Limnion (YC F26) — Telemetry storage for the agentic era
Limnion is building an open-standards telemetry storage platform for observability at scale, including agentic workflows. Siglake is the open-source project that sits at the heart of it, designed around OTel, Parquet, and Iceberg.
Limnion is a Y Combinator company in the Fall 2026 batch. Its directory entry describes it as: Telemetry storage for the agentic era. The founder listed is Todd Persen (Founder) (Y Combinator directory entry, October 30, 2026).
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
Limnion is building an open-standards telemetry storage platform for observability at scale, including agentic workflows. Siglake is the open-source project that sits at the heart of it, designed around OTel, Parquet, and Iceberg. No proprietary storage, no vendor lock-in.
Checked away from the directory entry. What is below does not come from the company's Y Combinator page.
Limnion builds agent-first observability software designed around open standards. Siglake is our open-source telemetry platform.
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Todd Persen
Founder
Founder/CEO of Limnion. Previously Co-founder/CEO of Era Software (acq ServiceNow) and Co-founder/CTO of InfluxData (YC W13).
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
One of 347 companies held here in B2B › Infrastructure.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
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