LangSmith launches Custom Apps: prompt-built custom UIs on your agent data
LangChain · x · 2026-10-03
- LangChain launched Custom Apps in LangSmith: build, publish, and run custom UIs on top of LangSmith data without handling hosting, auth, or permissions.
- Teams previously built custom frontends with coding agents and the LangSmith API but had to maintain them like any software.
- Workflow: describe the data and display via LangSmith Chat to generate an app, or start from templates with coding-agent guidance — focused on feedback, experiments, traces, and team-specific quality criteria.
- Aimed at the long tail beyond the default dashboards (latency/cost/errors, experiment regression comparisons).
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