Validate

Graph Integrity Gate

This skill determines whether a node and its local causal subgraph can exist.

Validation does not evaluate quality or design semantics. It verifies structural conditions required for causal traversal.

[!IMPORTANT] A node is valid only if its presence does not create a logical contradiction in the graph. Cosmetic or stylistic issues must NOT cause failure.

Core Principle

Validation checks existence, not interpretation.

• If validation fails → the graph contains a structural contradiction
• If validation passes → reasoning may safely operate

Validation rejects impossible structures, not incomplete ones.

Validation guarantees the graph is a possible world, not a complete world.

0. Schema Topology Understanding

Before running validation, the agent MUST read docgraph.toml to establish the allowed structural topology.

docgraph.toml is the sole normative source. If unread, the agent MUST stop.

The agent MUST extract:

• Allowed node types and their identifiers
• Allowed relation types (r.type) and their directionality
• Allowed target types for each relation
• Required and forbidden relation rules

All validation decisions MUST be justified against this topology.

1. Automated Structural Checks

Run automatic checks before manual inspection.

docgraph check

If this fails → FAIL immediately

2. Schema Integrity

All nodes and relations must conform to docgraph.toml.

Failure cases:

• Undefined node type
• Undefined relation type
• Disallowed relation direction

Result: FAIL

3. Referential Integrity

All references must resolve.

• inbound references resolve
• outbound references resolve

Dangling references → FAIL

4. Identity Uniqueness

Node identifiers must be globally unique.

Duplicate ID → FAIL

5. Causal Contradictions

The local graph must not contain logical contradictions that prevent traversal.

A structure is invalid only if realization is impossible, not merely incomplete.

Examples:

• constraints block all realizations
• cyclic dependencies preventing resolution
• mutually exclusive requirements
• relation semantics conflict
• schema makes realization unreachable

Any detected → FAIL

Minimal Tooling

docgraph check

docgraph check

docgraph describe (optional)

Use only when confirming unresolved references around a specific node.

docgraph describe <ID>

What Validation Does NOT Check

The following MUST NOT cause failure:

• naming elegance
• directory placement
• template formatting
• SRP granularity
• documentation completeness

These belong to alignment or hygiene review.

Validation Report

Target

• Node: [ID]

Structural Results

Final Decision

PASS → Node may exist in the graph FAIL → Graph integrity would be broken

FINAL DECISION: [PASS/FAIL]

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