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Cryptex

A general puzzle-solving technique reference — sudoku, cryptic crosswords, logic grids, nonograms and more

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 puzzle types do you cover?
Tools called
puzzle_type_info
How do I solve a naked pair in sudoku?
Tools called
sudoku_technique
What's an anagram clue in a cryptic crossword?
Tools called
cryptic_clue_type
How do I solve a logic grid puzzle?
Tools called
logic_grid_howto
What does 'fodder' mean in a cryptic clue?
Tools called
term_glossary
What makes a nonogram harder or easier?
Tools called
difficulty_tip
I want something relaxing and visual with no reading — what puzzle should I try?
Tools called
find_puzzle_for_mood
Give me beginner tips for cryptic crosswords
Tools called
beginner_tips

About

Cryptex is a fully local, hand-curated general puzzle-solving technique reference covering 10 puzzle types. puzzle_type_info gives one puzzle type's full detail — category, a plain-language how-it-works method, typical difficulty range, and mood tags — or lists all 10 if no name is given. sudoku_technique explains one of 8 named sudoku solving techniques (naked single, hidden single, naked pair, hidden pair, naked triple, pointing pair, box-line reduction, X-Wing) with a worked example and when to use it. cryptic_clue_type explains one of 8 cryptic-crossword clue-type mechanics (anagram, hidden word, double definition, charade, container, reversal, homophone, deletion) with common indicator words and an original example clue fully broken down. logic_grid_howto explains the general method for solving a logic-grid puzzle, its four clue types, and a fully worked 3-clue example. term_glossary defines puzzle-solving vocabulary across every type covered. difficulty_tip explains what specifically makes a given puzzle type harder or easier. find_puzzle_for_mood suggests 2-4 puzzle types matching a plain-language mood or situation. beginner_tips gives an ordered shortlist of practical tips for a given puzzle type. Every example clue and puzzle is original, written for this reference, never a reproduction of a published, copyrighted puzzle. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Original, hand-curated general puzzle-solving technique reference with original example clues and puzzles; 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
Puzzle Types1 tools
  • Puzzle type infoFull detail for one puzzle type: category, a plain-language how-it-works method, its typical difficulty range, and mood tags.
Sudoku1 tools
  • Sudoku techniqueExplains one specific sudoku solving technique — naked single, hidden single, naked pair, hidden pair, naked triple, pointing pair, box-line…
Cryptic Crosswords1 tools
  • Cryptic clue typeExplains one cryptic-crossword clue-type mechanic — anagram, hidden word, double definition, charade, container/insertion, reversal, homophone, or…
Logic Grid Puzzles1 tools
  • Logic grid howtoExplains the general method for solving a logic-grid puzzle, defines its four common clue types (direct, negative, conditional, comparative) with…
Vocabulary & Guidance4 tools
  • Term glossaryDefinitions of puzzle-solving vocabulary spanning every puzzle type in this reference — candidate, naked/hidden, unit, givens, fodder,…
  • Difficulty tipExplains specifically what makes a given puzzle type harder or easier — which levers matter (grid size, clue mix, technique requirements) and…
  • Find puzzle for moodSuggests 2-4 puzzle types matching a stated mood or situation, keyword-matched against each puzzle type's tagged moods.
  • Beginner tipsAn ordered shortlist of practical tips for getting started with a given puzzle type.

Information

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

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Documentation

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Cryptex — connector documentation

  • MCP endpoint: https://cryptex.connectorbay.com/mcp
  • REST API: POST https://cryptex.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://cryptex.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://cryptex.connectorbay.com/health · Tool schemas: https://cryptex.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/cryptex · agent@connectorbay.com

What Cryptex is for

A general puzzle-solving technique reference — sudoku, cryptic crosswords, logic grids, nonograms and more.

What it does

Cryptex is a fully local, hand-curated general puzzle-solving technique reference covering 10 puzzle types. puzzle_type_info gives one puzzle type's full detail — category, a plain-language how-it-works method, typical difficulty range, and mood tags — or lists all 10 if no name is given. sudoku_technique explains one of 8 named sudoku solving techniques (naked single, hidden single, naked pair, hidden pair, naked triple, pointing pair, box-line reduction, X-Wing) with a worked example and when to use it. cryptic_clue_type explains one of 8 cryptic-crossword clue-type mechanics (anagram, hidden word, double definition, charade, container, reversal, homophone, deletion) with common indicator words and an original example clue fully broken down. logic_grid_howto explains the general method for solving a logic-grid puzzle, its four clue types, and a fully worked 3-clue example. term_glossary defines puzzle-solving vocabulary across every type covered. difficulty_tip explains what specifically makes a given puzzle type harder or easier. find_puzzle_for_mood suggests 2-4 puzzle types matching a plain-language mood or situation. beginner_tips gives an ordered shortlist of practical tips for a given puzzle type. Every example clue and puzzle is original, written for this reference, never a reproduction of a published, copyrighted puzzle. 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. Cryptex 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

Puzzle Types

puzzle_type_info — Full detail for one puzzle type: category, a plain-language how-it-works method, its typical difficulty range, and mood tags. Omit the name to list all 10 puzzle types covered (jigsaw, sudoku, cryptic crossword, standard crossword, logic grid puzzle, nonogram/picross, kakuro, kenken, word search, cryptogram). Use for "how do jigsaw puzzles work", "explain kakuro". Args: name.

Sudoku

sudoku_technique — Explains one specific sudoku solving technique — naked single, hidden single, naked pair, hidden pair, naked triple, pointing pair, box-line reduction, or X-Wing — with a worked example and guidance on when to reach for it. Omit the name to list all eight, ordered from beginner to advanced. Use for "what's a naked pair", "how does X-Wing work", "how do I solve hidden singles". Args: name.

Cryptic Crosswords

cryptic_clue_type — Explains one cryptic-crossword clue-type mechanic — anagram, hidden word, double definition, charade, container/insertion, reversal, homophone, or deletion — including its common indicator words and an original example clue fully broken down into definition and wordplay. Omit the name to list all eight. Use for "what's an anagram clue", "how does a container clue work", "give me an example of a charade clue". Args: name.

Logic Grid Puzzles

logic_grid_howto — Explains the general method for solving a logic-grid puzzle, defines its four common clue types (direct, negative, conditional, comparative) with short examples, and walks through a fully worked 3-clue example from clues to solution. Use for "how do I solve a logic grid puzzle", "what's a negative clue".

Vocabulary & Guidance

term_glossary — Definitions of puzzle-solving vocabulary spanning every puzzle type in this reference — candidate, naked/hidden, unit, givens, fodder, enumeration, surface reading, run, overlap technique, cage, direct/ negative/conditional/comparative clue, and more. Use for "what does fodder mean in a crossword clue", "what's a naked technique in sudoku". Args: term.

difficulty_tip — Explains specifically what makes a given puzzle type harder or easier — which levers matter (grid size, clue mix, technique requirements) and which don't. Use for "what makes a sudoku hard", "how do I make a nonogram more challenging". Args: puzzle_type.

find_puzzle_for_mood — Suggests 2-4 puzzle types matching a stated mood or situation, keyword-matched against each puzzle type's tagged moods. Use for "what puzzle should I do if I'm tired of reading", "I want something relaxing and visual", "quick puzzle for a coffee break". Args: description.

beginner_tips — An ordered shortlist of practical tips for getting started with a given puzzle type. Use for "tips for a sudoku beginner", "how do I get better at cryptic crosswords", "beginner tips for jigsaw puzzles". Args: puzzle_type, count.

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/cryptex/support

Privacy policy

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Cryptex — Privacy Policy

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

What Cryptex is. Cryptex is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a general puzzle-solving technique reference — sudoku, cryptic crosswords, logic grids, nonograms and more. 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. Cryptex 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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Cryptex — Terms of Service

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

  1. The Service. Cryptex is a fully local, hand-curated general puzzle-solving technique reference covering 10 puzzle types.
  2. A reference, not professional advice. Cryptex 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/cryptex

Support

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Cryptex 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. Cryptex never asks for them.

Get Cryptex

Free · No sign-in · Read-only

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

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