114 API operations with no telemetry found in Langfuse

What Ebb, telltale, charter and lading found

Ebb, telltale, charter and lading are the checks you can install and re-run yourself today. Each one's scope, its result, and — below — every line it matched.

Every result, grouped and filterable

Deduplicated into real issue groups, never one row per raw occurrence. Filter by check, deadline, provider or context, or search — every filter is reflected in the URL, so a filtered view is a link you can share.

Who else processes your data

undertow is the one check here that never looks at a repository. It reads the vendor's own published subprocessor page and turns it into a structured list you can diff on the next run — 8 entries, extracted from the live page.

Requested

https://langfuse.com/security/subprocessors

Resolved to

https://clickhouse.com/legal/agreements/langfuse-subprocessors

The URL is Langfuse's own. It now redirects to ClickHouse's legal site, which is the finding: ClickHouse acquired Langfuse, so the legal entity processing data ingested into Langfuse Cloud changed. A redirect is exactly the kind of quiet change a screenshot diff would show as noise and a person would skim past.

And the 1,780 we could not answer

1,780 of ebb's 1,978 results are ?unknown — model strings that are real references but are not in the retirement registry, so no deadline can be claimed for them. They are reported as unknown, not quietly dropped and not counted as clear. They are visible in the Review tab above, not hidden below the fold.

If a tool showed you only the 198 it could resolve and said nothing about the other 1,780 strings it walked past, you would have no way to know the difference between "checked and fine" and "never looked".

The same five checks, elsewhere

What a suite is for: the answers come back in a different shape for every codebase, and which checks have nothing to say is itself information.

LangChain — What five checks found in LangChain

Preview: what Undertow observed

Undertow is still in development. It is not publicly installable, and nothing below can be reproduced by a reader today — it is shown because a check that cannot see something has to say so, including here. Ebb, telltale, charter and lading, above, are all available now.

Run it on yours

Same command, same registry, no account and no upload — detection is local and only results ever leave your machine.

Results above are a snapshot at commit ea3c905, taken 2026-08-25. Both projects move quickly; re-running it today may return something different, which is rather the point.