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Word Ladder

Real word-ladder puzzles with a genuine BFS solver — change one letter at a time

Unify Dynamics LLC

Tools5read-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.

Give me a word ladder puzzle
Tools called
new_puzzle
Give me a hard word ladder with 6-letter words
Tools called
new_puzzle
Is COLD connected to WARM by a word ladder?
Tools called
solve
Turn CAT into DOG for me — what's the shortest path?
Tools called
solve
I'll try WOLD next
Tools called
submit_step
Give me a hint
Tools called
get_hint
Show my current ladder
Tools called
render

About

Word Ladder generates and validates real word-ladder puzzles. new_puzzle picks a solvable start/end pair of a given letter length (optionally aiming for a target number of steps) and returns the puzzle state. submit_step takes that state plus the player's next word, checks it's the right length, a real dictionary word, exactly one letter different from the current last word, and not already used, then appends it and flags whether the target was reached. get_hint runs a real BFS from the current position to the target and reports the true shortest remaining distance plus the first letter of one valid next word. solve is a standalone BFS solver: give it any two same-length words and it reports whether a ladder connects them and, if so, the shortest one and its length. render turns a state into a human-readable chain. Fully stateless: the caller holds and passes the puzzle state between calls. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Bundled dictionary is the public-domain ENABLE word list (Enhanced North American Benchmark Lexicon), cleaned and lightly filtered. 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.

What it can do

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

OpenAPI
Play3 tools
  • New puzzleGenerate a solvable word-ladder puzzle: a start word and a same-length target word connected by a real chain of single-letter changes.
  • Submit stepTry the next step in the ladder.
  • Get hintThe real shortest remaining distance (BFS) from the current chain position to the target, plus the first letter of one valid next word — never the…
Solve & Review2 tools
  • SolveStandalone BFS solver: is there a word ladder between these two words, and if so what's the shortest one?
  • RenderA human-readable rendering of the chain so far and the target.

Information

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

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Documentation

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What Word Ladder is for

A real, playable word-ladder puzzle: turn a start word into a target word of the same length by changing one letter at a time, with every step along the way a real dictionary word (COLD -> WOLD -> WORD -> WARD -> WARM). Fully local — a genuine bundled dictionary and a real BFS solver, no upstream calls.

What it does

new_puzzle picks a solvable start/end pair of a given letter length (optionally aiming for a difficulty in number of steps) and returns the puzzle state. submit_step takes that state plus the player's next word, checks it's the right length, a real dictionary word, exactly one letter different from the current last word, and not already used — then appends it and flags whether the target was reached. get_hint runs a real breadth-first search from the current position to the target and reports the true shortest remaining distance plus the first letter of one valid next word, without spoiling the whole path. solve is a standalone BFS solver: give it any two same-length words and it reports whether a ladder connects them and, if so, the shortest one and its length. render turns a state into a human-readable chain.

How state works

This connector keeps no server-side session. new_puzzle returns a state object; every other tool takes that state (or the one returned by the previous call) and returns an updated copy. The calling assistant is responsible for holding onto it between turns.

What it is not

Not connected to any account, leaderboard, or third-party word-game service — the dictionary is a bundled, public-domain word list (ENABLE), the solver is a real graph search run entirely on the server that answers your request, and nothing about a puzzle in progress is stored once the response is sent.

Privacy policy

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Word Ladder — Privacy Policy

Effective 27 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Word Ladder is. Word Ladder is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf to run a local word-ladder puzzle game. Each tool call receives the current puzzle state (or, for the standalone solver, just two words) and returns a result — there is no account, login, or save file.

What we receive. The arguments of each tool call — a word length, a puzzle state object (start, target, and chain so far), or a pair of words to solve — plus 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 dictionary and nothing is stored. No request is forwarded to any third party — there is no upstream call at all — and no puzzle state or submitted word is logged in request bodies, recorded, or used to train anything. Each request is answered independently; the state you send us is used only to compute that one response and is discarded immediately after.

What we do not receive or store. We do not receive your name, an account identifier, or any persistent player profile — there is none. 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 dictionary 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. Word Ladder is a general-audience word game 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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Word Ladder — Terms of Service

Effective 27 September 2026. These terms govern use of the Word Ladder connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Word Ladder is a fully local word-ladder puzzle game and solver. Given a start and target word of the same length, the Service can generate a solvable puzzle, validate a player's own step-by-step chain, or solve any pair of same-length words via breadth-first search. It is accessed through an AI assistant or directly over MCP or HTTP.
  2. Entertainment only. This Service is a casual word-puzzle game, not a competitive-ranking service or a source of authoritative dictionary rulings.
  3. No accounts, no persistence. There is no login, save file, or leaderboard. Puzzle state lives only in the conversation you're having with your assistant.
  4. Dictionary. Word validity, and therefore solvability, is determined by a bundled, public-domain word list (ENABLE). This Service's dictionary is the final word for its own solving and scoring, but it is not a claim about any other dictionary.
  5. Acceptable use. Automated use within the published rate limits is welcome.
  6. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  7. Data. Our Privacy Policy describes what we process. In short: your puzzle state is answered from a bundled dictionary, and nothing is stored.
  8. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  9. 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.
  10. Governing law. California law; venue in San Mateo County, California.
  11. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/wordladder

Word Ladder 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. Word Ladder never asks for them.

Get Word Ladder

Free · No sign-in · Read-only

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

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