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Limitations

Current 0.1.0-dev limitations:

  • The contract and SDK are experimental and may change incompatibly.
  • A Python reference SDK and a TypeScript reference SDK (packages/typescript/) exist, with shared-schema and golden-event parity; no other language binding exists yet.
  • OTel span events, Logs, and basic metrics are implemented against caller-owned providers; collector/backend interoperability is not yet exercised.
  • No factory helper emits approval.cancelled, the approval.execution_* outcomes, or the evidence.* lifecycle events; these event types exist in the schema but nothing in either SDK produces them yet.
  • TRACE finalization is software-only and requires explicitly complete evidence plus trusted caller configuration.
  • Action telemetry records resolved attempts only; it does not expose in-flight lifecycle transitions.
  • Evidence memory mode is not durable. Callback mode defines acknowledgement and retry behavior but the adopter owns storage, idempotency, and recovery.
  • Propagation currently supports mutable string mappings; framework-specific HTTP, RPC, and messaging carrier adapters are not yet included.
  • The SDK validates declared metadata but cannot prove a producer's policy decision, identity, classification, token count, or cost is truthful.
  • Operational OTel delivery may be sampled or dropped and is not durable audit evidence.
  • The current schemas do not provide a general content-capture profile.
  • Interoperability has been exercised locally with OpenTelemetry Python, not across collectors, backends, or languages.