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  "Name": "census-mcp-server",
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  "Issues": [
    {
      "Title": "feat(census_get_variable): make predicate values discoverable",
      "Excerpt": "### Use case\n\n`census_query_data` and `census_compare_geographies` accept a `predicates` map, and when a dataset declares filter dimensions the query left unset the response notice names them by code and label — `NAICS2017 (2017 NAICS code)`, `LFO (Legal form of organization code)`, `EMPSZES (Employment size of establishments code)`. A caller who reads that notice and wants to filter then has to supply a value, and no tool here can tell them what values are accepted.\n\nWhat `variables.json` publi",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/23",
      "PublishedAt": "2026-07-31T18:50:48.000Z",
      "State": "closed",
      "Comments": 3,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(census_resolve_geography): resolve CBSA, CSA, and economic place names to codes",
      "Excerpt": "### Use case\n\n`census_resolve_geography` turns a place name into FIPS codes for four levels: `state`, `county`, `place`, `tract`. The business datasets publish levels outside that set, so a caller who has a name rather than a code cannot reach them.\n\nPer-dataset levels, from each dataset's own `geography.json`:\n\n| Level | `cbp` | `ecnbasic` | `nonemp` | Resolvable from a name today |\n|:------|:-----:|:----------:|:--------:|:---|\n| `us` | ✅ | ✅ | ✅ | n/a — the `for=` value is always `1` |\n| `sta",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/22",
      "PublishedAt": "2026-07-31T18:50:14.000Z",
      "State": "open",
      "Comments": 3,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_query_data): string-valued variables such as GEO_ID return estimate null, indistinguishable from missing data",
      "Excerpt": "### Server version\n\n0.3.0\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\n`CensusApiService.parseResponse` coerces every requested variable with `Number(rawValue)` regardless of the variable's `predicateType`. A variable the Census publishes as a string — `GEO_ID` on the ACS datasets, `INDLEVEL` on `nonemp` and `ecnbasic`, `SUMLEVEL` — coerces to `NaN`, which is stored as the `estimate` and serialized to J",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/29",
      "PublishedAt": "2026-07-31T22:39:31.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_list_datasets, census_query_data): pep/charv advertises three vintages the API does not publish, and the miss surfaces as raw 404 HTML",
      "Excerpt": "### Server version\n\n0.3.0\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\n`census_list_datasets` advertises `pep/charv` as having `available_years: [2020, 2021, 2022, 2023]`, but 2023 is the only vintage the Census API publishes. 2020 through 2022 are values of the dataset's own `YEAR` dimension inside the 2023 vintage, not separate vintages — `https://api.census.gov/data/2021/pep/charv/variables.json` is ",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/28",
      "PublishedAt": "2026-07-31T22:39:09.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_query_data): pep/charv returns two indistinguishable rows per geography when YEAR is unset",
      "Excerpt": "### Server version\n\n0.2.0\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\nRelated: #24\n\n`pep/charv` declares `YEAR` a required filter dimension and defaults it to 2020 on the 2023 vintage. Two records share that default — an estimates base and an estimate — so a query that omits `YEAR` returns two rows for one geography carrying different numbers.\n\nNothing on the rows separates them. `YEAR` is the one dime",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/27",
      "PublishedAt": "2026-07-31T21:28:21.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_list_predicate_values): dec/ddhca POPGROUP lists codes the dataset serves nothing for",
      "Excerpt": "### Server version\n\n0.2.0\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\nRelated: #24\n\n`census_list_predicate_values` reads a dimension's codes straight from the `values.item` map in `variables.json` when the dataset publishes one, and returns them unqualified. On `dec/ddhca` that map contains `001 — Total population`, a code the dataset serves nothing for at any geography level. It is also the single cod",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/26",
      "PublishedAt": "2026-07-31T21:27:57.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_query_data, census_compare_geographies): an unpadded FIPS code silently returns no_data",
      "Excerpt": "### Server version\n\n0.1.14\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nstdio\n\n### Description\n\nThe Census Data API matches FIPS codes literally, so `for=county:51` and `for=county:051` are different queries — the first returns HTTP 204. `census_query_data` and `census_compare_geographies` pass `parent_fips`, `county_fips`, `geography_fips`, `within`, and `within_county` straight through as bare `z.string()` with no pattern and no padding, s",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/25",
      "PublishedAt": "2026-07-31T20:22:18.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_query_data): dec/ddhca returns one population group's count where a total is implied",
      "Excerpt": "### Server version\n\n0.1.13\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\n`dec/ddhca` marks `POPGROUP` (Race/Ethnic Group) `required` in its `variables.json`, and the Census API answers a query that omits it by returning the *first* population group rather than a total. A `census_query_data` call for `T01001_001N` at `state:06` returns **9,653,100** — the count for `POPGROUP=1002`, \"European alone\" — pres",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/24",
      "PublishedAt": "2026-07-31T19:20:01.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(datasets): normalize dataset-code case and resolve bare acs5/acs1 shorthand to canonical paths",
      "Excerpt": "`census_query_data`, `census_compare_geographies`, and `census_list_geographies` reject `\"acs5\"` and `\"ACS5\"` with `Unknown dataset` even though each maps unambiguously to `acs/acs5`. Callers routinely write the bare leaf or uppercase form; the hint (call `census_list_datasets`) recovers them, but the mapping is deterministic and the round-trip is avoidable.\n\n## Proposal\n\nNormalize dataset codes before lookup, on every tool with a `dataset` parameter:\n\n1. Lowercase the input (`ACS5` → `acs5`, `A",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/32",
      "PublishedAt": "2026-08-21T06:15:48.000Z",
      "State": "open",
      "Comments": 0,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_resolve_geography): spelled-out state suffix never splits, and the no_match hint appends \", WA\" to the full input",
      "Excerpt": "### Server version\n\n0.3.2\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.x\n\n### Transport\n\nhttp\n\n### Description\n\nRelated: #15\n\n`census_resolve_geography` fails on `\"<name>, <spelled-out state>\"` inputs. `splitStateSuffix` (`src/services/geography/geography-service.ts`) only recognizes a trailing two-letter abbreviation (`/,?\\s+([A-Z]{2})\\s*$/`), so a spelled-out state stays inside the name and the TIGERweb `NAME LIKE '%…%'` query includes the state text, which ",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/31",
      "PublishedAt": "2026-08-21T06:15:46.000Z",
      "State": "open",
      "Comments": 0,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_resolve_geography): prior-vintage CBSA names fail to resolve despite an unambiguous city prefix",
      "Excerpt": "### Server version\n\n0.3.2\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Transport\n\nhttp\n\n### Description\n\n`census_resolve_geography` matches CBSA names against the current OMB delineation only. A caller supplying the *previous* official name for a metro area gets `no_match`, even though the leading tokens identify exactly one CBSA.\n\nOMB renamed many CBSAs in the 2023 delineation. The prior names were official for roughly a decade and are what most reference material — and most model pr",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/30",
      "PublishedAt": "2026-08-02T11:50:31.000Z",
      "State": "open",
      "Comments": 0,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_query_data, census_compare_geographies): a parent the level does not accept still surfaces a raw 400",
      "Excerpt": "### Server version\n\n0.1.12\n\n### mcp-ts-core version\n\n0.11.0\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14\n\n### Transport\n\nHTTP\n\n### OS\n\nmacOS\n\n### Description\n\nRelated: #19\n\n`CensusApiService.checkGeography` pre-validates that every parent a geography level *requires* was supplied, but not that every parent the caller *supplied* is one the level accepts. Passing `parent_fips` to `census_query_data` — or `within` to `census_compare_geographies` — for a level with no state parent builds an `i",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/21",
      "PublishedAt": "2026-07-31T18:12:33.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(census_resolve_geography): add a county input so a tract name can be pinned to one county",
      "Excerpt": "`census_resolve_geography` takes only `name` and `geography_type`, but a census tract name is unique only within a county — not within a state. A tract name shared by two counties therefore has no input that can narrow it, so the call is unresolvable through this tool no matter how the caller phrases the name.\n\nRelated: #15, #18\n\n### Steps to reproduce\n\n1. Call `census_resolve_geography` with `{ \"name\": \"Census Tract 104.01, AR\" }`\n2. `ambiguous_name` comes back with two candidates — Arkansas co",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/20",
      "PublishedAt": "2026-07-31T17:20:25.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_query_data): missing-parent and no-data errors give poor recovery guidance",
      "Excerpt": "### Server version\n\n0.1.11\n\n### mcp-ts-core version\n\n0.10.9\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.11\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\nTwo error paths in `census_query_data` (and `census_compare_geographies`) hand the model unhelpful recovery guidance:\n\n1. **Missing parent → opaque upstream error.** Querying a sub-state level without its required parent (e.g. `geography_level: \"tract\"` with no `parent_fips`) surfaces a raw `Fetch failed for … Status: 400` (`upstrea",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/19",
      "PublishedAt": "2026-06-30T16:09:51.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_resolve_geography): ambiguous_name hint omits state, candidates render as \"Name, \"",
      "Excerpt": "### Server version\n\n0.1.11\n\n### mcp-ts-core version\n\n0.10.9\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.11\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\nWhen a name matches more than 3 geographies at the county/place/tract level, `census_resolve_geography` throws `ambiguous_name` with a `recovery.hint` of the form `Use one of: \"<name>, <state>\"`. For non-state layers the state abbreviation comes from `STUSAB`, which is **not in those layers' `outFields`** (only `NAME,STATE,COUNTY` e",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/18",
      "PublishedAt": "2026-06-30T16:09:49.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(census_search_variables, census_get_variable): MOE inference fabricates non-existent codes for non-ACS datasets",
      "Excerpt": "### Server version\n\n0.1.11\n\n### mcp-ts-core version\n\n0.10.9\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.11\n\n### Transport\n\nstdio\n\n### OS\n\nmacOS\n\n### Description\n\nThe variable cache infers an `M`-suffix margin-of-error sibling for **every** code ending in `E`, then synthesizes a phantom variable entry for it. This is correct for ACS (`B…E` estimate / `B…M` MOE, where M codes are queryable but omitted from `variables.json`) but wrong for PEP and decennial datasets, which have no such pairing. ",
      "SourceUrl": "https://github.com/cyanheads/census-mcp-server/issues/17",
      "PublishedAt": "2026-06-30T16:09:46.000Z",
      "State": "closed",
      "Comments": 2,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    }
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