Implement tasks from an OpenSpec change. Use when the user wants to start implementing, continue implementation, or work through tasks.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
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**
1. **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: <name>" and how to override (e.g., `/opsx:apply <other>`).
2. **Check status to understand the schema**
```bash
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)
3. **Get apply instructions**
```bash
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)
…
The line at the top of this page pins the label v1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
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Source
GitHub
taskless/cli · 239 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r24r2g554s2goxqt
GET https://markdownregistry.com/api/v1/resolve?ref=taskless/cli/openspec-apply-change
GET https://markdownregistry.com/api/v1/blob/aef85866e3f6c8d9b97f8ea624a2dcbef426d5be5719fe4038a382e125806c50
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
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