mcp-bastion-langchain

Security middleware for LangChain powered by MCP-Bastion.

Protects your LangChain agents from prompt injection, PII leakage, and resource exhaustion.

Install

pip install mcp-bastion-langchain

Usage

Callback (automatic protection)

from langchain_openai import ChatOpenAI
from mcp_bastion_langchain import BastionSecurityCallback

llm = ChatOpenAI(callbacks=[BastionSecurityCallback()])
llm.invoke("Hello, what is MCP?")

Tool decorator

from mcp_bastion_langchain import secure_tool

@secure_tool
def my_tool(query: str) -> str:
    return f"Result for {query}"

Features

  • Content filtering on all LLM prompts and tool inputs
  • Rate limiting per caller
  • Prompt injection detection
  • PII redaction

License

Same terms as the MCP-Bastion project: see LICENSE. Non-commercial use is free with required citation/attribution; copyright terms apply. Commercial use as defined in the License may need a separate agreement (COMMERCIAL_LICENSE.md).

Project links

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  • Released:
Latest release

1 maintainer

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Avatar for vaquarkhan from gravatar.com vaquarkhan

Credits

Author: Vaquar Khan

GitHub Statistics

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The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

Other/Proprietary License (See LICENSE and COMMERCIAL_LICENSE.md in the MCP-Bastion repository.)

Requires

Python >=3.10

Provides Extra

dev

Tags

bastion langchain llm mcp pii prompt-injection security

Classifiers

Report project as malware

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