Who governs the chain's EVault factory, whose implementation every upgradeable EVK vault runs. Upgrading that implementation is an admin call of the factory's governor; on every indexed chain the governor's admin is the EVault factory timelock, so an upgrade is scheduled on the timelock and runs after its delay. The governor's pause guardians can pause the factory, and with it every upgradeable vault, without delay; its unpause admins unpause it.

• chainId is required. An indexed chain without an indexed EVault factory and upgrade admin answers 404 NOT_FOUND, as a missing vault does.
• governor.address is the contract for /v3/governance/roles (admin, pause guardians, unpause admins). timelock.address is the timelock for /v3/governance/timelock-operations (queued upgrades) and the contract for /v3/governance/roles.
• Block numbers and delays (seconds) are decimal strings; timestamps are ISO 8601.