github/spec-kit-copilot is a repository of GitHub Copilot integrations for Spec Kit, a toolkit for developing software through a structured specification-first workflow. It provides Copilot-specific commands, skills, canvases, and related workflow components for users of the Copilot CLI, Copilot App, and VS Code.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/github/spec-kit-copilotWrote 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/commands/github/spec-kit-copilot/speckit.checklist)<a href="https://agentmods.dev/commands/github/spec-kit-copilot/speckit.checklist"><img src="https://agentmods.dev/badge/commands/github/spec-kit-copilot/speckit.checklist/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/commands/github/spec-kit-copilot/speckit.checklist"><img src="https://agentmods.dev/badge/commands/github/spec-kit-copilot/speckit.checklist.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 | $0.00000 | $0.00247 |
| Opus 5.5 | $0.00000 | $0.00099 |
| Sonnet 5.5 | $0.00000 | $0.00049 |
| Haiku 4.5 | $0.00000 | $0.00025 |
Grade A, and why
speckit.checklist 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 1mo 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.
What it actually says
Sub-Agent Delegation
When executing this command, delegate independent work to parallel sub-agents to reduce total execution time.
How to dispatch sub-agents in Copilot:
- VS Code: Use the
runSubagenttool to spawn each sub-agent in an isolated context. - CLI: Delegate to a sub-agent process — Copilot CLI automatically manages subsidiary sub-agent execution. You can also target custom agents defined in
.github/agents/or~/.copilot/agents/.
Feature Context Loading in Parallel
When loading feature context (step 4), dispatch parallel reads:
-
Sub-agent: Spec analysis — "Read spec.md at {FEATURE_DIR}/spec.md. Extract requirements, user stories, edge cases, and non-functional attributes relevant to the checklist domain: '{domain}'. Return a structured summary focused on requirement quality signals."
-
Sub-agent: Plan and tasks analysis — "Read plan.md and tasks.md at {FEATURE_DIR}/ (if they exist). Extract technical details, dependencies, and implementation tasks relevant to the checklist domain: '{domain}'. Return a structured summary."
Use the consolidated results to generate higher-quality, context-aware checklist items.
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.
- 1mo ago First seen · 19 lines · 0 tokens per session scan A 03df1864eada
speckit.checklist is a command published in the GitHub repository github/spec-kit-copilot (17 stars, last pushed 11d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 247 tokens. 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.
Other commands, from other repositories
sdd-reverse-specify
Reverse specification — reconstruct existing behaviour from code, tests or a plan into a human-validated Baseline spec. Resumable.
sddp-prd
Command description: Create or refine the canonical product document. Argument hint: [rough product idea, users, domain, or market opportunity] Command category: project-bootstrap Prerequisites: none.
sddp-specify
Command description: Create a feature specification from a feature description. Argument hint: [feature description] Command category: feature-delivery Prerequisites: project-instructions.
sddp-systemdesign
Command description: Create or refine the canonical software architecture document. Argument hint: [project description, docs, constraints, or architecture inputs] Command category: project-bootstrap Prerequisites: none.
sddp-implement
Command description: Implement the current feature tasks. Argument hint: [optional: phase or task to start from] Command category: feature-delivery Prerequisites: spec, plan, tasks, checklists:complete-if-present.
epic-plan
Run /epic-plan — see .claude/commands/epic-plan.md for the authoritative spec.