head to head/Developer Tools

Circleback vs observatory

Neck and neck on boosts. Profiles, pricing and deals below.

Circleback

Circleback Support

community boosts

⚡ 0

pricing

Freemium

what it is

Connect other AI apps like ChatGPT, Claude, Cursor, and more to Circleback

observatory

Independent drift detection for public MCP servers - free, read-only, reproducible.

community boosts

⚡ 0

pricing

Freemium · Free public API

what it is

Dominion Observatory - independent, read-only measurement of public MCP servers. Signed tool-definition captures, canonicalization-hashed so any third party can recompute them, and drift detection when a server's tools change. Free public API, no account required.