# Validate > Freshly judge exact subject content against - Skill: `thedixitjain/validate-3` (Agent Skill, multi-file: 8 files) - Install (CLI): `npx skillmds add thedixitjain/validate-3` - Raw SKILL.md: https://api.skillmd.com/api/skills/thedixitjain/validate-3/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: thedixitjain (https://skillmd.com/u/thedixitjain) - Updated: 2026-09-09 - Page: https://skillmd.com/skills/thedixitjain/validate-3 --- # Validate Independently judge one exact subject against the acceptance in its existing bead or caller source, write one durable verdict, and stop. Validate is the sole verdict writer. It never asks the model to reconstruct Plan or Candidate packets. ## Preconditions - The intent source is available as a caller-owned artifact or runtime-owned content-addressed snapshot; its acceptance digest is derived automatically. - The subject manifest still matches the subject. - Author and validator context IDs are explicit. - Freshness is explicitly attested with `source: runtime | caller` and an attester identity. Missing, colliding, or unattested identities produce `NOT_PROVEN`. This is a declared trust fact, not cryptographic proof that contexts were isolated. ## Cross-model fresh validator (caller-elected) A caller may request that the fresh validator run on a different model than the author. Dispatch via the controller-session recipe in the `agent-native` model-dispatch recipe (`codex-exec` and/or `ntm`, probed at runtime). Record author and validator `model_identity` in evidence refs and freshness attestation notes — do not change `verdict.v2` schema. If the requested validator model has no live adapter, disclose the unsatisfied diversity request and proceed same-model; never invoke `claude -p` / `claude --print`. Single fresh validator remains the default shape. ## Mutating-check quarantine Before running any acceptance-listed command, classify it as read-only or subject-mutating. Regen scripts, sync scripts, formatters, and anything with `--force` are subject-mutating until proven otherwise. Never run a subject-mutating check against an uncommitted subject: on 2026-07-15, `scripts/test-ci-deterministic-gates.sh` regenerated `skills-codex/` from HEAD mid-validation and destroyed the uncommitted subject, forcing `NOT_PROVEN` (verdict `b6e759dd...cb6a`); only restoring the subject and revalidating in a fresh context produced the PASS (`e9b6cdb8...37b9`). If a mutating check is genuinely required by acceptance, run it against a disposable copy or a committed subject, never the judged working tree. ## Workflow 1. Recompute and compare `subject-manifest.v1` using `python3 skills/validate/scripts/validate.py manifest`. The helper uses only filesystem content; Git commit/tree IDs are optional metadata. Derive the manifest at the start of validation and re-derive it at the end; any mismatch between the two is subject mutation and returns `NOT_PROVEN`. 2. Confirm the intent-source digest has not changed since implementation. If the subject changed or complete changed-path coverage cannot be derived, return `NOT_PROVEN`. 3. Adjudicate the actual diff, not a declared path list: compare runtime-derived actual changed paths against the intent's scope classes. A proven out-of-scope path returns `FAIL`; incomplete scope evidence returns `NOT_PROVEN`. 4. Inspect the exact subject and factual evidence. Reported exit codes are claims, not evidence: re-execute the claimed proofs that bear on acceptance (see the freshness rules below for when a digest-bound receipt suffices). Judge every acceptance criterion and record criterion-level results, findings, evidence references, `checked`, and `not_checked`. 5. Choose exactly one semantic result: `PASS`, `FAIL`, or `NOT_PROVEN`. PASS requires distinct identities, explicit freshness, nonempty checked scope, top-level evidence, and evidence for every criterion. 6. Persist canonical `verdict.v2` with `store-verdict --draft --intent-source --subject-manifest --author-context-id --validator-context-id --freshness-source --freshness-attester-id --scope-result `. The helper snapshots the exact resolved intent under `/.agents/ao/intents/sha256/.intent`, then computes and injects intent and subject digests plus author, validator, and freshness facts. Identity and changed-path facts come from runtime-derived inputs and receipts, not model transcription. Verdict storage defaults to `/.agents/ao/verdicts/sha256/.json`; callers may provide `verdict_dir`. 7. Return the artifact path and digest. Stop. The digest is SHA-256 over canonical JSON with `artifact_digest` omitted. Writes use a same-directory temporary file, flush, fsync, and atomic rename. Identical existing content is idempotent success; conflicting content is an integrity failure represented by `NOT_PROVEN`. ## Freshness without duplication Fresh validation means independent judgment over the exact subject. It does not require mechanically replaying every author command. Verify intent identity, scope, evidence digests, and every acceptance criterion; independently rerun the risk-critical, uncertain, or insufficiently evidenced checks. A digest-bound deterministic receipt may prove routine facts. Replay an expensive full suite only when acceptance requires that result or the supplied receipt cannot establish it. ## Boundary Validate emits no WARN, confidence, disposition, briefing learning, owner, next action, repair, retry, replan, helper, escalation, tracker, Git, release, closure, or delivery state. Generic provenance may record a verdict later, but ledger availability cannot change its validity. --- **Source:** [`hashgraph-online/awesome-codex-plugins`](https://github.com/hashgraph-online/awesome-codex-plugins) → `plugins/boshu2/agentops/skills-codex/validate/SKILL.md`