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Prompt Registry

Reviewed 19 July 2026Canonical definitionPart of: Agent Reliability & Deployment Terms →

A prompt registry is a versioned store of all system prompts, user prompt templates, and prompt chains used across an organisation's AI agents. It enables governance review, change tracking, rollback, and consistency across agent deployments. Sometimes written as a prompt register, it is the control point that makes prompt changes reviewable: every registered version can be evaluated against a golden dataset before it ships, and rolled back the moment quality regresses.

Looking for the applied side? Read Agent evals: a practical guide.

§01 / QUESTIONSterm: Prompt Registry
Questions

Common questions.

What is Prompt Registry?

A prompt registry is a versioned store of all system prompts, user prompt templates, and prompt chains used across an organisation's AI agents.

Why does Prompt Registry matter for AI agents?

It enables governance review, change tracking, rollback, and consistency across agent deployments. Sometimes written as a prompt register, it is the control point that makes prompt changes reviewable: every registered version can be evaluated against a golden dataset before it ships, and rolled back the moment quality regresses.

Which terms are related to Prompt Registry?

Closely related concepts include Prompt Version Control, AI Use-Case Registry, Agent CI/CD, Agent Discovery. Each is defined in the Prefactor glossary.

Where can I read more about Prompt Registry in practice?

The guide "Agent evals: a practical guide" covers the applied side in depth.

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Where this fits.

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