Page insights
period is day, week or days_28. Each metric comes back with values[], one entry per period with value and end_time.
Post insights
Post metrics are lifetime totals and take no
period.
What to expect from the data
Data can lag up to 48 hours. Metrics Meta has retired return an error naming the metric; drop it and keep the rest.Read insights with the CLI
Read insights with MCP
get_facebook_insights reads the Page when called with only the channel, and one post when postId is set. metrics and period are optional and default to the tables above.