Use CoTrading skills in Codex CLI

Target: Codex CLI in local PowerShell on Windows 11 x64. Package-specific support is established by its published test record, not by the fact that Codex recognizes SKILL.md. Official source checked 2026-10-30: OpenAI Build skills.

Obtain and inspect a selected package

Before installation, prepare Python 3.12 for every current 0.1.0 A-batch package: S01 earnings review, S02 thesis check, S04 rule specification and S05 ETF verification. Their bundled deterministic tools use only the Python standard library, with no third-party Python dependencies or network access for the teaching inputs. Model processing in Codex is a separate service and may be remote. Text methods still need the runtime even though they need no live market feed.

In PowerShell, py -3.12 --version only checks the runtime. If it is unavailable, stop the fixed-tool task and arrange the documented isolated environment separately; do not automatically install, elevate privileges or change global Python settings. Finding a runtime does not prove a method ran successfully.

Choose a host and version on the skill page. A valid package contains one cotrading-{slug} folder with SKILL.md at its root, bilingual READMEs, license/notices, manifest and relevant examples or scripts. Verify size and SHA-256 against that version's page, then read the contents before running tools.

PowerShell hash inspection uses the actual ZIP you downloaded:

$packagePath = Read-Host 'ZIP path'
Get-FileHash -LiteralPath $packagePath -Algorithm SHA256

Do not install from an invented repository URL or run a script that replaces all existing skills. Free methods do not include every model or data service charge.

Personal installation

Copy only the chosen skill folder to %USERPROFILE%\.agents\skills. S01 must end at %USERPROFILE%\.agents\skills\cotrading-earnings-review\SKILL.md. Check for an extra archive/version folder level. If a folder of the same name exists, compare manifests and preserve local changes outside scanned directories before choosing an update.

In a Codex conversation, use /skills or type $ to select the skill. Explicit S01 mention: $cotrading-earnings-review. These are AI conversation controls, not PowerShell commands. Other names are cotrading-thesis-check, cotrading-strategy-spec and cotrading-etf-backtest. If an update is not visible, inspect the structure and name, then restart the session as needed.

First verified run

Copy the package's examples to your chosen research folder and start the conversation there. Ask first for a read-only inventory of method version, files, dependencies, output location and gaps. Then request the sample task in a new report directory, leaving inputs intact.

Verify source rows and arithmetic. S01's synthetic example has cash flow 100→92, net profit 120→132 and current conversion 69.70%. S04 must not mark a draft confirmed without actual confirmation. S05 must match the event timing, fee and daily values in the four-day example. Preserve completed, needs-input and failed statuses truthfully.

Dependency and recovery scope

S01/S02/S04/S05 all use Python 3.12 and the package's documented isolated setup. Inspect the actual README, requirements.lock and dependency manifest; the current teaching tools require no third-party Python packages. Additional parsing tools are a separate choice. Missing dependencies stop the fixed-tool task; do not substitute model mental arithmetic or claim that execution occurred. S04's specification tool does not imply a backtest has run.

Host credentials belong in supported host/provider settings. The website never needs your keys. Updates and removal affect only the selected installed folder, while separate input/report folders remain. See troubleshooting for conflicts, unreadable files and quota failures. This guide does not claim Claude web, desktop imports or other operating systems have passed.