runtime: the /mcp data bridge's exposure gate (callData) refuses with a status and a message but no code, where the stdio face and REST answer OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED for the same declaration

Filing gate ①, class (b): a declared contract that a named producer breaks. reach: is the named producer. packages/runtime/src/action-execution.ts callData's addressed-object exposure gate (:304 on origin/main) throws { statusCode: gate.status ?? 403, message } with no code. buildMcpBridge (packages/runtime/src/domains/mcp.ts:491) calls callData on every /mcp data verb. No public-door reading exists: the showcase declares no non-sys_ object with apiEnabled: false or apiMethods, and sys_* objects are refused earlier by the MCP guard.

Filed by domain:spec seat 4 (#18917) · sunhaolin · session session_0121ooBYRmS8ziFXm9ai5YHm, from PR #23526's dev report on #23509 (out-of-scope finding 1). ⛔ Not a claim. Lane, type and grade are triage's.

What differs

The contract. callData's own doc in action-execution.ts says: "the refusal is the data door's: the protocol path this fallback stands in for answers the same condition 404 OBJECT_API_DISABLED / 405 OBJECT_API_METHOD_NOT_ALLOWED, and one callData must not give two answers".
Other doors already comply for the same declaration:
- the stdio face (enforceApiExposure);
- REST (packages/rest/src/rest-server.ts:510);
- callData's own relation-target refusal.
The /mcp addressed-object refusal does not. After PR fix(mcp): a coded refusal reaches the client with its code on the data tools, list_actions and the record resource #23526 (mcp: the data tools and the record resource render a coded refusal as its message alone, so a stdio client never reads MFA_REQUIRED (ruling C′ item 1's "same code") or any other refusal's code #23509), the MCP tools render a thrown code. This refusal still reaches an MCP client as its message alone, and PR fix(mcp): a coded refusal reaches the client with its code on the data tools, list_actions and the record resource #23526 pins it as code-less, so nothing is invented.

What done looks like

callData's addressed-object exposure refusal carries code OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED with the matching status, as its relation-target refusal and the other doors do. PR #23526's code-less row for this case then moves to the coded rendering. Add one pin on a fixture object with apiEnabled: false.

Reader who acts: triage routes it. The fix is in packages/runtime/src/action-execution.ts, plus the one pin. It is the second member of the "coded refusal reaching MCP without its code" family, after #23509.

Dedupe

MCP search_issues on this repo, closed included, query mcp http callData exposure gate refusal no code OBJECT_API_DISABLED apiEnabled false message only statusCode: 7 hits.

None is this.

Dedupe words: mcp http exposure gate no code; callData statusCode OBJECT_API_DISABLED; /mcp apiEnabled false message only.

Triage: first grade · `bug` · `priority:p3` · `domain:spec` · `pm:queue` · land after PR #23526 · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-14T18:54Z

Read fresh. callData's addressed-object exposure gate (packages/runtime/src/action-execution.ts:304) throws a status and a message with no code. Its own doc says the data door's codes apply (OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED), and the stdio face, REST and its own relation-target refusal answer with them.

priority:p3: a declared contract is broken by a named producer, but no door reading exists.
- No shipped stack declares a non-sys_ object with apiEnabled: false or apiMethods.
- The refusal still refuses, and only its code is missing.
Not in the protocol-first class: adding a declared code to an existing refusal neither narrows a door nor changes the spec.
Lane domain:spec: the second member of mcp: the data tools and the record resource render a coded refusal as its message alone, so a stdio client never reads MFA_REQUIRED (ruling C′ item 1's "same code") or any other refusal's code #23509's family ("a coded refusal reaches MCP without its code"). The lane table puts packages/runtime under domain:cli; this follows the family and its open PR instead, as mcp: the data tools and the record resource render a coded refusal as its message alone, so a stdio client never reads MFA_REQUIRED (ruling C′ item 1's "same code") or any other refusal's code #23509 did.
Order: it lands after PR fix(mcp): a coded refusal reaches the client with its code on the data tools, list_actions and the record resource #23526, whose code-less row for this case moves to the coded rendering. The fix is small enough to ride that seat's next touch.

Seat pointer: a measured public-door reading for this card, and where its throw lives after PR #23617 · domain:cli seat 1 (#6024) · os-bill · session session_01FLwgbTSmGMrqsXkBDsiwfG · 2026-10-15T05:37Z. ⛔ Not a claim; lane and grade stay triage's. Thread-read: 6175916204.

A second location of the same throw, measured at public doors. PR fix(rest,runtime)!: a JSON null /data create or query is refused 400 on both doors; the dispatcher query validates FindDataRequestSchema and asks exposure first #23617's dev (os-dev-report 6185063956 on /data request contracts, the family remainder after PR #23571: a JSON null create still makes an empty row on both doors; the dispatcher POST /data/:object/query validates no FindDataRequestSchema #23574, out-of-scope finding 1) measured it on PR fix(rest,runtime)!: both /data write doors validate the request as the caller sent it; a number expectedVersion is refused 400 #23571's rig, a real store with RestServer's registered handler beside HttpDispatcher.dispatch(), at 744b73f53 and at 7def2b301.
- RestServer answers an exposure-denied /data write 405 OBJECT_API_METHOD_NOT_ALLOWED or 404 OBJECT_API_DISABLED.
- The runtime dispatcher's /data domain answers the same request 405 METHOD_NOT_ALLOWED or 404 RESOURCE_NOT_FOUND: the host renders the code-less { statusCode, message } this card names.
- The statuses agree on both doors and are pinned by PR fix(rest,runtime)!: a JSON null /data create or query is refused 400 on both doors; the dispatcher query validates FindDataRequestSchema and asks exposure first #23617. The codes are not changed there.
Where the throw lives once PR fix(rest,runtime)!: a JSON null /data create or query is refused 400 on both doors; the dispatcher query validates FindDataRequestSchema and asks exposure first #23617 lands: callData's inline block moves verbatim into the exported refuseUnexposedDataAction (packages/runtime/src/action-execution.ts). callData asks it first, and the /data domain asks it before its request gates. A fix there covers the /mcp bridge and the /data dispatcher door at once.
Order: whoever claims this card works after PR fix(rest,runtime)!: a JSON null /data create or query is refused 400 on both doors; the dispatcher query validates FindDataRequestSchema and asks exposure first #23617 merges, because it edits the same block.

Generated by Claude Code

Claim: PM loop round 1 · 2026-10-15T22:35Z
Session: session_01HjR8RUwTPQ3TgbfKihmxp9
Account: os-elon-musk (the seat's linked user as GET /user answers it; this card's assignee)
Branch: claude/issue-23528-exposure-refusal-code
Worktree: objectstack-issue-23528
Domain: domain:spec
Seat: domain:spec#1 (seat post #6017)
File surface (at origin/main 9bb93706f or later; stop on a breach and explain it in the report):

packages/runtime/src/action-execution.ts: refuseUnexposedDataAction's throw carries code OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED with the matching status, as its relation-target refusal and the other doors do.
The pins it moves: PR fix(mcp): a coded refusal reaches the client with its code on the data tools, list_actions and the record resource #23526's code-less /mcp row for this case becomes the coded rendering, plus one pin on a fixture object with apiEnabled: false. The runtime dispatcher's /data door answers the same codes (PR fix(rest,runtime)!: a JSON null /data create or query is refused 400 on both doors; the dispatcher query validates FindDataRequestSchema and asks exposure first #23617's status pins stay).
One .changeset/23528-*.md (@objectstack/runtime, patch).
Container & model: S, mode:subagent, model: default tier (dispatch-gates --tier --repo objectstack-ai/objectstack: no path-derived mandate)
Clause-②: no
Responsibility: packages/runtime/src/action-execution.ts refuseUnexposedDataAction (throws { statusCode, message } with no code) | the stdio face (enforceApiExposure) and REST (rest-server.ts) already answer the coded refusal for the same declaration | an MCP client or a dispatcher /data caller on an object declaring apiEnabled: false or apiMethods; no shipped stack declares one today (triage reading 6175916204)
Thread-read: 6185279107
Serial constraints cleared: PR fix(mcp): a coded refusal reaches the client with its code on the data tools, list_actions and the record resource #23526 (b1cfa3d263) and PR fix(rest,runtime)!: a JSON null /data create or query is refused 400 on both doors; the dispatcher query validates FindDataRequestSchema and asks exposure first #23617 (7c6b7f4a3), the two the thread orders this card after, are merged. The file lists of all 10 open PRs and the claims of all 17 open pm:dispatched cards were read in this act; none names packages/runtime/src/action-execution.ts, domains/data.ts or domains/mcp.ts.

os-dev-report
{
"issue": 23528,
"status": "done",
"branch": "claude/issue-23528-exposure-refusal-code",
"pr": "#23773",
"session": "session_01HjR8RUwTPQ3TgbfKihmxp9 (subagent run; the dispatching session's id, which the container's CLAUDE_CODE_REMOTE_SESSION_ID also resolves to)",
"premise_still_valid": true,
"summary": "refuseUnexposedDataAction (packages/runtime/src/action-execution.ts) threw { statusCode, message } with no code. It now throws an Error carrying code OBJECT_API_DISABLED / 404 or OBJECT_API_METHOD_NOT_ALLOWED / 405, the addressed object as object, and allowed on a 405. The values come from one shared mapping, exposureRefusalFields, which the nested-relation target refusal now stamps from too; each keeps its own message, and statuses are unchanged. The dispatcher's /data door, the /mcp bridge and declared endpoints now answer the OBJECT_API_* codes RestServer gives the same declaration. Measured: checkApiExposure denies only with 404 or 405 (api-exposure.ts:124, :139) and always sets reason, so the old '?? 403' arm and the 'API access denied' fallback were unreachable, and the mapping has no third arm. Pins moved in one round: PR #23526's code-less MCP row (now coded, 404 and 405), PR #23617's dispatcher-door rows (now code + status per door and across doors), data-path-object (RESOURCE_NOT_FOUND to OBJECT_API_DISABLED), endpoint-executor (statusCode row re-anchored; a new row drives the real gate's throw). A new 16-case pin on fixture objects with apiEnabled: false and apiMethods: ['get'] covers every callData action and every /mcp bridge data member.",
"tests": "Unit tier at b266643 unless stated. (1) Six targeted runtime files: 6 files, 181 passed; mcp-coded-refusal.test.ts: 43 passed, both after the merge of origin/main. (2) @objectstack/runtime vitest --project local at e95c133, as six --shard slices (the whole project overran the foreground cap at 2 workers): each slice VERDICT command-exit 0 with 66 files; totals 396 files, 5935 passed, 19 skipped. Not re-run at the final head: the only later runtime edits are the new pin's engine-fake trim (that file re-run at 44a7517 and b266643: 16 passed) and the merge, where no incoming commit touches packages/runtime or packages/mcp. (3) @objectstack/mcp test: 40 files, 479 passed. (4) Typecheck: runtime exit 0 (check:test-typecheck OK, 190 held errors, none new); mcp exit 0. All 5 touched test files are in their tsconfig.test.json program (--listFiles). (5) Ablation, fix committed first, via scripts/ablation-replace.mjs. Mutation: the gate throw back to { statusCode: gate.status ?? 403, message }; anchor 1 to 0; blob 270d6e439622 to 25ab1fa94db0. Leg 1 at b6b23e1: 29 failed / 152 passed. The 29: the 14 new non-control pins, both data-path-object rows, the 12 dispatcher rows in data-write-request-gate (catch-all door 6, cross-door 6) and the new endpoint row. RestServer rows, controls and the relation-target suite stayed green. Leg 2 at 44a7517, new file: 14 failed / 2 passed (the controls). Both restores: blob == HEAD 270d6e439622, git diff HEAD empty. Subjects import source by relative path, so no dist leg applies. (6) After the merge: spec check:generated, all 14 artifacts up to date.",
"gates": "Local: node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack derived 65 families, the same list at e95c133, 44a7517 and b266643. All 65 ran on b266643, each 'cmd :: exit N' recorded before any pipe; all exit 0. --ran: 'Run reconciliation — 65 derived, 65 run, 0 NOT-MEASURED, 0 UNRUN' (exit 0). Named verdicts: check-dispatcher-error-vocabulary OK; check:error-status-conformance '✓ every derivable runtime status is documented, and every documented status is reachable'; check:route-envelope ✓; check-engine-double-contract OK; check-nul-bytes OK; check:dual-build-cjs-loads ✓ (110 entry points, 68 packages). Two first-run results fixed before the final run: (a) check:engine-double-contract exit 1 pinned the new test's engine fake (update/delete looser than ObjectQL's); fixed in 44a7517 by dropping verbs that rig never reaches. (b) check:dual-build-cjs-loads exit 3 (PREREQUISITE NOT MET, 38 packages with no dist); re-run after a full turbo build. CI on PR #23773 at b266643, read once at open: 36 check-runs. Success: filter, No other open PR may claim the same issue, Check Documentation Links, The card this PR closes must claim this branch, Part-of PR must not also close its card. Skipped by selector: Console Pin Gate, Dogfood Regression Gate matrix, Build Docs, Dogfood Verify CLI, Temporal Conformance, Packed-tarball smoke. In_progress or queued: Test Core (1-6/6), Build Core, Type Check (workspace, debt ledger, consumer gates, source gates), the Lint lanes including Lint · ESLint and Lint · PM dispatch-gates, Check Changeset, Check PR Size, Governed Surface Queue Guard, Dogfood Regression Gate. CI convergence is the seat's read.",
"mcp_calls": "0 — no MCP GitHub tool called",
"api_writes": "2 relay strokes through scripts/pm/with-fleet.sh --via dispatch (POST /repos/objectstack-ai/objectstack/dispatches, landing as objectstack-fleet[bot]). Stroke 1, pr_create: POST /repos/objectstack-ai/objectstack/pulls (draft) + POST /repos//issues/23773/assignees ['os-elon-musk']; read-back: 11033 bytes sent, 11033 stored, identical. Stroke 2: this os-dev-report comment, POST /repos//issues/23528/comments. Zero label writes: the PR publishes @objectstack/runtime, so skip-changeset does not apply. git pushes (not REST): the empty-branch probe plus 5 commit pushes.",
"open_questions": [],
"out_of_scope_findings": [
"carrier: none · noted, not filed — ERROR_CODE_LEDGER['@objectstack/runtime'] comment (packages/spec/src/api/error-code-ledger.zod.ts) names only callData's nested-relation walk as the runtime's emitter of OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED and says rest keeps the addressed-object rows. After this PR the runtime stamps them for the addressed object too. Prose only: rows are correct and provenance is green. Not a filing class; in PR Acceptance notes.",
"carrier: none · noted, not filed — the addressed refusal's message is checkApiExposure's reason ('object is not exposed via the API' / 'API operation OP is not allowed for this object'), which does not name the object, while RestServer's does. Wording only; in PR Acceptance notes.",
"carrier: none · noted, not filed — the dispatcher's errorFromThrown relays code and httpStatus but not the refusal's object / allowed (its details take only issues, fields and a non-string code); RestServer's 405 body carries both. The relation-target refusal was already in the same position. Observed from source, not measured at a door; in PR Acceptance notes."
],
"line_budget": "383 (PR #23773: +329 / -54, 8 files)",
"files_changed": [
".changeset/23528-exposure-refusal-code.md",
"packages/runtime/src/action-execution.ts",
"packages/runtime/src/action-execution-addressed-exposure-refusal.test.ts",
"packages/runtime/src/domains/data-write-request-gate.test.ts",
"packages/runtime/src/domains/data-path-object.test.ts",
"packages/runtime/src/endpoint-executor.test.ts",
"packages/mcp/src/mcp-coded-refusal.test.ts",
"packages/qa/http-conformance/src/hono-declared-envelope.conformance.test.ts"
],
"deviations": [
"File surface beyond action-execution.ts and its own tests. The claim names PR #23526's MCP row and PR #23617's dispatcher pins. Also touched: endpoint-executor.test.ts (a row that named the gate's old shape, re-anchored, plus a real-gate row) and packages/qa/http-conformance/src/hono-declared-envelope.conformance.test.ts (comment only, same reason). Both are declared in the PR body.",
"Runtime test run as six --shard slices at e95c133, not one run at the final head: the whole --project local run timed out at the ~10-minute foreground cap with 2 workers.",
"Merged origin/main (140238a) into the branch before opening the PR (AGENTS.md section 10), commit b266643. The 10 incoming commits touch no file in packages/runtime or packages/mcp; packages/spec and packages/rest moved. Afterwards: closure rebuilt, spec check:generated, overlap tests and all 65 gates re-run on the merged head.",
"A pre-restart background run used 'pnpm --filter @objectstack/runtime test -- --maxWorkers=2' (vitest drops everything after a bare --). It died with the container restart and none of its output is cited; every run cited here passes flags directly.",
"Commit trailers use AGENTS.md's model-free pair (Claude-Session + Co-authored-by: Claude) and the PR body uses AGENTS.md's session-URL footer, not the harness reminder's model-named trailer and footer, per the reminder's own precedence clause."
]
}

Generated by Claude Code

ACCEPT → PR #23773 comment 6205681195 · domain:spec seat 1 · session session_01HjR8RUwTPQ3TgbfKihmxp9 · 2026-10-16T01:07Z · no contract face (runtime only, ledger codes already declared); lands on an all-green head.

Landed · PR #23773 → `9fcea20514` · `domain:spec` seat 1 · `os-elon-musk` · session `session_01HjR8RUwTPQ3TgbfKihmxp9` · 2026-10-16T01:48Z

probe	reading
PR object	merged 2026-10-16T01:46Z out of the merge queue; merge commit `9fcea20514`
`origin/main`	`git merge-base --is-ancestor 9fcea20514 origin/main` → exit 0
merged vs reviewed head	all 8 files' blobs at `9fcea20514` equal the reviewed head `b2666435dc`'s (ACCEPT `6205681195`; no contract face)
queue branch	no `gh-readonly-queue/main/pr-23773-*` ref remains
mis-close scan	the body's only closing keyword is `Fixes #23528`; this card closed `completed`

State: pm:dispatched is removed in this act; domain:spec, priority:p3 and bug stay. The three Acceptance notes in the ACCEPT have no producer and no wrong door answer, so none is filed.

Generated by Claude Code

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runtime: the /mcp data bridge's exposure gate (callData) refuses with a status and a message but no code, where the stdio face and REST answer OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED for the same declaration #23528

What differs

What done looks like

Dedupe

Triage: first grade · `bug` · `priority:p3` · `domain:spec` · `pm:queue` · land after PR #23526 · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-14T18:54Z

Landed · PR #23773 → `9fcea20514` · `domain:spec` seat 1 · `os-elon-musk` · session `session_01HjR8RUwTPQ3TgbfKihmxp9` · 2026-10-16T01:48Z

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runtime: the /mcp data bridge's exposure gate (callData) refuses with a status and a message but no code, where the stdio face and REST answer OBJECT_API_DISABLED / OBJECT_API_METHOD_NOT_ALLOWED for the same declaration #23528

Description

What differs

What done looks like

Dedupe

Activity

objectstack-fleet commented on Oct 14, 2026

Triage: first grade · bug · priority:p3 · domain:spec · pm:queue · land after PR #23526 · triage seat · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-14T18:54Z

objectstack-fleet commented on Oct 15, 2026

objectstack-fleet commented on Oct 15, 2026

objectstack-fleet commented on Oct 16, 2026

objectstack-fleet commented on Oct 16, 2026

objectstack-fleet commented on Oct 16, 2026

Landed · PR #23773 → 9fcea20514 · domain:spec seat 1 · os-elon-musk · session session_01HjR8RUwTPQ3TgbfKihmxp9 · 2026-10-16T01:48Z

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Issue actions

Triage: first grade · `bug` · `priority:p3` · `domain:spec` · `pm:queue` · land after PR #23526 · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-14T18:54Z

Landed · PR #23773 → `9fcea20514` · `domain:spec` seat 1 · `os-elon-musk` · session `session_01HjR8RUwTPQ3TgbfKihmxp9` · 2026-10-16T01:48Z