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Riddle

A hand-curated riddle and brain-teaser reference — wordplay, logic, lateral thinking and math

Unify Dynamics LLC

Documentation
Tools8read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

What kinds of riddles do you have?
Tools called
category_list
Give me all your logic riddles
Tools called
riddle_by_category
Give me a random riddle
Tools called
random_riddle
I'm stuck, give me a hint
Tools called
riddle_hint
Is 'a shoe' the right answer to this riddle?
Tools called
submit_guess
What's the answer to this riddle?
Tools called
riddle_answer
How hard is this riddle?
Tools called
difficulty_level
What does 'lateral thinking' mean?
Tools called
term_glossary

About

Riddle is a fully local, hand-curated riddle and brain-teaser reference covering 53 riddles across five categories: Wordplay, Logic, Lateral Thinking, Classic & Traditional, and Math. riddle_by_category lists every riddle in one category as plain text with its id, difficulty and whether it has a hint, never the answer, so browsing doesn't spoil anything. random_riddle picks one at random, optionally restricted to a category. riddle_hint reveals a riddle's hint when one is on file. submit_guess checks a free-text guess against the stored answer using fuzzy matching, so small spelling or wording differences don't count against you, without revealing the answer on a wrong guess. riddle_answer reveals the answer, explanation and origin note. difficulty_level reports a riddle's 1-5 difficulty rating and what it means in practice. term_glossary defines common riddle/puzzle terms — lateral thinking, red herring, pun, homophone, anagram, knights and knaves, and more. category_list lists all five categories with counts. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Classic/traditional riddles rephrased from long-circulated public-domain material; remaining riddles composed originally for this reference. Fully local, zero upstream calls

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.
Privacy policyTerms

What it can do

8 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Browse3 tools
  • Category listEvery riddle category (Wordplay, Logic, Lateral Thinking, Classic & Traditional, Math) with how many riddles are in each.
  • Riddle by categoryEvery riddle in one category, as plain riddle text with its id, difficulty, and whether it has a hint — never the answer, so browsing a category…
  • Random riddleReturns one riddle at random, optionally restricted to a category — as plain riddle text with its id, difficulty, and whether it has a hint, never…
Solve3 tools
  • Riddle hintReveals one riddle's hint, without giving away the answer itself.
  • Submit guessChecks a free-text guess against a riddle's stored answer, using fuzzy matching so small differences in wording, articles ('a'/'the'), or spelling…
  • Riddle answerReveals one riddle's answer, its explanation, and its origin note (public-domain/traditional vs.
Reference2 tools
  • Difficulty levelReports one riddle's difficulty rating (1 = easiest, 5 = hardest), its qualitative label (easy/medium/ hard), and a short description of what that…
  • Term glossaryDefinitions of common riddle/brain-teaser terms — lateral thinking, red herring, pun, homophone, palindrome, anagram, knights and knaves, trick…

Information

PublisherUnify Dynamics LLC
CategoryGames & entertainment
LanguagesEnglish
Built forGlobal
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://riddle.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryWorldwide

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Documentation

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Riddle — connector documentation

  • MCP endpoint: https://riddle.connectorbay.com/mcp
  • REST API: POST https://riddle.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://riddle.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: none required. An optional Authorization: Bearer <key> raises rate limits.
  • Health: https://riddle.connectorbay.com/health · Tool schemas: https://riddle.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/riddle · agent@connectorbay.com

What Riddle is for

A hand-curated riddle and brain-teaser reference — wordplay, logic, lateral thinking and math.

What it does

Riddle is a fully local, hand-curated riddle and brain-teaser reference covering 53 riddles across five categories: Wordplay, Logic, Lateral Thinking, Classic & Traditional, and Math. riddle_by_category lists every riddle in one category as plain text with its id, difficulty and whether it has a hint, never the answer, so browsing doesn't spoil anything. random_riddle picks one at random, optionally restricted to a category. riddle_hint reveals a riddle's hint when one is on file. submit_guess checks a free-text guess against the stored answer using fuzzy matching, so small spelling or wording differences don't count against you, without revealing the answer on a wrong guess. riddle_answer reveals the answer, explanation and origin note. difficulty_level reports a riddle's 1-5 difficulty rating and what it means in practice. term_glossary defines common riddle/puzzle terms — lateral thinking, red herring, pun, homophone, anagram, knights and knaves, and more. category_list lists all five categories with counts. Keyless; fully local; zero upstream calls; nothing stored.

What it is not

Not an official product of, or affiliated with, any brand, league, publisher, or organization it may factually mention. Riddle is a hand-curated reference and design tool, not a substitute for an official rulebook, certified instruction, or professional advice. Fully local, zero upstream calls, nothing stored.

Tools

Browse

category_list — Every riddle category (Wordplay, Logic, Lateral Thinking, Classic & Traditional, Math) with how many riddles are in each. Use for "what kinds of riddles do you have".

riddle_by_category — Every riddle in one category, as plain riddle text with its id, difficulty, and whether it has a hint — never the answer, so browsing a category doesn't spoil anything. Use riddle_answer or submit_guess once you've picked one. Use category_list to see valid category names. Use for "give me all the logic riddles", "list your math riddles". Args: category.

random_riddle — Returns one riddle at random, optionally restricted to a category — as plain riddle text with its id, difficulty, and whether it has a hint, never the answer. Use riddle_answer or submit_guess afterward. Use for "give me a riddle", "tell me a random brain teaser", "give me a hard math riddle" (pair with difficulty_level, or just ask again for a different random pick). Args: category.

Solve

riddle_hint — Reveals one riddle's hint, without giving away the answer itself. Not every riddle has a hint on file; when one doesn't, this says so instead of guessing at one. Use for "give me a hint", "I'm stuck, help a little". Args: riddle_id.

submit_guess — Checks a free-text guess against a riddle's stored answer, using fuzzy matching so small differences in wording, articles ('a'/'the'), or spelling don't count against you. Never reveals the correct answer on a wrong guess — use riddle_answer for that. On a correct guess, also returns the explanation. Use for "is 'a shoe' the right answer", "check my guess for this riddle". Args: riddle_id, guess.

riddle_answer — Reveals one riddle's answer, its explanation, and its origin note (public-domain/traditional vs. original). Use once you're ready to see the solution, or to check your own reasoning after solving it. Use for "what's the answer to this riddle", "reveal the solution". Args: riddle_id.

Reference

difficulty_level — Reports one riddle's difficulty rating (1 = easiest, 5 = hardest), its qualitative label (easy/medium/ hard), and a short description of what that rating means in practice. Use for "how hard is this riddle", "is this an easy one". Args: riddle_id.

term_glossary — Definitions of common riddle/brain-teaser terms — lateral thinking, red herring, pun, homophone, palindrome, anagram, knights and knaves, trick question, and more. Use for "what does 'lateral thinking' mean", "what's a red herring in a riddle". Args: term.

Conventions

  • Read-only. Every tool reads public data or computes; nothing is written anywhere and nothing about the user is stored.
  • Result envelope. ok: true with data, or ok: false with a structured error (bad_input, not_found, upstream_error). degraded lists optional sources that were unreachable.
  • Rate limits. Free tier 60 tool calls/minute and 300/day per user (keyed on the user identifier supplied by the host agent, else client IP); Pro keys raise this. Over-limit calls return HTTP 429 with Retry-After. initialize and tools/list are never counted.

Support

agent@connectorbay.com · connectorbay.com/riddle/support

Privacy policy

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Riddle — Privacy Policy

Effective 25 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Riddle is. Riddle is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a hand-curated riddle and brain-teaser reference — wordplay, logic, lateral thinking and math. You interact with your assistant; the assistant sends us only the arguments needed for that one lookup.

What we receive. The arguments of each tool call, the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Everything is answered from a bundled, hand-curated reference file and nothing is stored. No request is forwarded to any third party — there is no upstream call at all, live or otherwise — and no query is logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant or your name, and we do not build a profile from your queries: each request is answered independently and nothing carries over between requests. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs, which contain IP addresses and request paths but not request bodies, are retained for up to 30 days for security and abuse prevention.

Sub-processors. None — the entire dataset is bundled with the server and answered locally. Hosting: Vercel (United States regions).

Legal bases and your rights. Our processing is necessary to provide the service you request through your assistant. Because we store no personal data beyond short-lived logs, requests to access, correct or delete personal data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information and do not use your data to train models.

Children. Riddle is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

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Riddle — Terms of Service

Effective 25 September 2026. These terms govern use of the Riddle connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Riddle is a fully local, hand-curated riddle and brain-teaser reference covering 53 riddles across five categories: Wordplay, Logic, Lateral Thinking, Classic & Traditional, and Math.
  2. A reference, not professional advice. Riddle is an independent reference and hobby/game-design tool, not affiliated with or endorsed by any brand, organization, league, or publisher it may factually mention. It does not provide legal, financial, medical, or safety-certification advice, and is not a substitute for supervised instruction where real physical risk is involved.
  3. Content varies. Rules, terminology and conventions described here reflect commonly-cited general practice; local house rules, regional variants, and official governing-body rulebooks may differ.
  4. Acceptable use. Automated use within the published rate limits is welcome.
  5. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  6. Data. Our Privacy Policy describes what we process. In short: your query is answered from a bundled reference file, and nothing is stored.
  7. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  8. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service. Our total liability is limited to US $100.
  9. Governing law. California law; venue in San Mateo County, California.
  10. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/riddle

Support

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Riddle support

Email agent@connectorbay.com. We answer within two business days.

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Riddle never asks for them.

Get Riddle

Free · No sign-in · Read-only

Streamable HTTP, stateless, no authentication. Paste the endpoint into any MCP-capable agent.

https://riddle.connectorbay.com/mcp
{
  "mcpServers": {
    "riddle": {
      "type": "http",
      "url": "https://riddle.connectorbay.com/mcp"
    }
  }
}