Orch Infra

orch-infra

Shared infrastructure skill: run preflight, integrity, and circuit-breaker checks at the start of every orchestrator cycle.

Usage contract

Every orchestrator loads this skill and calls all three scripts at the start of each cycle:

python3 .claude/skills/orch-infra/scripts/run_preflight.py
python3 .claude/skills/orch-infra/scripts/run_integrity.py
python3 .claude/skills/orch-infra/scripts/run_circuit_check.py

On any non-zero exit: stop and return {"status": "blocked"} to the meta-orchestrator.

Output envelope (all scripts)

Every script emits exactly one JSON object to stdout:

| Field | Type | Description | |-------|------|-------------| | status | "ok" \| "blocked" | Pass/fail verdict | | check | string | "preflight" \| "integrity" \| "circuit" | | timestamp | string | ISO 8601 UTC timestamp | | reason | string | Present only on "blocked" — machine-readable failure code | | detail | object | Present only on "blocked" — additional context |

scripts/run_preflight.py

Runs preflight.py --quick (local runtime checks only). Returns blocked if any check fails.

python3 .claude/skills/orch-infra/scripts/run_preflight.py

Exit codes: 0 = all checks passed, 1 = at least one check failed or exec error.

Example output (ok):

{"status": "ok", "check": "preflight", "timestamp": "...", "passed": 5, "total": 5, "failed_count": 0}

Example output (blocked):

{
  "status": "blocked",
  "check": "preflight",
  "timestamp": "...",
  "reason": "preflight_failed",
  "passed": 4,
  "total": 5,
  "failed_count": 1,
  "failed_checks": [{"check": "flock_works", "reason": "fcntl not available"}]
}

scripts/run_integrity.py

Verifies the hash chain of the orchestration log in strict mode. Returns ok if no log exists (first run).

python3 .claude/skills/orch-infra/scripts/run_integrity.py

Exit codes: 0 = chain intact (or no log), 1 = chain invalid or error.

Example output (ok):

{"status": "ok", "check": "integrity", "timestamp": "...", "events_verified": 42}

Example output (blocked):

{
  "status": "blocked",
  "check": "integrity",
  "timestamp": "...",
  "reason": "chain_invalid",
  "events_verified": 41,
  "first_error_seq": 42,
  "truncation_candidate": 42
}

scripts/runcircuitcheck.py

Evaluates circuit breaker state. Returns blocked if the circuit is tripped or should trip. Returns ok if no log exists (first run).

python3 .claude/skills/orch-infra/scripts/run_circuit_check.py

Exit codes: 0 = circuit open (healthy), 1 = circuit tripped or evaluation error.

Example output (ok):

{"status": "ok", "check": "circuit", "timestamp": "...", "tripped": false, "failure_count": 2, "threshold": 50}

Example output (blocked):

{
  "status": "blocked",
  "check": "circuit",
  "timestamp": "...",
  "reason": "circuit_tripped",
  "tripped": true,
  "failure_count": 52,
  "threshold": 50
}

What orch-infra does NOT do

• Does not know about phases or domains
• Does not read spec files or delivery artifacts
• Does not interact with humans
• Does not emit events to the log

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: zig999
• Source: zig999/siegard-code
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.