---
title: "Metric snapshot"
type: "glossary-term"
category: "Corpus & data pipeline"
canonical_url: "https://www.graphcanon.com/glossary/corpus-and-data/metric-snapshot"
updated: "2026-07-09"
---

# Metric snapshot

**A metric snapshot is a single dated record of a tool's numbers (like stars and open issues), appended over time to build a history.**

A **metric snapshot** captures a tool's numeric signals at a point in time and stores them append-only. Collect them repeatedly and you get a time series you can measure change against.

Snapshots are what make "growth" computable: without a history there is no way to say a project gained a thousand stars this month.

## In GraphCanon

GraphCanon records metric snapshots during sync so it can compute 30-day deltas - the basis of the momentum (star velocity) signal on trending and tool pages.

## See also

- [Trending tools](/trending)

## Related terms

- [Momentum (star velocity)](/glossary/trust-and-signals/momentum.md)
- [GitHub sync](/glossary/corpus-and-data/github-sync.md)

[Corpus & data pipeline](/glossary/corpus-and-data.md) · [All glossary terms](/glossary.md)

---

**Machine-readable endpoints**

- JSON: [`/api/graphcanon`](/api/graphcanon)
- LLM index: [/llms.txt](/llms.txt)
- Full corpus: [/llms-full.txt](/llms-full.txt)

_GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_