codeguard-0-mcp-security Cursor ruleA
codeguard-0-mcp-security from santosomar/ai-agents-for-cybersecurity is a Cursor rule: instructions the Cursor agent follows in that repo.
mdr add santosomar/ai-agents-for-cybersecurity/.cursor/rules/codeguard-0-mcp-security.mdc@v1.5.0Pins v1.5.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- Cursor rule
- Repository
- santosomar/ai-agents-for-cybersecurity
- Path
.cursor/rules/codeguard-0-mcp-security.mdc- Versions recorded
- 1
- Latest version
- v1.5.0, committed Oct 12, 2026
- Size
- 4,356 bytes
- Repository stars
- 251
- License
- BSD-3-Clause
MCP (Model Context Protocol) Security based on CoSAI MCP Security guidelines.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
rule_id: codeguard-0-mcp-security # MCP (Model Context Protocol) Security Guidelines NEVER deploy MCP servers or clients without implementing proper security controls. ### Workload Identity and Authentication - Use SPIFFE/SPIRE for cryptographic workload identities - SPIFFE (Secure Production Identity Framework For Everyone) provides a standard for service identity - SPIRE (SPIFFE Runtime Environment) issues and rotates short-lived cryptographic identities (SVIDs) ### Input and Data Sanitization - Validate ALL inputs using allowlists at every trust boundary - Sanitize file paths through canonicalization - Use parameterized queries for database operations - Apply context-aware output encoding (SQL, shell, HTML) - Sanitize tool outputs: return only minimum fields, redact all PII and sensitive data - Treat ALL inputs, tool schemas, metadata, prompts, and resource content as untrusted input - Deploy prompt injection detection systems - Use strict JSON schemas to maintain boundaries between instructions and data ### Sandboxing and Isolation - Design MCP servers to execute with least privilege …
Read the whole file at its exact version.
How to install
mdr add santosomar/ai-agents-for-cybersecurity/.cursor/rules/codeguard-0-mcp-security.mdc@sha256:61f64a5fc3f94a83The line at the top of this page pins the label v1.5.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_shirss6g2puothm2)
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Versions
The registry has recorded 1 version of this file, committed on Oct 12, 2026.
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (4356 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
santosomar/ai-agents-for-cybersecurity · 251 stars · license BSD-3-Clause · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_shirss6g2puothm2 GET https://markdownregistry.com/api/v1/resolve?ref=santosomar/ai-agents-for-cybersecurity/.cursor/rules/codeguard-0-mcp-security.mdc GET https://markdownregistry.com/api/v1/blob/61f64a5fc3f94a83783276c521af6b67bab968472487b1d4526f1dda53f231c8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: Cursor rules vs AGENTS.md · which agent file does what.