README.md

metadata

license: cc-by-4.0
language:
  - en
pretty_name: Nerq MCP-server repository mortality (2026-07)
size_categories:
  - 10K<n<100K
tags:
  - mcp
  - model-context-protocol
  - software-supply-chain
  - component-mortality
  - repository-liveness
  - github
task_categories:
  - tabular-classification

Nerq MCP-server repository mortality — dataset dump (2026-07)

As of: 2026-07-22 · Rows: 28,824 · License: CC-BY 4.0 Publisher: lastseen.dev (organisation).

Canonical reference: Zenodo DOI https://doi.org/10.5281/zenodo.21869879 (cite this; always resolves to the latest version).

© 2026 lastseen.dev. Licensed CC-BY 4.0 — free to use, share, adapt, and use commercially, with attribution to lastseen.dev (link back). No share-alike. Dated factual observations, without warranty. The continuously-updated series is available via the free lastseen.dev / Nerq API.

Dataset summary

One row per dated observation of a public GitHub repository linked from an indexed Model Context Protocol (MCP) server, classified by repository liveness. Same population as The Nerq Census No.1 / No.2 (2026).

Files

• nerq-mcp-mortality-2026-07.csv — one row per observation.
• nerq-mcp-mortality-2026-07.json — the same rows plus a metadata head.

Columns

entity_id, registry, observed_date, state, http_status, last_commit, source, provenance.

Full schema, thresholds, and interval-censoring notes are in README.md and methodology.md.

State thresholds

• deleted — HTTP 404 (deleted or made private).
• alive — reachable, last commit ≤ 180 days before observed_date.
• dormant — reachable, 180–365 days.
• abandoned — reachable, > 365 days.
• unknown — unresolved at seed.

State counts (2026-07-22)

alive 20,390 · deleted 3,448 · abandoned 2,686 · dormant 2,259 · unknown 41 · total 28,824.

Caveats

404 conflates deletion and privatization. last_commit is the default-branch last commit from commits.atom. Prevalence dump, not a lifespan study (MCP births are left-censored). Interval-censoring and a known 2026-07-30 collection gap are disclosed in the methodology.

Citation

lastseen.dev. Nerq MCP-server repository mortality — dataset dump (2026-07). CC-BY-4.0. Canonical DOI: https://doi.org/10.5281/zenodo.21869879