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 infraspecdev/tesseract --skill deprecation-check-and-upgradegit clone --depth 1 https://github.com/infraspecdev/tesseractWrote 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/infraspecdev/tesseract/deprecation-check-and-upgrade)<a href="https://agentmods.dev/skills/infraspecdev/tesseract/deprecation-check-and-upgrade"><img src="https://agentmods.dev/badge/skills/infraspecdev/tesseract/deprecation-check-and-upgrade/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/infraspecdev/tesseract/deprecation-check-and-upgrade"><img src="https://agentmods.dev/badge/skills/infraspecdev/tesseract/deprecation-check-and-upgrade.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 | $0.00048 | $0.01321 |
| Opus 5.5 | $0.00019 | $0.00528 |
| Sonnet 5.5 | $0.00010 | $0.00264 |
| Haiku 4.5 | $0.00005 | $0.00132 |
Grade A, and why
kubernetes-deprecation-check-and-upgrade 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kubernetes Deprecation Check and Upgrade
Overview
Comprehensive API deprecation audit with migration guidance, testing requirements, and local validation paths. Scans manifests, Helm templates, and Kustomize bases for deprecated or removed Kubernetes API versions, provides concrete migration steps, calls out breaking changes, and recommends validation approaches including local Kind cluster testing.
Triggered by direct user request for upgrade/version checks, or as a cascading recommendation from other K8s review skills (security-audit, operational-review, helm-review, kustomize-review) when they detect deprecated APIs.
When to Use
- When planning a Kubernetes version upgrade
- When other K8s review skills flag deprecated APIs and recommend this skill
- When checking manifests for API compatibility with a target K8s version
- When migrating manifests from deprecated to current API versions
- When auditing Helm charts or Kustomize bases for API version currency
When NOT to Use
- For general K8s security/cost/ops review — use the dedicated skills
- For Terraform provider version upgrades — use Terraform-specific skills
- When manifests are already on current API versions with no upgrade planned
Workflow
Phase 1: Check
- Determine target version: Ask the user for the target K8s version if not detectable from cluster config, Helm chart constraints, or context. This is required — do not assume a version.
- Scan manifests: Read all K8s manifest files (.yaml, .yml), Helm templates, and Kustomize bases. Extract
apiVersionandkindfrom each resource. - Cross-reference deprecation tables: For each resource, check against
deprecation-tables.mdto determine if the API version is deprecated or removed in the target version. - Report findings: For each deprecated/removed API, report: current API version → deprecated in → removed in → replacement API → severity (Warning if deprecated, Critical if removed in target).
Phase 2: Breaking Changes
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 86 lines · 48 tokens per session scan A 59f708ec62c4
kubernetes-deprecation-check-and-upgrade is a skill published in the GitHub repository infraspecdev/tesseract (5 stars, last pushed 3mo ago), licensed MIT. It adds 48 tokens to every session and 1,321 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.
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