# Hallucinated Fields

## Ontology Metadata

Code: ISS-0023
Version: ISS-0023@0.1.0
Ontology release: 0.1.0
Updated: 2026-05-10T00:00:00Z
Canonical URL: /workbench/issues/hallucinated-fields/

## Summary

The AI adds fields, keys, attributes, columns, or structured elements that were not declared, requested, or allowed by the expected schema.

## Category

- CAT-0010 — Output
  - URL: /workbench/categories/output/
  - Summary: Problems where generated content, citations, fields, formats, parser-facing output, or structured responses are missing, malformed, unsupported, or unusable.

## Primary Pattern

- PAT-0340 — Overreach
  - URL: /workbench/patterns/overreach/
  - Summary: A structural condition where actions, effects, authority, or modifications extend beyond declared scope without authorization.

## Declared Patterns

- PAT-0340 — Overreach
  - URL: /workbench/patterns/overreach/
  - Summary: A structural condition where actions, effects, authority, or modifications extend beyond declared scope without authorization.
- PAT-0160 — Schema Breakage
  - URL: /workbench/patterns/schema-breakage/
  - Summary: A structural condition where an instance, graph, payload, or object violates the type, shape, or rule requirements of a declared schema.
- PAT-0400 — Unbounded Scope
  - URL: /workbench/patterns/unbounded-scope/
  - Summary: A structural condition where an operation, authority, rule, or expansion has no declared upper bound, boundary, or termination condition.

## Derived Primary Lenses

- LEN-0120 — Boundary Compliance Lens
  - URL: /workbench/lenses/boundary-compliance-lens/
  - Summary: Evaluates observed structure against declared boundary posture, including allow, block, and exception rules.
- LEN-0160 — Constraint Sufficiency Lens
  - URL: /workbench/lenses/constraint-sufficiency-lens/
  - Summary: Evaluates whether declared constraints are sufficient to eliminate structural degrees of freedom.
- LEN-0200 — Interface Contract Lens
  - URL: /workbench/lenses/interface-contract-lens/
  - Summary: Compares declared interface structure to observed runtime structure to detect contract deviations.
- LEN-0210 — Invariant Lens
  - URL: /workbench/lenses/invariant-lens/
  - Summary: Verifies that declared invariants are structurally enforceable and not contradicted by observed structure.
- LEN-0220 — Isolation Boundary Lens
  - URL: /workbench/lenses/isolation-boundary-lens/
  - Summary: Evaluates whether structural constraints, effects, and regions remain contained within declared boundaries.
- LEN-0240 — Overreach Lens
  - URL: /workbench/lenses/overreach-lens/
  - Summary: Detects structure that exceeds declared scope or authority reach.

## Derived Secondary Lenses

- LEN-0150 — Conflict Lens
  - URL: /workbench/lenses/conflict-lens/
  - Summary: Detects mutually incompatible constraints, claims, states, or declarations that cannot be simultaneously satisfied.
- LEN-0190 — Escalation Gradient Lens
  - URL: /workbench/lenses/escalation-gradient-lens/
  - Summary: Measures structural growth or intensification across sequential executions, states, or transitions.
- LEN-0250 — Propagation Lens
  - URL: /workbench/lenses/propagation-lens/
  - Summary: Traces how structural declarations, effects, or state changes propagate across boundaries or stages.

## Search Intents

- hallucinated fields
- AI added extra JSON fields
- structured output has extra keys
- AI invented fields
- schema has unexpected fields
- output includes fields not requested