sendgrid-mcp

The server uses environment variables (MCP_TOKEN, SENDGRID_API_KEY) for secrets, which is good practice. It implements basic Bearer token authorization for the /mcp endpoint. No direct use of 'eval' or similar dangerous functions is observed. Input schemas are defined with 'additionalProperties: False', which helps limit unexpected arguments. The main security considerations are ensuring the SENDGRID_API_KEY has appropriate, least-privileged permissions and securing the MCP_TOKEN from unauthorized access. The conversion of tool results to 'str(data)' before sending to the client could potentially expose raw SendGrid API responses, which may contain sensitive details depending on the API response and the permissions of the key.