Why Prompt Control Plane

Your prompts deserve the same rigor as your code

Code gets linters, tests, and CI gates. Prompts get copy-paste and hope. Prompt Control Plane brings deterministic governance to the part of your AI stack that matters most.

What happens without prompt governance

Every ungoverned prompt is a silent liability.

📋

No audit trail

There is no record of what prompts were used, when they were authored, or what they scored. When compliance asks for evidence, there is nothing to review.

🚧

No policy gates

There is no mechanism to enforce quality standards before prompts reach production. Ambiguous instructions, missing constraints, and scope explosion ship unchecked.

🔓

Data transit risk

Without offline tooling, prompt content may transit through third-party services for analysis. Sensitive context leaves your network before you know whether the prompt is even well-structured.

🎲

Non-reproducible governance

If prompt analysis depends on an LLM, the same prompt can receive different assessments on different runs. You cannot prove that the same governance was applied consistently.

What it does

One engine. Three capabilities. All deterministic, all offline, all in under a second.

1

Scores and diagnoses

Every prompt receives a reproducible quality score (0–100) across five dimensions. Deterministic rules flag specific structural problems: scope explosion, missing constraints, hallucination risk, conflicting instructions, and more. The same prompt always produces the same score.

2

Compiles and structures

Raw intent is transformed into a structured prompt with role, goal, constraints, workflow, and output format. Three output targets: Claude XML, OpenAI system/user split, or generic Markdown. What was missing gets added; what was already there gets preserved.

3

Routes and estimates cost

Task complexity is classified, and the prompt is routed to the appropriate model tier. Token count and cost are estimated across multiple models from multiple providers, before a single API call is made. A full decision trail explains every routing choice.

Why this approach

Three architectural commitments that shape every decision in the engine.

🚫

Zero LLM calls inside

The engine itself never calls a model. All scoring, routing, compilation, and policy enforcement is a deterministic rule engine. No added inference cost. No variance between runs. No API keys consumed by the governance layer.

📡

Fully offline

Runs on your machine. No cloud services, no telemetry, no phone-home. Works behind corporate VPNs and air-gapped networks. After install, the engine has zero network dependency.

🔁

Deterministic and auditable

Same prompt produces the same score, the same compiled output, and the same routing decision, every time. Session exports include rule-set hashes, engine version, and risk scores for full reproducibility.

Governance controls

The controls that matter when AI governance is a requirement, not a suggestion.

🛡️

Policy enforcement

Run in advisory mode for visibility, or enforce mode to block. Prompts that fail quality gates or exceed risk thresholds are stopped before they reach any model. Both built-in and custom rules can be set to blocking severity.

📜

Tamper-evident audit trail

Every governance action generates a JSONL audit entry with SHA-256 hash chaining. If any entry is modified or deleted, all subsequent hashes break. Local-only, opt-in, and prompt content is never stored in the trail.

🔐

Config lock

Governance settings are locked with a passphrase. No one can change policy mode, strictness, or audit configuration without the correct secret. Every attempt, successful or blocked, is logged.

📏

Custom rules

Define up to 25 organization-specific rules with severity levels (blocking or non-blocking), risk dimensions, and pattern matching. Rules are hashed for reproducibility and included in session exports.

Start free. Scale when you need to.

Every plan includes the full scoring engine, all 19 tools, and all 3 output formats. What changes is volume and governance depth.

Free

Visibility

See what is wrong with your prompts. Score, check, classify, route, and estimate cost with no time limit. 10 full optimizations included.

When you need more than 10 optimizations or want always-on analysis.
Pro

Consistency

Enforce quality across daily workflows. 100 optimizations per month, offline license key (no account needed), and always-on mode for continuous governance.

When volume grows or you need unlimited analysis.
Power

Scale

Unlimited optimizations with no monthly cap. Higher rate limits and priority support for high-volume workflows.

When governance becomes a compliance requirement.
Enterprise

Compliance

Everything in Power, plus policy enforcement (advisory and enforce modes), tamper-evident audit trail with hash chaining, config lock with passphrase, custom rules engine, session lifecycle management with retention policies, and dedicated support.

Add the governance layer

Install in 10 seconds. Free tier included. No credit card, no account, no network dependency.

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