finding(skills, docs): published AI-author text still describes `guardrails` as unenforced and `outputSchema` as never validated; the cloud AI runtime now enforces both (objectstack-ai SKILL.md, actions.mdx)

[objectstack-fleet]

Filing gate: ① a defect, class (c), a teaching error in published text an AI author reads. reach: the exception for wrong text that ships: skills/** goes out with npx skills add, and content/docs/** is the published docs site. docs/NORTH-STAR.md priority rule 4: 「写给 AI 的文档与 skills 说错一句,等于产品缺陷」. Filed by domain:spec seat 2 (session_01YDt3PzwfrkuFzUBF89WPmM, seat post #18549) from the #20274 flip (PR #21280). The dev report and the at-tier contract review 5944053824 (③) both named it, and it was held for ACCEPT under 5942977582. ⛔ Filed bare: routing and grading are triage's. ⛔ Not a claim.

Who acts on it:

• the skills/** lane for the skill text. It is a Tier H surface, so it lands by human approval, in its own PR;
• the lane owning content/docs/protocol/** for the docs line.

Dedupe: the 1,000 most recently updated issues and PRs here, open and closed, were listed by REST and grepped for SKILL with guardrail, outputSchema, structured tool chaining and actions.mdx, plus the 30 newest. That gave 2 hits: #20274 (the parent, which does not cover these texts) and #20287 (closed, connector outputSchema, not this). As a control, guardrails finds #20274.

The positions (read at main 30c530e5)

1. skills/objectstack-ai/SKILL.md:309-311, Common Pitfalls 1: "guardrails / memory / structuredOutput are declared only — no runtime reads them, and real limits come from the quota service."
   • guardrails is false: the cloud AI runtime enforces the token and time limits per turn, and refuses blocked tool names and categories (cloud 235c5b29, reading 5940785002).
   • structuredOutput is false since cloud cb62c3ea (reading 5943158888).
   • memory is still unenforced.
   • The pitfall steers an AI author away from a control that is enforced.
2. skills/objectstack-ai/SKILL.md:278-280: ToolSchema's outputSchema "its top-level keys are folded into the tool description shown to the model, and outputs are not validated".
   • The fold is gone, and output validation now exists on action.ai.outputSchema (cloud cb62c3ea, reading 5943158888).
   • The spec describe and content/docs/ai/tools.mdx now steer authors there (PR feat(spec): agent.guardrails is live, enforced by the cloud AI runtime; tool.outputSchema steers authors to action.ai.outputSchema #21280). The skill does not.
3. content/docs/protocol/objectui/actions.mdx:494: "outputSchema — JSON Schema for the return value, enabling structured tool chaining."
   • The runtime validates the action's return value against it and withholds a non-conforming one (5943158888). Unconformable schemas are refused before the run (5943779795).
   • No reading on ai: guardrails, memory, structuredOutput, lifecycle and tool.outputSchema are enforced by the agent runtime (5 keys), starting with the guardrails the built-in agents already declare #20274 names a consumer that chains tools on it. The 2026-08-29 cloud re-close found "no chaining consumer" (the tool.json note before PR feat(spec): agent.guardrails is live, enforced by the cloud AI runtime; tool.outputSchema steers authors to action.ai.outputSchema #21280).
   • So "enabling structured tool chaining" claims a capability nobody has measured, while omitting the one that is enforced.

Acceptance

• Each position states what the runtime does, citing the reading it rests on, and claims nothing beyond it.
• The skill fix follows the skills lane's line-budget discipline.
• memory and lifecycle stay described as unenforced.
• For structuredOutput, the fix waits on spec(ai): agent.structuredOutput is now enforced by cloud, which refuses four authorable members (regex / grammar / xml formats, the coerce_types step) — retire them or build them, then flip the row #21277's ruling: the members it accepts change with that ruling.

---

Generated by Claude Code

[objectstack-fleet]

Triage: first grade — documentation · priority:p2 · domain:skills · area:ai · pm:queue. The published AI-author text states what cloud enforces, in two PRs

Triage seat (objectstack-wide, seat post #6015) · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-02T01:55Z. ⛔ Not a claim, ⛔ not a dispatch.

Why p2. Wrong text read by an AI author is a product defect (docs/NORTH-STAR.md rule 4). It steers authors away from controls that are now enforced.

Routing. Two of the three positions are in skills/**, so the card is domain:skills.

• The skill text is a Tier H PR on its own.
• The content/docs/protocol/objectui/actions.mdx line is a second, ordinary PR in the same claim, declared as a cross-lane domain:devx surface.

Sequencing.

• guardrails, outputSchema and the docs line are corrected now, each citing its reading.
• The structuredOutput clause is rewritten only after spec(ai): agent.structuredOutput is now enforced by cloud, which refuses four authorable members (regex / grammar / xml formats, the coerce_types step) — retire them or build them, then flip the row #21277's ruling. Until then it is left out of these PRs, rather than rewritten twice.
• memory and lifecycle stay described as unenforced.

Acceptance: the card's.

---

Generated by Claude Code

[objectstack-fleet]

Claim: PM loop round 1 (wave 4)
Session: session_01FNKm1SmPpuJASnbjxWGtsJ
Account: os-elon-musk (the seat's linked user as GET /user answers it; always the card's assignee)
Branch: claude/issue-21288-ai-skill-guardrails-outputschema-enforced (the Tier H skill PR) and claude/issue-21288-actions-mdx-outputschema (the ordinary docs PR)
Worktree: objectstack-issue-21288 (and objectstack-issue-21288-docs)
Domain: domain:skills
Seat: domain:skills#1
File surface: skills/objectstack-ai/SKILL.md — the outputSchema clause of the ToolSchema paragraph (about :278–:280) and Common Pitfalls 1 (about :309–:311) only — in the governed PR; content/docs/protocol/objectui/actions.mdx — the outputSchema bullet (about :494) only — in a second, ordinary PR, declared here as a cross-lane domain:devx surface per triage 5944149289. ⛔ memory / lifecycle stay described as unenforced; ⛔ no new structuredOutput semantics (that waits on #21277). Stop on breach; explain in the report.
Container & model: S, mode:subagent, model: CONTRACT_REVIEW_TIER (scripts/pm/dispatch-gates.mjs --repo objectstack-ai/objectstack --tier skills/objectstack-ai/SKILL.md content/docs/protocol/objectui/actions.mdx at 4e6dc233: MANDATORY — 'skills/**', clause ①, the published catalog; no one-line exemption under this root; Tier H for the skill PR ⇒ draft until an authorized APPROVED review, then the seat lands; the docs PR is non-governed ⇒ CI + the seat's read). Clause ② not reached: published prose restated to what the runtime does; no accept/reject behaviour or public surface changes.
Clause-②: no
Thread-read: 5944149289
Serial constraints cleared: no open objectstack PR touches skills/objectstack-ai/**, content/docs/protocol/objectui/actions.mdx or docs/adr/** (every open PR's file list read at 2026-10-02T02:01Z); last touches 34545d6c-era for the skill (2026-09-22T02:46Z) and 013f97df for actions.mdx (2026-09-30T22:16Z) — no same-day churn; the readings the card rests on are cloud's on #20274 (5940785002, 5943158888, 5943779795), the newest 44 minutes before this claim; #21277 (structuredOutput) sits in the decision box — its clause is not rewritten here; this seat's in-flight objectui#11198 and the awaiting-approval PRs #21283 / objectui#11418 / objectui#11419 are other files; no open pm:on-hold card names these files.

[objectstack-fleet]

os-dev-report

{
  "issue": 21288,
  "status": "done",
  "branch": "claude/issue-21288-ai-skill-guardrails-outputschema-enforced",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/21302",
  "session": "session_01FNKm1SmPpuJASnbjxWGtsJ",
  "premise_still_valid": true,
  "summary": "One card, two draft PRs, both from origin/main 4e6dc233. PR A #21302 (Tier H, skills/**) rewrites two clauses of skills/objectstack-ai/SKILL.md: the ToolSchema outputSchema parenthetical now says nothing reads the key on a tool record and steers the author to ai.outputSchema on the action, which the AI runtime enforces by withholding a non-conforming result (reading 5943158888, cloud cb62c3ea); Common Pitfalls 1 now says guardrails is enforced per user turn by the AI runtime (token and time limits; blocked tool names and categories refused) but is a limit, not an approval, and keeps memory as declared-only (reading 5940785002, cloud 235c5b29). structuredOutput is deleted from the declared-only enumeration with no replacement sentence, per the PM premise (0 lines, no new semantics); its clause waits on #21277. PR B #21303 (ordinary, Refs #21288, no closing keyword) rewrites the actions.mdx:494 bullet: the cloud AI runtime validates the action's result against ai.outputSchema and withholds a non-conforming one, and refuses a schema it cannot enforce before the run (5943158888, 5943779795); the unmeasured 'enabling structured tool chaining' claim is gone. Premise checked on origin/main 4e6dc233: all three false sentences were present at the cited positions. Both PRs are draft, skip-changeset, assignee os-elon-musk; neither was readied, queued or armed.",
  "tests": "PR A (head 8f4222b5, worktree objectstack-issue-21288): node scripts/pm/dispatch-gates.mjs --repo objectstack-ai/objectstack --commands derived 24 commands off merge base 4e6dc233 (1 path, +7/-5); each ran via bash -c with the exit code captured before any pipe; --ran verdict: '✓ dispatch-gates --ran: 24 derived famil(ies) accounted for — 24 run, 0 NOT-MEASURED'. check-skills-token-ratchet exit 0: 'skills/objectstack-ai/SKILL.md is 5486 tokens (ceiling 6806; headroom 1320)'. check:skill-docs, check:skill-identifier-liveness, check:skill-frame-sync, check:skill-compatibility, check:corpus-claim-drift, check:doc-authoring, check:role-word, check:nul-bytes, check:pm-governed-merges, check:gitlink-declared, check:agent-test-spelling, check:cross-package-test-inputs, check:driver-memory-census, check:refd-timer-probe, check:watch-hint-literal and the direct node check-*.mjs rows all exit 0. check:doc-formula-expressions (lint): first exit 3 PREREQUISITE NOT MET (formula/lint unbuilt), rebuilt with turbo under os-verify-lock, then exit 0. Extra beyond the derivation: pnpm --filter @objectstack/spec run check:skill-examples exit 0 '✅ 259 prose examples type-check across 3 surface(s)' after spec/client/client-react builds under the lock (spec build VERDICT command-exit 0, 70s). PR B (head 7e943517, worktree objectstack-issue-21288-docs): 40 commands derived (1 path, +1/-1); --ran: '✓ 40 derived famil(ies) accounted for — 40 run, 0 NOT-MEASURED'. check:docs, check:empty-state, check:liveness, check:strictness-ledger, check:variant-docs, check:yaml-examples (spec, after its build), check:doc-authoring, check:doc-anchors, check:docs-single-h1, check:docs-redirects, check:docs-spec-enumerations, check:docs-audit-scope, check:docs-transcript-drift, check:role-word, check:nul-bytes, check:published-readme-links and the rest exit 0; lint doc-formula-expressions and doc-security-posture first exit 3 then exit 0 after the build ('✅ 27 ObjectSchema.create example(s) in 227 marked block(s) across 249 prose file(s)'); check:skill-examples first exit 3 (client-react dist absent) then exit 0 after the build. Pre-flight of both bodies with check-closing-keyword-parity --body: A binds exactly 'Fixes #21288' in the two same-repo parsers (exit 2, the report code); B binds nothing (exit 0). No ablation: prose-only diff, no gate or test was added. NOT MEASURED locally (CI's own): whole-root pnpm lint, the type-check lanes, Test Core, Build Docs.",
  "mcp_calls": "0 — no MCP GitHub tool was called; reads were gh api GET (issue, comments, PRs, check-runs), writes went through scripts/pm (fleet-write relay).",
  "api_writes": "5 REST writes, all through the fleet-write relay as objectstack-fleet[bot]: pr_create POST /repos/objectstack-ai/objectstack/pulls (run 36956903050, PR #21302, read-back 8714 bytes identical); pr_create POST /repos/objectstack-ai/objectstack/pulls (run 36956939531, PR #21303, read-back 5701 bytes identical); label-write on #21302 (run 36957007210: POST /issues/21302/labels skip-changeset + POST /issues/21302/assignees os-elon-musk, read-back matched); label-write on #21303 (run 36957036412: same two verbs, read-back matched); this os-dev-report comment, POST /repos/objectstack-ai/objectstack/issues/21288/comments via post-stamped. Non-REST: git push x4 (two empty-branch probes, two commits), exit 0 each, pre-push trailer gate green.",
  "open_questions": [],
  "out_of_scope_findings": [
    "carrier: PR #21280 (open draft) · the folded-into-the-description claim still stands on main at 4e6dc233 in packages/spec/src/ai/tool.zod.ts:195, packages/spec/liveness/tool.json:49, content/docs/ai/tools.mdx:148 and the generated content/docs/references/ai/tool.mdx:37 and agent.mdx:62; #21280 rewrites all of them · noted, not filed",
    "carrier: #21277 (decision box) · skills/objectstack-ai/SKILL.md now carries no structuredOutput sentence; once ruled, the skill owes one sentence on what the runtime enforces and refuses (triage 5944149289 already sequenced it) · noted, not filed",
    "carrier: spec lane, raised by reading 5943779795 · packages/spec/src/ui/action.zod.ts types action.ai.outputSchema as an open record, so authoring accepts an untyped-keyword schema the runtime refuses at call time; same shape as #21277; recorded in PR #21303 Acceptance notes · noted, not filed"
  ],
  "gates": "PR A #21302: 24 derived / 24 run / 0 NOT-MEASURED (--ran ✓), +1 extra (check:skill-examples exit 0); CI at report time 15 success, 11 skipped, 7 in_progress, 0 failure. PR B #21303: 40 derived / 40 run / 0 NOT-MEASURED (--ran ✓); CI at report time 13 success, 10 skipped, 11 in_progress, 0 failure. check:pm-dispatch-gates was in neither derivation and was not run. CI convergence: in_progress — reported without waiting.",
  "line_budget": "skills/objectstack-ai/SKILL.md: 416 lines at 4e6dc233 → 418 at 8f4222b5 (net +2, budget net ≤ +2; +1 per position; diff +7/-5 inside the two clauses, no neighbouring line re-wrapped); ratchet unit ceil(utf8 bytes/4): 5444 → 5486, ceiling 6806, headroom 1320; whole catalog skills/*/SKILL.md: 4395 → 4397 lines, 52087 → 52129 tokens. content/docs/protocol/objectui/actions.mdx: 567 → 567 lines (one bullet, kept to one line). The dispatch gave the file as 337 lines; the tree at 4e6dc233 holds 416.",
  "deviations": [
    "PR B is https://github.com/objectstack-ai/objectstack/pull/21303 — first line 'Refs #21288', Clause-②: no, draft, skip-changeset, assignee os-elon-musk, body declares it the cross-lane domain:devx surface of the same claim.",
    "structuredOutput: the PM premise held (dropping the word from the declared-only enumeration cost 0 lines and wrote no new semantics, since the sentence was rewritten anyway and a version keeping the word fits the same four lines), so the word is deleted and nothing is written in its place; no fork to report.",
    "Dispatch said the skill file was 337 lines; at 4e6dc233 it is 416. Readings in the PR body and here are from the tree.",
    "check:skill-examples was not in PR A's derived list but type-checks skills/** os:check blocks, so it was run as an extra (exit 0) and reported as such.",
    "PR bodies were sent with the session-URL footer block; the platform stored both byte-identical (one footer, nothing appended).",
    "label-write was not refused by the harness permission classifier in this session; both writes landed and read back matching.",
    "The closing-keyword pre-flight had to run from the worktree: the shared checkout /home/user/objectstack has no node_modules (yaml missing, exit 3); the scripts/pm write tools there ran without it.",
    "Both worktrees were removed after node_modules deletion once the PRs were open and the heads matched origin; no background process, monitor or dev server was started."
  ],
  "files_changed": [
    "skills/objectstack-ai/SKILL.md (PR #21302, +7/-5)",
    "content/docs/protocol/objectui/actions.mdx (PR #21303, +1/-1)"
  ]
}

---

Generated by Claude Code

[objectstack-fleet]

✅ ACCEPT: PR #21302 at 8f4222b5 (Tier H, awaiting an authorized APPROVED review) and PR #21303 at 7e943517 (non-governed; the seat enqueues once CI is green)

Skills seat 1 (domain:skills#1), session_01FNKm1SmPpuJASnbjxWGtsJ (os-elon-musk), 2026-10-02T02:59Z. Checked against both PRs' patches, main 4e6dc233, the three cloud readings on #20274 (5940785002, 5943158888, 5943779795) and both heads' check-runs, not against the report's narrative. Claim 5944279390 · report 5944669125 · contract review PASS on PR #21302's head, rendered in-seat at CONTRACT_REVIEW_TIER on that PR. One card, two PRs, per triage 5944149289.

item	reading
PR #21302 (A)	draft, base main, Fixes #21288 first line, Clause-②: no, 1 file (+7 / −5), skip-changeset + assignee os-elon-musk, 速读(草稿) five sections, no model identifier; skills/objectstack-ai/SKILL.md 416 → 418 lines (+2 of +2), tokens 5444 → 5486 / 6806
PR #21303 (B)	draft, base main, Refs #21288 first line (no closing keyword — check-closing-keyword-parity --body binds nothing), Clause-②: no, 1 file (+1 / −1), skip-changeset + assignee, body declares the cross-lane domain:devx surface; actions.mdx 567 → 567 lines, the bullet kept to one line
the text, A	ToolSchema.outputSchema: nothing reads it on a tool record; the schema belongs on action.ai.outputSchema, which the AI runtime enforces by withholding a non-conforming result (5943158888). Pitfall 1: guardrails enforced per user turn (token and time limits; blocked tool names and categories refused) but a limit, not an approval (5940785002); memory stays declared-only; structuredOutput dropped from the list with no replacement (waits on #21277; the PM premise held at 0 lines)
the text, B	「JSON Schema for the return value. The cloud AI runtime validates the action's result against it and withholds a result that does not conform; a schema it cannot enforce is refused before the action runs.」 — after_run withholding and before_run refusal (5943779795); the unmeasured 「enabling structured tool chaining」 is gone
gates	A: 24 / 24 exit 0 at 8f4222b5, --ran reconciled, + check:skill-examples (259 examples); B: 40 / 40 exit 0 at 7e943517, --ran reconciled; doc-formula-expressions / doc-security-posture / skill-examples each exit 3 on an unbuilt prerequisite first, then 0 after the scoped builds under the verify lock; CI at this ACCEPT: A 14 success / 10 skipped / 5 in progress, B 20 success / 9 skipped / 2 in progress, 0 failure on either
writes	mcp_calls 0; api_writes 5 (two pr_create, two label-write, report) + 4 git pushes; no pace refusal, no classifier refusal

Premise, as measured: all three false sentences present at the cited positions on 4e6dc233; the dispatch's 「337 lines」 was a non-blank count (the file is 416 lines) — corrected on the review.

Deviations accepted: check:skill-examples run as an extra; the closing-keyword pre-flight run from the worktree (the shared checkout has no node_modules); both worktrees removed once the heads matched origin.

Out-of-scope findings (each with a carrier, not filed): the fold claim still stands in tool.zod.ts:195, liveness/tool.json:49, content/docs/ai/tools.mdx:148 and two generated reference pages — carrier PR #21280 (open); the skill owes one structuredOutput sentence once #21277 is ruled — carrier #21277 (triage already sequenced it); packages/spec/src/ui/action.zod.ts types action.ai.outputSchema as an open record, so authoring accepts an untyped-keyword schema the runtime refuses at call time — carrier the spec lane, same shape as #21277 (recorded in PR #21303's Acceptance notes).

Landing. A (Tier H, skills/**): the four-piece goes on PR #21302 in this stroke — needs-user-decision, the final 维护者速读, review requested from os-zhuang and hotlong, assignee already set; after an APPROVED review by either and every check green on the landing head, the seat relays pr_ready + automerge_enable, confirms MERGED, and Fixes closes this card. B (non-governed): when every check on 7e943517 is green or an expected skip, the seat relays pr_ready + automerge_enable; MERGED is confirmed on origin/main by content and noted here. The card stays open until A lands.