| Name | mcp-fuzzer JSON |
| Version |
0.1.0
JSON |
| download |
| home_page | None |
| Summary | MCP server fuzzer client and utilities |
| upload_time | 2025-08-03 10:50:05 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.9 |
| license | MIT License
Copyright (c) 2025 Prince Roshan
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
|
| keywords |
mcp
fuzzing
testing
json-rpc
|
| VCS |
 |
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
|
| coveralls test coverage |
No coveralls.
|
# MCP Fuzzer
A CLI tool for fuzzing MCP server tools using JSON-RPC 2.0, with pretty output using [rich](https://github.com/Textualize/rich).
## Features
- Discovers available tools from an MCP server endpoint
- Fuzzes each tool with random/edge-case arguments using Hypothesis
- Reports results and exceptions in a rich terminal table
## Installation
```bash
pip install -e .
```
## Usage
You can run the fuzzer as a CLI tool after install:
```bash
mcp-fuzzer-client --url http://localhost:8000/mcp/ --runs 10
```
Or directly with Python:
```bash
python -m mcp_fuzzer_client --url http://localhost:8000/mcp/ --runs 10
```
- `--url`: URL of the MCP server's JSON-RPC endpoint
- `--runs`: Number of fuzzing runs per tool (default: 10)
## Output
Results are shown in a colorized table, including the number of exceptions and an example error if any.
---
**Project dependencies are managed via `pyproject.toml`.**
Test result of fuzz testing of https://github.com/modelcontextprotocol/python-sdk/tree/main/examples/servers/simple-streamablehttp-stateless
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