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Rank #4 of 5 in Agent Skills & Extensions

6.6k12.5k/yr +1.2k

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Install

cli$skill-installer gh-address-comments
npmnpx skills add openai/plugins

Compare head-to-head

Alternatives to Codex Plugins

Showcase

Codex Plugins homepage screenshot
homepage · captured Sep 2026 · view live ↗
Codex Plugins docs screenshot
docs · captured Sep 2026 · view live ↗

OpenAI ships more than one product — each judged line competes in its own arena on the same stories as everyone else.

LineArenaRankPA Score
ChatGPTAI Assistants#1/938/100
CodexAI Coding Agents#6/1333/100
Agents SDKAgent Frameworks & SDKs#2/937/100
Pluginsthis pageAgent Skills & Extensions#4/519/100

Not yet judged (6 — no arena where they compete): ChatGPT Work · Image generation (GPT-Image-2.5) · Codex Security · ChatKit · Agents API · API Platform

Try itExperimental

See what an agent can do with Codex Plugins before you ever sign up. Pick a story: recorded sessions replay real probe-harness transcripts; commands tagged live-capable can re-run against the real endpoint from our edge, right now (▶ run live — the exact same request, live and recorded lines always labeled); sandboxed self-drive sessions are designed and gated (docs/TRY-IT.md).

$curl -s https://raw.githubusercontent.com/openai/plugins/HEAD/.agents/plugins/marketplace.json | head -40recorded session — replayed, not live
recorded 2026-09-06 · exit 0 · captured verbatim by our probe harness, secrets redacted · pure-HTTP probe — ▶ run live re-runs it from our edge

Verified integrations

Connections to other tracked products — hover a chip for the verbatim evidence quote behind it.

By theme — the product's score on each story themeBy theme

Agent workflows — stories about agent workflows in this arenaAgent workflowsevidence →

Stories about agent workflows in this arena

50.0/100

Agenticness — how well agents can access and operate the productAgenticnessevidence →

How well agents can access and operate the product

29.4/100

Automation depth — how much of the product can run unattendedAutomation depthevidence →

How much of the product can run unattended

6.7/100

Cross agent portability — stories about cross agent portability in this arenaCross agent portabilityevidence →

Stories about cross agent portability in this arena

14.4/100

Discovery distribution — stories about discovery distribution in this arenaDiscovery distributionevidence →

Stories about discovery distribution in this arena

63.7/100

Docs onboarding — stories about docs onboarding in this arenaDocs onboardingevidence →

Stories about docs onboarding in this arena

38.4/100

Install experience — stories about install experience in this arenaInstall experienceevidence →

Stories about install experience in this arena

45.0/100

Openness — open source, data portability, and self-hosting storiesOpennessevidence →

Open source, data portability, and self-hosting stories

3.6/100

Privacy posture — data-handling and privacy storiesPrivacy postureevidence →

Data-handling and privacy stories

0.0/100

Safety review — stories about safety review in this arenaSafety reviewevidence →

Stories about safety review in this arena

27.6/100

Skill authoring — stories about skill authoring in this arenaSkill authoringevidence →

Stories about skill authoring in this arena

67.4/100

Testing quality — stories about testing quality in this arenaTesting qualityevidence →

Stories about testing quality in this arena

0.0/100

Versioning updates — stories about versioning updates in this arenaVersioning updatesevidence →

Stories about versioning updates in this arena

0.0/100

Story verdicts — every judged story with its evidenceStory verdicts

?

Sorted by importance (agentic first) (high → low) · 52/52 stories · click a row’s chevron for the rationale and evidence

Plug MCP servers into this product so it can use their tools G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3full8/10C

Delegate tasks to a built-in AI assistant inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness3full7/10C

Connect an agent via an official MCP server G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3n/a0/10

Drive the product through a documented public API G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3none0/10

Use an official CLI G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full8/10T

Operate the product with natural-language commands G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full7/10X

Get AI-generated insights and suggestions from my data inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial6/10C

Build against official SDKs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial5/10T

Point an agent at llms.txt or agent-oriented docs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial5/10T

Download a machine-readable API spec (OpenAPI or equivalent) G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Explore an interactive API reference with runnable examples G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Issue scoped/least-privilege API credentials for an agent G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Rely on versioned APIs with a documented deprecation policy G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Run the product headlessly / in CI for automation G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Set up automations that run autonomously in the background G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Subscribe to events via webhooks G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2n/auntestednone yet

Test against a sandbox environment without touching production data G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness1noneuntestednone yet

Author a new skill from a documented template — a SKILL.md with name and description frontmatter — without reverse-engineering existing skills C

Authoring

developerSkill authoring — stories about skill authoring in this arenaSkill authoring3full8/10X

Install a skill collection with one documented command — a package-manager one-liner, CLI, or in-agent marketplace command — and it is active in my next session C

Install

developerInstall experience — stories about install experience in this arenaInstall experience3full7/10C

Installed skills trigger automatically from task context, with descriptions engineered so the agent activates the right skill at the right moment C

Triggering

developerDiscovery distribution — stories about discovery distribution in this arenaDiscovery distribution3partial7/10X

A quickstart takes me from nothing to a working installed skill in under five minutes C

Onboarding

developerDocs onboarding — stories about docs onboarding in this arenaDocs onboarding3partial6/10C

My coding agent can install a skill by itself — a non-interactive, promptless install path an agent can run headlessly end to end C

Agent ops

ai-native userAgent workflows — stories about agent workflows in this arenaAgent workflows3partial5/10C

Review exactly what instructions and scripts a skill will add — list contents before installing and read every file afterward C

Review

engineering-leadSafety review — stories about safety review in this arenaSafety review3partial5/10C

Define rules that trigger actions automatically on events G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth3partial3/10C

Install the same collection into multiple different coding agents — Claude Code, Codex, Cursor, and others — with per-harness instructions C

Portability

developerCross agent portability — stories about cross agent portability in this arenaCross agent portability3none0/10

There is a documented update path — marketplace auto-updates or an explicit update command — so I get fixes without reinstalling from scratch C

Updates

developerVersioning updates — stories about versioning updates in this arenaVersioning updates3none0/10

Export all of my data in open formats and leave G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3noneuntestednone yet

Prevent my data from being used to train AI models G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture3noneuntestednone yet

Self-host the core product G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3noneuntestednone yet

Browse or search a catalog of available skills — a registry, leaderboard, or marketplace listing — before installing anything C

Discovery

developerDiscovery distribution — stories about discovery distribution in this arenaDiscovery distribution2full8/10C

Distribute a standard skill set to my whole team — via a marketplace, a shared repo, or files committed to the project C

Distribution

engineering-leadDiscovery distribution — stories about discovery distribution in this arenaDiscovery distribution2full8/10X

My agent can author and package a new skill end to end by following the project's own spec, template, or meta-skill C

Agent ops

ai-native userAgent workflows — stories about agent workflows in this arenaAgent workflows2full8/10X

The collection ships a meta-skill or tool that guides my agent through writing, improving, and packaging new skills C

Authoring

developerSkill authoring — stories about skill authoring in this arenaSkill authoring2full8/10X

Every skill documents what it does and when it activates, so I can predict my agent's new behavior before it surprises me C

Onboarding

developerDocs onboarding — stories about docs onboarding in this arenaDocs onboarding2partial7/10X

Install only the specific skills I want from a collection instead of taking the whole bundle C

Install

developerInstall experience — stories about install experience in this arenaInstall experience2partial6/10C

Skills are plain markdown files and folders I can read, copy, and carry to another harness — not a proprietary binary format C

Portability

developerCross agent portability — stories about cross agent portability in this arenaCross agent portability2partial6/10C

Skills follow the open Agent Skills specification so the same skill folder is valid beyond this one vendor's tooling C

Spec

developerSkill authoring — stories about skill authoring in this arenaSkill authoring2partial6/10X

Choose install scope — project-local files committed with my repo, or user-global across all projects C

Install

developerInstall experience — stories about install experience in this arenaInstall experience2partial5/10C

The project documents its security posture — what skills can execute, the trust model for third-party skills, and any telemetry or data collection C

Trust

engineering-leadSafety review — stories about safety review in this arenaSafety review2partial4/10C

Read the product's source under an open license G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2partial3/10C

Control data retention and deletion G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2none0/10

Do everything through the API that I can do in the UI G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2none0/10

The collection maintains tests or evals for its skills so changes are verified against regressions rather than shipped on vibes C

Testing

developerTesting quality — stories about testing quality in this arenaTesting quality2none0/10

Choose where my data is stored (region/residency) G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2n/auntestednone yet

Opt out of telemetry and usage tracking G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Perform bulk operations across many items at once G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2noneuntestednone yet

Schedule recurring jobs or workflows G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2noneuntestednone yet

The collection is actively maintained — recent releases, triaged issues, and accepted community contributions C

Maintenance

developerTesting quality — stories about testing quality in this arenaTesting quality2noneuntestednone yet

List what is installed and remove skills cleanly, without orphaned files or lingering instructions C

Lifecycle

developerInstall experience — stories about install experience in this arenaInstall experience1partial3/10C

Control when skill changes reach my team — pinned versions or a lockfile rather than silent behind-the-back updates C

Pinning

engineering-leadVersioning updates — stories about versioning updates in this arenaVersioning updates1none0/10

Version, review, and roll back my automations G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth1none0/10

Releases ship with notes or a changelog so I can see what changed in the skills before I take an update C

Updates

developerVersioning updates — stories about versioning updates in this arenaVersioning updates1noneuntestednone yet

Opportunities — the stories that would move this product's scores, from its own judged verdictsOpportunitiestop 8 of 39 stories with headroom

What would move Codex Plugins’s scores — derived from its own judged verdicts, biggest headroom first. Each line quotes what the judge found missing; shipping it (or evidencing it publicly) is the fix.

  1. Agenticness — how well agents can access and operate the productDrive the product through a documented public API

    nonemoves agent-readyimpact 45

    Evidence shows Codex Plugins uses MCP to let plugins expose capabilities *to* Codex/ChatGPT, and offers CLI commands (`codex plugin marketplace add`, `/plugins`) for local plugin management, but there is no documented public REST/GraphQL API for programmatically driving the Codex Plugins product itself — the direct OpenAPI probe returned 404 on all candidate spec paths, confirming no discoverable public API surface.

  2. Versioning updates — stories about versioning updates in this arenaThere is a documented update path — marketplace auto-updates or an explicit update command — so I get fixes without reinstalling from scratch

    nonemoves PA Scoreimpact 30

    Evidence covers plugin installation (`/plugins`, `codex plugin marketplace add`) and creation/submission workflows, but nowhere documents an explicit update/upgrade command or auto-update behavior for already-installed plugins to receive fixes without reinstalling.

  3. Cross agent portability — stories about cross agent portability in this arenaInstall the same collection into multiple different coding agents — Claude Code, Codex, Cursor, and others — with per-harness instructions

    nonemoves PA Scoreimpact 30

    All evidence describes installing plugins/skills within OpenAI's own ecosystem (Codex CLI, ChatGPT desktop/Chat/Work) — there is no evidence of a single collection being installed into Claude Code, Cursor, or other third-party coding agents.

  4. Openness — open source, data portability, and self-hosting storiesExport all of my data in open formats and leave

    nonemoves PA Scoreimpact 30

    No evidence of any data export feature, open-format export, or account/data portability mechanism for Codex Plugins; the documentation focuses on plugin/skill installation and creation, not user data export or exit.

  5. Openness — open source, data portability, and self-hosting storiesSelf-host the core product

    nonemoves PA Scoreimpact 30

    The axis applies to this product kind (peer products hold positive or none verdicts on this story), so lack of evidence for an applicable capability is "none", never "na".

  6. Privacy posture — data-handling and privacy storiesPrevent my data from being used to train AI models

    nonemoves PA Scoreimpact 30

    The evidence pack covers plugin/skill installation, marketplace, and OAuth sign-in scope, but contains no mention of data-training opt-out or AI-training data controls for Codex Plugins.

  7. Agenticness — how well agents can access and operate the productSet up automations that run autonomously in the background

    nonemoves Built-in AIimpact 30

    Missing: any scheduler/cron/trigger mechanism, background/always-on execution mode, or evidence of unattended autonomous runs.

  8. Agenticness — how well agents can access and operate the productRun the product headlessly / in CI for automation

    nonemoves agent-readyimpact 30

    Missing: any mention of a non-interactive/headless invocation mode, CI examples, or automation-friendly APIs for plugins/skills.

Showing the top 8 of 39 — every none/partial verdict in the story verdicts table is headroom.

Think a verdict is wrong? Every verdicts-table row has a Flag link — see the methodology.

Coverage map — which docs area, API section, or community source covers which judged storiesCoverage map7 surfaces · 26 covered stories

Where the cited evidence behind each covered verdict came from — the same citations the verdicts table shows, no extra judging.

docs24 stories

Plugins docs16 stories

Probe proofs — replayable recordings from the probe harnessProbe proofs

Replayable recordings from our probe harness — see the Prove-It protocol to submit one.

$curl -s https://raw.githubusercontent.com/openai/plugins/HEAD/.agents/plugins/marketplace.json | head -40reproduced
$ curl -s https://raw.githubusercontent.com/openai/plugins/HEAD/.agents/plugins/marketplace.json | head -40
{
  "name": "openai-curated",
  "interface": {
    "displayName": "Codex official"
  },
  "plugins": [
    {
      "name": "linear",
      "source": {
        "source": "local",
        "path": "./plugins/linear"
      },
      "policy": {
        "installation": "AVAILABLE",
        "authentication": "ON_INSTALL"
      },
      "category": "Productivity"
    },
    {
      "name": "atlassian-rovo",
      "source": {
        "source": "local",
        "path": "./plugins/atlassian-rovo"
      },
      "policy": {
        "installation": "AVAILABLE",
        "authentication": "ON_INSTALL"
      },
      "category": "Productivity"
    },
    {
      "name": "google-calendar",
      "source": {
        "source": "local",
        "path": "./plugins/google-calendar"
      },
      "policy": {
        "installation": "AVAILABLE",
        "authentication": "ON_INSTALL"
      },
$npx -y skills add openai/plugins --skill plugin-creator -a codex -y --copy # in a scratch dir, then print installed SKILL.md frontmatterreproduced
$ npx -y skills add openai/plugins --skill plugin-creator -a codex -y --copy  # in a scratch dir, then print installed SKILL.md frontmatter
\
███████╗██╗  ██╗██╗██╗     ██╗     ███████╗
██╔════╝██║ ██╔╝██║██║     ██║     ██╔════╝
███████╗█████╔╝ ██║██║     ██║     ███████╗
╚════██║██╔═██╗ ██║██║     ██║     ╚════██║
███████║██║  ██╗██║███████╗███████╗███████║
╚══════╝╚═╝  ╚═╝╚═╝╚══════╝╚══════╝╚══════╝

┌   skills 
│
◇  Source: https://github.com/openai/plugins.git
│

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.◇  Repository cloned
│
◇  Found 1 skill
│
●  Selected 1 skill: plugin-creator

│
◇  Installation Summary ─╮
│                        │
│                        │
│                        │
│  [                     │
│  3                     │
│  6                     │
│  m                     │
│  .                     │
│  /                     │
│  .                     │
│  a                     │
│  g                     │
│  e                     │
│  n                     │
│  t                     │
│  s                     │
│  /                     │
│  s                     │
│  k                     │
│  i                     │
│  l                     │
│  l                     │
│  s                     │
│  /                     │
│  p                     │
│  l                     │
│  u                     │
│  g                     │
│  i                     │
│  n                     │
│  -                     │
│  c                     │
│  r                     │
│  e                     │
│  a                     │
│  t                     │
│  o                     │
│  r                     │
│                        │
│  [                     │
│  3                     │
│  9m                    │
│                        │
│                        │
│                        │
│                        │
│  [                     │
│  2                     │
│  m                     │
│  c                     │
│  o                     │
│  p                     │
│  y                     │
│                        │
│  →                     │
│                        │
│  [                     │
│  2                     │
│  2m                    │
│                        │
│  C                     │
│  o                     │
│  d                     │
│  e                     │
│  x                     │
│                        │
├────────────────────────╯
│
◇  Security Risk Assessments ─╮
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│  [                          │
│  2                          │
│  m                          │
│  G                          │
│  e                          │
│  n                          │
│                             │
│  [                          │
│  2                          │
│  2m                         │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│  [                          │
│  2                          │
│  m                          │
│  S                          │
│  o                          │
│  c                          │
│  k                          │
│  e                          │
│  t                          │
│                             │
│  [                          │
│  2                          │
│  2m                         │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│                             │
│  [                          │
│  2                          │
│  m                          │
│  S                          │
│  n                          │
│  y                          │
│  k                          │
│                             │
│  [                          │
│  2                          │
│  2m                         │
│                             │
│                             │
│  [                          │
│  3                          │
│  6                          │
│  m                          │
│  p                          │
│  l                          │
│  u                          │
│  g                          │
│  i                          │
│  n                          │
│  -                          │
│  c                          │
│  r                          │
│  e                          │
│  a                          │
│  t                          │
│  o                          │
│  r                          │
│                             │
│  [                          │
│  3                          │
│  9m                         │
│                             │
│                             │
│                             │
│  [                          │
│  3                          │
│  2                          │
│  m                          │
│  S                          │
│  a                          │
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├─────────────────────────────╯
│
◇  Installation complete

│
◇  Installed 1 skill ─╮
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├─────────────────────╯

│
└  Done!  Review skills before use; they run with full agent permissions.

\--- installed SKILL.md frontmatter ---
---
name: plugin-creator
description: Create and scaffold plugin directories for Codex with a required `.codex-plugin/plugin.json`, optional plugin folders/files, and baseline placeholders you can edit before publishing or testing. Use when Codex needs to create a new personal plugin, add optional plugin structure, or generate or update personal or repo-root `.agents/plugins/marketplace.json` entries for plugin ordering and availability metadata.

Claims vs evidence — vendor claims reconciled against independent verdictsClaims vs evidence

4 of 11 testable claims verified · 0 contradictedintegrity 36/100

24 distinct capability claims found in Codex Plugins’s own claimed-docs/GitHub materials, reconciled against our judge’s independent verdicts.

4

Verified

7

Unverified

0

Contradicted

15

Undersold

Verified (5)
Unverified (7)
Undersold (15)
Claims outside our story set (12)

Real capability claims found in Codex Plugins’s own materials, but no story in this arena’s taxonomy covers them yet — that’s feedback on the taxonomy, not a mark against the product.

  • Security plugin can scan authorized code and confirm plausible vulnerability findings

    source ↗
  • Gmail plugin lets Codex work with Gmail

    source ↗
  • Google Drive plugin works across Drive, Docs, Sheets, and Slides

    source ↗
  • Slack plugin can summarize channels or draft replies

    source ↗
  • A plugin can read/search iMessage, SMS, RCS chats and send messages on the user's behalf

    source ↗
  • Figma plugin provides use_figma, Code to Canvas, Code Connect, and design system rules

    source ↗
  • iOS app-building plugin supports SwiftUI implementation, refactors, performance, and debugging

    source ↗
  • Web app-building plugin supports deployment, UI, payments, and database workflows

    source ↗
  • Notion plugin supports planning, research, meetings, and knowledge capture

    source ↗
  • 'Sign in with ChatGPT' is rolling out in beta for supported plugins and partner sites like Airtable, GitLab, HubSpot, Notion, Supabase, and Vercel

    source ↗
  • Expo plugin supports Expo/React Native apps, SDK upgrades, EAS workflows, and Codex Run actions

    source ↗
  • '/skills' command or typing '$' lets you mention/invoke a skill directly in Codex CLI or IDE extension

    source ↗
Suggest a story for these →

Business model

open-sourcesubscription-per-seat

Public plugin/skill catalog and marketplace for Codex with per-skill licenses; the plugins are free but running them requires Codex, which needs a paid ChatGPT plan or API key.

pricing ↗

Score trend

How this product’s scores have moved as evidence and verdicts are re-derived — a point per change, not per day.

PA Score13 (Sep 7 '26)19 (Sep 16 '26)
Agent-ready25 (Sep 7 '26)33 (Sep 16 '26)

Try Experimental

Run it in the microterminal →

Recorded agent sessions — and a live MCP handshake where the vendor ships one.

Flag

⚑ Flag a verdict

Think a verdict is wrong? Opens a prefilled GitHub issue — or use the ⚑ next to any verdict above.

Badge

Embed this product's score badge →

Hotlinked SVG — always shows the live current score.

For agents

Data

Agent surface uptime llms.txt 100% (30d, checked every 6h since Sep 8 '26)