Computed from on-chain records
Maker ratings
The program writes every closed period to the maker's profile. Nobody self-reports, and the record follows the maker's wallet across every SLA it takes.
Read it as service history, not an endorsement: a grade counts periods, not how much was at stake or who the counterparties were, so a maker could build one with friendly issuers and easy terms. The counterparties column shows how many different issuers it served.
How ratings workA rule applied to public data, not an opinion: anyone can recompute it from the maker profiles on-chain.
AAA99.5% or more of scored periods met, no breaches
AA98% or more
A95% or more
BBB90% or more
BB80% or more, or any breach
Bbelow 80%
Dbreached at least half of its agreements
NRfewer than 10 scored periods