Subtext
Lets coding agents open real user session recordings from Fullstory and find the cause of bugs.
What Subtext can do in ChatGPT
Let agents read real user sessions and find bugs.
Open Real Sessions
Open a recorded production session from a Subtext link.
Jump To The Moment
Go straight to the point where the problem happened.
Console And Network
Read the logs and requests around the moment of failure.
Compare Page State
Diff the page structure and screenshots between two moments.
Privacy Controls
Mask or exclude sensitive fields and scan for sensitive data.
You stay in control
You approve access, and you can disconnect Subtext at any time.
Apps 1
What Subtext does in ChatGPT
The Subtext plugin gives AI agents access to recorded user sessions from Fullstory. Instead of a person watching a replay, the agent opens the session itself, jumps to the moment that matters and inspects what the user saw, so it can explain what went wrong and why.
You can hand it a Subtext link from a bug ticket, a support thread or a pull request. The agent looks at screenshots, the accessibility tree, changes in the page structure, and the console and network activity around that moment. It then reports the finding or prepares a fix for you to review.
Subtext also includes tools for privacy, so agents can mask or leave out sensitive fields and scan for sensitive data. The listing says it works with Codex and other agents that support MCP, has a free tier and charges by usage beyond that.
Built-in skills
The listing says Subtext comes with 6 skills. Skills are ready-made instructions ChatGPT can use for a specific job.
- Subtext privacy
- Subtext review
- Subtext session
- Subtext shared
- Subtext telemetry
- Subtext using subtext
Who it is for
- Developers fixing production bugs
- Product teams reviewing user sessions
- Support teams passing bug reports to engineers
How to add Subtext to ChatGPT
- Open the Subtext listing in ChatGPT ↗.
- Click Install plugin.
- Sign in to your Subtext account when asked and approve the access it requests.
- Start a chat and ask for what you need, mentioning Subtext if ChatGPT does not pick it up.
- To stop, disconnect Subtext under apps in your ChatGPT settings.
Questions about Subtext
What is the Subtext ChatGPT plugin?
The Subtext plugin gives AI agents access to recorded user sessions from Fullstory. Instead of a person watching a replay, the agent opens the session itself, jumps to the moment that matters and inspects what the user saw, so it can explain what went wrong and why. It is listed in ChatGPT's plugin marketplace under Data & Analytics.
What can I ask Subtext to do in ChatGPT?
For example: "Review this user session and tell me what happened", "Find the root cause of the checkout bug in this Subtext link", "Look at recent sessions and suggest UX improvements for signup". It also comes with built-in skills such as Subtext privacy, Subtext review and Subtext session.
Who makes the Subtext plugin for ChatGPT?
The ChatGPT listing names Fullstory as the developer. The version listed on 8 October 2026 was 1.0.0.
How do I add Subtext to ChatGPT?
Open the Subtext listing in ChatGPT, click Install plugin, sign in to your Subtext account and approve the access it asks for. Then ask for what you need in a chat, mentioning Subtext if ChatGPT does not pick it up.
Can Subtext change things in my account, or only read?
It reads recorded sessions in your Fullstory Subtext account, including screenshots, page state, console and network activity. It includes tools to mask or exclude sensitive fields.
Who is the Subtext plugin for?
Developers fixing production bugs, product teams reviewing user sessions and support teams passing bug reports to engineers.
Does a person still need to watch the replay?
No. The agent opens the session, jumps to the right moment and inspects it directly, then gives you its finding to review.
Which agents can use Subtext?
The listing names Codex and says it works with any agent that supports MCP.
How is Subtext priced?
The listing mentions self-serve signup, a free tier and usage-based pricing.
Does Subtext see my ChatGPT chats?
When Subtext is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Subtext. What Subtext does with that data falls under its own terms and privacy policy. ChatGPT keeps your training-data settings, and you can disconnect at any time.
How do I disconnect Subtext from ChatGPT?
Open your ChatGPT settings, go to apps, and disconnect Subtext. You can reconnect later from the listing.
What are alternatives to Subtext in ChatGPT?
Similar plugins in the ChatGPT marketplace include Databricks Genie, Epinium and PostHog. Each has its own page in this directory.
Privacy and your data
When Subtext is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Subtext. What Subtext then does with that data falls under its own terms and privacy policy, not only OpenAI's. ChatGPT keeps your training-data settings for data that comes from connected apps, and you can disconnect at any time.
Subtext privacy policy ↗Subtext terms ↗OpenAI: apps in ChatGPT ↗