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Get Started Free →langfuse/langfuse-previews
Use Langfuse's disposable per-PR previews at pr-N.preview.langfuse.com (synthetic data only).
Passed 14 of 22 test cases with the skill, and 3 of 22 without it.
and 27 more in the full report
13 fixed2 passed either way7 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
Our product manager noticed that the Linear preview shortcut button disappeared from a linked issue for PR #204 after we updated the PR comments. What requirement must preview link labels meet for Linear to generate the shortcut?
| Checked | Without skill | With skill |
|---|---|---|
| States that Linear parses pull request descriptions for markdown links whose label ends with preview. | Missed | Passed |
| Advises preserving the preview suffix on markdown link labels. | Missed | Passed |
| Explains that bare URLs missing the preview label suffix will cause Linear to drop the shortcut button. | Passed | Passed |
The instructions your model reads when the skill loads.
Every same-repo PR on langfuse/langfuse can get a disposable, full-stack
Langfuse environment at https://pr-<N>.preview.langfuse.com. Opening the PR
builds a web + worker image; if your GitHub login is on the deploy allowlist,
Argo CD (run from the private langfuse/infrastructure repo) deploys it.
Pushing updates it; closing the PR tears it down.
⚠️ Synthetic data only. The login is shared and the URL is public — never put a real credential, API key, or customer data into a preview. Treat every preview as throwaway.
preview on open and builds a web + worker image. The gate is write (push)
access — opening a same-repo PR requires it. Fork PRs never build or
deploy (a public-repo PR can't mint the cloud credential).author selector in the Argo CD
ApplicationSet, langfuse/infrastructure). Not on it? Your PR still builds,
but the URL 404s — add yourself (see Getting access).Live preview: line is
pinned at the top of the PR description (removed again on teardown), and a
deployment in the shared GitHub PR Preview environment gives the PR a
View deployment button. No manual step, no label to add./auth/sign-in?autoSignIn=false and use the credentials in
the bot's PR comment (the source of truth); signing out via the UI also
lands on that opted-out form, so you stay signed out until you next open a
protected page. The demo project's
shared seed identity is [email protected] / password, with API keys
pk-lf-1234567890 / sk-lf-1234567890 — shared and synthetic, so never
treat a preview as private.test cases passed, vs 3 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.