Billing API - Squasher

Use the Billing API when a script or agent needs the current public plan catalog.

Operations

Operation	Method and path	Purpose
`billing.listPlans`	`GET /v1/billing/plans`	List available billing plans.

This endpoint does not require project scope. It returns the plan catalog; account-specific billing actions remain separate from this public API surface. Plans include a retention_days_by_feature object because error history, logs, traces, metrics, replays, and AI observations can have different retention windows.

CLI and MCP

Use squasher billing plans for terminal workflows. In MCP Code Mode, call search("billing") before executing.

Agent handoff

Fetch Squasher billing plans using billing.listPlans. Summarize plan names, limits, and public pricing fields exactly as returned. Do not infer account-specific entitlement or billing state from the catalog alone.

Related: Plans and billing.