troubleshoot-missing-data SKILL.md skillA
troubleshoot-missing-data from prometheus/prometheus-mcp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add prometheus/prometheus-mcp/troubleshoot-missing-data@git:20260721.4db318bPins git:20260721.4db318b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- prometheus/prometheus-mcp
- Path
pkg/mcp/assets/skills/troubleshoot-missing-data/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260721.4db318b, committed Jul 21, 2026
- Size
- 2,346 bytes
- Repository stars
- 138
- License
- Apache-2.0
Diagnose missing metrics, absent series, or scrape gaps. Use when queries unexpectedly return empty, a metric stopped reporting, a target is down or unscraped, or dashboards show no data; walks target health, metadata, and config checks.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Troubleshooting Missing Data
Work out why an expected metric or series is absent: the target is not being scraped, the target no longer exposes it, the labels changed, or the query itself misses data that exists. Narrow down where the pipeline breaks.
## Getting oriented
- list_targets shows scrape target health, the lastError for failing scrapes, and the labels applied at scrape time.
- label_values on __name__ (optionally with matchers) confirms whether a metric name exists at all right now.
- targets_metadata lists which metrics a given target actually exposes.
- config shows the scrape configuration: job definitions, relabeling, and intervals.
- Prometheus's own scrape metrics explain silent drops: nonzero rates on the prometheus_target_scrapes_* rejection counters (sample_out_of_order, sample_out_of_bounds, duplicate_timestamp, exceeded_sample_limit) mean samples arrived but were rejected at ingestion.
## Topics worth exploring
Treat these as starting points and follow where the data stops:
- Is the target up and scraped? query up{job="<job>"} and check list_targets for down or missing targets and their scrape errors.
…Read the whole file at its exact version.
How to install
mdr add prometheus/prometheus-mcp/troubleshoot-missing-data@sha256:5c7518b0148ed7dbThe line at the top of this page pins the label git:20260721.4db318b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_7pifdpndjti6lnqf)
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Versions
The registry has recorded 1 version of this file, committed on Jul 21, 2026.
Audit of the latest version
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- pass: Frontmatter declares a description
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- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
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- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
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- pass: No link to a raw IP address
- pass: No script tag
Source
prometheus/prometheus-mcp · 138 stars · license Apache-2.0 · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7pifdpndjti6lnqf GET https://markdownregistry.com/api/v1/resolve?ref=prometheus/prometheus-mcp/troubleshoot-missing-data GET https://markdownregistry.com/api/v1/blob/5c7518b0148ed7dbfc78044ff5f0723fb7f3fcadfdb3ab5431d0505b27c3d1b7
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.