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Plugin extensions

Plugin extensions let developers create experiences within ChatGPT, including a sidebar home and interactive panels alongside conversations. Developers can also create viewers for file types their products support, and the extensions are available to all plans.

What it does

Developers can use it to build MCP servers and apps with sidebar entrypoints, custom file viewers, composer mentions, and extended forms.

Availability
TypeScript package @openai/mcp-extensions and Python package openai-mcp-extensions
Pricing model
Available to all plans
Deployment
Hosted
Privacy
null
Licence
Apache License 2.0
Capability
agents
Modality
text
Access
SDKopen weights
Deployment
hosted
Pricing
unknown
Target user
developer

Evidence

10 claims
  • Plugin extensions are available to all plans. [1]
    Available to all plans.
    OpenAI. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • Developers can create their own experiences within ChatGPT. [1]
    We’re opening the platform we use to build ChatGPT features so developers can create their own experiences within ChatGPT.
    OpenAI. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • Plugin extensions let developers give a plugin a home in the sidebar. [1]
    Plugin extensions let you give your plugin a home in the sidebar and build interactive panels where people can work alongside the conversation.
    OpenAI. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • Developers can build interactive panels where people work alongside the conversation. [1]
    Plugin extensions let you give your plugin a home in the sidebar and build interactive panels where people can work alongside the conversation.
    OpenAI. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • Developers can create viewers for the file types their product supports. [1]
    You can also create viewers for the file types your product supports.
    OpenAI. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • The project provides a Python SDK package named openai-mcp-extensions for MCP servers. [2]
    - [Python](python/README.md#installation): `openai-mcp-extensions` for MCP servers.
    GitHub new repositories. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • File extension handlers can render custom file viewers for supported file types. [2]
    Render custom file viewers when users open a supported file type.
    GitHub new repositories. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • Composer mentions let users search plugin resources and add references to a message. [2]
    Let users search your plugin’s resources from the composer and add references to a message.
    GitHub new repositories. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • The project provides a TypeScript SDK package named @openai/mcp-extensions. [2]
  • Sidebar entrypoints allow users to access an app from the sidebar. [2]
    Allow users to access your app from the sidebar.
    GitHub new repositories. Quoted text is outside CC BY 4.0 and keeps its original rights.

Sources

2
1
OpenAIOwner-controlled
https://openai.com/index/devday-2026-recap Retrieved 2026-10-28 00:02 UTC
Verified
2
GitHub new repositoriesOwner-controlled
https://github.com/openai/mcp-extensions Retrieved 2026-10-28 00:02 UTC
Verified

Versions

40
VersionEffectiveChangeChanged fieldsState
402026-10-28 00:02 UTCmaterial changecapability, modality, access, pricing, availabilityCurrent
392026-10-28 00:02 UTCmaterial changecapability, pricing, deploymentCurrent
382026-10-26 01:12 UTCmaterial changecapability, modality, access, pricing, availability, pricing modelCurrent
372026-10-24 01:40 UTCmaterial changecapability, modality, access, pricing, availabilityCurrent
362026-10-23 01:22 UTCmaterial changecapability, modality, access, pricing, availability, pricing model, deploymentCurrent
352026-10-22 00:52 UTCmaterial changecapability, modality, access, availabilityCurrent
342026-10-22 00:52 UTCmaterial changecapability, access, pricing, availability, pricing model, deploymentCurrent
332026-10-21 00:08 UTCmaterial changecapability, modality, access, availabilityCurrent
322026-10-20 01:04 UTCmaterial changecapability, modality, access, availabilityCurrent
312026-10-20 01:04 UTCmaterial changecapability, access, pricing, availability, pricing model, deploymentCurrent
302026-10-19 02:03 UTCmaterial changecapability, modality, access, availability, deploymentCurrent
292026-10-18 02:53 UTCmaterial changecapability, modality, access, availabilityCurrent
282026-10-18 02:53 UTCmaterial changedeploymentCurrent
272026-10-17 03:52 UTCmaterial changecapability, modality, access, availabilityCurrent
262026-10-16 04:48 UTCmaterial changecapability, access, pricing, availabilityCurrent
252026-10-16 04:48 UTCmaterial changecapability, modality, access, pricing, availability, deploymentCurrent
242026-10-15 05:40 UTCmaterial changecapability, access, pricing, availability, pricing model, deploymentCurrent
232026-10-14 06:32 UTCmaterial changecapability, modality, access, availabilityCurrent
222026-10-14 06:32 UTCmaterial changecapability, accessCurrent
212026-10-13 07:24 UTCmaterial changecapability, modality, access, availabilityCurrent
202026-10-12 08:22 UTCmaterial changecapability, modality, access, availabilityCurrent
192026-10-12 08:22 UTCmaterial changepricing, pricing modelCurrent
182026-10-11 09:15 UTCmaterial changecapability, modality, access, availability, deploymentCurrent
172026-10-10 10:10 UTCmaterial changecapability, modality, access, availabilityCurrent
162026-10-10 10:10 UTCmaterial changecapability, access, deploymentCurrent
152026-10-09 11:03 UTCmaterial changecapability, modality, access, availabilityCurrent
142026-10-08 11:58 UTCmaterial changecapability, modality, access, pricing, availabilityCurrent
132026-10-08 11:58 UTCmaterial changecapability, pricingCurrent
122026-10-07 12:56 UTCmaterial changecapability, modality, access, pricing, availabilityCurrent
112026-10-06 13:55 UTCmaterial changecapability, modality, access, pricing, availabilityCurrent
102026-10-06 13:55 UTCmaterial changecapability, access, pricing, availability, deploymentCurrent
92026-10-05 14:52 UTCmaterial changecapability, modality, access, pricing, availability, pricing model, deployment, privacyCurrent
82026-10-04 15:47 UTCmaterial changecapability, modality, access, availabilityCurrent
72026-10-04 15:47 UTCmaterial changecapability, access, pricing, availability, pricing model, deploymentCurrent
62026-10-03 16:44 UTCmaterial changecapability, modality, access, availabilityCurrent
52026-10-02 17:40 UTCmaterial changecapability, modality, access, availabilityCurrent
42026-10-01 18:33 UTCmaterial changecapability, modality, access, availabilityCurrent
32026-09-30 19:27 UTCmaterial changecapability, modality, access, pricing, availabilityCurrent
22026-09-30 19:27 UTCmaterial changepricingCurrent
12026-09-29 20:20 UTCpublicationNoneCurrent

In briefs

1

Open in the catalog

Original catalog content is licensed under CC BY 4.0, attributed to wowsuchai. Source quotations and linked content keep their original rights.