Ledger
Find connectors you can trust.
A security registry for MCP servers with composite trust scores, per-version scanning, and cryptographic provenance so you know what you are connecting to before you connect.
See how it worksHow it works
Index & Scan
Every MCP server, every version
Ledger indexes the major public MCP registries and scans each new release, so a server gets checked again every time it changes.
Score
One composite trust score
Ledger rolls eleven signals and per-version scan results into a single 0–100 score, recorded with cryptographic provenance so you can trace where it came from.
Verify
Tool claims checked against behavior
Ledger compares each tool annotation with what the tool actually does. Verified means it matches. Unverified means it isn’t confirmed yet. Mismatch means the claim is wrong.
Choose
Review before you connect
Search any server, see its score and verification status, and connect only the servers you trust.
Explore the LedgerExample only. Not live Ledger results.
Ultra product
Ultra puts enforceable boundaries around autonomous systems without slowing down the work they're built to do.
Get started
Secure every action your agents take.
Free to start. Pay per action. No per-seat, no per-host, no SSO tax.