Safe Database Migration Patterns
affaan-m/ECC
Rules and examples for safe, reversible schema changes in production: zero-downtime column and index changes, large data backfills and ORM migration workflows.
A skill your agent uses when migrating or changing generic ECM math in openfdd.ecmengineering, publishing PyPI ECM workbook exports, or Compare honesty (FITTED vs industry).
Custom licenceAuto-check passed
Install Openfdd Ecm Engineering
$ npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install bbartling/open-fdd openfdd-ecm-engineering --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/bbartling/open-fdd.git skills-src && mkdir -p .claude/skills && cp -r skills-src/openfdd_agent_spec/skills/openfdd-ecm-engineering .claude/skills/openfdd-ecm-engineering && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "openfdd-ecm-engineering" agent skill from https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineering into .claude/skills/openfdd-ecm-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "openfdd-ecm-engineering", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineeringType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install bbartling/open-fdd openfdd-ecm-engineering --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bbartling/open-fdd.git skills-src && mkdir -p .agents/skills && cp -r skills-src/openfdd_agent_spec/skills/openfdd-ecm-engineering .agents/skills/openfdd-ecm-engineering && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "openfdd-ecm-engineering" agent skill from https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineering into .agents/skills/openfdd-ecm-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "openfdd-ecm-engineering", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install bbartling/open-fdd openfdd-ecm-engineering --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bbartling/open-fdd.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/openfdd_agent_spec/skills/openfdd-ecm-engineering .cursor/skills/openfdd-ecm-engineering && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "openfdd-ecm-engineering" agent skill from https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineering into .cursor/skills/openfdd-ecm-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "openfdd-ecm-engineering", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/bbartling/open-fdd.git --path openfdd_agent_spec/skills/openfdd-ecm-engineering--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install bbartling/open-fdd openfdd-ecm-engineering --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bbartling/open-fdd.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/openfdd_agent_spec/skills/openfdd-ecm-engineering .gemini/skills/openfdd-ecm-engineering && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "openfdd-ecm-engineering" agent skill from https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineering into .gemini/skills/openfdd-ecm-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "openfdd-ecm-engineering", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install bbartling/open-fdd openfdd-ecm-engineeringInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/bbartling/open-fdd.git skills-src && mkdir -p .github/skills && cp -r skills-src/openfdd_agent_spec/skills/openfdd-ecm-engineering .github/skills/openfdd-ecm-engineering && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "openfdd-ecm-engineering" agent skill from https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineering into .github/skills/openfdd-ecm-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "openfdd-ecm-engineering", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install bbartling/open-fdd openfdd-ecm-engineering --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bbartling/open-fdd.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/openfdd_agent_spec/skills/openfdd-ecm-engineering .opencode/skills/openfdd-ecm-engineering && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "openfdd-ecm-engineering" agent skill from https://github.com/bbartling/open-fdd/tree/master/openfdd_agent_spec/skills/openfdd-ecm-engineering into .opencode/skills/openfdd-ecm-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "openfdd-ecm-engineering", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
openfdd-ecm-engineering- GitHub stars
- 172
- Token cost
- ~966 tokens
- SKILL.md length
- 289 words
- Files
- 1
- Skills in repo
- 23
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses when migrating or changing generic ECM math in openfdd.ecmengineering, publishing PyPI ECM workbook exports, or Compare honesty (FITTED vs industry).
- Changing generic ECM math in openfdd.ecmengineering
- SKILL.md covers Golden example (Liberty…, Migration pattern, Already delegated (do not… and Result contracts, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Publishing PyPI ECM workbook exports
What it does
Openfdd Ecm Engineering is an agent skill from bbartling/open-fdd. Use when migrating or changing generic ECM math in openfdd.ecmengineering, publishing PyPI ECM workbook exports, or Compare honesty (FITTED vs industry). Triggers on: ECM, fan affinity, scheduling bins, full-parity workbook, IndustryScreening, BUG-ECM-018, BUG-ECM-019, satreset, open-fdd PyPI wheel.
Its SKILL.md is about 970 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Fault Detection Diagnostics (FDD) for HVAC datasets.
When your agent uses it
- Changing generic ECM math in openfdd.ecmengineering
- Publishing PyPI ECM workbook exports
- Compare honesty (FITTED vs industry)
- Scheduling bins
Example prompts
- “/openfdd-ecm-engineering”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit b5c4e9c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Openfdd Ecm Engineering loads about 966 tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 289 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 289 words (~966 tokens).
“Canonical generic math: open_fdd.ecm_engineering (PyPI). EnergyPlus IDF surgery stays out of openfdd-mcp; patch/sim via EnergyPlus-MCP / WattLab runner.”
- name
- openfdd-ecm-engineering
Files
Just SKILL.md in openfdd_agent_spec/skills/openfdd-ecm-engineering of bbartling/open-fdd.
Open the folder on GitHubat commit b5c4e9c
Compare with similar skills
Openfdd Ecm Engineering next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Openfdd Ecm Engineering this skillbbartling/open-fdd | 172 | — | ~966 | Automated safety check: Pass | Custom licence | |
| Safe Database Migration Patternsaffaan-m/ECC | 275k | — | ~3.3k | Automated safety check: Pass | MIT | |
| Database Migrationsaffaan-m/ECC | 275k | 4 repos | ~3k | Automated safety check: Pass | MIT | |
| Reversible MigrationJuliusBrussee/caveman | 110k | 1 repos | ~196 | Automated safety check: Pass | Apache-2.0 | |
| Database Migrationsaffaan-m/ECC | 275k | 1 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Migrationkortix-ai/suna | 20k | — | ~1.2k | Automated safety check: Pass | Custom licence |
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Questions about Openfdd Ecm Engineering
What does Openfdd Ecm Engineering do?
A skill your agent uses when migrating or changing generic ECM math in openfdd.ecmengineering, publishing PyPI ECM workbook exports, or Compare honesty (FITTED vs industry). Openfdd Ecm Engineering is an agent skill from bbartling/open-fdd.ecmengineering, publishing PyPI ECM workbook exports, or Compare honesty (FITTED vs industry).
When should I use Openfdd Ecm Engineering?
Openfdd Ecm Engineering fits situations like: changing generic ECM math in openfdd.ecmengineering; publishing PyPI ECM workbook exports; compare honesty (FITTED vs industry); scheduling bins.
How do I install Openfdd Ecm Engineering in Claude Code?
Run `npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a claude-code`. Or copy the skill folder (openfdd_agent_spec/skills/openfdd-ecm-engineering in bbartling/open-fdd) into .claude/skills/openfdd-ecm-engineering in your project. Claude Code loads it when a task matches its description.
How do I install Openfdd Ecm Engineering in Codex?
Run `npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a codex`. Or copy the skill folder (openfdd_agent_spec/skills/openfdd-ecm-engineering in bbartling/open-fdd) into .agents/skills/openfdd-ecm-engineering in your project. Codex loads it when a task matches its description.
Can I use Openfdd Ecm Engineering in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add bbartling/open-fdd --skill openfdd-ecm-engineering -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/openfdd-ecm-engineering, .gemini/skills/openfdd-ecm-engineering, .github/skills/openfdd-ecm-engineering and .opencode/skills/openfdd-ecm-engineering in your project.
What does Openfdd Ecm Engineering need to run?
SKILL.md names no scripts, command-line tools or credentials: Openfdd Ecm Engineering is instructions for the agent only. Our summary lists: Python 3.
Does Openfdd Ecm Engineering access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Openfdd Ecm Engineering safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Openfdd Ecm Engineering use?
Openfdd Ecm Engineering has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Openfdd Ecm Engineering use?
About 966 tokens (SKILL.md is roughly 3.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Openfdd Ecm Engineering?
Skills that share tags, products or a category with Openfdd Ecm Engineering: Safe Database Migration Patterns (affaan-m/ECC, 275k stars), Database Migrations (affaan-m/ECC, 275k stars), Reversible Migration (JuliusBrussee/caveman, 110k stars) and Database Migrations (affaan-m/ECC, 275k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Openfdd Ecm Engineering?
bbartling (a GitHub user) maintains it in bbartling/open-fdd, which has 172 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 7, 2026.
Source: bbartling/open-fdd on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.