Guam Code MCP Server

@pipeworx/guam-code

Guam Code Annotated (GCA) — Guam territorial statutes, by citation and by topic/keyword search. Keyless.

Part of Pipeworx — an MCP gateway connecting AI agents to 1784+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

Tools

• gu_statute(citation, title?) — full text of a GCA section by citation ("9 GCA 16.30" is Aggravated Murder Defined; "21 GCA 33101" is who may take an acknowledgment of a deed). Resolves the citation to its one chapter PDF, fetches it live, and extracts the text. title is only needed if not already embedded in citation.
• gu_search(query, title?, limit?) — topic/keyword search over section and chapter catchlines (not full statutory prose — see below), optionally restricted to one Title (1-22).

Auth

Keyless.

Source and shape

The Compiler of Laws (Judiciary of Guam, col.guamcourts.gov) publishes the GCA as ~800 per-CHAPTER PDFs, linked from one static HTML page: 22 collapsible Title panels, each listing its Chapters. There is no per-title listing, no search API, and no site-wide section index (confirmed live) — the same gap mcps/north-dakota-code hit for the Century Code. That page is baked ONCE (title/chapter/catchline/PDF URL) by scripts/bake-index.mjs.

Unlike North Dakota, the GCA index page does not also enumerate every section. But every sampled chapter PDF opens with its own embedded table of contents — a run of § <chapter>.<nn>. Catchline. headings — so scripts/bake-sections.mjs fetches all ~800 chapter PDFs once more and bakes a section-level catchline index (15,760 rows) from that TOC block. gu_search reads it; gu_statute never trusts it for the text it returns — it re-derives section boundaries fresh from the live PDF on every call.

Refresh path

Re-run both whenever the Compiler of Laws amends the GCA enough to be worth re-baking (run the chapter index first — the section bake reads it):

node mcps/guam-code/scripts/bake-index.mjs > mcps/guam-code/src/gu-index-data.ts
node --experimental-strip-types mcps/guam-code/scripts/bake-sections.mjs > mcps/guam-code/src/gu-section-data.ts

The section bake needs --experimental-strip-types because it imports the pack's own TypeScript extractor directly (no tsx/ts-node dependency in this repo) — nothing at runtime needs that flag, only this one offline script. Budget a few minutes: ~800 HTTP fetches at modest concurrency, as a courtesy to col.guamcourts.gov rather than because it rate-limits.

Both baked modules are combined by src/gu-baked-data.ts (a plain re-export) into the ONE data module workers/gateway/src/pack-baked-indexes.json points at for this pack — the gateway uploads its exports to KV at deploy and injects them as args._bakedIndex, never as a module-scope import (see index.ts's ensureIndex; fleet #2754 took the gateway down the one time a baked table was value-imported into every isolate).

Two citation conventions, both real

Newer, recodified titles (9 GCA, the Criminal & Correctional Code, adapted from the 1977 Model Penal Code) cite "chapter.section" with a dot — "9 GCA § 16.30" is Aggravated Murder. Older titles (e.g. 21 GCA Ch. 33, Proof and Acknowledgments of Instruments) concatenate chapter and a zero-padded section number with no separator — "21 GCA § 33101" is chapter 33, section 101. gu_statute accepts either form (see parseGuCitation in src/index.ts). The chapter/section boundary for the no-dot form is genuinely ambiguous from the digit string alone (chapter numbers vary in length); it is resolved by picking the longest known chapter number, for the given Title, that is a literal prefix of the citation — correct in every case sampled.

shared/src/pdf-text.ts needed real fixes — folded in, fork deleted (fleet #2904)

Guam's chapter PDFs originally defeated the shared extractor in ways it did not yet handle, and this pack was built the same week another pack (#2884, New Mexico) was independently editing that shared file — so the fixes initially lived in src/gu-pdf-extract.ts, a pack-local fork of shared/src/pdf-text.ts, with a loud header comment for whoever next touched the shared extractor to fold them in (nothing about them was Guam-specific). That fold-in happened in fleet #2904: the fork is gone, this pack now calls extractPdfText from @pipeworx/shared directly, and all three fixes below live in shared/src/pdf-text.ts itself, benefiting every other PDF pack (kentucky-code, north-dakota-code, wyoming-code, new-mexico-code), not just this one:

1. Literal strings weren't routed through the font decoder. Guam's producer (Neevia Document Converter, from Word) writes some non-WinAnsi subset fonts' text as parenthesized LITERAL strings ((abc)Tj) rather than hex (<...>Tj). The shared extractor's decodeRun passed a literal run through unchanged — correct for WinAnsi, but for these fonts the raw bytes are a tiny, arbitrary code space meaningful only via the font's own /ToUnicode CMap, which the shared code already had the machinery for (built for North Dakota) but only wired to the HEX-string path. Confirmed live: unfixed, § 16.10 extracted as control-character noise; fixed, it reads correctly.
2. A declared /Length a few bytes long. Several older chapter PDFs ("MS Word for Windows Document" producer — an earlier era than the Neevia-converted ones above) declare a /Length 1+ bytes longer than their actual deflate stream. Python's zlib tolerates the trailing byte silently; Node/Workers' strict DecompressionStream throws ERR_TRAILING_JUNK_AFTER_STREAM_END. Now retried with the stream's tail trimmed a byte at a time (up to 4) before giving up.
3. Crash-adjacent, found while baking the section index. The shared inflate() helper's two stream writes were fire-and-forget (void writer.write(...)); a malformed deflate stream (the same PDFs #2 above describes) rejected that promise as an UNHANDLED rejection, invisible to any caller's try/catch and fatal to the whole process — crashed scripts/bake-sections.mjs outright, mid-run. Fixed by attaching a no-op .catch() to each write/close; the real failure still surfaces through reader.read(), which the caller already handles.

One delta stayed pack-local, in src/gu-font-cmap-fix.ts, because it genuinely IS Guam-specific: one embedded symbol font per chapter PDF (...+WPTypographicSymbols, used only for curly quotes) carries a /ToUnicode CMap that maps its two codes to U+0041 ('A') and U+0040 ('@') instead of the left/right curly quote it visually renders as. Confirmed by eye: "ADirector of Public Safety@" in raw extraction is "“Director of Public Safety”" with those two codes substituted back — the obviously intended reading, reproduced by any PDF viewer's own copy-paste. This is a defect in Guam's own published PDF, not something a general-purpose extractor could derive, so it is passed into extractPdfText via its new fontCMapOverride option — a generic hook (match a font's own dictionary text, optionally return a replacement /ToUnicode map) with nothing Guam-specific about the mechanism itself, available to any future pack that hits a similarly broken source PDF.

Four capabilities — two available, two are not

• Citation lookup — available (gu_statute).
• Topic/keyword search — available (gu_search), over official CATCHLINES (section + chapter name), not full statutory prose. Coverage is best-effort: catchlines are derived from each chapter PDF's own table of contents rather than a separate official index, so an unusually formatted chapter can be under-represented.
• Amendments/enactment history — embedded in gu_statute's text field as the statute's own "SOURCE:" line (e.g. "Enacted 1977 as 16.30; amended by P.L. 14-125..."), not split out as a separate field — the GCA does not mark it up distinctly enough to parse reliably across both PDF eras sampled.
• Historical version (a section's text as it read before an amendment) — not available. col.guamcourts.gov serves the current text only; no per-year or per-session archive was found.

Known rough edge: page-furniture noise at a chapter's last section

gu_statute strips the repeating running header ("9 GCA CRIMES AND CORRECTIONS CH. 16 CRIMINAL HOMICIDE 1") and the "COL" stamp every page carries, self-derived from the chapter text's own first occurrence. Older-era PDFs (the "MS Word for Windows Document" producer, #2 above) sometimes extract that header with no inter-word spacing ("21GCAREAL PROPERTY" rather than "21 GCA REAL PROPERTY"), which the stripping regex — anchored on GCA preceded by whitespace — does not match. The statutory text itself is unaffected; only a section that happens to be the LAST one on a page, in one of these older chapters, can carry a trailing fragment of the next page's header/footer. Cosmetic, not a correctness defect.

Citations

Give citation as "9 GCA 16.30", "9 GCA § 16.30", "21 GCA 33101", or a bare section ("16.30" / "33101") with title passed separately.

Data sources

• https://col.guamcourts.gov/guam-code-annotated/guam-code-annotated — the Title/Chapter index (one collapsible page). Baked once into src/gu-index-data.ts; never fetched per call.
• https://col.guamcourts.gov/sites/default/files/9gc016.pdf — one chapter's full statutory text (here, 9 GCA Chapter 16, Criminal Homicide — swap the filename for any other chapter). gu_statute fetches this live on every call and extracts the target section out of it. The same ~800 chapter PDFs are also fetched once, offline, by scripts/bake-sections.mjs to build the catchline search index.

Both are plain, keyless, server-rendered HTML/PDF — no login, no JS, no rate-limit observed during development.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "guam-code": {
      "url": "https://gateway.pipeworx.io/guam-code/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/guam-code/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — ask_pipeworx, discover_tools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Both URLs reach the same gateway and the same 1784+ data sources. The only difference is which pack's tools are listed directly; ask_pipeworx reaches all of them from either one.

No MCP client? Call it over HTTP

curl -X POST https://gateway.pipeworx.io/v1/tools/gu_statute \
  -H 'Content-Type: application/json' \
  -d '{"citation":"9 GCA 16.30"}'

No account needed for the first calls. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/gu_statute. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.

Standalone (no gateway account)

This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:

{
  "mcpServers": {
    "guam-code": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-guam-code"]
    }
  }
}

Or run it directly to confirm it starts:

npx -y @pipeworx/mcp-guam-code

It speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call for only this pack's tools — none of the shared meta-tools the gateway connection above adds. Same source, same tools, no ask_pipeworx routing.

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:

ask_pipeworx({ question: "your question about Guam Code data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT