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docgen-mcp-server MCP Server

Render HTML/markdown to PDF, export rows to xlsx, and fill AcroForm PDFs.

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

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Connect

Published as @cyanheads/docgen-mcp-server on npm. Runs locally.

Known issues

14 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 11.

Most discussed

docs(design.md): stale downloadUrl references in delivery model section

Description

docs/design.md has 9+ references to downloadUrl as an active delivery mechanism — lines 141–142, 259–260, 308–309, 390, and 434 describe downloadUrl as populated from MCP_PUBLIC_URL in HTTP/hosted mode. This was suppressed in the 0.1.1 working tree (#2): buildEnvelope no longer sets the field, initDocumentStore() no longer takes an AppConfig, and the buildDownloadUrl() private method was removed entirely.

The design doc is now inconsistent with the implementatio

Read the thread · 2026-06-28 · closed · 2 comments

bug(docgen_render_pdf): reject data unless template is the active source

Server version

0.1.1

mcp-ts-core version

0.10.9

Runtime

Node.js

Runtime version

Node v26.3.1

Transport

HTTP (Streamable HTTP)

OS

macOS / Darwin 25.1.0 arm64

Description

docgen_render_pdf says callers must provide exactly one source: { html }, { markdown }, or { template, data }. The handler counts only html, markdown, and template, so { html, data } or { markdown, data } succeeds and silently ignores data.

Steps to reproduce

  1. S

Read the thread · 2026-06-27 · closed · 2 comments

bug(docgen_fill_form): accept line-wrapped base64 PDFs

Server version

0.1.1

mcp-ts-core version

0.10.9

Runtime

Node.js

Runtime version

Node v26.3.1

Transport

stdio

OS

macOS / Darwin 25.1.0 arm64

Description

docgen_fill_form rejects a valid base64-encoded PDF when the base64 string contains line breaks. Base64 produced by CLIs, MIME encoders, or copy/paste workflows is often wrapped; the decoder currently trims only the ends and then applies a no-whitespace regex to the whole string.

Steps to reproduce

Read the thread · 2026-06-27 · closed · 2 comments

bug(docgen_export_spreadsheet): validate worksheet names before calling ExcelJS

Server version

0.1.1

mcp-ts-core version

0.10.9

Runtime

Node.js

Runtime version

Node v26.3.1

Transport

HTTP (Streamable HTTP)

OS

macOS / Darwin 25.1.0 arm64

Description

docgen_export_spreadsheet does not validate worksheet names against ExcelJS/Excel constraints before rendering. Invalid and duplicate names throw through as generic tool errors with no declared reason or recovery, while over-31-character names are silently truncated by ExcelJS and the re

Read the thread · 2026-06-27 · closed · 2 comments

bug(documentId): malformed ids surface storage validation internals

Server version

0.1.1

mcp-ts-core version

0.10.9

Runtime

Node.js

Runtime version

Node v26.3.1

Transport

HTTP (Streamable HTTP)

OS

macOS / Darwin 25.1.0 arm64

Description

docgen_get_document and the docgen://document/{documentId} resource pass unvalidated document IDs into the tenant state key. IDs containing storage-invalid characters or .. bypass the declared document_expired contract and return storage validation errors with internal storage key/

Read the thread · 2026-06-27 · closed · 1 comment

Most recent

feat(docgen): serve rendered documents over HTTP and populate downloadUrl

Server version

0.2.1

Description

DocumentEnvelope declares a downloadUrl field but never populates it — src/services/document/types.ts describes it as "Reserved for a future HTTP download route; not emitted in v1 (the field is always absent). Fetch the bytes via resourceUri or inlineBase64 instead."

That leaves two delivery paths, and both hand the caller base64:

  • inlineBase64, present when the artifact is at or under DOCGEN_INLINE_MAX_BYTES (default 5 MB)
  • resourceUri

Read the thread · 2026-08-10 · open · 0 comments

docs(docgen_export_spreadsheet): columns describe says "first row keys" but derives from all rows

Server version

0.2.1

mcp-ts-core version

0.10.9

Runtime

Bun

Runtime version

1.3.11

Transport

stdio

OS

macOS

Description

In render-types.ts, SheetSchema.columns is described as: "Optional ordered column spec. When omitted, columns derive from the first row keys." But RenderService.resolveColumns derives them from the union of all rows' keys (for (const row of sheet.rows) for (const k of Object.keys(row)) keys.add(k)), not just the first row's

Read the thread · 2026-06-30 · open · 0 comments

security(docgen_fill_form): SSRF guard bypassable via DNS rebinding (resolve/fetch TOCTOU)

Server version

0.2.1

mcp-ts-core version

0.10.9

Runtime

Bun

Runtime version

1.3.11

Transport

http

OS

macOS

Description

fetch-guard.ts validates the destination by resolving the hostname with dns.lookup(host, { all: true }) and rejecting any private/loopback/link-local/metadata IP, then calls fetch(url). Because fetch performs its own DNS resolution when it connects, the IP that was vetted and the IP actually connected to can differ — a time-of

Read the thread · 2026-06-30 · open · 0 comments

feat(docgen_fill_form): add docgen_list_form_fields to discover AcroForm field names

docgen_fill_form requires exact, case-sensitive AcroForm field names, but the server offers no way to discover them — the tool description itself says to "obtain them from whoever supplied the form, since docgen does not expose them." An agent that has the PDF but not a field list must guess names, read the misses back from unmatchedFields[], and retry — and even then it learns only which guesses were wrong, never what the real names are.

Proposal

Add a read-only `docgen_list_form_field

Read the thread · 2026-06-30 · open · 0 comments

bug(docgen_render_pdf): non-WinAnsi characters silently replaced with "?" and not flagged degraded

Server version

0.2.1

mcp-ts-core version

0.10.9

Runtime

Bun

Runtime version

1.3.11

Transport

stdio

OS

macOS

Description

The lightweight PDF engine embeds the WinAnsi StandardFonts (Helvetica), which only encodes U+0020–U+00FF. sanitizeForFont (src/services/document/render-service.ts) maps any code point outside that range to "?" (with a few smart-punctuation exceptions) so pdf-lib's drawText never throws. That keeps the engine robust, but it m

Read the thread · 2026-06-30 · open · 0 comments

bug(docgen_export_spreadsheet): boolean column coerces string "false"/"0"/"no" to true

Server version

0.2.1

mcp-ts-core version

0.10.9

Runtime

Bun

Runtime version

1.3.11

Transport

stdio

OS

macOS

Description

docgen_export_spreadsheet coerces cell values per the column type, but the boolean branch uses Boolean(value) (coerceCell in src/services/document/render-service.ts). Every non-empty string is truthy in JS, so a string "false", "0", "no", or "off" is written to the cell as true — silently inverting the data. Unl

Read the thread · 2026-06-30 · open · 0 comments

See all 14 reports Pod holds for docgen-mcp-server.

Firsthand observations

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