Riddle
Build, publish and analyze quizzes, polls, forms and personality tests
Create and manage interactive quizzes, polls, forms and personality tests. Publish them to the web, embed on sites, upload media, organize with tags, and view analytics on views, starts and submissions.
Try asking Muse: "Create a product quiz to help customers find the right item and publish it to my website"
Source: Found in the official MCP Registry (com.riddle/creator) · First listed September 24, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 19 min ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://www.riddle.com/creator/api/v3/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 1196ms. Worked in 100% of checks over 30 days.
Screening · September 24, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 38
media_upload_linkCreates a single-use link for uploading ONE media file into the media library. Call it when the user has a LOCAL file for a Riddle: this server cannot receive bytes, so the upload is yours. A link expires after 5 minutes, dies on first use (successful or not), and only 20 are hanmedia_deleteDeletes a file from the media library permanently, to clean up after yourself: an upload that turned out wrong, or a file the user no longer wants stored (it frees the storage it counted against). The file must be unused - one any Riddle still shows is refused with a message namiriddle_template_createStores an existing Riddle as a template of its project (or of the user, for a personal Riddle), so new Riddles can be created from it with riddle_template_use. The template is a copy taken at this moment - the Riddle keeps living its own life and later changes to it do not reach riddle_template_listLists the templates of a project (or your personal ones) - the ones made from your own Riddles with riddle_template_create, NOT Riddle's public ones, which riddle_template_public_list returns. Quick-create templates (isQuickCreate: true) are included alongside the regular ones; triddle_template_public_listLists Riddle's public templates - the ready-made ones every account has, as opposed to riddle_template_list's own ones. They are grouped by category (the tag the Creator sorts them by), so calling this without arguments is also how you learn which categories exist; "category" andriddle_template_getReads one template, by default INCLUDING its build configuration - the same "build" shape riddle_get returns and riddle_builder_create accepts. This is how a template is ADAPTED rather than copied: edit the returned "build" (wording, questions, blocks) and build it with riddle_buriddle_template_useCreates a new Riddle from a template as an unchanged copy of it - content, settings and design preset - recorded as a copy of the template's Riddle (riddle_get reports it as context.duplicated). Use this whenever the template is what you want; to adapt it first, read it with riddriddle_tag_listLists the tags of a project as {items: [{id, name, count, bankCount}]}, unpaginated - the labels the Creator shows and riddle_list's "tags" filter selects by, and where the ids that filter takes come from. Riddle tags and question bank tags are ONE set per project (question_bank_riddle_tagPuts a tag on Riddles or takes it off again, by "action" - ONE assignment per Riddle, never the tag itself (riddle_tag_list reads the labels of a project, riddle_tag_delete removes one). "add" gives one Riddle (UUID) or many (UUIDs, max 100) the tag named by tagName - created in riddle_tag_deleteDeletes the TAG ITSELF from a project - the label, for good - and no Riddle, no question bank and no assignment. Rarely needed: untagging the last carrier already removes a tag (riddle_tag action "remove"), so this is for a leftover from before that cleanup existed. It detaches npingA simple tool that returns "Pong". Can be used to test connectivity and authentication to the MCP.riddle_listReturns a paginated list of Riddles. With the default scope "project" they come from a single project - use projectId to name it, or omit it for the personal project. With scope "account" they come from the entire account instead: the personal project and every team project the uriddle_getReads one Riddle - or several, with UUIDs - as the compact build-configuration envelope {uuid, type, modifiedAt, build, nextBlockId, warnings, published, context}. "build" is the DRAFT and is exactly what the riddle_builder_* tools accept back; "published" is the live version visriddle_get_embed_codeGets the HTML embed code for a Riddle by its UUID. The code is returned regardless of publish state, but the URL it embeds will not serve the Riddle until it is published.riddle_publishPublishes one or many Riddles, or takes them off the web again with publish: false - unpublishing is this tool, there is no separate unpublish tool. A published Riddle is live at https://www.riddle.com/view/[RIDDLEID]. With UUID the response is the riddle_get envelope with the neriddle_renameRenames a Riddle with the specified UUID. Returns only the confirmation of the change (uuid, title, modified state), not the entire Riddle.riddle_deleteDeletes one or many Riddles. Only Riddles created through the riddle_builder_* tools or generated by the Riddle AI can be deleted - the ones a user built by hand in the Creator cannot, so check "origin.apiManageable" (riddle_get's context.origin, or riddle_list's "origin") beforeriddle_moveMoves one or many Riddles into another project or into the personal project - and, given no destination, reports whether it could instead of moving anything. Pass UUID for one Riddle or UUIDs (max 100) for several. CHECK MODE (the move check - a mode of this tool, not a tool of iwhoamiReports the current API key: the authenticated user ("userEmail"/"userName", the latter null if never set), the project/team on a project-scoped key, and the account's plan in "subscription" ({plan, period, active, created, termEnd, isFreeTrial, daysLeft} - on a free trial "termEquestion_bank_createCreates a new, empty question bank for the given Riddle type ("Quiz" or "Poll"). Add items with question_bank_item(action: "add"), then reference the returned "id" as "questionBankId" on a QuestionBank block of a riddle_builder_create call of the matching "type" - a bank created question_bank_listLists question banks. Scope "own" (the default) lists the banks of a project - the same ones the Creator shows; pass a projectId to look into another project, omit it for the project the API key is scoped to (your personal ones on a user API key). Paginated {items, page, pageSizequestion_bank_getRetrieves one question bank by id: title, riddleType, tags, notes, its categories/blockTypes and whether it has unpublished changes. The items themselves are question_bank_get_items, not included here. Works on a built-in template id from question_bank_list(scope: "templates") toquestion_bank_manageEverything that acts on a question bank as a whole, by "action" - the items themselves are question_bank_item, and the two calls that only destroy are question_bank_delete and question_bank_discard_changes. A public template id is accepted for "duplicate" only and rejected by evequestion_bank_itemAdds or replaces ONE question/item of a question bank, by "action" - deleting one is question_bank_delete. There is no universal item shape: read riddle://reference/question-bank/block-type-columns before the first "add" into a bank you have not populated - it lists the valid bloquestion_bank_discard_changesThrows away every unpublished change to a question bank's items at once, resetting each of them to its last published content. Irreversible - there is no undo and no copy of the discarded draft. A pending item delete comes back; an item ADDED since the last publish has no publishquestion_bank_deleteDeletes a question bank or ONE of its items - "target" says which, and nothing else deletes either. target "bank" removes the bank and every item it holds (its tags cleaned up exactly as question_bank_tag(action: "remove") does), and is rejected with QUESTION_BANK_INTERDEPENDENCYquestion_bank_get_itemsLists the items of a question bank - its DRAFT content by default, or its published items with published: true. Filter by search term, blockType, category or difficultyRange - the same filters a QuestionBank block draws with. A template id from question_bank_list(scope: "templatequestion_bank_tagAdds a tag to a question bank or removes one from it, by tagName or tagId from riddle_tag_list - exactly one of the two, as riddle_tag does. Question bank tags and Riddle tags are ONE set per project, not two: the same tag applies to banks and Riddles and has the same id in both,palette_getReads the palettes - colors, fonts, button styles, background settings - of a Riddle: every palette it can use (the ones inherited from the account/project default preset included) with all of their values, which one is selected, which values this Riddle overrides, and the built-palette_customizeChanges the palette (colors, fonts, button styles, background) of ONE Riddle, as a path => value map, e.g. {"bgColor": "#ffffff", "font.name": "Roboto"} - the paths are palette_get's or riddle://reference/palette/fields. Never affects another Riddle: a palette inherited from the riddle_builder_createBuilds a new Riddle of any of the nine types from a build configuration: "type" says which kind (see that argument for what each one is and what it needs at a minimum), "build" carries the content. Everything a type accepts is described on the "build" fields themselves, marked wiriddle_builder_updateEdits an existing Riddle of any type with the same build configuration riddle_builder_create takes - but as a merge, not a rebuild: only the fields you send are touched, an omitted one is left exactly as it is. Blocks are addressed by their "id", added with "$create": true, removriddle_builder_validateDry-runs one or many Riddle Builder creates and/or edits without creating or changing anything: per entry of "builds", the same validation the real call would apply, run against a scratch/deep-copied Riddle that is discarded before this returns - never persisted, never published,reference_getRead this server's own documentation: the block types, form field types, result blocks, palette values and response shapes the other tools expect. Every "riddle://reference/..." URI named in a tool description, a response or an error message is a topic of this tool - pass it herestats_fetchViews/starts/submissions of one entity - "namespace" plus "entityId" says which (a project, a user, or a Riddle by UUID), "view" how deeply. "totals": one aggregate for the period. The response IS the entity's stats document: metrics sit in "core_metrics" under "global_stats" (a project_listLists the projects this token has access to as {items, page, pageSize, total, hasMore} - the paging every listing of this server answers with (riddle://reference/concepts/response-envelope), here 25 per page, 100 max, so an account with many projects can be paged through; a projeproject_getReturns one project by id - id, name, image and the authenticated user's permission matrix for it. The id comes from project_list or from the "team" of riddle_get. The project's default Riddle settings are NOT included; they are a large nested tree with its own tool, project_get_project_get_settingsReturns the default Riddle settings every new Riddle of the project starts from - PUBLISHED and ENABLED only: "publishSettings" (privacy/DOI/OTP, email automation, tracking, data layer, ...) and "embedSettings" (iframe sizing, auto-scroll, ...), each holding only the areas whose Recent checks
Link
https://www.riddle.com/creator/api/v3/mcpQuestions about Riddle in Muse
How do I connect Riddle to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Riddle to help me. It is a free service with an MCP server at https://www.riddle.com/creator/api/v3/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Riddle working right now?
At the last check (September 28, 2026, 09:15 UTC) the endpoint was working, answering in 1196ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Riddle safe to connect to Muse?
It was screened on September 24, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Riddle do in Muse?
It exposes 38 tools, including media_upload_link, media_delete, riddle_template_create, riddle_template_list. For example, you could ask Muse: "Create a product quiz to help customers find the right item and publish it to my website"
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