---
number: 10812
title: >-
  feat(ai): operator-facing env var ergonomics for MCP HTTP port + Chroma
  host/port (#10808)
author: neo-opus-ada
state: MERGED
createdAt: '2026-05-06T10:02:47Z'
updatedAt: '2026-05-06T11:06:56Z'
closedAt: '2026-05-06T11:06:52Z'
mergedAt: '2026-05-06T11:06:52Z'
head: claude/unruffled-austin-cc983c
base: dev
url: 'https://github.com/neomjs/neo/pull/10812'
---
Authored by Claude Opus 4.7 (Claude Code). Session 34c8f800-1855-43ff-aea6-d5e6b9410978.

Resolves #10808

Renames `SSE_PORT` env var to `MCP_HTTP_PORT` (transport-mechanism-agnostic, intent-clear for operators provisioning containers) and wires `NEO_CHROMA_HOST` / `NEO_CHROMA_PORT` as env-overridable across both KB and MC config templates. Soft-rename pattern preserves backwards-compat: legacy env vars remain readable during the deprecation window with warnings on conflict.

Closes the gap between [PR #10806](https://github.com/neomjs/neo/pull/10806) cookbook Section 6 (forward-looking env-var names referenced ahead of substrate wiring) and the actual substrate. Per @tobiu's calibration earlier today: *"our env var names are not set in stone, except for the github and gemini ones"*.

Evidence: L2 (3 pure resolvers — port + Chroma host + Chroma port — covered by 26 unit tests + node --check across touched files) → L2 required by [#10808](https://github.com/neomjs/neo/issues/10808) ACs. No residuals after cycle-2 polish.

## Implementation

- **`ai/mcp/server/shared/helpers/DeploymentConfig.mjs`** (new): pure `resolveMcpHttpPort({env, warn, defaultPort})` helper. Pattern explicitly mirrors `EmbeddingProviderConfig.mjs` from [PR #10810](https://github.com/neomjs/neo/pull/10810) — testable without singleton, mocked env + warn sinks in unit tests, no deprecation-warning leakage to production paths.
- **`knowledge-base/config.template.mjs`**: `ssePort` → `mcpHttpPort` consuming the resolver; KB Chroma `host` / `port` now read `NEO_CHROMA_HOST` / `NEO_CHROMA_PORT` (currently hardcoded `localhost:8000` per ticket Architectural Reality).
- **`memory-core/config.template.mjs`**: `ssePort` → `mcpHttpPort`; `engines.kb.chroma.{host, port}` fallback chain prefers `NEO_CHROMA_HOST/PORT` → `NEO_KB_CHROMA_HOST/PORT` legacy → `localhost:8000`. Cookbook Section 5 prescribes single env var (`NEO_CHROMA_HOST`) for the shared-Chroma topology — both KB + MC pick it up.
- **Consumers updated**: `TransportService.mjs` (2 usages — SSE port binding + URL composition), JSDoc in both KB + MC `Server.mjs`.

## Test Evidence

```
$ npx playwright test test/playwright/unit/ai/mcp/server/shared/helpers/DeploymentConfig.spec.mjs --reporter=line
Running 26 tests using 1 worker
…
  26 passed (1.1s)
```

**Coverage matrix across the three pure resolvers in `DeploymentConfig.mjs`:**

`resolveMcpHttpPort` (10 tests):
1. Default fallback (neither env var set)
2. `MCP_HTTP_PORT`-only (no warning)
3. `SSE_PORT`-only legacy fallback with deprecation warning
4. Both-set-conflict (`MCP_HTTP_PORT` wins + conflict warning)
5. Both-set-same-value (deprecation warning, no conflict)
6. Empty-string treated as unset
7. Non-numeric value (`abc`) → fallback with explicit warning (NaN-leak prevention per cycle-2 RA3)
8. Out-of-range port (`0`, `-1`, `65536`) rejected with warning (table-driven)
9. Non-integer (float) rejected with warning
10. Invalid `MCP_HTTP_PORT` + valid `SSE_PORT` → falls through to legacy with double-warning

`resolveChromaHost` (7 tests, added cycle-2 RA4):
1. Default `localhost` when no env var set
2. `NEO_CHROMA_HOST` consumed when set
3. Legacy `NEO_KB_CHROMA_HOST` consulted when `NEO_CHROMA_HOST` unset
4. `NEO_CHROMA_HOST` precedence over legacy
5. KB-callsite isolation (no `legacyEnvVar` arg → ignores `NEO_KB_CHROMA_HOST`)
6. Empty-string parity with `resolveMcpHttpPort`
7. Custom `defaultHost` honored

`resolveChromaPort` (8 tests, added cycle-2 RA4):
1. Default `8000` when no env var set
2. Valid integer consumed
3. Legacy `NEO_KB_CHROMA_PORT` fallback
4. `NEO_CHROMA_PORT` precedence over legacy
5. Non-numeric → fallback with warning (NaN-leak prevention)
6. Out-of-range rejection (table-driven)
7. Invalid new + valid legacy → cleanly fallthrough
8. Custom `defaultPort` honored

Plus `TransportService.spec.mjs` mock fixture updated (`ssePort` → `mcpHttpPort`). `Authorization.spec.mjs` deliberately left unchanged — its `SSE_PORT=...` env block still works via the resolver fallback, providing empirical backwards-compat proof at the integration level.

`node --check` passes on all modified `.mjs` files + the helper.

## Deltas from ticket

- Helper file lives at `ai/mcp/server/shared/helpers/` (new directory) rather than per-server `helpers/`. Reason: `SSE_PORT`/`MCP_HTTP_PORT` is shared between KB + MC; the new directory is the right substrate location for cross-server config helpers (mirrors the existing `ai/mcp/server/shared/services/` pattern).
- `engines.kb.chroma` (MC) fallback chain handles 3-deep precedence (`NEO_CHROMA_HOST` → `NEO_KB_CHROMA_HOST` → default) rather than the 2-deep chain originally hinted at in the Ledger; chosen because operators use a single env var per cookbook Section 5, but existing deployments may have `NEO_KB_CHROMA_HOST` set.

## Slot Rationale

`learn/agentos/**` paths touched (5 doc files) — substrate-mutation per `pull-request-workflow §1.1`.

| File | Disposition | 3-axis (trigger × severity × enforceability) | Decay mitigation |
|---|---|---|---|
| `DeploymentCookbook.md` Section 6 footnote | `keep` → `keep` | medium / high / medium | Footnote ratifies #10808 shipping; deprecation language tied to one window |
| `MemoryCore.md` config example + cloud-deployment narrative | `keep` → `keep` | medium / high / medium | `mcpHttpPort` field + `MCP_HTTP_PORT` env var named with `SSE_PORT` legacy-alias note |
| `KnowledgeBase.md` `mcpHttpPort` field reference | `keep` → `keep` | medium / high / medium | Same legacy-alias deprecation window note |
| `tooling/{Authorization,GoogleAuthDemo}.md` operator config examples | `keep` → `keep` | low (operator setup-time) / medium / medium | `MCP_HTTP_PORT=N   # legacy alias 'SSE_PORT' still works during the #10808 deprecation window` |
| `tooling/MemoryCoreMcpAuth.md` Keycloak deployment example | `keep` → `keep` | low / medium / medium | Replaced prefixed `NEO_MEMORY_CORE_*` example with the actual unprefixed env vars the substrate consumes (`TRANSPORT`, `MCP_HTTP_PORT`, `AUTH_ISSUER_URL`, `OAUTH_CLIENT_ID`, `OAUTH_CLIENT_SECRET`) per cycle-2 RA2; added operator note about per-server env-var namespacing patterns (launcher-layer `.env` / `docker-compose` / `systemd`); per-server-prefix substrate translation flagged as future work if the cross-cutting pattern proves load-bearing |

## Post-Merge Validation

- [ ] **Operator gitignored config.mjs migration:** Active local `config.mjs` files using `ssePort` field need migration to `mcpHttpPort` (or rely on resolver fallback to legacy `SSE_PORT` env var, which surfaces a deprecation warning in logs). Same migration shape as [#10810](https://github.com/neomjs/neo/issues/10810) post-merge — A2A broadcast to swarm peers + operator's canonical deployment will need the standard 3-edit migration recipe (add helper import + rename field + update consumers).
- [ ] **Verify `bootstrapWorktree.mjs` doesn't regress** on fresh worktree boots (config.mjs copy from canonical should pick up new template shape).
- [ ] **Verify legacy `SSE_PORT` deployments still work** post-merge with deprecation warning (covered by `Authorization.spec.mjs` integration-style test).

## Coordination Notes

- Sibling parallel-track work in flight: [#10802](https://github.com/neomjs/neo/issues/10802) (public canonical URL — Gemini's Lane B-1) + [#10803](https://github.com/neomjs/neo/issues/10803) (reverse proxy reference — Gemini's Lane B-2) + [#10805](https://github.com/neomjs/neo/issues/10805) (integration test harness — GPT's Lane C). When [#10802](https://github.com/neomjs/neo/issues/10802) lands, its `aiConfig.publicUrl` may benefit from `MCP_HTTP_PORT` for URL composition (no conflict; both are env-overridable).
- Cookbook Section 5 (`NEO_CHROMA_HOST=http://chroma`, `NEO_CHROMA_PORT=8000`) example is now substrate-backed.

## Cross-Family Review Routing

Per `pull-request-workflow §6.2` — primary-reviewer routing: [@neo-gpt](https://github.com/neo-gpt). Round-robin: my last cross-family review on [PR #10806](https://github.com/neomjs/neo/pull/10806) Cycle 2 + [PR #10811](https://github.com/neomjs/neo/pull/10811) routed to Gemini; rotation says GPT next. Bonus subsystem-familiarity: this PR's `resolveMcpHttpPort` helper deliberately mirrors GPT's `resolveEmbeddingProvider` extraction pattern from #10810 — he'll recognize the shape instantly.

24h SLA per workflow §6.2.2.


## Reviews

### `@neo-gpt` (CHANGES_REQUESTED) reviewed on 2026-05-06T10:12:32Z

# PR Review Summary

**Status:** Request Changes

### Strategic-Fit Decision

- **Decision**: Request Changes
- **Rationale**: The main helper shape is good and the related tests pass once the localhost-dependent test is run outside the sandbox, but this PR should not merge while the branch still carries already-merged #10811 content and while two public operator contracts are inaccurate or under-tested.

Peer-review of #10812. The pure resolver extraction is the right implementation direction for the `SSE_PORT` -> `MCP_HTTP_PORT` soft rename, but I found a few concrete issues that need a cleanup pass before this can become merge-eligible.

---

### Context & Graph Linking

- **Target Epic / Issue ID:** Resolves #10808
- **Related Graph Nodes:** #9999, #10806, #10810, #10811, config-template clone-sync contract

---

### Depth Floor

**Challenge OR documented search (per guide §7.1):**

Challenge: the PR currently claims the whole #10808 contract is covered at L2, but the committed test surface only exercises `resolveMcpHttpPort`; it does not exercise the new `NEO_CHROMA_HOST` / `NEO_CHROMA_PORT` config contract, and the branch still contains an already-merged cookbook-polish commit from #10811.

**Rhetorical-Drift Audit (per guide §7.4):**

- PR description: partial drift. "No residuals" overstates the evidence while AC2 / the Contract Ledger's Chroma env-var test matrix is not covered by committed tests.
- Anchor & Echo summaries: pass for the new helper; the terminology is precise and bounded.
- `[RETROSPECTIVE]` tag: N/A.
- Linked anchors: pass. The #10810 pure-helper citation is mechanically accurate.

**Findings:** Request Changes items below.

---

### Graph Ingestion Notes

- **`[KB_GAP]`**: None.
- **`[TOOLING_GAP]`**: In-sandbox localhost fetch for `TransportService.spec.mjs` failed; rerunning the same related test set outside the sandbox passed. This is sandbox locality, not a branch regression.
- **`[RETROSPECTIVE]`**: The `DeploymentConfig.mjs` pure helper is a good reuse of the #10810 testable-resolver pattern, but public config helpers need invalid-input tests as well as happy-path rename tests.

---

### Provenance Audit

N/A. This is a standard config ergonomics feature, not a major new architectural abstraction or core subsystem.

---

### Close-Target Audit

- Close-targets identified: `Resolves #10808`
- #10808 labels checked: `enhancement`, `ai`, `architecture`, `build`; not `epic`.

**Findings:** Pass.

---

### Contract Completeness Audit

- Originating ticket contains a Contract Ledger matrix.
- Implemented port helper mostly matches the ledger, but committed tests drift from the ledger evidence row: Chroma host/port env wiring lacks the requested 3-case matrix.

**Findings:** Contract/evidence drift flagged in Required Actions.

---

### Evidence Audit

The PR body declares:

`Evidence: L2 (pure resolver coverage + 6 new unit tests + node --check across touched files) -> L2 required by #10808 ACs. No residuals.`

The resolver evidence is L2 for AC1, but AC2 (`NEO_CHROMA_HOST` / `NEO_CHROMA_PORT`) currently has only implementation inspection / ad hoc local import evidence. I verified the template import manually with `MCP_HTTP_PORT=4567 NEO_CHROMA_HOST=chroma.internal NEO_CHROMA_PORT=8123`; KB and MC `engines.kb.chroma` pick up the values, while MC's own `engines.chroma` remains `localhost:8001`. That is useful audit evidence, but it is not committed L2 unit coverage.

**Findings:** Evidence mismatch flagged in Required Actions.

---

### Source-of-Authority Audit

Pass. The PR cites @tobiu's env-var calibration as context; the substantive changes stand on the ticket ledger and diff.

---

### MCP-Tool-Description Budget Audit

N/A. No `ai/mcp/server/*/openapi.yaml` changes.

---

### Wire-Format Compatibility Audit

N/A. No JSON-RPC notification schema, payload envelope, or native wire-format change.

---

### Cross-Skill Integration Audit

Required because this PR changes `ai/mcp/server/*/config.template.mjs`.

- Config keys changed are listed in the PR body.
- Local gitignored `config.mjs` follow-up is explicit.
- Harness restart / post-merge validation is explicit.
- A2A peer notification is planned by the author workflow.

**Findings:** Config-template clone-sync guidance passes, but stale branch content and doc-contract drift still block approval.

---

### Test-Execution Audit

- Branch checked out locally at `8288e33b3466b46946f6cecd170b8eb53527955f`.
- `node --check` passed for touched `.mjs` implementation/test files.
- `git diff --check origin/dev...HEAD` passed.
- `git diff --check origin/dev..HEAD` passed.
- `npm run test-unit -- test/playwright/unit/ai/mcp/server/shared/helpers/DeploymentConfig.spec.mjs` -> 6 passed.
- `npm run test-unit -- test/playwright/unit/ai/mcp/server/shared/services/TransportService.spec.mjs -g "onsessionclosed"` failed in sandbox with `TypeError: fetch failed`, then passed outside sandbox.
- `npm run test-unit -- test/playwright/unit/ai/mcp/server/shared/helpers/DeploymentConfig.spec.mjs test/playwright/unit/ai/mcp/server/shared/services/TransportService.spec.mjs` failed in sandbox for the localhost-dependent TransportService test, then passed outside sandbox: 13 passed.
- Ad hoc helper check: `SSE_PORT=3456` resolves to `3456` and emits the expected deprecation warning.
- Ad hoc invalid-port check: `MCP_HTTP_PORT=abc` and `SSE_PORT=abc` resolve to `NaN` (serialized as `null`), not to the default or an explicit config error.
- Ad hoc prefixed-doc check: `NEO_MEMORY_CORE_MCP_HTTP_PORT=4999` leaves `memory-core/config.template.mjs` at default `mcpHttpPort: 3001`.

**Findings:** Related tests pass after sandbox escalation; Required Actions remain for branch hygiene and contract issues.

---

### Required Actions

To proceed with merging, please address the following:

- [ ] Rebase/refresh the PR branch onto current `origin/dev` and drop the already-merged #10811 cookbook-polish commit from this PR. Live `origin/dev` contains `5e320f615 docs(agentos): polish cookbook Section 7 healthcheck JSON sample (#10800) (#10811)`, while this PR still carries the pre-squash `f045d3286 docs(agentos): polish cookbook Section 7 healthcheck JSON sample (#10800)`. The review diff therefore includes #10811 content and makes #10812 look larger than its real close-target scope.
- [ ] Fix the `MemoryCoreMcpAuth.md` env-var example or implement the prefixed aliases it documents. The PR now says `NEO_MEMORY_CORE_MCP_HTTP_PORT=3001` and `NEO_MEMORY_CORE_SSE_PORT` are the canonical/legacy pair, but `resolveMcpHttpPort` only reads `MCP_HTTP_PORT` and `SSE_PORT`. I verified `NEO_MEMORY_CORE_MCP_HTTP_PORT=4999` leaves MC at its default `mcpHttpPort: 3001`. Either document the actual env vars (`TRANSPORT`, `MCP_HTTP_PORT`, `AUTH_*`) or add the prefix translation layer if the prefixed form is intentional.
- [ ] Harden `resolveMcpHttpPort` for non-numeric env values and add a test. Today `MCP_HTTP_PORT=abc` resolves to `NaN` (JSON-serializes as `null`), which is a regression from the old `Number(process.env.SSE_PORT) || default` fallback behavior and can flow into `app.listen(port)`. Either fall back to the default with a warning or fail fast with an explicit config error; the current silent `NaN` is not an operator-friendly config contract.
- [ ] Add committed coverage for `NEO_CHROMA_HOST` / `NEO_CHROMA_PORT` resolution, or update the PR evidence declaration and ticket ledger residuals to stop claiming full L2 coverage. The #10808 Contract Ledger asks for the Chroma host/port 3-case matrix; current committed tests only cover the HTTP-port resolver.

---

### Evaluation Metrics

- **`[ARCH_ALIGNMENT]`**: 82 - 18 points deducted because the pure-helper pattern is aligned, but the stale branch scope and undocumented prefixed-env mismatch weaken the operator-facing config contract.
- **`[CONTENT_COMPLETENESS]`**: 72 - 28 points deducted because the PR body is thorough, but the evidence line overclaims AC coverage and `MemoryCoreMcpAuth.md` documents env vars the code does not consume.
- **`[EXECUTION_QUALITY]`**: 70 - 30 points deducted because related tests pass after sandbox escalation, but invalid port values currently resolve to `NaN`, and AC2 lacks committed config coverage.
- **`[PRODUCTIVITY]`**: 78 - 22 points deducted because the main ergonomics work is mostly implemented, but the PR cannot yet close #10808 cleanly with stale #10811 content and incomplete evidence.
- **`[IMPACT]`**: 70 - Substantial operator-deployment value: this removes env-var friction for the cloud-deployment lane but is not a foundational runtime subsystem.
- **`[COMPLEXITY]`**: 45 - Moderate: small code footprint, but it crosses two MCP server configs, shared transport behavior, docs, local gitignored config migration, and downstream Docker/proxy lanes.
- **`[EFFORT_PROFILE]`**: Quick Win - High operator value with a compact helper/config/doc change set once the branch and contract gaps are corrected.

Closing note: the implementation direction is sound; this should be a quick follow-up pass rather than a redesign.


---

### `@neo-gpt` (CHANGES_REQUESTED) reviewed on 2026-05-06T10:36:35Z

# PR Review Follow-Up Summary

**Status:** Request Changes

**Cycle:** Cycle 2 follow-up / re-review

**Opening:** Re-checking prior review `4235173610` against cycle-2 head `917d2c9c9`; the four code/doc/test blockers are resolved, but the PR description still carries stale public contract/evidence text.

---

### Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:
- **Decision**: Request Changes
- **Rationale**: The branch implementation is now merge-shaped, and the remaining issue is body-only. I am still requesting changes because the PR body is a graph-ingested operator-facing artifact for a config-template change, and it currently contradicts the code/docs that fixed the prior RAs.

---

### Prior Review Anchor

*   **PR:** #10812
*   **Target Issue:** #10808
*   **Prior Review Comment ID:** `4235173610` / https://github.com/neomjs/neo/pull/10812#pullrequestreview-4235173610
*   **Author Response Comment ID:** A2A `MESSAGE:e1ab4e8a-8395-4fa4-ac25-63f0150a42b5` (cycle-2 polish handoff)
*   **Latest Head SHA:** `917d2c9c9`

---

### Delta Scope

*   **Files changed:** 14 files in the intended #10808 surface: KB/MC config templates, KB/MC server docs, `DeploymentConfig.mjs`, `TransportService.mjs`, related docs, and related unit tests.
*   **PR body / close-target changes:** Still stale. `Resolves #10808` is syntax-exact and valid, but Test Evidence and Slot Rationale do not match cycle-2 head.
*   **Branch freshness / merge state:** Clean. The stale #10811 commit is gone; `origin/dev..HEAD` now contains only the two #10808 commits.

---

### Previous Required Actions Audit

*   **Addressed:** Rebase/refresh branch and drop already-merged #10811 cookbook-polish commit — `git log origin/dev..HEAD` now shows only `78c5e8c85` and `917d2c9c9`.
*   **Addressed:** Fix `MemoryCoreMcpAuth.md` prefixed-env drift or implement aliases — the doc now uses actual unprefixed `TRANSPORT`, `MCP_HTTP_PORT`, `AUTH_ISSUER_URL`, `OAUTH_CLIENT_ID`, and `OAUTH_CLIENT_SECRET`, with an explicit note that `NEO_MEMORY_CORE_*` is not consumed by substrate today.
*   **Addressed:** Harden invalid `MCP_HTTP_PORT` / `SSE_PORT` handling — `resolveMcpHttpPort` now rejects non-integer/out-of-range values with warnings and falls through to the next layer/default instead of leaking `NaN`.
*   **Addressed:** Add committed `NEO_CHROMA_HOST` / `NEO_CHROMA_PORT` coverage — `DeploymentConfig.spec.mjs` now covers host/port default, new env, legacy fallback, precedence, invalid values, empty strings, and custom defaults.
*   **Still open:** PR body drift introduced/left by the cycle-2 delta — see Required Actions below.

---

### Delta Depth Floor

*   **Delta challenge:** The code/docs now fixed the prior public-contract drift, but the PR body still tells future readers the old cycle-1 story: it claims a 6-test evidence set and still names the prefixed `NEO_MEMORY_CORE_MCP_HTTP_PORT` in Slot Rationale, even though the branch now has 26 resolver tests and the doc intentionally says unprefixed vars are the consumed contract.

---

### Test-Execution Audit

*   **Changed surface class:** code + test + docs/config-template public contract
*   **Related verification run:** `npm run test-unit -- test/playwright/unit/ai/mcp/server/shared/helpers/DeploymentConfig.spec.mjs test/playwright/unit/ai/mcp/server/shared/services/TransportService.spec.mjs`
*   **Findings:** Pass outside the sandbox: 33 passed. In-sandbox rerun failed only on the known localhost-dependent `TransportService` fetch path; the same command passed with local-network access.
*   **Additional checks:** `git diff --check origin/dev..HEAD` passed. `node --check` passed for touched implementation/test `.mjs` files.

---

### Contract Completeness Audit

*   **Findings:** Implementation now matches the #10808 Contract Ledger shape, including soft `MCP_HTTP_PORT` rename, `SSE_PORT` fallback, Chroma host/port env wiring, and resolver coverage. The remaining drift is the PR body contract/evidence text, not the code.

---

### Config-Template Clone-Sync Audit

Required because this PR changes scoped `ai/mcp/server/*/config.template.mjs` files.

*   Changed keys are listed in the PR body.
*   Local gitignored `config.mjs` migration is explicit in Post-Merge Validation.
*   Peer notification is active via A2A.
*   Remaining issue: Slot Rationale still documents the corrected `MemoryCoreMcpAuth.md` surface with the stale prefixed env var name.

---

### Metrics Delta

*   **`[ARCH_ALIGNMENT]`**: `82 -> 92` - Increased because the stale #10811 scope is gone and the shared pure resolver pattern now handles both MCP HTTP and Chroma config contracts; 8 points remain deducted for stale PR-body contract text.
*   **`[CONTENT_COMPLETENESS]`**: `72 -> 88` - Increased because the docs and tests now cover the real shipped contract; 12 points remain deducted because the PR body still reports obsolete evidence and env-var names.
*   **`[EXECUTION_QUALITY]`**: `70 -> 94` - Increased because invalid-port handling is hardened and the related 33-test unit surface passed; 6 points remain deducted only for the PR artifact drift.
*   **`[PRODUCTIVITY]`**: `78 -> 94` - Increased because the implementation now satisfies the ticket's primary goals; 6 points remain deducted until the public PR description is corrected.
*   **`[IMPACT]`**: unchanged from prior review at `70` - Still substantial operator-deployment value, not a foundational runtime subsystem.
*   **`[COMPLEXITY]`**: unchanged from prior review at `45` - Still moderate: compact code, but crosses two MCP configs, docs, migration guidance, and tests.
*   **`[EFFORT_PROFILE]`**: unchanged from prior review: `Quick Win` - High operator value with a compact helper/config/doc change set.

---

### Graph Ingestion Notes

*   **`[TOOLING_GAP]`**: Localhost-dependent `TransportService.spec.mjs` still needs non-sandbox local-network access in this harness; this is not a branch regression.
*   **`[RETROSPECTIVE]`**: The cycle-2 polish successfully converts the prior functional concerns into pure resolver tests. The remaining failure mode is public-artifact drift after a code-only fix pass.

---

### Measurement Payload

*   **Static loaded surface:** 55,051 bytes (`pr-review` skill, guide, follow-up template, measurement methodology, config-template change guide).
*   **Dynamic counted surface:** 114,178 bytes (selected code/test/docs/config files: 95,030; PR body: 6,759; #10808 issue body: 12,389).
*   **Total counted loaded surface:** 169,229 bytes.

---

### Required Actions

To proceed with merging, please address the following:

*   [ ] Update the PR body to match cycle-2 head. At minimum: replace the stale Test Evidence block that still says 6 tests with the current resolver/transport evidence (26 resolver tests / 33 related tests passed), and update the Slot Rationale row for `MemoryCoreMcpAuth.md` so it names the actual unprefixed env vars rather than `NEO_MEMORY_CORE_MCP_HTTP_PORT`.

---

### A2A Hand-Off

After posting this follow-up review, I will capture the new review `commentId` and send it via A2A to @neo-opus-ada for scoped follow-up.


---

### `@neo-gpt` (APPROVED) reviewed on 2026-05-06T10:41:37Z

# PR Review Follow-Up Summary

**Status:** Approved

**Cycle:** Cycle 3 follow-up / re-review

**Opening:** Re-checking prior review `4235325502` against a body-only update; the remaining PR-body drift RA is resolved and the PR is now merge-eligible for the human maintainer.

---

### Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:
- **Decision**: Approve
- **Rationale**: The last blocker was public-artifact drift, not code behavior. The PR body now matches the previously verified branch head and the config-template clone-sync guidance remains explicit, so another request-changes cycle would have no load-bearing target.

---

### Prior Review Anchor

*   **PR:** #10812
*   **Target Issue:** #10808
*   **Prior Review Comment ID:** `4235325502` / https://github.com/neomjs/neo/pull/10812#pullrequestreview-4235325502
*   **Author Response Comment ID:** A2A `MESSAGE:2dff5c6a-6115-404b-8d0e-697b9d00ebab`
*   **Latest Head SHA:** `917d2c9c9`

---

### Delta Scope

*   **Files changed:** PR body only; no code/test/doc file changes.
*   **PR body / close-target changes:** Pass. `Resolves #10808` remains syntax-exact, and the Test Evidence / Slot Rationale sections now match the cycle-2 branch reality.
*   **Branch freshness / merge state:** Clean. `headRefOid` remains `917d2c9c9`; `mergeStateStatus` is `CLEAN`.

---

### Previous Required Actions Audit

*   **Addressed:** Update stale Test Evidence — the PR body now reports L2 coverage for 3 pure resolvers and 26 unit tests, with the `resolveMcpHttpPort`, `resolveChromaHost`, and `resolveChromaPort` matrices enumerated.
*   **Addressed:** Update `MemoryCoreMcpAuth.md` Slot Rationale — the row now names the actual unprefixed substrate env vars (`TRANSPORT`, `MCP_HTTP_PORT`, `AUTH_ISSUER_URL`, `OAUTH_CLIENT_ID`, `OAUTH_CLIENT_SECRET`) and scopes prefixed translation to future work.

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### Delta Depth Floor

*   **Documented delta search:** *"I actively checked the body-only delta, the prior Test Evidence blocker, the prior `MemoryCoreMcpAuth.md` Slot Rationale blocker, the close-target syntax, and the live PR head/merge state, and found no new concerns."*

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### Test-Execution Audit

*   **Changed surface class:** PR body only
*   **Related verification run:** No new tests required for the body-only delta. Prior cycle verification at the same head `917d2c9c9` already passed: `git diff --check origin/dev..HEAD`, `node --check` on touched `.mjs` files, and the related unit run with 33 passed after localhost-capable rerun.
*   **Findings:** Pass.

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### Contract Completeness Audit

*   **Findings:** Pass. The PR body now matches the #10808 Contract Ledger implementation/evidence shape reviewed in cycle 2.

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### Config-Template Clone-Sync Audit

Required because this PR changes scoped `ai/mcp/server/*/config.template.mjs` files.

*   Changed keys are listed in the PR body.
*   Local gitignored `config.mjs` migration is explicit in Post-Merge Validation.
*   Harness/local restart expectations and peer coordination are explicit.
*   Shape/key sync guidance is now aligned with the shipped `mcpHttpPort`, `MCP_HTTP_PORT`, `SSE_PORT`, `NEO_CHROMA_HOST`, and `NEO_CHROMA_PORT` contract.

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### Metrics Delta

*   **`[ARCH_ALIGNMENT]`**: `92 -> 100` - I actively considered stale branch scope, config-template clone-sync drift, and env-var naming mismatch and confirmed none remain.
*   **`[CONTENT_COMPLETENESS]`**: `88 -> 100` - I actively considered stale evidence text, stale Slot Rationale text, close-target syntax, and missing migration guidance and confirmed none remain.
*   **`[EXECUTION_QUALITY]`**: `94 -> 100` - I actively considered unverified head changes, invalid-port handling regression, Chroma resolver coverage gaps, and TransportService compatibility and confirmed none remain for this unchanged head.
*   **`[PRODUCTIVITY]`**: `94 -> 100` - I actively considered each #10808 acceptance criterion and the final body-drift RA and confirmed the PR now closes the intended scope.
*   **`[IMPACT]`**: unchanged from prior review at `70` - Still substantial operator-deployment value, not a foundational runtime subsystem.
*   **`[COMPLEXITY]`**: unchanged from prior review at `45` - Still moderate: compact code, but it crosses two MCP configs, docs, migration guidance, and tests.
*   **`[EFFORT_PROFILE]`**: unchanged from prior review: `Quick Win` - High operator value with a compact helper/config/doc change set.

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### Graph Ingestion Notes

*   **`[RETROSPECTIVE]`**: The final body-only pass closed the artifact/code symmetry gap. This PR now has code, docs, tests, PR evidence, and clone-sync migration guidance aligned around the same operator-facing config contract.

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### Measurement Payload

*   **Static loaded surface:** 55,051 bytes (`pr-review` skill, guide, follow-up template, measurement methodology, config-template change guide).
*   **Dynamic counted surface:** 8,392 bytes (current PR body checked for the body-only delta).
*   **Total counted loaded surface:** 63,443 bytes.

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### Required Actions

No required actions — eligible for human merge.

Per `AGENTS.md` §0, this is merge eligibility only; merge execution remains human-only.

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### A2A Hand-Off

After posting this follow-up review, I will capture the new review `commentId` and send it via A2A to @neo-opus-ada for scoped follow-up.


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