Agent skill

Codex Slides Known Errors

by nexu-io in nexu-io/codex-slides

Diagnose and recover from Codex Slides plugin, MCP, Browser handoff, local runtime, durable run, project resume, rendering, Design Files, export, and version-contract failures.

MITAuto-check passedDocuments & Office

Install Codex Slides Known Errors

skills CLI
$ npx skills add nexu-io/codex-slides --skill codex-slides-known-errors -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nexu-io/codex-slides codex-slides-known-errors --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nexu-io/codex-slides.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/codex-slides-known-errors .claude/skills/codex-slides-known-errors && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
codex-slides-known-errors
GitHub stars
924
Token cost
~713 tokens
SKILL.md length
354 words
Files
2
Skills in repo
7
Repo updated
First seen
Licence
MIT

At a glance

Diagnose and recover from Codex Slides plugin, MCP, Browser handoff, local runtime, durable run, project resume, rendering, Design Files, export, and version-contract failures.

  • A project appears stale
  • SKILL.md covers Runtime and installation, Durable runs, Browser handoff and project… and Rendering and project state, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Codex and the Browser disagree

What it does

Codex Slides Known Errors is an agent skill from nexu-io/codex-slides. Diagnose and recover from Codex Slides plugin, MCP, Browser handoff, local runtime, durable run, project resume, rendering, Design Files, export, and version-contract failures. Use when a tool fails, a run stalls, a project appears stale, or Codex and the Browser disagree.

Its SKILL.md is about 710 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).

It sits in Documents & Office, covering Slides and decks. It works with Model Context Protocol and Microsoft PowerPoint. The repository describes itself as: 🎨 Open-source AI slide studio inside Codex: image-native decks, every slide a full visual canvas. ⚡ 10+ high-quality slides in ~4–5 minutes — Fast mode renders every page in… The licence is MIT.

When your agent uses it

  • A project appears stale
  • Codex and the Browser disagree

Example prompts

  • “/codex-slides-known-errors”

What it can do on your machine

Read from SKILL.md and the folder at commit dbc2a59. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Codex Slides Known Errors loads about 713 tokens when it runs. Until then it costs about 75 tokens; SKILL.md has 354 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~75
When it runs · the whole SKILL.md, loaded when a task matches
~713

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nexu-io/codex-slides at commit dbc2a59, republished under its MIT licence (© nexu-io). 354 words, ~713 tokens.

Download SKILL.mdSave it as .claude/skills/codex-slides-known-errors/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
codex-slides-known-errors
description
Diagnose and recover from Codex Slides plugin, MCP, Browser handoff, local runtime, durable run, project resume, rendering, Design Files, export, and version-contract failures. Use when a tool fails, a run stalls, a project appears stale, or Codex and the Browser disagree.

Codex Slides Known Errors

Classify the failure before retrying. Preserve the same project id and run id; do not recreate a deck merely because a Browser tab closed or a wait timed out.

Runtime and installation

  • Plugin version contract fails: .codex-plugin/plugin.json must start with the exact root package.json version plus +codex.. The desktop package must use the same product version.
  • App is unreachable: inspect CODEX_SLIDES_URL and CODEX_SLIDES_LOG. The local MCP launcher may need to prepare dependencies or a standalone build.
  • Installed skill or tool inventory looks stale: reinstall/upgrade the plugin and start a new Codex task so the versioned plugin cache is refreshed.

Durable runs

  • Another run is active: inspect it with get_project_run. Wait, cancel it explicitly, or allow a Deck Agent request to remain in the visible queue.
  • Wait timed out: the run was not cancelled. Continue with wait_project_run or reopen its browserHandoff.
  • Run id is missing after completion: this indicates an old runtime without terminal runHistory; refresh the plugin/runtime before retrying the task.
  • Run is stopping: do not start a conflicting render. Poll until it becomes cancelled, then continue.
Show full SKILL.md (173 more words)Show less

Browser handoff and project resume

  • Use the exact returned browserHandoff.url; do not reconstruct a project URL.
  • Keep all focus parameters: slide, panel, version, mode, checkpoint, conversation, and run.
  • A clarify/research project may route through /?resume=<id>. The continuation query must survive that redirect.
  • Presenter mode needs a user gesture for its second window. A presenter deep link opens the Play menu at the correct slide instead of bypassing popup protection.

Rendering and project state

  • A partially rendered or paused deck is resumable. Read the project and start a durable render run for the existing project.
  • If Codex state and Browser state differ, read /runs/get_project as the canonical snapshot, then reload the same Browser handoff.
  • Do not report success for slides whose status is error or whose persisted image cannot be loaded.

Design Files and export

  • Resolve Design Files through list_design_files; never guess an absolute path.
  • Keep project files distinct from staged materials.
  • Export the current or explicitly selected immutable version only after visual verification. Speaker notes are off-canvas but must remain present in PPTX.

© nexu-io, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in skills/codex-slides-known-errors of nexu-io/codex-slides.

  • SKILL.md
  • agents/openai.yaml

Open the folder on GitHubat commit dbc2a59

Compare with similar skills

Codex Slides Known Errors next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Codex Slides Known Errors compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Codex Slides Known Errors this skillnexu-io/codex-slides924—~713Automated safety check: PassMIT
Creating Slidev Presentationsmcpc-tech/mcpc103—~4.6kAutomated safety check: PassMIT
Slidev CLI Skilldskilld-dev/vue-ecosystem-skills181—~1.1kAutomated safety check: PassMIT
Image To Editable Pptningzimu/image-to-editable-ppt-skill2.8k—~4.3kAutomated safety check: PassMIT
Slidesfcakyon/claude-codex-settings1.2k1 repos~1.1kAutomated safety check: PassMIT
Ppt Image FirstNyxTides/ppt-image-first1.2k—~1.6kAutomated safety check: PassApache-2.0

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Questions about Codex Slides Known Errors

What does Codex Slides Known Errors do?

Diagnose and recover from Codex Slides plugin, MCP, Browser handoff, local runtime, durable run, project resume, rendering, Design Files, export, and version-contract failures. Codex Slides Known Errors is an agent skill from nexu-io/codex-slides. Diagnose and recover from Codex Slides plugin, MCP, Browser handoff, local runtime, durable run, project resume, rendering, Design Files, export, and version-contract failures.

When should I use Codex Slides Known Errors?

Codex Slides Known Errors fits situations like: A project appears stale; Codex and the Browser disagree.

How do I install Codex Slides Known Errors in Claude Code?

Run `npx skills add nexu-io/codex-slides --skill codex-slides-known-errors -a claude-code`. Or copy the skill folder (skills/codex-slides-known-errors in nexu-io/codex-slides) into .claude/skills/codex-slides-known-errors in your project. Claude Code loads it when a task matches its description.

How do I install Codex Slides Known Errors in Codex?

Run `npx skills add nexu-io/codex-slides --skill codex-slides-known-errors -a codex`. Or copy the skill folder (skills/codex-slides-known-errors in nexu-io/codex-slides) into .agents/skills/codex-slides-known-errors in your project. Codex loads it when a task matches its description.

Can I use Codex Slides Known Errors in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nexu-io/codex-slides --skill codex-slides-known-errors -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codex-slides-known-errors, .gemini/skills/codex-slides-known-errors, .github/skills/codex-slides-known-errors and .opencode/skills/codex-slides-known-errors in your project.

What does Codex Slides Known Errors need to run?

SKILL.md names no scripts, command-line tools or credentials: Codex Slides Known Errors is instructions for the agent only.

Does Codex Slides Known Errors access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Codex Slides Known Errors safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Codex Slides Known Errors use?

Codex Slides Known Errors is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Codex Slides Known Errors use?

About 713 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Codex Slides Known Errors?

Skills that share tags, products or a category with Codex Slides Known Errors: Creating Slidev Presentations (mcpc-tech/mcpc, 103 stars), Slidev CLI Skilld (skilld-dev/vue-ecosystem-skills, 181 stars), Image To Editable Ppt (ningzimu/image-to-editable-ppt-skill, 2.8k stars) and Slides (fcakyon/claude-codex-settings, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Codex Slides Known Errors?

nexu-io (a GitHub organization) maintains it in nexu-io/codex-slides, which has 924 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on July 21, 2026.

Source: nexu-io/codex-slides on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.