The COMPEL Glossary Graph visualizes relationships between framework terminology, showing how concepts interconnect across domains, stages, and pillars. Term nodes cluster by pillar affiliation while cross-references reveal semantic dependencies — for example, how risk appetite connects to control effectiveness, model governance, and assurance requirements. This network representation helps practitioners navigate the framework vocabulary and understand that COMPEL terminology forms a coherent conceptual system rather than isolated definitions.
COMPEL Glossary / guardrail
Guardrail
A control placed between the user or environment and an LLM that blocks, rewrites, or classifies content at one of four architectural layers: input filter, policy filter, output filter, or tool-call validator.
What this means in practice
Taught as a layered architecture rather than a single product.
Synonyms
LLM guardrails , AI safety layer
See also
- Content safety classifier — A model or rule system that detects policy-violating output categories — violence, self-harm, CSAM, targeted harassment, dangerous instructions, and similar.
- Excessive agency — A failure mode in which an LLM has been wired into tools and permissions whose blast radius exceeds what its supervision and validation logic can safely bound.
- Red-team (for LLMs) — A structured adversarial exercise against an LLM feature using human, automated, or hybrid techniques drawn from MITRE ATLAS or OWASP LLM Top 10 to discover failure modes before attackers do.