Kevin Veen-BirkenbachandClaude Opus 5.5
8ba45efd04
The kvb-hub is a local review hub in a container bound to 127.0.0.1: one page, JSON APIs and an MCP endpoint for the operator's inbox, asks, decisions, staged-commit reviews, the radio stream, the agent graph, the worktree tree, push-to-talk and read-aloud radio (Piper, whisper.cpp) and an optional LLM command line. The hub is only a relay. The host executors in hub/client (the runner user service, the PermissionRequest hook and the approval CLI the commit skills call) verify a WebAuthn passkey signature against keys pinned outside every sandbox, refuse replays and fail closed. scripts/hub.sh with make hub-install, hub-check, hub-pin, hub-runner and hub-hook installs and checks the hub; hub-hook writes ~/.claude/settings.json after a backup. make watch-check shows a stuck watch hook. The new kvb-git-diff skill and the commit skills route reviews through the hub; the test_hub_* suites replace test_hub.py. Security review (kvb-think-criticize, three skeptics) fixed four holes: signed rules auto-approved chained shell commands; the client and LLM openers followed redirects, the LLM one with its bearer key; the worktree scan ran git fsmonitor and filter commands from agent-writable repos; compose set no memory, pids or health limits. Documented until core requirement 093, on the operator's word: the hub page is trusted while signing and pinning, local processes can forge the unsigned operator actions, and the container reads the host /tmp. Committed on the operator's word despite the gate: the passkey path is not yet verified live. Accepted MEDUSA false positives (137 findings on 115 lines, rows in security-accepted.jsonl): EXA002 x17, MEDUSA-MM-SCAN-058 x12, B603 x8, MEDUSA-FTSC-SCAN-089 x7, MEDUSA-PRIV-SCAN-762 x6, AIC-EXFIL-005 x5, EXA006 x5, MEDUSA-FTSCAN-231 x5, WEB-SSRF x5, MEDUSA-INF-SCAN-2057 x3, RH005 x3, TC001 x3, LO002 x2, MEDUSA-AEXP-SCAN-096 x2, MEDUSA-CGS-SCAN-028 x2, MEDUSA-INF-SCAN-1350 x2, MEDUSA-INF-SCAN-2369 x2, MEDUSA-INF-SCAN-2440 x2, MEDUSA-INF-SCAN-2638 x2, MLSC-SERIAL-002 x2, PL002 x2, PQC005 x2, SAST-PATH-001 x2, TC004 x2, TC005 x2, TC006 x2, TC007 x2, AA-146, EXA007, FINE-050, GB-ENCODE-001, GB-ENCODE-003, MEDUSA-CGS-SCAN-029, MEDUSA-CGS-SCAN-103, MEDUSA-DP-SCAN-1034, MEDUSA-DP-SCAN-1916, MEDUSA-DP-SCAN-954, MEDUSA-EXF26-TOOL-004, MEDUSA-FT-TRIGGER-005, MEDUSA-INF-SCAN-2206, MEDUSA-INF-SCAN-2457, MEDUSA-INF-WEB-003, MEDUSA-INFRA-SCAN-030, MEDUSA-MP-SCAN-1135, MEDUSA-RLHF-POISON-002, MEDUSA-RT-SCAN-006, MM-ENCODE-001, MP-124, PQC001, PQC002, PQC006, RP001, TC009, TC010, WEB-FLASK-004. 🎯 Fix: 80 % 💥 Break: 4 % 💸 Cost: 129 % ⏱️ Time: – 🛡️ Security: 100 % 💰 Value: ? 🏆 Score: 60 🚦 Gate: ⛔ fix 80 % < 90; cost 129 % > 100: ask the operator before the commit ``` /home/kevinveenbirkenbach/Repositories/github.com/kevinveenbirkenbach/skills/.worktrees/feature/kvb-hub ``` Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
from __future__ import annotations
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import datetime
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import hashlib
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import json
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import os
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import tempfile
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from pathlib import Path
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def stamp() -> str:
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return datetime.datetime.now(datetime.UTC).isoformat(timespec="seconds")
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def write_atomic(path: Path, data: bytes) -> None:
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with tempfile.NamedTemporaryFile(dir=path.parent, prefix=f".{path.name}-", delete=False) as handle:
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handle.write(data)
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handle.flush()
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os.fsync(handle.fileno())
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os.replace(handle.name, path)
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def read_json(path: Path) -> object:
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try:
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return json.loads(path.read_text(encoding="utf-8"))
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except (OSError, ValueError, RecursionError):
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return None
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def parse_line(line: str) -> dict | None:
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try:
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row = json.loads(line)
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except (ValueError, RecursionError):
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return None
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return row if isinstance(row, dict) else None
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def read_jsonl(path: Path) -> list[dict]:
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try:
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lines = path.read_text(encoding="utf-8").splitlines()
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except (OSError, ValueError):
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return []
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return [row for row in map(parse_line, lines) if row is not None]
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def epoch(value: object) -> float | None:
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if isinstance(value, bool) or not isinstance(value, int | float) or not 0 <= value < 1e11:
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return None
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return float(value)
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def iso_epoch(value: object) -> float | None:
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if not isinstance(value, str):
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return None
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try:
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parsed = datetime.datetime.fromisoformat(value)
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except ValueError:
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return None
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if parsed.tzinfo is None:
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parsed = parsed.replace(tzinfo=datetime.UTC)
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return parsed.timestamp()
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def shown(value: object) -> str:
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if value is None or value == "":
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return "-"
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return str(value)
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def digest(text: str) -> str:
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return hashlib.sha256(text.encode("utf-8")).hexdigest()
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