, panning, adjusting camera, or running multi-step interaction tests via MCP tools (execute_luau + screen_capture).
| name | docs_search |
| description | Look up Roblox Engine API documentation using the http_get tool. Use when you need accurate, up-to-date details about classes, datatypes, enums, globals, or libraries. |
Use the http_get tool to fetch official Roblox Engine API docs as clean markdown.
The tool supports an optional query parameter that searches the fetched content for a keyword. When a query is provided, only matching sections are returned (or a short "no match" message), saving context window space. Misses are cheap — they cost one line in context. Prefer using query unless you already know you need the full document.
The API name in the URL is PascalCase and matches the Roblox API name exactly. URL patterns:
| Type | URL pattern |
|---|---|
| Classes | https://create.roblox.com/docs/reference/engine/classes/<ClassName>.md |
| Datatypes | https://create.roblox.com/docs/reference/engine/datatypes/<TypeName>.md |
| Enums | https://create.roblox.com/docs/reference/engine/enums/<EnumName>.md |
| Globals | https://create.roblox.com/docs/reference/engine/globals/<GlobalName>.md |
| Libraries | https://create.roblox.com/docs/reference/engine/libraries/<LibName>.md |
If you KNOW the exact API and need the full reference:
http_get(url: "https://create.roblox.com/docs/reference/engine/classes/Part.md")
If you need to SEARCH for a specific property/method across pages, use the query parameter:
http_get(url: "https://create.roblox.com/docs/reference/engine/classes/Part.md", query: "Anchored")
http_get(url: "https://create.roblox.com/docs/reference/engine/classes/BasePart.md", query: "Anchored")
This lets you check multiple pages cheaply — misses cost almost nothing. If you find a match you can just pass in only the url to get the full reference.
If you want more context around a match without returning the full document:
http_get(url: "...", query: "Anchored", context_lines: 10)
If you want the full document when the query matches, without a second call:
http_get(url: "...", query: "Anchored", return_full: true)
Returns the full doc only if the query is found; still returns "no match" if not found.
If you don't know which API to look up, use the index:
http_get(url: "https://create.roblox.com/docs/reference/engine/llms.txt")
The index lists all classes, datatypes, enums, globals, and libraries with one-line summaries. Note: the index does NOT list individual methods or properties. If searching for a method, search the index for related class/domain terms instead, then fetch the candidate class doc.
If the user references a deprecated API:
http_get(url: "https://create.roblox.com/docs/reference/engine/deprecated.md")
It maps every deprecated property, method, event, and class to its modern replacement.
.md or be llms.txt — the tool rejects anything else.