Agent Verification Gate — Schema-Validated Output Protocol for AI Agents

Give any AI agent a schema-validated, atomic-commit pipeline for everything it generates — diagrams, configs, docs, or structured output — so a hallucinated or out-of-scope change never silently overwrites something you depend on. A portable framework for Claude Code skills, Cursor rules, GPT custom actions, or any LangGraph or custom orchestrator.

The problem this solves

2026's agent-skill ecosystem got very good at generating things directly inside a chat session — diagrams, configs, docs, scaffolding. It did not get good at knowing when the thing it generated was wrong. An agent asked to update a deployment manifest or redraw an architecture diagram will happily produce a plausible-looking result even when it silently invents a field, drops a node, or breaks a reference the previous version depended on. Because the output looks finished, it gets accepted — and it overwrites the last known-good version. This kit is the seatbelt most agent pipelines are missing.

What this kit does

• Defines the IR Contract — every agent output is first emitted as typed, machine-checkable intermediate representation, never a direct file overwrite, so there is always something a validator can inspect before anything touches disk
• Specifies the Validation Gate Stack — four ordered checks (schema, structural, semantic grounding, diff-safety) every candidate must clear, each one blocking on first failure
• Defines the Atomic Commit Protocol — candidates render to staging first; the live artifact is replaced with a single atomic swap only after every gate passes, so a half-written file can never be exposed
• Includes the Repair Loop — a fixed format that turns a gate failure into machine-readable, re-promptable feedback instead of a stack trace
• Ships two worked examples (a regenerated deployment config, a regenerated architecture diagram) and a named list of anti-patterns

Built for

• Anyone building a Claude Code skill, Cursor rule, or GPT action that regenerates a file the user or another system depends on
• Teams whose agents produce diagrams, configs, API schemas, or structured docs that currently get accepted on sight
• Agencies productizing agent skills for clients who need a real answer to "what stops the agent from silently corrupting this file"

What's inside

• AGENT-VERIFICATION-GATE.md — the full methodology: the IR Contract, all four gates, the Atomic Commit Protocol, the Repair Loop, two worked examples, and the anti-pattern list
• ir-schema-template.json — a JSON Schema skeleton for your own IR contract, with the four required envelope fields pre-filled
• validation-gate-checklist.md — the four gates as a plain checklist
• atomic-commit-playbook.md — staging/atomic-swap patterns for filesystem, git-based, and API/database targets
• repair-loop-template.md — the fixed-shape failure object, with an example per gate
• quick-start.md — one-page mappings for Claude Code skills, Cursor rules, GPT custom actions, and LangGraph nodes

How you get it

Your full kit — every section, every template, copy-paste ready — is hosted at ukiyoprod.com/pages/agent-verification-gate. Bookmark it; nothing else to download.

Author

Built by Ukiyo Productions — an original methodology developed in response to 2026's wave of agent-driven artifact generators, including the schema-validated, verification-gated diagram tools that popularized this pattern for diagrams specifically. This kit generalizes that pattern to any agent-generated artifact. Not affiliated with, and not derived from the source code of, any specific open-source project. Part of a 100+ product marketplace built for founders, operators, and agencies working with AI agents.