Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add bregman-arie/devops-sre-skills --skill diagnose-imagepullbackoffgit clone --depth 1 https://github.com/bregman-arie/devops-sre-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/bregman-arie/devops-sre-skills/diagnose-imagepullbackoff)<a href="https://agentmods.dev/skills/bregman-arie/devops-sre-skills/diagnose-imagepullbackoff"><img src="https://agentmods.dev/badge/skills/bregman-arie/devops-sre-skills/diagnose-imagepullbackoff/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/bregman-arie/devops-sre-skills/diagnose-imagepullbackoff"><img src="https://agentmods.dev/badge/skills/bregman-arie/devops-sre-skills/diagnose-imagepullbackoff.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00020 | $0.00436 |
| Opus 5 | $0.00010 | $0.00218 |
| Sonnet 5 | $0.00004 | $0.00087 |
| Haiku 4.5 | $0.00002 | $0.00044 |
Grade A, and why
Diagnose ImagePullBackOff scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
When to use
Use when a pod is stuck in ImagePullBackOff or ErrImagePull.
Preconditions
- You have read access to the namespace.
- You can identify the image reference from pod spec or describe output.
Procedure
- Confirm the failing image and container.
- Read the event message for the exact pull error (404/401/timeout/TLS).
- Validate the image name/tag/digest exists (out-of-band via registry).
- Validate image pull secrets and service account configuration.
- Validate network egress/DNS/TLS to the registry.
Decision points
not found: wrong tag/digest or repo path.unauthorized: missing/incorrect credentials or secret reference.i/o timeout: network path, proxy, firewall, or registry outage.x509: certificate chain/mitm/proxy issues.
Verification
- New pods progress to
Runningwithout pull errors. - Events stop showing pull failures.
Rollback / undo
- Revert image reference to the last known-good tag/digest.
- Revert service account/secret references if changed.
Escalation
- Registry team/vendor if the registry is down or auth is broken broadly.
- Platform/network team for cluster-wide DNS/egress/TLS issues.
Examples
kubectl -n <ns> get pod <pod>
kubectl -n <ns> describe pod <pod>
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 67 lines · 20 tokens per session scan A 240bb0f98e63
Diagnose ImagePullBackOff is a skill published in the GitHub repository bregman-arie/devops-sre-skills (22 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 20 tokens to every session and 436 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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