Run a diagnostics check with Tells

Drive one profile to tells.blowhorn.ai under each operating mode, save the reports on this computer, and compare what each mode leaks.

The desktop app's Debug area (the account menu's Debug item) is open to anyone who can reach the console: run tells checks, read saved packages, read this computer's logs, and see the doctor's checks. The same runs are available from the command line. blowhorn auth status --json still lists the permission keys your session holds in the Blowhorn parent organization as permission_keys, but they no longer decide who sees the area.

Run one mode

terminal
blowhorn diagnostics tells-run --profile personal --json

This drives the profile to the live tells.blowhorn.ai, waits for its inspection to finish, and saves the report it renders as one package on this computer. --mode chooses how Blowhorn reaches Google Chrome:

  • extension-background -- the default: the extension driver in background mode, the way Blowhorn normally runs.
  • extension-classic -- the extension driver in classic mode.
  • cdp -- attach to the Chrome you already have open.
  • persistent -- Blowhorn launches its own Chrome.

--anonymous uses a fresh throwaway profile labelled anonymous instead of a named profile. Only persistent runs: Blowhorn launches its own Chrome on a new temporary folder, removed when the run ends, and reads no Chrome mapping. The extension modes are refused for it by name: a fresh profile has no Blowhorn extension installed. cdp is refused too: it attaches to the Chrome you already have open, which is not a fresh profile. A run that pretended otherwise would measure nothing.

Run every mode

terminal
blowhorn diagnostics tells-sweep --profile personal --json

A sweep runs each mode in order and saves one package per mode plus a sweep manifest naming them. A mode that fails is recorded in its own package and in the manifest, and the sweep goes on: the comparison between modes is the finding, so a partial sweep is still evidence.

Compare a competitor tool's report

Run the competitor tool against the live tells page on your own computer, export the page's raw report JSON, and import it:

terminal
blowhorn diagnostics import-tells --file browser-use-report.json --tool browser-use --json

The report is stored verbatim, wrapped in the same tells-run envelope a run Blowhorn drove itself writes, so diagnostics reports lists it and diagnostics report reads it back beside Blowhorn's own runs. The package says what it is: its mode is external, its profile column names the tool (there is no Blowhorn profile behind it), and it is never a member of a sweep. Nothing is uploaded, and no audit event is recorded for an import. A file that is not a Tells report is refused and nothing is written. The benchmark runs themselves -- same Mac, same Chrome version, terms checked per tool -- are still Mac work; this command is only the import half, for a report someone already captured.

Read what you saved

terminal
blowhorn diagnostics reports --json
blowhorn diagnostics report --id <id> --json

Packages live on this computer only, under data/cache/diagnostics/tells (or BLOWHORN_DIAGNOSTICS_DIR when set). Nothing is uploaded. Each package names the Blowhorn and Chrome versions, the mode and its driver, the profile and whether it was anonymous, and the report exactly as the page produced it -- or why the run failed.

Read the logs

In the desktop app, the Debug area's logs section lists the run logs and the service logs on this computer, newest first. Pick one to read its tail, and refresh to re-read it. Nothing here is uploaded.

The audit trail

Each run, sweep and opening of the Debug area is recorded to Blowhorn as an event (category blowhorn, actions diagnostics_run and diagnostics_open) when you are signed in, so who ran what, when, is on record. Posting is best-effort: signed out or offline never fails a run.

terminal
blowhorn diagnostics opened --json

The desktop app runs this when the Debug area opens; it answers {"ok": true, "posted": true} when the event reached Blowhorn.

Last modified October 31, 2026

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