Install
$ agentstack add skill-mmccalla-coding-agent-skill-library-deprecation-and-migration ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
About
Deprecation and Migration
When to use
Use this skill when removing or replacing a skill, doc path, workflow, API surface or other user-facing behaviour that still has active dependents.
Objective
Remove old paths safely by providing a clear replacement, a controlled transition period and a verified end state.
Procedure
- Identify what is being replaced and why.
- Define the replacement path and compatibility expectations.
- Mark the old path clearly with deprecation guidance.
- Migrate dependents in small, observable steps.
- Remove the old path only after usage is confirmed to be gone or intentionally waived.
Rules
- Do not delete a legacy path before the replacement is valid.
- Do not surprise users with a silent incompatibility break.
- Do not leave parallel paths undocumented.
- Do not treat migration as complete until the old path is no longer needed.
Example
When replacing an old skill path, add the new path first, update references, leave a short deprecation note where users will find the old entry and run a search for dependants. Remove the old path only after consumers have moved or the user explicitly accepts the compatibility break.
References
Verification
- [ ] Deprecated surface and timeline stated.
- [ ] Migration path and consumer communication documented.
- [ ] Compatibility or dual-run period noted.
- [ ] Residual migration risks stated.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: mmccalla
- Source: mmccalla/coding-agent-skill-library
- License: Apache-2.0
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.