Borrowing it
Nothing to install: this file belongs to groupdocs-signature/GroupDocs.Signature.Mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/groupdocs-signature/GroupDocs.Signature.Mcp/master/AGENTS.mdgit clone --depth 1 https://github.com/groupdocs-signature/GroupDocs.Signature.McpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/groupdocs-signature/groupdocs.signature.mcp/agents-md)<a href="https://agentmods.dev/instructions/groupdocs-signature/groupdocs.signature.mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/groupdocs-signature/groupdocs.signature.mcp/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/groupdocs-signature/groupdocs.signature.mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/groupdocs-signature/groupdocs.signature.mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01834 | $0.01834 |
| Opus 5 | $0.00917 | $0.00917 |
| Sonnet 5 | $0.00367 | $0.00367 |
| Haiku 4.5 | $0.00183 | $0.00183 |
Grade A, and why
GroupDocs.Signature.Mcp AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — Guide for AI coding agents
Brief orientation for AI coding agents (Claude Code, Copilot, Cursor, Aider, Amp, Codex) working in this repository.
What this repo is
A standalone MCP server for GroupDocs.Signature for .NET — exposes document signing, signature search, and signature verification operations as AI-callable tools via the Model Context Protocol.
Published to NuGet as GroupDocs.Signature.Mcp with the McpServer package type, and to ghcr.io/groupdocs-signature/signature-net-mcp + docker.io/groupdocs/signature-net-mcp as a container image.
MCP tools exposed
| Tool | Description |
|---|---|
Sign |
Signs a document (text / QR code / barcode / digital certificate); saves the signed file as <name>_signed.<ext> |
Verify |
Verifies signatures (text / QR / barcode / digital / all) and returns a validity report as JSON |
SearchTextSignatures |
Finds embedded text signatures with optional substring filter |
SearchBarcodes |
Finds barcode signatures with optional decoded-text filter; can return inline barcode images |
SearchQrCodes |
Finds QR code signatures with optional decoded-text filter; can return inline QR images |
SearchDigitalSignatures |
Finds digital certificate signatures and returns signer, issuer, validity, serial number |
SearchImageSignatures |
Finds embedded image signatures (logos, stamps, picture overlays) and returns them as base64 PNGs |
GetDocumentInfo |
Returns file type, page count, size, and per-page dimensions as JSON (read-only) |
All tools accept FileInput (resolved via IFileResolver) and an optional password for protected documents.
Folder layout
src/ ← all projects + sln + Directory.Build.props
GroupDocs.Signature.Mcp/
Program.cs ← host bootstrap + stdio transport
SignatureLicenseManager.cs ← applies GroupDocs.Total license
Tools/
SignTool.cs ← [McpServerTool] — Sign
VerifyTool.cs ← [McpServerTool] — Verify
SearchTextSignaturesTool.cs ← [McpServerTool] — SearchTextSignatures
SearchBarcodesTool.cs ← [McpServerTool] — SearchBarcodes
SearchQrCodesTool.cs ← [McpServerTool] — SearchQrCodes
SearchDigitalSignaturesTool.cs ← [McpServerTool] — SearchDigitalSignatures
SearchImageSignaturesTool.cs ← [McpServerTool] — SearchImageSignatures
GetDocumentInfoTool.cs ← [McpServerTool] — GetDocumentInfo
.mcp/
server.json ← NuGet.org reads this to generate mcp.json snippet
GroupDocs.Signature.Mcp.csproj ← PackageType=McpServer + ToolCommandName
GroupDocs.Signature.Mcp.Tests/ ← xUnit + Moq unit tests
GroupDocs.Signature.Mcp.sln
Directory.Build.props
build/
dependencies.props ← single source of truth for all versions
changelog/ ← one MD file per change (see changelog/README.md)
docker/
Dockerfile ← multi-stage, runtime on aspnet:10.0
docker-compose.yml
.github/workflows/ ← build_packages.yml, run_tests.yml, publish_prod.yml, publish_docker.yml
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 123 lines · 1,834 tokens per session scan A 10a3a2b4a555
GroupDocs.Signature.Mcp AGENTS.md is an instructions file published in the GitHub repository groupdocs-signature/GroupDocs.Signature.Mcp (0 stars, last pushed 3d ago), licensed MIT. It adds 1,834 tokens to every session, about $0.0092 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
plan-forge database.instructions.md
Database patterns for .NET — Dapper/EF Core, parameterized queries, migration strategy.
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.