subtext — Claude Code plugin: session review and privacy
The plugin feeds recorded app sessions to your agent, so it can trace what a real user did and where things broke.
/plugin marketplace add anthropics/claude-plugins-community
/plugin install subtext@claude-communityWhat subtext does
Subtext records sessions from real users and hands them to your agent through the subtext MCP server at https://api.fullstory.com/mcp/subtext. It is HTTP only, so no local process runs. The agent walks a recording: which path the user took, what the console showed, which requests went out, and where the flow failed. That covers debugging user-reported issues and confirming a fix landed in the live UI.
The plugin bundles several skills. subtext-search finds sessions by what happened inside them, subtext-review produces structured summaries, subtext-session documents the review-* tool catalog, and subtext-privacy handles PII detection plus element-block, URL and network capture rules. Two more skills, sightmap-authoring and sightmap-browser, build and drive a .sightmap/ corpus, with subtext-sightmap bridging that corpus into session review. Every tool is read-only analysis except privacy-create, privacy-promote, privacy-delete, privacy-url-create and privacy-network-create, which change your org's privacy rules.
You need a free Subtext account. Sessions are stored by the hosted service and your agent reads them from there. The app also needs the Fullstory capture snippet for your org, otherwise there is nothing to record. The quick route is the wizard at npx @subtextdev/subtext-wizard: it logs you in, fetches the snippet, asks about your analytics tools, then hands the install to your coding agent.
What it helps with
- debug a user-reported issue from a recorded session
- confirm a UI fix shows up in the live app
- find sessions by what happened inside them
- set element-block and URL capture rules for PII
- bridge a
.sightmap/corpus into session review
Example prompts for the agent
- Find sessions where the user got stuck at checkout
- Review the latest recording and show me where it broke
- Check the privacy rules and stop capturing those fields
How to install subtext
Plugin marketplace
/plugin marketplace add anthropics/claude-plugins-community/plugin install subtext@claude-communityStep by step, with commands for each platform: Claude Code plugins: marketplaces, installing, and building your own
Questions about subtext
How do I install subtext in Claude Code?
Add the marketplace with /plugin marketplace add anthropics/claude-plugins-community, then install the plugin: /plugin install subtext@claude-community.
What does subtext do?
It gives your agent recorded app sessions to walk through — user actions, console errors, network activity — and lets it manage capture privacy rules.
What do I need before it works?
A free Subtext account and the Fullstory capture snippet in your app. The MCP server is HTTP only, so no local process is required.
