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Engineering Notes

Practical write-ups from the engineers who build Lionhouse: what we learned running telemetry pipelines, securing machine identities, and putting AI agents to work on compliance.

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20 October 2026
9 min read
- Observability
- OpenTelemetry
- ClickHouse
High-Cardinality Telemetry Without the Bill: OpenTelemetry on ClickHouse
Why per-series pricing punishes the labels you need most during an incident, and how a Kafka and ClickHouse pipeline for OpenTelemetry changes the cost model.
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6 October 2026
7 min read
- Security
- Non-Human Identity
- PCI DSS
Inventorying Non-Human Identities: A Practical Starting Point
Service accounts, tokens, and CI credentials now outnumber people. Where to find them, what to record about each one, and how to shrink the list.
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15 September 2026
6 min read
- AI
- MCP
- Compliance
Letting AI Agents Collect Compliance Evidence, Safely
The Model Context Protocol lets agents call real tools. Here is how to scope, approve, and log those calls so agents help with audits without creating new risk.
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Engineering Notes

High-Cardinality Telemetry Without the Bill: OpenTelemetry on ClickHouse

Inventorying Non-Human Identities: A Practical Starting Point

Letting AI Agents Collect Compliance Evidence, Safely