Compliance Control Walk

Compliance Control Walk

Walk a regulatory control across the running system and produce an evidence pack. The output is auditor-ready: per-control coverage matrix, per-site call-graph evidence, and a per-bypass finding for any reachable-but-uncontrolled path.

Required Loading

Always load:

• prompts/control-walk.md — the regulator-frame + control-name framework; the per-control evidence pack.

When To Run

• When an auditor asks for evidence on a specific control ("show me every site that audit-logs writes to Patient").
• When a SOC 2 / ISO 27001 / SOX / GDPR / HIPAA / PCI control needs an annual walkthrough.
• When a control was added to a wiki but never verified in the codebase.
• When a control was added to the codebase but the test does not cover a known bypass path.

Discovery Order

1. Identify the regulator frame (SOX, ISO 27001, SOC 2, GDPR, HIPAA, PCI). Each frame has a different set of canonical controls.
2. Identify the specific control name within the frame. Examples: SOX ITGC.04 (change management), ISO A.9.4.1 (information access restriction), GDPR Article 17 (right to erasure), HIPAA 164.312(a)(1) (access control), PCI 3.4 (PAN protection at rest).
3. For the control, identify the canonical enforcement symbol. Examples: an interceptor, a guard, a middleware, a deletion worker.
4. Find every enforcement site (codegraph_search for the symbol, or rg).
5. Find every bypass — every site that touches the same data but does not go through the canonical enforcement. A bypass is itself a COMP-BYPASS finding.
6. For each enforcement site, capture per-site evidence: a code excerpt + a path + a line number, suitable for the auditor to verify.
7. Cross-check the data-lineage report (if available) to see which sinks the control covers.

Output Contract

The evidence pack is grouped by control. For each control, name:

• the regulator frame + control ID
• the canonical enforcement symbol
• the per-site evidence (path + line + code excerpt)
• the per-bypass finding (every site that touches the data but does not go through the enforcement)
• the data-lineage cross-check (which sinks the control covers; which sinks are uncovered)
• the evidence-collector (the path the auditor can run to re-verify)

A control with no enforcement site is a COMP-MISSING finding. A control with enforcement sites but a reachable bypass is a COMP-BYPASS finding.

Tools

• codegraph_explore — one-shot control walk when the enforcement symbol is the entry point.
• codegraph_search — locate the control symbol by name.
• codegraph_callers / codegraph_callees — every enforcement site, every bypass.
• codegraph_files — path-to-control-owner map.
• Fallback — per-feature source inspection: every path that touches the protected data, manual review of the control coverage.

Fallback

If CodeGraph is unavailable, the fallback is per-feature source inspection. The final report must include the line:

CodeGraph unavailable; control walk gathered by rg/file inspection.

Related Skills

• spec-doc-linter — keeps DevAgent.md / CONTEXT.md honest; this skill is the runtime-control counterpart.
• data-lineage-trace — the upstream input: a control without a data-lineage report is missing the sink list.
• goal-driven-development — orchestrates the spec-to-code flow; this skill is the regulator-frame counterpart.

Examples

Each bad-* doc has a matching good-* in examples/ showing the minimum evidence pack. Read them side by side to calibrate pack depth. examples/control-output.md is the canonical "what the agent should emit" sample.