2026-10-11 17:13 UTC

Independent deployments will determine whether Otelcol-GenAI-Sketches can derive useful bounded usage metrics from agent traces without exporting raw prompts or creating unmanageable cardinality.

state: expiredheat: lowuncertainty: highknownscott: mediumagent-observability opentelemetry privacyOtelcol-GenAI-SketchesOpenTelemetry

What is this?

Otelcol-GenAI-Sketches appears to be a Show HN project proposing bounded metrics derived from OpenTelemetry agent traces while avoiding raw-prompt export; the evidence title links it to an earlier sketch library called llm-sketchkit, but the supplied material does not identify the author. The snippets establish that OpenTelemetry is used as a transport/schema for agent observability and that high-cardinality metrics are a recognized operational problem, with aggregation and sampling among the mitigations. However, none of the supplied search results documents an independent deployment of this specific project, so the hypothesis that deployments have confirmed its utility, privacy properties, or cardinality bounds remains unsupported here.

Why it matters to Scott

Scott’s Agent Observability page already holds the core position: production agents need trace-derived usage and cost telemetry, while his privacy-tokenized boundary addresses avoiding sensitive raw-data exposure. This project adds an unvalidated sketch-based implementation that could affect his Langfuse/OpenTelemetry-style instrumentation choices if independent deployments demonstrate useful metrics and bounded cardinality, but the supplied evidence does not yet show that validation.
ip:concept.agent-observabilityip:concept.observabilitydev:technology.langfusedev:concept.privacy-tokenized-agent-boundaryradar:concept.agent-observabilityradar:concept.privacyradar:concept.data-retentionradar:decant-agent-token-accounting
queries asked of Scott's wikis
  • privacy-preserving observability for LLM agents
  • bounded-cardinality metrics from agent traces
  • OpenTelemetry instrumentation in agent harnesses
  • raw prompt retention and telemetry policy
  • trace-derived metrics versus logs and evals
  • sketch algorithms for usage analytics

Measured heat

no measured readings yet — the hourly heat pass fills this in

How the heat travelled

no chain yet — the hourly chain pass fills this in

Evidence (2) — ⭐ canonical anchor

sourceobjectauthorscorecomments
🟧 hnShow HN: Bounded GenAI metrics from Otel traces with O raw promptskwisatzh42
🟧 echo.github ⭐The earliest primary artifact is the author's initial public release of llm-sketchkit, the sketch library that the HN author says he wrote fVijay Erramilli——

Interpretation history

Decision trace