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Openspec Apply Change · fengshao1227 | DecimalAI

codingby fengshao1227

Openspec Apply Change

fengshao1227/openspec-apply-change

Source fengshao1227/ccg-workflow ↗License MIT

Implement tasks from an OpenSpec change.

NewMaintained

Automatic

Coding pack

Last verified 8/9/2026

What it changes

Passed 4 of 14 test cases with the skill, and 4 of 14 without it.

Without skill32%

With skill32%

Checks it passed that the model alone missed

Recommends archiving the completed change.
Includes a command hint in the format /opsx:apply <other>.
Executes openspec status with the --change flag and --json option.

and 1 more in the full report

4 fixed3 passed either way11 still failing4 broke

Pass-rate lift: 0 pp
Tokens: +36%
Agent turns: 0%
Response time: +38%

Model gemini-3.6-flashMeasured 8/9/2026v17 of 22 cases passed with skill · 14 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/fengshao1227-openspec-apply-change/SKILL.md https://app.decimal.ai/s/fengshao1227-openspec-apply-change/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add fengshao1227-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/fengshao1227-openspec-apply-change/ and pins it in .decimal/skills.lock

decimalai skills add fengshao1227-openspec-apply-change

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

curl -fsSL --create-dirs -o .claude/skills/fengshao1227-openspec-apply-change/SKILL.md https://app.decimal.ai/s/fengshao1227-openspec-apply-change/SKILL.md

Raw file: /s/fengshao1227-openspec-apply-change/SKILL.md ↗ · machine-readable summary at /s/fengshao1227-openspec-apply-change.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 4

Prompt

For the 'billing-fix' change, we need to gather task progress and instruction context. What specific OpenSpec CLI command fetches state and file lists?

What was checked, without and with the skill
Checked	Without skill	With skill
Executes openspec instructions apply with the --change flag and --json option.	Missed	Passed

case-07 · gemini-3.6-flash · 8/9/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md145 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")
- 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:
- Context 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
- If state: "all_done": congratulate, suggest archive
- Otherwise: proceed to implementation

Track record

Benchmark

4 / 14

test cases passed, vs 4 / 14 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 — 8/3/2026

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

fengshao1227 / ccg-workflow

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

View on GitHub ↗

License MITImported 8/3/2026Version v1

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