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Codex Advisor

David Schmidt / Zero Delta LLC v1.4.10

Architecture and code advice.

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From the developer

Declared capabilities

  • Interactive
  • Read

Not specified in the available declarations: limitations, pricing & account requirements.

Onboarding example

Should we split this service into microservices?
Sources & dates

Developer declarations; not independently tested. Listing last checked Nov 7, 2026. Package observed Nov 6, 2026.

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Description

From the marketplace listing

Codex Advisor helps software developers review architecture, API interfaces, data models, and migration plans in Codex CLI and Codex desktop. Each consultation returns one recommendation with tradeoffs, risks, and acceptance checks. Advisor sends bounded technical context to OpenAI for inference through your authenticated account and allowance; Zero Delta runs no relay or telemetry backend and does not automatically receive consultation packets or responses. Redacted receipts you voluntarily share through support channels are covered by the privacy policy. The consultation child is launched in a read-only sandbox and instructed to use zero tools; after execution the launcher inspects the recorded runtime and rejects the result if it observes any tool call, which is a post-execution acceptance check, not preventive tool-free isolation. The local launcher writes temporary files and Codex session records. The root agent owns implementation and final decisions; Advisor does not implement, deploy, or perform final review. Requires Python 3.11+, a local Codex host, jq, a supported POSIX shell, and a persisted session. Standard uses Terra/high, Specialist uses GPT-6.1 Sol/high, and explicit-only Astra/high is available for the most complex uses.

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Publisher full description

Codex Advisor helps software developers review architecture, API interfaces, data models, and migration plans in Codex CLI and Codex desktop. Each consultation returns one recommendation with tradeoffs, risks, and acceptance checks. Advisor sends bounded technical context to OpenAI for inference through your authenticated account and allowance; Zero Delta runs no relay or telemetry backend and does not automatically receive consultation packets or responses. Redacted receipts you voluntarily share through support channels are covered by the privacy policy. The consultation child is launched in a read-only sandbox and instructed to use zero tools; after execution the launcher inspects the recorded runtime and rejects the result if it observes any tool call, which is a post-execution acceptance check, not preventive tool-free isolation. The local launcher writes temporary files and Codex session records. The root agent owns implementation and final decisions; Advisor does not implement, deploy, or perform final review. Requires Python 3.11+, a local Codex host, jq, a supported POSIX shell, and a persisted session. Standard uses Terra/high, Specialist uses GPT-6.1 Sol/high, and explicit-only Astra/high is available for the most complex uses.

What changed

· 4 observations

Capabilities & instructions

Supporting files updated; open the comparison for details. Skill instructions changed from “GPT-6 Sol / `high` with the same zero-setup launch permission, only when targeted evidence still leaves unresolved a cross-module or system design,...” to “GPT-6.1 Sol / `high` with the same zero-setup launch permission, only...

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Positioning & listing

Category changed from “Productivity” to “Developer Tools”. Long description changed from “automatically adds a fresh, read-only second opinion when Codex identifies a material technical decision. Standard remains Terra/high for ordinary bounded...” to “helps software developers review architecture, API interfaces,...

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Technical updates · 1

Package or technical metadata updated

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Keywords

Files & skills

File archives

Plugin package38 files · 551 KBBrowse files →
Skill instructions
consultation17.1 KB

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---
name: consultation
description: Consult for ordinary material architecture, interface, data-model, or explicit advisor, generic-advisor, authorization, challenge, second-opinion, or architecture-review choices; or, when targeted evidence still leaves unresolved cross-module or system design, compatibility or concurrency boundaries, competing diagnoses, security, privacy, or trust boundaries, recovery, irreversible-state migration, or data-loss decisions; and the completion consultation that complex multi-phase or multi-file work takes before it is declared complete. Skip factual/status/summarization work, fully determined mechanical edits, formatting/renaming/docs synchronization, settled-plan execution, final review owned elsewhere, explicit no-delegation/root-only requests, and every borderline case.
---

# Advisor consultation

Use one fresh, read-only, zero-tool advisor only when the task has a concrete material
decision. The root owns architecture, implementation routing, verification, and acceptance.
Before consultation, the root performs any repository or web research and supplies
enough relevant evidence and source references in the five-section decision packet for
the advisor to recommend a path.

The root may assign bounded evidence gathering to separate research workers before assembling the decision packet; the consulted advisor still uses zero tools and never delegates.

If that evidence cannot settle the question, a valid
advisor result may instead identify a concrete research-first next step, missing
evidence, research questions, or bounded brainstorming areas. The advisor does not
inspect files, call tools, fetch the web, or conduct independent research.

## Declare the route

Read-only discovery may ground the decision. For a consult candidate, inspect the
parent identity before the first implementation write and before its decision record:

```sh
sh <absolute-installed-plugin-root>/scripts/inspect-parent-runtime.sh
```

The preflight uses only `CODEX_THREAD_ID` and the caller-supplied/default sessions
root. It accepts an unambiguous persisted parent with a recognized sandbox policy;
the parent itself need not be read-only because the consultation runs in a distinct
explicitly read-only Codex process. A missing, ambiguous, malformed, or conflicting
parent runtime is unavailable. Do not use `CODEX_SESSION_ID` as a fallback. Emit
exactly one record:

```text
ADVISOR DECISION
route: consult | skip | unavailable
reason: <one task-specific sentence>
question: <bounded decision question, or none>
```

Consult when at least one positive trigger in the description applies. Skip when all
applicable work is routine, the user forbids delegation, or eligibility is borderline.
General quality is not a decision question.

Complex work takes one completion consultation before it is declared complete. This
applies when the task already took `route: consult`, or when it spans multiple phases,
files, or sessions. Emit a second `ADVISOR DECISION` and consult before reporting the
work done. The bounded question is whether the finished work meets its stated contract
and what evidence would falsify that. It is not a final diff review or release
verification, which stay outside this plugin and with their existing owner: the root
still owns verification and acceptance, and the advisor still uses zero tools and sees
only the packet. Routine, single-step, and already-skipped work takes no completion
consultation.

An identified parent uses `route: consult`, including a normal `workspace-write`
root. An unavailable parent uses `route: unavailable`, emits no `ADVISOR CALL`,
starts no consultation process, and does not block the root's own work. The ordinary
`route: skip` path is unchanged.
A non-Codex surface has no supported local transport, so it takes `route: unavailable` and emits no `ADVISOR CALL` or `ADVISOR RESULT`.

## Explicit configuration is separate

The bundled installed `advisor.toml` is live configuration for normal `-

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Referenced files: 2 — file references are metadata, not package contents.

Package details

Publisher declarations from the archived package. These are separate from our research and the live service's terms.

Package license
MIT
Package author
David Schmidt / Zero Delta LLC
Keywords
See keywords

Declared capabilities

  • Interactive
  • Read

Package observed Nov 6, 2026.

Technical details
First seen
Sep 30, 2026 · 22:02 UTC
Last seen
Nov 7, 2026 · 06:00 UTC
Latest observed change
Oct 28, 2026 · 13:16 UTC
Collection status
Collected

plugins_6a984f37e9c88191a2a777998f7b0521

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