# Sample a large site's index status sensibly

> Tier: recipe. Operating recipe: real tool sequence, core rules, known traps.

The sampling plan for large sites: sections, strata, quota budget, then bulk inspection on the sample.

**Intent.** Reliable index conclusions on a million-page site without a million inspections.

## When to use

- Sites too large for exhaustive inspection.
- Before big migration verdicts.

## When not to use

- Small sites: inspect directly, sampling adds error for nothing.

## Sources

Required: Search Console

## Preconditions

- The account is ticked in the dashboard, confirmed via list_accounts.

## Inputs

- `window`: Analysis window. Default: last 30 days.

## Procedure

1. Plan the sample across sections and templates. — tools: `gsc_plan_large_site_sampling`
2. Run the bulk inspection on the sample. — tools: `gsc_bulk_inspect_urls`

## Decision rules

- **When** A stratum's sample shows systemic failure → **conclude** Extrapolate to the stratum only, with the interval: not to the site.

## Evidence requirements

- Every figure carries its account, metric and window.
- Anything below a readable sample size is reported as unjudged, not as zero.

## Human approval boundary

- The readout changes nothing. Any change it motivates goes through Safe Writes: preview, human confirmation, then apply.

## Failure modes

- Convenience samples (recent pages, top pages) are biased by construction: strata exist to prevent exactly that.

## Output

- **Readout**: The figures, with windows and accounts named.
- **Flags**: What deserves a deeper skill or a human decision.

## Related

- Skill: [indexation-health](https://www.getmcpads.com/skills/indexation-health.md)