speckit.implement

speckit.implement is a command for Claude Code from github/spec-kit-copilot. It costs 14 tokens per session (2,279 once invoked), scanned A, original, MIT.

An implementation command that assigns independent, parallel-safe tasks to separate coding assistants and handles dependent tasks in order.

In plain words
What is it for?
Use it to implement a Spec Kit task list, especially when some tasks can be worked on independently within the same phase.
Why use it?
It helps complete unrelated work concurrently while respecting tasks that depend on earlier changes.

Command for Claude Code ✓ vendor

Written for Claude Code: $ARGUMENTS substitution.

Good fit Use it to implement a Spec Kit task list, especially when some tasks can be worked on independently within the same phase.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/github/spec-kit-copilot/speckit.implement
About the project

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.

github/spec-kit-copilot · 22 stars · on GitHub

Install

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.

Clone the repo
git clone --depth 1 https://github.com/github/spec-kit-copilot

Made for: Claude Code.

Wrote 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.

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README.md
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Your own site
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Your own site · 80×15
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Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,279 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.02279
Opus 5.5 $0.00006 $0.00912
Sonnet 5.5 $0.00003 $0.00456
Haiku 4.5 $0.00001 $0.00228

Measured today against content hash 7658bcbfff7a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

speckit.implement 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 today.

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.

spec-kit-presets/copilot-full-sdd/commands/speckit.implement.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

$ARGUMENTS

You MUST consider the user input before proceeding (if not empty).

Outline

  1. Run {SCRIPT} from repo root and parse FEATURE_DIR and AVAILABLE_DOCS list. All paths must be absolute. For single quotes in args like "I'm Groot", use escape syntax: e.g 'I'''m Groot' (or double-quote if possible: "I'm Groot").

  2. Check checklists status (if FEATURE_DIR/checklists/ exists):

    • Treat checklist markers as a read-only gate: scan checkbox state, report status, and ask before proceeding when needed; do NOT modify checklist files or markers

    • checklists/requirements.md is the built-in spec-quality checklist maintained by __SPECKIT_COMMAND_SPECIFY__ and __SPECKIT_COMMAND_CLARIFY__; custom checklists generated by __SPECKIT_COMMAND_CHECKLIST__ are reviewer-owned requirements-quality review artifacts

    • For custom checklists, [x] means the reviewer determined the requirements-quality criterion is satisfied; it does NOT mean implementation work is complete

    • Scan all checklist files in the checklists/ directory

    • For each checklist, count:

      • Total items: All lines matching - [ ] or - [X] or - [x]
      • Checked items: Lines matching - [X] or - [x]
      • Unchecked items: Lines matching - [ ]
    • Create a status table:

      | Checklist | Total | Checked | Unchecked | Status |
      |-----------|-------|---------|-----------|--------|
      | ux.md     | 12    | 12      | 0         | ✓ PASS |
      | test.md   | 8     | 5       | 3         | ✗ FAIL |
      | security.md | 6   | 6       | 0         | ✓ PASS |
      
    • Calculate overall status:

      • PASS: All checklists have 0 unchecked items
      • FAIL: One or more checklists have unchecked items
    • If any checklist has unchecked items:

      • Display the table with unchecked item counts
      • STOP and ask: "Some checklists have unchecked items. Do you want to proceed with implementation anyway? (yes/no)"
      • Wait for user response before continuing
      • If user says "no" or "wait" or "stop", halt execution
      • If user says "yes" or "proceed" or "continue", proceed to step 3

Read the full file on GitHub · 153 lines

Changes

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.

  1. today Changed · +128 lines · +2 tokens per session 7658bcbfff7a
  2. yesterday Changed · -8 lines · +12 tokens per session 2fc1d21b8438
  3. 1mo ago First seen · 33 lines · 0 tokens per session scan A e53e08198db7

Subscribe to this mod's changes

speckit.implement is a command published in the GitHub repository github/spec-kit-copilot (22 stars, last pushed yesterday), licensed MIT. It adds 14 tokens to every session and 2,279 once invoked, about $0.0001 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.