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 Plazmodium/odin-workflow --skill deprecation-and-migrationgit clone --depth 1 https://github.com/Plazmodium/odin-workflowWrote 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/plazmodium/odin-workflow/deprecation-and-migration)<a href="https://agentmods.dev/skills/plazmodium/odin-workflow/deprecation-and-migration"><img src="https://agentmods.dev/badge/skills/plazmodium/odin-workflow/deprecation-and-migration/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/plazmodium/odin-workflow/deprecation-and-migration"><img src="https://agentmods.dev/badge/skills/plazmodium/odin-workflow/deprecation-and-migration.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 | $0.00023 | $0.00309 |
| Opus 5 | $0.00012 | $0.00154 |
| Sonnet 5 | $0.00005 | $0.00062 |
| Haiku 4.5 | $0.00002 | $0.00031 |
Grade A, and why
deprecation-and-migration 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 8d 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
deprecation-and-migration
When To Use
- Removing APIs, flags, files, schemas, dependencies, or behavior.
- Migrating users, data, configuration, or integrations.
- Sunsetting legacy systems.
Workflow
- Identify what is being removed or migrated and who depends on it.
- Prove usage, non-usage, or migration readiness with code search, telemetry, tests, or stakeholder evidence.
- Choose advisory deprecation, compulsory migration, compatibility shim, or immediate removal.
- Define migration steps, rollback path, and communication needs.
- Remove code only after dependents are handled or the risk is accepted.
- Add tests or checks that prevent zombie code from returning.
Anti-Rationalization
| Excuse | Rebuttal |
|---|---|
| "This looks dead." | Dead code claims need evidence. |
| "Keeping it is harmless." | Code is liability: every line has maintenance cost. |
| "We can fix users after removal." | Breaking consumers without a plan creates incidents. |
Verification
- Dependents are identified or the search limits are documented.
- Migration or removal has tests, telemetry, or review evidence.
- Rollback or recovery is considered.
Exit Criteria
- Legacy surface area shrinks without surprising active consumers.
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.
- 8d ago First seen · 42 lines · 23 tokens per session scan A 1152fbf71e4e
deprecation-and-migration is a skill published in the GitHub repository Plazmodium/odin-workflow (0 stars, last pushed 3mo ago), licensed MIT. It adds 23 tokens to every session and 309 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 2026-09-01.
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