Borrowing it
Nothing to install: this file belongs to strvcom/flutter-template. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/strvcom/flutter-template/master/.agents/skills/spec-feature/SKILL.mdgit clone --depth 1 https://github.com/strvcom/flutter-templateWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/strvcom/flutter-template/spec-feature)<a href="https://agentmods.dev/skills/strvcom/flutter-template/spec-feature"><img src="https://agentmods.dev/badge/skills/strvcom/flutter-template/spec-feature/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/strvcom/flutter-template/spec-feature"><img src="https://agentmods.dev/badge/skills/strvcom/flutter-template/spec-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00071 | $0.01209 |
| Opus 5.5 | $0.00028 | $0.00484 |
| Sonnet 5.5 | $0.00014 | $0.00242 |
| Haiku 4.5 | $0.00007 | $0.00121 |
Grade A, and why
spec-feature scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flutter Template Spec Feature
Single entry point that runs the full feature specification pipeline from idea to implementation-ready tasks. It is designed to be invoked once; each sub-skill may pause for user input during its mandatory clarification steps — that is intentional and correct. After each sub-skill finishes, this orchestrator automatically invokes the next phase without requiring the user to type the next command.
Use this when you want to go from a feature idea directly to a full task breakdown, without
manually running /prd, /techspec, and /tasks in sequence.
Prerequisites
- No existing
prd.mdortechspec.mdfor this feature (or the user has confirmed it is safe to overwrite). - The user can answer clarification questions — both
prdandtechspechave mandatory interactive clarification steps that will pause the pipeline for user input.
If a PRD and tech spec already exist and are complete, use /start-job [feature-name] instead.
Arguments
Accepts an optional feature name. If provided, pass it to each sub-skill so they can pre-fill
the folder name and skip asking. If omitted, the prd sub-skill will determine the feature name
during its workflow.
Pipeline
Run each phase in order. Between phases, do NOT ask for user approval — the sub-skills themselves handle all necessary user interaction. If a phase fails hard (the sub-skill reports an unrecoverable error), stop and surface it to the user.
Critical orchestration rule: when a sub-skill returns control, do not treat its output as the end of your turn. You are still inside this
/spec-featureorchestrator. Immediately invoke the next phase's skill in the same response. The only valid stops are: (a) a sub-skill's mandatory clarification pause (which is correct — wait for the user, then resume), (b) a hard failure, or (c) the Final Report after Phase 3.
Phase 1 — Product Requirements Document
Invoke the prd skill (pass the feature name argument if provided).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 108 lines · 71 tokens per session scan A 83379ae0e709
spec-feature is a skill published in the GitHub repository strvcom/flutter-template (24 stars, last pushed 4mo ago), licensed MIT. It adds 71 tokens to every session and 1,209 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
spec-feature compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| spec-featurestrvcom/flutter-template | Skill | 24 | 4mo ago | MIT | A | 71 | Claude Code |
| orca-emulator-androidstablyai/orca | Skill | 117k | yesterday | MIT | A | 102 | Claude Code, Codex |
| glance-canonical-layoutsandroid/skills | Skill | 10k | yesterday | Apache-2.0 | A | 56 | Claude Code |
| android-tombstone-symbolicationdotnet/skills | Skill | 5.8k | yesterday | MIT | A | 176 | Claude Code |
| dogfoodcallstack/agent-device | Skill | 5.3k | yesterday | MIT | A | 55 | Claude Code |
| winapp-mauimicrosoft/winappCli | Skill | 1.4k | yesterday | MIT | A | 68 | Claude Code |
| app_remixrome-os/rome | Skill | 889 | yesterday | MIT | A | 50 | Claude Code, Codex |