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MCP verified MIT Self-run

Mcp Workbench

mcp-andrii2g-mcp-workbench · by andrii2g

Self-hosted MCP server workbench for connection testing, tool discovery, and invocation

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Install

$ agentstack add mcp-andrii2g-mcp-workbench

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

MCP Workbench

MCP Workbench is a lightweight, self-hosted dashboard for testing Model Context Protocol servers. Register local stdio or remote HTTP servers, inspect their tools, and invoke tools manually without an LLM or model-provider account.

Features

  • Stdio and Streamable HTTP MCP transports
  • Server connection, ping, and runtime inspection
  • Tool discovery, schema inspection, and invocation
  • Versioned local JSON registry
  • Environment-based secret references
  • Static browser UI and versioned HTTP API
  • .NET 10 Native AOT publishing

Screenshots

Click a thumbnail to view the full-size screenshot.

Quick Start

Requires the .NET 10 SDK.

git clone https://github.com/andrii2g/mcp-workbench.git
cd mcp-workbench
dotnet restore McpWorkbench.slnx --force-evaluate
dotnet run --project src/McpWorkbench

Keep that terminal running, then open http://127.0.0.1:5070.

For native executable, Docker, API-key, and first-server instructions, see the [Quick Start guide](docs/QUICKSTART.md).

Documentation

  • [Quick Start](docs/QUICKSTART.md)
  • [Configuration and persistence](docs/CONFIGURATION.md)
  • [HTTP API](docs/API.md)
  • [Architecture](docs/ARCHITECTURE.md)
  • [MCP integration](docs/MCP-INTEGRATION.md)
  • [Security](docs/SECURITY.md)
  • [Native AOT](docs/NATIVE-AOT.md)
  • [Testing](docs/TESTING.md)

Examples are available in [samples/servers.example.json](samples/servers.example.json) and [requests/McpWorkbench.http](requests/McpWorkbench.http).

License

Licensed under the [MIT License](LICENSE). Copyright (c) 2026 andrii2g.

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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