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.
git clone --depth 1 https://github.com/yuri-semenenko/ai-engineering-workspaceWrote 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/commands/yuri-semenenko/ai-engineering-workspace/migration-plan)<a href="https://agentmods.dev/commands/yuri-semenenko/ai-engineering-workspace/migration-plan"><img src="https://agentmods.dev/badge/commands/yuri-semenenko/ai-engineering-workspace/migration-plan/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/commands/yuri-semenenko/ai-engineering-workspace/migration-plan"><img src="https://agentmods.dev/badge/commands/yuri-semenenko/ai-engineering-workspace/migration-plan.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 | $0.00473 |
| Opus 5.5 | $0.00008 | $0.00189 |
| Sonnet 5.5 | $0.00004 | $0.00095 |
| Haiku 4.5 | $0.00002 | $0.00047 |
Grade A, and why
migration-plan 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 5d 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
Migration Plan Prompt
Role: Act as a senior engineer planning a risky migration or refactor — a framework upgrade, design-system swap, API version migration, or legacy-to-modern replacement.
Context: The decision to migrate has been made (an RFC or equivalent). What is needed now is the executable plan: how to get there safely and reversibly without changing user-visible behavior.
Task: Produce a migration plan that sequences the work into small, independently shippable, reversible slices.
Constraints:
- Behavior-preserving by default. Keep new behavior or features as a separate change, after the migration.
- Every slice must be independently shippable and reversible; no step that can only be undone by a second migration. A step that writes data or external state says what a rerun after a partial failure does: idempotent, skips finished work, or a named recovery procedure. Do not assume idempotency, and do not count a retry as a rollback.
- Capture the invariant (user-visible behavior that must not change) as characterization tests or golden output before touching anything.
- Feature flags are temporary: name the removal trigger and date when you add one.
- Prefer incremental over big-bang; if a big-bang cutover is unavoidable, say why and how you rehearse it.
- Delegate the read-only inventory and characterization (call sites, seam, current behavior) to a focused gathering pass; keep the invariant, migration shape, and rollback criteria as the main judgment.
Output Format:
- The invariant, and how it is captured (characterization tests / golden output)
- Current to target, and the seam you migrate across
- Migration shape and why: strangler / adapter / expand-contract / branch-by-abstraction
- Ordered slices, each with its before/after verification, flag, rollback criteria, and rerun behavior where it writes state
- Rollout and rollback plan, ending with flag and dead-code cleanup
- The highest-risk or least-reversible step, and its mitigation
Success Criteria:
- The system is releasable and reversible after every slice.
- User-visible behavior is provably unchanged at each step.
- Every feature flag has a named removal trigger.
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.
- 5d ago Changed 148b61259dbb
- 6d ago First seen · 37 lines · 20 tokens per session scan A 12c2239feb7a
migration-plan is a command published in the GitHub repository yuri-semenenko/ai-engineering-workspace (4 stars, last pushed 3d ago), licensed MIT. It adds 20 tokens to every session and 473 once invoked, about $0.0001 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 2026-10-31.
migration-plan compared with commands from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| migration-planyuri-semenenko/ai-engineering-workspace | Command | 4 | 3d ago | MIT | A | 20 | GitHub Copilot |
| spec-trace-requirementsrjmurillo/ai-agents | Command | 49 | yesterday | MIT | A | 0 | GitHub Copilot |
| merge-conflict-analysisrjmurillo/ai-agents | Command | 49 | yesterday | MIT | A | 0 | GitHub Copilot |
| ios-buildNagarjuna2997/ios-agent-skill | Command | 40 | 8d ago | MIT | A | 19 | Claude Code |
| sdd-setupGregorBiswanger/featherspec | Command | 70 | 1mo ago | MIT | A | 27 | Claude Code |
| playwright-executekatalon-labs/true-skills | Command | 10 | 17d ago | MIT | A | 117 | GitHub Copilot |
| test-maintenancekatalon-labs/true-skills | Command | 10 | 17d ago | MIT | A | 131 | GitHub Copilot |