longline 0.15.4

System-installed safety hook for Claude Code
Documentation 
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# Secrets: exposure and manipulation rules

allowlists:
  commands: []

rules:
  # ============================================================
  # CRITICAL: Secrets exposure
  # ============================================================
  - id: cat-env-file
    level: critical
    match:
      command:
        any_of: [cat, less, more, head, tail, bat]
      args:
        any_of: [".env", ".env.local", ".env.production", ".env.staging",
                  ".env.development", ".envrc", "**/.env", "**/.env.local",
                  "**/.env.production"]
    decision: deny
    reason: "Reading sensitive environment file"

  - id: cat-ssh-key
    level: critical
    match:
      command:
        any_of: [cat, less, more, head, tail, bat]
      args:
        any_of: ["~/.ssh/id_*", "~/.ssh/id_rsa", "~/.ssh/id_ed25519",
                  "~/.ssh/id_ecdsa", "id_rsa", "id_ed25519", "id_ecdsa"]
    decision: deny
    reason: "Reading SSH private key"

  - id: cat-aws-creds
    level: critical
    match:
      command:
        any_of: [cat, less, more, head, tail, bat]
      args:
        any_of: ["~/.aws/credentials", "~/.aws/config"]
    decision: deny
    reason: "Reading AWS credentials"

  - id: cat-kube-config
    level: critical
    match:
      command:
        any_of: [cat, less, more, head, tail, bat]
      args:
        any_of: ["~/.kube/config"]
    decision: deny
    reason: "Reading Kubernetes config"

  - id: cp-secrets
    level: critical
    match:
      command: cp
      args:
        any_of: [".env", ".env.local", ".env.production", ".env.staging",
                  ".env.development", ".envrc", "**/.env", "**/.env.local",
                  "~/.ssh/id_*", "~/.ssh/id_rsa", "~/.ssh/id_ed25519",
                  "~/.ssh/id_ecdsa", "id_rsa", "id_ed25519", "id_ecdsa",
                  "~/.aws/credentials", "~/.aws/config",
                  "~/.kube/config"]
    decision: ask
    reason: "Copying sensitive file"

  - id: mv-secrets
    level: critical
    match:
      command: mv
      args:
        any_of: [".env", ".env.local", ".env.production", ".env.staging",
                  ".env.development", ".envrc", "**/.env", "**/.env.local",
                  "~/.ssh/id_*", "~/.ssh/id_rsa", "~/.ssh/id_ed25519",
                  "~/.ssh/id_ecdsa", "id_rsa", "id_ed25519", "id_ecdsa",
                  "~/.aws/credentials", "~/.aws/config",
                  "~/.kube/config"]
    decision: ask
    reason: "Moving sensitive file"

  - id: tee-secrets
    level: critical
    match:
      command: tee
      args:
        any_of: [".env", ".env.local", ".env.production", ".env.staging",
                  ".env.development", ".envrc", "**/.env", "**/.env.local",
                  "~/.ssh/id_*", "~/.ssh/id_rsa", "~/.ssh/id_ed25519",
                  "~/.ssh/id_ecdsa",
                  "~/.aws/credentials", "~/.aws/config",
                  "~/.kube/config"]
    decision: deny
    reason: "Writing to sensitive file via tee"

  - id: rm-secrets
    level: critical
    match:
      command: rm
      args:
        any_of: [".env", ".env.local", ".env.production", ".env.staging",
                  ".env.development", ".envrc",
                  "~/.ssh/id_*", "~/.ssh/id_rsa", "~/.ssh/id_ed25519",
                  "~/.ssh/id_ecdsa", "~/.ssh/authorized_keys",
                  "~/.aws/credentials", "~/.aws/config",
                  "~/.kube/config"]
    decision: ask
    reason: "Deleting sensitive file"

  # ============================================================
  # CRITICAL: Secrets exposure via stdin redirect
  # ============================================================
  - id: stdin-redirect-env-file
    level: critical
    match:
      redirect:
        op: "<"
        target:
          any_of: [".env", ".env.local", ".env.production", ".env.staging",
                    ".env.development", ".envrc", "**/.env", "**/.env.local",
                    "**/.env.production"]
    decision: deny
    reason: "Reading sensitive environment file via stdin redirect"

  - id: stdin-redirect-ssh-key
    level: critical
    match:
      redirect:
        op: "<"
        target:
          any_of: ["~/.ssh/id_*", "~/.ssh/id_rsa", "~/.ssh/id_ed25519",
                    "~/.ssh/id_ecdsa", "id_rsa", "id_ed25519", "id_ecdsa"]
    decision: deny
    reason: "Reading SSH private key via stdin redirect"

  - id: stdin-redirect-aws-creds
    level: critical
    match:
      redirect:
        op: "<"
        target:
          any_of: ["~/.aws/credentials", "~/.aws/config"]
    decision: deny
    reason: "Reading AWS credentials via stdin redirect"

  - id: stdin-redirect-kube-config
    level: critical
    match:
      redirect:
        op: "<"
        target:
          any_of: ["~/.kube/config"]
    decision: deny
    reason: "Reading Kubernetes config via stdin redirect"