> ## Documentation Index > Fetch the complete documentation index at: https://docs.acmeagentsupply.com/llms.txt > Use this file to discover all available pages before exploring further. # The Reliability Stack > How ACME's tools fit together across the agent reliability lifecycle. # The Reliability Stack Agent reliability isn't a single problem — it's a lifecycle. ACME builds tools across that lifecycle: detecting risk before it becomes failure, protecting against failure at runtime, governing routing decisions, and supporting recovery when incidents occur. ## The Lifecycle ``` DETECT ──▶ PROTECT ──▶ GOVERN ──▶ TRIAGE ──▶ RECOVER ──▶ OPERATE ``` Each phase has specific tooling. Most teams don't need everything at once — the stack is designed to be adopted incrementally, starting with free detection tools. ## Phase by Phase ### Detect — Know your risk posture **[RadCheck](/products/radcheck/overview)** — Free, read-only scan Before you can protect against reliability failures, you need to know where the risk is. RadCheck performs a fast, non-destructive scan and produces a 0–100 reliability score across four domains: stall risk, silence gaps, compaction pressure, and operational hygiene. Run it before deploying. Run it after incidents. Run it periodically as part of reliability hygiene. *** ### Protect — Catch failures as they happen **[Sentinel](/products/sentinel/overview)** — Paid continuous monitoring RadCheck is a point-in-time scan. Sentinel watches continuously, catching the silent failures and stalls that don't crash but quietly stop your workflows. It runs as a lightweight observer alongside your agents — no interference, just detection. **[Watchdog](/products/watchdog/overview)** — Heartbeat and progress verification The more precise sibling to Sentinel. Watchdog distinguishes between an agent that's *alive* and an agent that's *progressing* — a distinction that matters when agents get stuck rather than crash. Pair with the heartbeat SDK for maximum fidelity. *** ### Govern — Keep routing disciplined **[SphinxGate](/products/sphinxgate/overview)** — Paid policy enforcement As routing complexity grows — multiple models, fallbacks, contexts — SphinxGate keeps it deterministic and auditable. Every routing decision is policy-driven, logged, and provable. Essential for teams with compliance requirements or multi-provider setups. *** ### Triage — Understand what went wrong **[OCTriage](/products/octriage/overview)** — Free incident assessment When something breaks, OCTriage is your first tool. It collects context, classifies the failure pattern, and gives you a concrete next step — along with an evidence bundle for post-incident review or support escalation. *** ### Recover — Verify you can get back up **[Lazarus](/products/lazarus/overview)** — Free recovery readiness Most teams discover their backups don't work during an actual incident. Lazarus validates recovery readiness proactively: backup coverage, restore assumption validation, and readiness scoring before failure forces the test. *** ### Operate — Long-horizon visibility **[DriftGuard](/products/driftguard/overview)** — Long-horizon drift detection The problems that don't announce themselves. DriftGuard tracks behavioral baselines and flags slow erosion — context growth, latency trends, output consistency — before they cross into active failure. **[Agent911](/products/agent911/overview)** — Paid unified control plane The operator surface that aggregates everything. Health signals, anomaly detections, routing state, recovery readiness — all in one snapshot. When something goes wrong, Agent911 is where you go. **[FindMyAgent](/products/agent911/findmyagent)** — Fleet presence visibility (included with Agent911) Live presence, heartbeat age, and "needs attention" flags for every agent in your fleet. Included with Agent911. *** ### Infrastructure **[Transmission](/products/transmission/overview)** — Event coherence layer The reliability infrastructure for reliability signals. Transmission ensures events flow correctly between components — ordered, deduplicated, and delivered even under degraded conditions. ## How Tools Connect ``` ┌─────────────────────────────────────────────────────┐ │ AGENT911 │ │ Unified Operator Surface │ └─────────────────┬───────────────┬───────────────────┘ │ │ ┌─────────▼──┐ ┌───────▼───────┐ │ TRANSMISSION│ │ LAZARUS │ │ (event bus)│ │ (readiness) │ └─────┬───────┘ └───────────────┘ │ ┌─────────┼──────────┬────────────┐ ▼ ▼ ▼ ▼ SENTINEL WATCHDOG SPHINXGATE DRIFTGUARD (runtime) (progress) (routing) (drift) │ ▼ RADCHECK OCTRIAGE LAZARUS (scan-time) (triage) (recovery) ``` ## Adoption Path Most teams start small and add coverage as their agent fleet grows: ### Solo operator / single agent 1. **RadCheck** — Get your first reliability score (free, takes 5 minutes) 2. **OCTriage** — Have it ready for when incidents happen (free) 3. **Sentinel** — Add when you want continuous protection ### Small team / multiple agents Add to the above: 4\. **Watchdog** — Progress verification beyond what Sentinel observes 5\. **Agent911** — Unified view when you're managing more than a couple of agents 6\. **Lazarus** — Validate recovery readiness proactively ### Multi-model / regulated environment Add to the above: 7\. **SphinxGate** — Deterministic routing with audit trail 8\. **DriftGuard** — Long-horizon behavioral baseline tracking ## Free vs. Paid | Product | Tier | | ---------------------- | --------------------------- | | RadCheck | **Free** | | OCTriage | **Free** | | Lazarus | **Free** | | Sentinel | Paid | | Agent911 + FindMyAgent | Paid | | SphinxGate | Paid | | Watchdog | Paid | | DriftGuard | Paid | | Transmission | Included with paid products | Free tools build trust. Paid tools solve the problem at scale. See [Pricing](/pricing) for current rates. ## Next Steps Get RadCheck running and see your first reliability score. Start with a free scan before deciding what else to add.