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@safebrowse/daemon

v0.1.5

Published

Localhost SafeBrowse daemon for browser-use agent enforcement

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

robkangrobkang

Keywords

agent-securitydaemonmiddlewareoauthsafebrowse

Readme

@safebrowse/daemon

Localhost SafeBrowse daemon with bundled runtime assets for policy, verified registry, and KB loading.

Install

npm install @safebrowse/daemon

Run

npx @safebrowse/daemon \
  --host 127.0.0.1 \
  --port 8787 \
  --deployment-profile secure_v6 \
  --approval-broker-public-key-path ./knowledge_base/signing/safebrowse_vf_ed25519_public.pem

When secure_v6 is selected, the daemon forces:

  • approval broker mode external_service
  • parser isolation mode node_permission_process

Model Guard

The daemon supports a model-guard sidecar protocol for compatible private runtimes. The SDK does not publish model weights or runtime bundles.

npx @safebrowse/daemon \
  --model-guard-url http://127.0.0.1:8788 \
  --model-guard-enforcement-mode shadow

Supported modes:

  • off: default; no scoring, even when a URL is configured
  • shadow: records compiledObservation.modelAssessment for deterministic ALLOW observations without changing verdicts or authorities
  • tighten: only applies stricter outcomes such as approval, read-only replan, or block

GET /health reports model-guard readiness, bundle/schema metadata, and digest metadata when the sidecar provides it. secure_v6 claim readiness does not require model availability.

Routes

  • GET /health
  • POST /v6/session/start
  • POST /v6/observe
  • POST /v6/action/evaluate
  • POST /v6/approval/issue
  • POST /v6/tool/prepare
  • POST /v6/tool/callback/verify
  • POST /v6/artifact/ingest
  • POST /v6/artifact/extract
  • POST /v6/memory/stage
  • POST /v6/memory/promote
  • POST /v6/memory/rollback
  • POST /v6/replay/bundle

Secure Surface Notes

The daemon now accepts both pre-extracted structured captures and direct raw binary inputs for:

  • MIME email via rawMimeBase64
  • DOCX, XLSX, and PPTX via contentBase64

Those raw inputs are materialized into secure typed captures before normal policy and authority evaluation.

Environment Variables

  • SAFEBROWSE_HOST
  • SAFEBROWSE_PORT
  • SAFEBROWSE_ROOT_DIR
  • SAFEBROWSE_DEPLOYMENT_PROFILE
  • SAFEBROWSE_APPROVAL_BROKER_PUBLIC_KEY_PATH
  • SAFEBROWSE_APPROVAL_BROKER_MODE
  • SAFEBROWSE_PARSER_ISOLATION_MODE
  • SAFEBROWSE_MODEL_GUARD_URL
  • SAFEBROWSE_MODEL_GUARD_TIMEOUT_MS
  • SAFEBROWSE_MODEL_GUARD_ENFORCEMENT_MODE (off, shadow, or tighten)

See the repository README for release and security guidance: