Status & metadata

`/_status`

Returns render-pool statistics and browser metadata as JSON:

{
  "pool_stats": { "active": 0, "idle": 1, "destroyed": 0, "invalidated": 0 },
  "render_pool_type": "runner",
  "metadata": { "browser": "…", "user_agent": "…", "protocol": "…" }
}

Field	Meaning
`pool_stats.active`	Browsers currently borrowed (rendering).
`pool_stats.idle`	Browsers idle in the pool.
`pool_stats.destroyed`	Browsers destroyed over the pool’s lifetime.
`pool_stats.invalidated`	Browsers invalidated by borrow-time validation.
`render_pool_type`	`runner` or `page`.
`metadata`	Browser/version info.

The JSON Schema for this object is available at /_status/schema.json.

Health-check note: /_status currently borrows a browser to read live version info, so under a saturated single-browser pool it can block up to the borrow timeout. For a pure liveness probe, prefer a lightweight check or size the pool accordingly. See Tuning.

`/_metadata`

Returns build/version information:

{ "versionInfo": { "version": "…", "…": "…" } }

Use /_metadata for a cheap liveness probe (it does not touch the browser pool).