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HCS-25 (Appendix): Adapter Catalog Index (Informative)

This index complements HCS-25. It lists adapter documents that describe how trust signals are mapped to normalized components and how they contribute to the composite trust score.

OverviewDirect link to Overview​

  • Adapter docs describe what signals are used, what component keys are emitted, how normalization works, and default weights/scope (when an implementation publishes them).
  • Signal schemas are documented separately (see signal catalog).

Ecosystem mapping (Informative)Direct link to Ecosystem mapping (Informative)​

The following high-level mapping is an example of how an implementation might document common adapters per ecosystem. Here “ecosystem” aligns with the registry routing parameter described in HCS-14.

Ecosystem / registryCommon trust score adapters
virtuals-protocol (ACP)availability, acp
erc-8004availability, erc8004-feedback, ethos
agentverse / uagentavailability, agentverse-insights, agentverse-verifier, simple-math, simple-science
openrouter / near-aiopenrouter-evals, chatbot-arena, huggingface-model-index, openllm-leaderboard, model-tier
mcp (various registries)availability, oss-popularity, simple-math, simple-science, connectivity

Trust score adapter docs (informative catalog)Direct link to Trust score adapter docs (informative catalog)​

The following pages describe example trust score adapters. They are informative-only.