io.github.sipyourdrink-ltd/bernstein

What we checked

Six static checks, weighted by risk. Every result reflects only what could be observed in the published package and repository — never intent.

• Injection surface

  unscannable25% of grade

  Tool descriptions/manifest scanned for instruction-injection patterns (imperatives at the model, hidden text, 'ignore previous', data-exfil URLs).

  No tool descriptions, server instructions, prompts, or resources were fetched; nothing to scan for injection.

• Supply chain

  pass25% of grade

  Package provenance: namespace verification, repo linkage, maintainer count, account age, postinstall scripts, typosquat distance.

  repository linkage verified

• Credential hygiene

  warn15% of grade

  How the server takes secrets (env vs plaintext config vs hardcoded); secrets appearing in tool schemas.

  src/bernstein/adapters/claude.py: assigns a literal to SECRET (${BE…N} (len 47)) — non-provider secret literal; prefer environment intake. Reads secrets from the environment (e.g. examples/plugins/custom_router_plugin.py) — the recommended intake shape.

• Permission scope

  fail15% of grade

  Declared tools vs. breadth (filesystem, network, exec); flags shell-exec and unbounded filesystem access.

  HIGH: downloads and pipes straight to a shell (src/bernstein/adapters/cursor.py: pipes a download into a shell). references credential paths: src/bernstein/adapters/use_cases.py: references a credential path (/mcp.json) references credential paths: src/bernstein/cli/commands/remote_cmd.py: references a credential path (/.ssh/) has both shell/exec and destructive filesystem writes (benchmarks/bench_orchestrator.py: subprocess.* call; benchmarks/bench_orchestrator.py: destructive filesystem call (shutil.rmtree/os.remove/etc.)). discloses shell/exec capability: 92 files (benchmarks/bench_orchestrator.py, benchmarks/bench_startup.py, benchmarks/run_benchmark.py, +89 more) discloses dynamic code execution: benchmarks/swe_bench/run.py: uses eval()/exec() discloses dynamic code execution: src/bernstein/cli/commands/remote_cmd.py: uses eval()/exec() discloses dynamic code execution: src/bernstein/core/agents/container.py: uses eval()/exec() discloses broad/destructive filesystem access: 65 files (benchmarks/bench_orchestrator.py, benchmarks/bench_quality_gates.py, benchmarks/bench_startup.py, +62 more) Capability DISCLOSURE, not a verdict: static analysis sees the primitive is present and reachable, not whether its use is attacker-controlled.

• Version behavior

  fail10% of grade

  Diff of tool definitions between versions; new permissions or changed descriptions in a patch release (the postmark-mcp class).

  vs prior 3.17.1 (patch bump): new capability primitive(s) in source: child_process, dynamic-eval, fs-write, http-client, net, subprocess; new hardcoded outbound host/BCC destination(s): ..., 0.0.0.0, 127.0.0.1, adaptivecards.io, ampcode.com, api.anthropic.com, api.bernstein.run, api.cloudflare.com, api.github.com, api.linear.app, api.openai.com, api.together.xyz, app.factory.ai, auth.example.com, autohand.ai, benchmark, bernstein-server, bernstein.readthedocs.io, bernstein.run, cdnjs.cloudflare.com, central, claude.ai, cli.devin.ai, cli.github.com, cursor.com, discord.com, docs.anthropic.com, docs.astral.sh, docs.augmentcode.com, docs.aws.amazon.com, docs.cline.bot, dtrack.example.com, evil, example.com, files.pythonhosted.org, forgecode.dev, g4f.space, git-scm.com, github.com, glitchtip.example.com., google.github.io, hermes-agent.nousresearch.com, hooks.slack.com, hub.oxen.ai, img.shields.io, iterm2.com, junie.jetbrains.com, kilocode.ai, kiro.dev, linear.app, mistral.ai, my-agent-worker.account.workers.dev, mycompany.atlassian.net, ollama.com, openai.github.io, opencode.ai, openrouter.ai, org.atlassian.net, plandex.ai, pypi.org, raw.githubusercontent.com, registry.npmjs.org, s3.amazonaws.com, schema.org, shields.io, sipyourdrink-ltd.github.io, slack.com, sourcegraph.com, support.atlassian.com, sw.kovidgoyal.net, www.codebuff.com, www.continue.dev, www.kimi.com, www.npmjs.com, www.python.org, www.w3.org, your-host, your-org.atlassian.net, your-org.webhook.office.com, your-server.

• Transport config

  fail10% of grade

  Remote servers: TLS and auth mode (none/token/OAuth). Local servers: whether the manifest indicates it phones home.

  source performs runtime self-update / download-and-execute (bypasses version_behavior); sends telemetry to third-party SDK (amplitude) — disclosure, verify opt-in; manifest/source references tracking behavior — disclosure