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Groupdocs Signature Mcp

groupdocs-signature/groupdocs.signature.mcp

Wraps the GroupDocs.Signature .NET library so AI agents can sign, verify, and search for signatures across PDF, Word, and other document formats. You get eight tools covering text signatures, QR codes, barcodes, digital certificates, and image stamps. The Sign tool writes a new file with your signature applied. Verify checks validity and returns a report. The Search family extracts decoded text, certificate metadata, or base64 images depending on signature type. Runs via dnx with no install step, as a global dotnet tool, or in Docker. Native Linux and macOS deployments need libgdiplus for glyph rendering, but the Docker image bundles it. Point it at a documents folder and you can automate signature workflows through Claude or Copilot prompts.

tools: 8
transport: STDIO
env vars: 5
last updated: Sep 6, 2026

Tools

8 tools

Public tool metadata for what this MCP can expose to an agent.

SignSign a document with a text, QR code, barcode, or digital certificate signature; saves the signed file as <name>_signed.<ext>

Sign a document with a text, QR code, barcode, or digital certificate signature; saves the signed file as <name>_signed.<ext>

No parameter schema in public metadata yet.

VerifyVerify signatures in a document (text, QR code, barcode, digital, or all) and return a validity report

Verify signatures in a document (text, QR code, barcode, digital, or all) and return a validity report

No parameter schema in public metadata yet.

SearchTextSignaturesFind embedded text signatures (stamps, labels, native text annotations) with optional substring filter

Find embedded text signatures (stamps, labels, native text annotations) with optional substring filter

No parameter schema in public metadata yet.

SearchBarcodesFind barcode signatures (Code39, Code128, EAN, etc.) with optional decoded-text filter and optional inline image

Find barcode signatures (Code39, Code128, EAN, etc.) with optional decoded-text filter and optional inline image

No parameter schema in public metadata yet.

SearchQrCodesFind QR code signatures with optional decoded-text filter and optional inline image

Find QR code signatures with optional decoded-text filter and optional inline image

No parameter schema in public metadata yet.

SearchDigitalSignaturesFind digital certificate signatures and return signer, issuer, serial number, validity status

Find digital certificate signatures and return signer, issuer, serial number, validity status

No parameter schema in public metadata yet.

SearchImageSignaturesFind embedded image signatures (logos, stamp images, picture overlays) and return them as base64 PNGs

Find embedded image signatures (logos, stamp images, picture overlays) and return them as base64 PNGs

No parameter schema in public metadata yet.

GetDocumentInfoReturn file type, page count, size, and per-page dimensions as JSON (no modification)

Return file type, page count, size, and per-page dimensions as JSON (no modification)

No parameter schema in public metadata yet.

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Configuration

GROUPDOCS_MCP_STORAGE_PATH

GROUPDOCS_MCP_OUTPUT_PATH

GROUPDOCS_LICENSE_PATH

GROUPDOCS_METERED_PUBLIC_KEY

GROUPDOCS_METERED_PRIVATE_KEY

Readme

GroupDocs.Signature MCP Server

MCP server that exposes GroupDocs.Signature as AI-callable tools for Claude, Cursor, GitHub Copilot, and other MCP agents.

View the full README on GitHub

Details

Repository: github.com/groupdocs-signature/groupdocs.signature.mcp
Categories: Documents & Knowledge, Search & Web Crawling
Package: GroupDocs.Signature.Mcp
Transport: STDIO
Registry: MCP registry, active

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