Adversary MCP Server
A security-focused server that integrates with Cursor IDE to provide real-time vulnerability detecti...
Open the FastMCP connection interface
- Click the "Install Now" button in your FastMCP UI to open the connection / environment variables form.
Prepare to add the LLM provider keys (these are the primary ENVs you will add)
- The Adversary MCP server uses these environment variable names in its CLI and MCP integration:
OPENAI_API_KEYANTHROPIC_API_KEY
- (Optional/secondary ENVs you can add if needed)
ADVERSARY_LOG_LEVEL(e.g.,INFO)ADVERSARY_WORKSPACE_ROOT(path to override workspace root)
- The Adversary MCP server uses these environment variable names in its CLI and MCP integration:
Create / copy an OpenAI API key
- Sign in or sign up at the OpenAI Platform (platform.openai.com).
- Open the API keys page (Dashboard → API keys) and click "Create new secret key".
- Copy the generated secret immediately (it is shown only once). (platform.openai.com)
Paste the OpenAI key into FastMCP
- In the FastMCP connection form, add an ENV with name
OPENAI_API_KEY. - Paste the secret key as the value.
- Save/confirm the connection entry in the FastMCP interface.
- In the FastMCP connection form, add an ENV with name
Create / copy an Anthropic (Claude) API key
- Sign in or sign up to the Anthropic Console.
- Generate an API key from the Console (the Anthropic docs show creating and exporting the key as
ANTHROPIC_API_KEY). - Copy the generated key immediately (store it securely; the Console shows keys only at creation). (platform.claude.com)
Paste the Anthropic key into FastMCP
- In the FastMCP connection form, add an ENV with name
ANTHROPIC_API_KEY. - Paste the Anthropic key as the value.
- Save/confirm the connection entry in the FastMCP interface.
- In the FastMCP connection form, add an ENV with name
(Optional) Add the other Adversary ENVs in FastMCP
- If you want logging or workspace overrides, add:
ADVERSARY_LOG_LEVEL= e.g.,INFOADVERSARY_WORKSPACE_ROOT= full path to your workspace root
- Add each as a separate ENV entry in the FastMCP form and save.
- If you want logging or workspace overrides, add:
Verify the MCP server picks up the keys
- After saving ENVs in FastMCP, run the Adversary CLI or MCP status check from your environment (or via the MCP tool) to verify the LLM is configured:
- Example CLI checks:
adv configure --llm-provider openai --llm-api-key $OPENAI_API_KEYoradv status
- Example CLI checks:
- Run a quick scan (e.g.,
adv scan-file path/to/file.py --use-llm --use-validation) to ensure the LLM integration is active.
- After saving ENVs in FastMCP, run the Adversary CLI or MCP status check from your environment (or via the MCP tool) to verify the LLM is configured:
Security & best practices
- Treat API keys as secrets: do NOT commit them to source control.
- Store long-term secrets in a secrets manager (AWS Secrets Manager, HashiCorp Vault, 1Password/Bitwarden, etc.) and only paste into FastMCP when needed.
- If a key is ever exposed, revoke it in the provider console and generate a new one immediately. (platform.openai.com)
If you need help
- Consult the Adversary README/CLI (
adv configure setupandadv status) for configuring providers and confirming settings, then re-check the FastMCP ENVs if the server reports missing credentials.
- Consult the Adversary README/CLI (
How to Install Adversary MCP Server
Install Adversary MCP Server MCP server with one click through FastMCP. Choose your preferred AI development tool below:
Claude Desktop
Click "Claude Desktop" in Quick Start
Cursor IDE
Click "Cursor IDE" in Quick Start
VS Code
Click "VS Code" in Quick Start
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Configuration for
Environment Variables
Please provide values for the following environment variables:
HTTP Headers
Please provide values for the following HTTP headers:
started!
The MCP server should open in . If it doesn't open automatically, please check that you have the application installed.
Copy and run this command in your terminal:
Make sure Gemini CLI is installed:
Visit Gemini CLI documentation for installation instructions.
Make sure Claude Code is installed:
Visit Claude Code documentation for installation instructions.
Installation Steps:
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