2025-12-03 · Authensor

Backend engineers operate AI agents in environments with direct access to databases, cloud credentials, internal APIs, and production infrastructure. An unchecked agent can execute DROP TABLE, read SSH keys, or modify deployment manifests — all without malicious intent. SafeClaw by Authensor enforces deny-by-default action gating at the operation level, intercepting every shell command, file write, and network request before execution. Install with npx @authensor/safeclaw and define a policy file in under two minutes.

The Backend Threat Surface

Backend codebases differ from frontend in one critical way: the code runs with server-level privileges. AI agents assisting with backend work inherit those privileges unless explicitly constrained. The most dangerous backend-specific risks include:

Backend-Specific SafeClaw Policy

This policy targets the operations backend engineers care about most:

# safeclaw.yaml — backend engineer policy
version: 1
default: deny

rules:
- action: file_write
path: "src/*/.{ts,js,py,go,rs}"
decision: prompt
reason: "Review generated server code before write"

- action: file_read
path: ".env*"
decision: deny
reason: "Block agent from reading environment secrets"

- action: file_read
path: "*/credentials*"
decision: deny
reason: "Block access to credential files"

- action: file_write
path: "docker-compose*.yml"
decision: deny
reason: "Protect infrastructure definitions"

- action: shell_execute
command: "psql *"
decision: deny
reason: "Block direct database CLI access"

- action: shell_execute
command: "mysql *"
decision: deny
reason: "Block direct database CLI access"

- action: shell_execute
command: "sudo *"
decision: deny
reason: "No privilege escalation"

- action: shell_execute
command: "git push --force*"
decision: deny
reason: "Block force pushes"

- action: network_request
destination: "169.254.169.254"
decision: deny
reason: "Block cloud metadata SSRF"

- action: shell_execute
command: "npm test"
decision: allow
reason: "Tests are safe to run"

Every rule uses first-match-wins evaluation. The default: deny catches anything not explicitly addressed — so even novel attack vectors an agent discovers are blocked by default.

Protecting Database Access

The most common catastrophic AI agent incident in backend development is unintended database mutation. Agents generating migration scripts or debugging queries may execute destructive statements against a live connection. SafeClaw's shell execution gating blocks psql, mysql, mongosh, and other database CLIs entirely, forcing all database interaction through your application's controlled migration tooling.

For teams that need agents to interact with databases through application code, you can create scoped allow rules:

  - action: shell_execute
    command: "npm run migrate"
    decision: prompt
    reason: "Review migration before running"

Audit Trail for Compliance

SafeClaw's hash-chained audit log records every action attempt with timestamps, the action type, the policy decision, and the rule that matched. For backend teams subject to SOC 2 or ISO 27001, this provides the evidence trail auditors require — without sending any data to external services. The entire system is MIT-licensed, zero-dependency, and runs locally.

SafeClaw's 446 tests cover every policy evaluation edge case, including glob pattern matching, first-match-wins ordering, and hash chain integrity. The tool works identically whether your agent runs on Claude or OpenAI.


Related pages:

Try SafeClaw

Action-level gating for AI agents. Set it up in your browser in 60 seconds.

$ npx @authensor/safeclaw