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Openspec Apply Change · ayrtonvwf | DecimalAI

codingby ayrtonvwf

Openspec Apply Change

ayrtonvwf/openspec-apply-change

Source ayrtonvwf/skills ↗License MIT

Implement tasks from an OpenSpec change.

SkillScore63Maintained

Automatic

Coding pack

Last verified 8/6/2026

What it changes

Passed 11 of 18 test cases with the skill, and 7 of 18 without it.

Without skill38%

With skill63%

Checks it passed that the model alone missed

Suggests archiving the completed change
Includes /opsx:apply in the announcement
Pauses implementation to ask the user for clarification

and 6 more in the full report

9 fixed6 passed either way6 still failing3 broke

Pass-rate lift: +25 pp
Tokens: +26%
Agent turns: 0%
Response time: -66%

Model gemini-3.6-flashMeasured 8/6/2026v115 of 24 cases passed with skill · 18 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/ayrtonvwf-openspec-apply-change/SKILL.md https://app.decimal.ai/s/ayrtonvwf-openspec-apply-change/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add ayrtonvwf-openspec-apply-change, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/ayrtonvwf-openspec-apply-change/ and pins it in .decimal/skills.lock

decimalai skills add ayrtonvwf-openspec-apply-change

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/ayrtonvwf-openspec-apply-change/SKILL.md https://app.decimal.ai/s/ayrtonvwf-openspec-apply-change/SKILL.md

Raw file: /s/ayrtonvwf-openspec-apply-change/SKILL.md ↗ · machine-readable summary at /s/ayrtonvwf-openspec-apply-change.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 9

Prompt

In the JSON output of openspec status for 'billing-engine', which object key holds the planning scope and edit constraints?

What was checked, without and with the skill
Checked	Without skill	With skill
Identifies actionContext as the status JSON key for planning scope and edit constraints	Missed	Passed

case-16 · gemini-3.6-flash · 8/6/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md151 linessingle file

Implement tasks from an OpenSpec change.

Input: Optionally specify a change name. If omitted, check if it can be inferred from conversation context. If vague or ambiguous you MUST prompt for available changes.

Steps

Select the change

If a name is provided, use it. Otherwise:
- Infer from conversation context if the user mentioned a change
- Auto-select if only one active change exists
- If ambiguous, run openspec list --json to get available changes and use the AskUserQuestion tool to let the user select
Always announce: "Using change: " and how to override (e.g., /opsx:apply <other>).
Check status to understand the schema
```
openspec status --change "<name>" --json
```
Parse the JSON to understand:
- schemaName: The workflow being used (e.g., "spec-driven")
- planningHome, changeRoot, and actionContext: planning scope and edit constraints
- Which artifact contains the tasks (typically "tasks" for spec-driven, check status for others)
Get apply instructions
```
openspec instructions apply --change "<name>" --json
```
This returns:
- contextFiles: artifact ID -> array of concrete file paths (varies by schema - could be proposal/specs/design/tasks or spec/tests/implementation/docs)
- Progress (total, complete, remaining)
- Task list with status
- Dynamic instruction based on current state
Handle states:
- If state: "blocked" (missing artifacts): show message, suggest using openspec-continue-change

Track record

Benchmark

11 / 18

test cases passed, vs 7 / 18 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/2/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

ayrtonvwf / skills

.claude/skills/openspec-apply-change/SKILL.md

View on GitHub ↗

License MITImported 8/2/2026Version v1

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