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  "Name": "calculator-mcp-server",
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  "IssueTotal": 15,
  "Held": 15,
  "Issues": [
    {
      "Title": "bug(calculate): a function used as a value gets a unit-mismatch recovery hint (5 min to s)",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\nWhen implicit multiplication puts a function next to a value, math.js throws a type error from `multiplyScalar`. The call fails with `type_mismatch`, and the recovery tells the caller to attach or strip units. That points the wrong way. `5 min to s` reads `min` as the minimum function, not minutes. `(f(x) = x^2)(3)`…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/38",
      "PublishedAt": "2026-09-24T22:49:38.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): custom units (knot, lightyear) hijack unit simplification of SI results",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\nThe custom units the server registers (`mph`, `knot`, `lightyear`) take over math.js's automatic unit simplification. A velocity computed from SI units comes back in knots, and a product involving a length can come back in light-years. The values are numerically right but unreadable, and they aren't in the units the caller…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/37",
      "PublishedAt": "2026-09-24T22:49:36.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): Fraction mode rejects whole-number dimension arguments with fraction_unsupported",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\nUnder `numericType: \"Fraction\"`, the dimension argument of matrix reductions and `concat` parses as a Fraction, and those functions accept only a number there. The call fails with `fraction_unsupported`, whose message says the result has no exact rational value or the function can't be computed in Fraction mode. Both are…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/36",
      "PublishedAt": "2026-09-24T21:49:05.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): Fraction mode returns inexact floats without error and rejects integer indexes",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\nUnder `numericType: \"Fraction\"`, constants and non-integer powers fall back to a 64-bit float, and the call succeeds with resultType `number`. The caller asked for exact arithmetic and gets a rounded value with no error, which is the case `fraction_unsupported` exists to flag. Separately, integer indexes parse as Fractions,…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/35",
      "PublishedAt": "2026-09-24T21:35:21.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): assignments in an expression leak into scopeVars",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\n`evaluate` passes the caller's `scope` object to math.js, and an assignment inside the expression writes into that object. The handler builds `scopeVars` from `Object.keys(scope)` after evaluation, so the output lists names the caller never sent.\n\nRelated: #12 (`scopeVars` echo).\n\n### Steps to reproduce\n\n1. `calculate` with…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/34",
      "PublishedAt": "2026-09-24T21:06:12.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): Fraction mode misreports matrix size arguments and exponent literals",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\nUnder `numericType: \"Fraction\"`, two failures carry messages that point the caller the wrong way. Size arguments to matrix constructors parse as Fractions, and those functions have no Fraction signature, so `zeros(2)` fails with `fraction_unsupported`, whose message blames an irrational result. Exponent literals are…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/33",
      "PublishedAt": "2026-09-24T21:06:09.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): multiple-expression scan ignores single-quoted strings",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nNode.js\n\n### Runtime version\n\nBun 1.4.0 (via the tool handler)\n\n### Transport\n\nstdio\n\n### Description\n\n`hasExpressionSeparator()` (#16) treats only `\"` as a string delimiter; its comment says `'` is only the transpose operator. [math.js](https://mathjs.org/) 15 also parses `'…'` as a string literal (`'a;b'` → `\"a;b\"`). A `;` or newline inside a single-quoted string is therefore rejected as `multiple_expressions`. A `\"` or…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/32",
      "PublishedAt": "2026-09-24T19:48:58.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): help() in an expression escapes the typed-error mapping as an internal error",
      "Excerpt": "### Server version\n\n0.4.3\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nNode.js\n\n### Runtime version\n\nBun 1.4.0 (via `runToolContract`)\n\n### Transport\n\nstdio\n\n### Description\n\nCalling math.js [`help`](https://mathjs.org/docs/reference/functions/help.html) inside an expression fails with an uncontracted internal error. `help` is not in `DISABLED_FUNCTIONS`, so it returns a `Help` object that passes `validateResultType`; `inst.format(raw)` then renders the object's examples by calling the…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/31",
      "PublishedAt": "2026-09-24T19:46:01.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): evaluation-time math.js errors (unit/type mismatch, domain, dimension) surface as parse_failed with a syntax hint",
      "Excerpt": "### Server version\n\n0.4.1\n\n### mcp-ts-core version\n\n^0.12.3\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### Description\n\n`MathService.runWithTimeout` maps every non-timeout error to `parse_failed` (#19 carved out only Fraction conversion), with a recovery about balanced parentheses and function names. Most of those errors come from [math.js](https://mathjs.org/) evaluating an expression that already parsed — argument types, unit mismatches, arity,…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/29",
      "PublishedAt": "2026-08-22T20:49:12.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(config): default MCP_SESSION_MODE to stateless across env, Docker, and src",
      "Excerpt": "`Dockerfile` sets `ENV MCP_SESSION_MODE=\"stateless\"`, but `.env.example` carries a commented `# MCP_SESSION_MODE=stateful`, whose comment documents the value set as `stateful | stateless (default: stateful)`. The container and the same code run via `bunx`, `npm start`, or from source therefore resolve to different session modes — stateless in Docker, stateful everywhere else, since the framework schema defaults to `auto` and `auto` resolves to `stateful`.\n\nThe hosted deployment runs stateless…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/28",
      "PublishedAt": "2026-08-22T19:00:17.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): evaluate()/simplify()/derivative() inside an expression misdirect instead of pointing at the operation parameter",
      "Excerpt": "### Server version\n\n0.4.0\n\n### mcp-ts-core version\n\n0.10.10\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.x (hosted Docker image)\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nLinux (Docker)\n\n### Description\n\nAll three `operation` values — `evaluate`, `simplify`, `derivative` — are also blocked function names inside expressions (#18). A caller who writes the operation as a function call is misdirected:\n\n- Under `operation: \"evaluate\"`, the stub throws `Function \"derivative\" is disabled for…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/27",
      "PublishedAt": "2026-08-21T06:48:01.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): format() renders expression, result, and scope-key text as live Markdown",
      "Excerpt": "### Server version\n\n0.4.0\n\n### mcp-ts-core version\n\n^0.10.10\n\n### Runtime\n\nNode.js\n\n### Runtime version\n\nNode v26.5.0\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### Description\n\n`calculate`'s `format()` interpolates caller-controlled text into `content[]` Markdown as-is: the expression in a fixed single-backtick span, the result and scope-variable names as raw text. String, string-matrix, and object results render as links and HTML, a backtick closes the expression span early, and a multi-line…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/26",
      "PublishedAt": "2026-08-11T11:54:25.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): number-mode config stub breaks eigs, schur, intersect and skews tolerance comparisons",
      "Excerpt": "### Server version\n\n0.4.0\n\n### mcp-ts-core version\n\n^0.10.10\n\n### Runtime\n\nNode.js\n\n### Runtime version\n\nNode v26.5.0\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### Description\n\n`eigs`, advertised in `calculator://help`, fails for valid matrices in default `number` mode, and the same cause breaks or skews other functions. The hardened `number` instance replaces `config` with a throwing stub that carries none of math.js's config properties. math.js injects `config` into each factory when it is…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/25",
      "PublishedAt": "2026-08-11T11:54:24.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): notation aliases rewrite quoted string literals",
      "Excerpt": "### Server version\n\n0.4.0\n\n### mcp-ts-core version\n\n^0.10.10\n\n### Runtime\n\nNode.js\n\n### Runtime version\n\nNode v26.5.0\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### Description\n\n`calculate` rewrites standard-notation aliases inside quoted string literals. `normalizeNotation()` (#13) applies `NOTATION_ALIAS_PATTERN` to the raw expression, so `ln(` or an `arc*(` name inside a string changes before math.js parses it. Double- and single-quoted strings (math.js 15 accepts both) are affected, under…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/24",
      "PublishedAt": "2026-08-11T11:54:23.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(calculate): non-finite BigNumber, Unit, and object results bypass undefined_result",
      "Excerpt": "### Server version\n\n0.4.0\n\n### mcp-ts-core version\n\n^0.10.10\n\n### Runtime\n\nNode.js\n\n### Runtime version\n\nNode v26.3.1\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### Description\n\n`calculate` rejects non-finite results with `undefined_result`, but `containsNonFinite()` in `src/services/math/math-service.ts` only recognizes JS numbers, arrays, `Complex` (`re`/`im`), and matrices (`toArray()`). A non-finite value held in a `BigNumber` (scalar or matrix element), a `Unit`, or a plain object passes the…",
      "SourceUrl": "https://github.com/cyanheads/calculator-mcp-server/issues/21",
      "PublishedAt": "2026-07-02T13:32:10.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    }
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