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Riddle Duel

A real riddle game session with 105 original riddles, fuzzy matching, and hint-penalty scoring

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.

Let's play a riddle game
Tools called
new_session
Give me another riddle
Tools called
next_riddle
Is it a candle?
Tools called
submit_guess
Give me a hint
Tools called
get_hint
I give up, what's the answer?
Tools called
give_up
What's my score?
Tools called
session_stats
What riddle categories are there?
Tools called
list_categories
How does scoring work?
Tools called
rules_info

About

Riddle Duel is a fully local, playable riddle game session. new_session builds a shuffled, no-repeat pool of riddles (optional category/difficulty filter) and serves the first one. submit_guess checks your answer with real fuzzy matching -- exact, plural-tolerant, partial-phrase, and small-edit-distance tiers, in that order -- and scores it exactly (base points minus a per-hint penalty). get_hint reveals up to two escalating hints; give_up reveals the answer; next_riddle serves the next pool entry and reports honestly once it's exhausted. session_stats tallies your score and accuracy, list_categories shows the bank's breakdown, and rules_info explains the exact matching and scoring rules. Stateless -- no server-side session storage, the caller passes state between calls. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Original, hand-authored content. 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
Play5 tools
  • New sessionStart a new Riddle Duel session: build a shuffled, no-repeat pool of riddles (optionally filtered by category/difficulty) and serve the first one.
  • Next riddleServe the next riddle from the pool (any unresolved current riddle is counted as skipped).
  • Submit guessCheck a guess against the current riddle's answer using real fuzzy matching.
  • Get hintReveal the next of up to 2 escalating hints for the current riddle.
  • Give upGive up on the current riddle and reveal its answer (scores 0 for this riddle).
Info3 tools
  • Session statsReport the session tally: riddles seen, solved, skipped, given up on, score, and pool remaining.
  • List categoriesList riddle categories with a difficulty breakdown and counts.
  • Rules infoExplain Riddle Duel's rules: pooling, fuzzy matching, and exact scoring.

Information

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

Connect it to your agent

Three ways in, the same 8 tools.

MCP (Claude, Cursor, Windsurf, VS Code, any MCP client)https://riddleduel.connectorbay.com/mcp
RESTPOST https://riddleduel.connectorbay.com/v1/tools/<tool>
OpenAI function callinghttps://connectorbay.com/openai/riddleduel.json
OpenAI-compatible chathttps://connectorbay.com/v1/chat/completions · how it works
  • Add the MCP URL in your client's connector, MCP or integration settings (streamable HTTP, no OAuth).
  • Key: none needed.
  • Ask a question; the agent picks the right tool and answers from the live data.

Riddle Duel connector: questions and answers

What is the Riddle Duel connector?

Riddle Duel is a fully local, playable riddle game session. It is a hosted MCP server with 8 tools such as New session, Next riddle, Submit guess, Get hint, Give up, Session stats, published by Unify Dynamics LLC. It is independent and not affiliated with Riddle Duel.

How do I connect Riddle Duel to Claude, ChatGPT or Cursor?

Add the MCP endpoint https://riddleduel.connectorbay.com/mcp to your client's MCP, connector or integration settings (streamable HTTP, no OAuth). For REST, POST JSON to https://riddleduel.connectorbay.com/v1/tools/<tool>; the OpenAPI description is at /openapi.json. For OpenAI function calling, load https://connectorbay.com/openai/riddleduel.json.

Do I need an account or API key for Riddle Duel?

No. The connector needs no sign-in and no key. An optional Pro key only raises rate limits.

Is Riddle Duel read-only?

Yes. Every tool reads or computes. Nothing is created, changed, sent, paid or deleted in your account.

Is the Riddle Duel connector free?

Yes. It is free to use within the published rate limits; an optional Pro key raises them. There is no account to create.

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Documentation

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What Riddle Duel is for

A fully local, PLAYABLE riddle GAME SESSION over a bank of 105 original, hand-authored riddles across seven categories: wordplay, everyday objects, nature, the human body, tech, math, and tricky lateral-thinking riddles.

What it does

new_session builds a shuffled, no-repeat pool of riddles (optionally filtered by category and/or difficulty) and serves the first one. submit_guess checks your answer with real, documented fuzzy matching -- exact match after normalizing case/punctuation/whitespace, simple plural tolerance, whole-word partial-phrase containment (so "a lit candle" matches "candle"), and finally a small Damerau-Levenshtein edit-distance allowance for typos. A correct answer scores points for the riddle's difficulty, minus a penalty for every hint used on that riddle, computed exactly. get_hint reveals up to two escalating hints; give_up reveals the answer and moves on; next_riddle serves the next pool entry (counting any unresolved current riddle as skipped) and reports honestly once the pool runs out, instead of repeating a riddle. session_stats tallies riddles seen/solved/skipped/given-up and your score and accuracy.

How state works

There is no server-side session storage. Every call takes the full session state (the exact object returned by the previous call) and returns a new one. The pool is a list of internal riddle ids, not spoiler text, but avoid printing the raw state to the player to keep guessing fair.

What it is not

Not a static riddle-reference list -- riddles are served one at a time from a live, shrinking, no-repeat pool with real answer-matching and real scoring math, not a lookup table you could just read through.

Privacy policy

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Riddle Duel — Privacy Policy

Effective 28 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Riddle Duel is. Riddle Duel is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf to run a local riddle game session — serving riddles, checking guesses, and computing hints and scores.

What we receive. The arguments of each tool call — the session state you (via your assistant) pass back on every call, your guesses, and 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) — plus standard server logs.

Everything is computed locally and nothing is stored. Riddle Duel has no database and no server-side session storage of any kind. The entire session state lives only in your conversation with your assistant, which passes it back to us on each call and receives an updated copy in the response. We do not persist it, log it, or use it for anything beyond computing that one response. No request is forwarded to any third party — there is no upstream call at all.

What we do not receive or store. We do not receive your name, your conversation with the assistant beyond the bare session-state argument, or anything else about you. Each request is answered independently. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs (IP addresses and request paths, not request bodies) are retained for up to 30 days for security and abuse prevention.

Sub-processors. None — computation is entirely local to this server. 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 Duel 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 Duel — Terms of Service

Effective 28 September 2026. These terms govern use of the Riddle Duel connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Riddle Duel is a stateless, playable riddle game session engine, accessed through an AI assistant or directly over MCP or HTTP. There is no server-side session storage: the caller holds and passes session state between calls.
  2. Entertainment only. Riddle Duel is provided for entertainment purposes. Nothing in it constitutes advice of any kind.
  3. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to disrupt, overload, or reverse-engineer the underlying infrastructure.
  4. Availability. The Service is provided "as is" without warranty. We may change, limit, or discontinue it at any time.
  5. Data. Our Privacy Policy describes what we process. In short: session state is computed statelessly from what you send us and nothing is stored.
  6. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder, and may be revoked for abuse.
  7. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss, injury, or damage arising from use of, or reliance on, the Service. Our total liability is limited to US $100.
  8. Governing law. California law; venue in San Mateo County, California.
  9. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/riddleduel

Support

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Riddle Duel 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 Duel never asks for them.

Get Riddle Duel

Free · No sign-in · Read-only

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

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