implement

implement is a command for Claude Code from infraspecdev/tesseract. It costs 11 tokens per session (624 once invoked), scanned A, original, MIT.

A command that implements a planned feature using test-driven development (TDD), meaning tests are written or confirmed as part of the build process, with progress tracked against the plan.

In plain words
What is it for?
Use it to start work on a feature or story, confirm its acceptance criteria, update the plan, and promote completed low-level design drafts into the project’s documentation.
Why use it?
It turns an approved feature plan into tracked implementation work and keeps story status up to date as steps are completed.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the shield plugin — 36 skills, 17 commands, 22 agents shipped together

Good fit Use it to start work on a feature or story, confirm its acceptance criteria, update the plan, and promote completed low-level design drafts into the project’s documentation.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/infraspecdev/tesseract/implement
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/infraspecdev/tesseract

Made for: Claude Code.

Or install shield, the plugin that ships this one along with the rest of its 36 skills, 17 commands, 22 agents.

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.

agentmods badge for implement

README.md
[![agentmods](https://agentmods.dev/badge/commands/infraspecdev/tesseract/implement/github.svg)](https://agentmods.dev/commands/infraspecdev/tesseract/implement)
Your own site
<a href="https://agentmods.dev/commands/infraspecdev/tesseract/implement"><img src="https://agentmods.dev/badge/commands/infraspecdev/tesseract/implement/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.

agentmods 80×15 button for implement

Your own site · 80×15
<a href="https://agentmods.dev/commands/infraspecdev/tesseract/implement"><img src="https://agentmods.dev/badge/commands/infraspecdev/tesseract/implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 624 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 $0.00011 $0.00624
Opus 5.5 $0.00004 $0.00250
Sonnet 5.5 $0.00002 $0.00125
Haiku 4.5 $0.00001 $0.00062

Measured 1mo ago against content hash 883943be19e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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.

shield/commands/implement.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implement

Start implementing a feature using test-driven development with progress tracking.

Usage

/implement [feature or story ID]

Paths

This command mutates {plan_json} = {output_dir}/{feature}/plan.json in place as steps complete. On milestone close (step 5h), it also promotes feature-folder LLD drafts to the canonical docs/lld/{component}.md location (registry: lld_canonical_md).

Registry key Resolved path When written
plan_json {output_dir}/{feature}/plan.json Mutated in place on every story-status change
lld_canonical_md docs/lld/{component}.md Promoted from {output_dir}/{feature}/lld-{component}.md at milestone close (step 5h)

Behavior

  1. If a story ID is provided (e.g., EPIC-1-S1), search all plans in {output_dir}/*/plan.json for the story
  2. If a feature description is provided, use it as the starting context
  3. If nothing provided, ask what the user wants to implement

Acceptance Criteria Confirmation

  1. If story context exists (from sidecar or PM tool):
    • Present acceptance criteria to the user
    • Ask to confirm, edit, or skip
    • If edited, update {plan_json} and re-render {plan_html} from the updated {plan_md} (via the /plan rendering flow)

Implementation

  1. Follow the shield:implement-feature skill workflow:
    • TDD: write failing tests, implement, per-step review
    • Commit after each step
    • Update story status in {plan_json} = {output_dir}/{feature}/plan.json
  2. On the story close that completes a milestone, promote each LLD draft listed in plan.json milestones[<M>].touches_lld[] from docs/shield/{feature}/lld-{component}.md to docs/lld/{component}.md. This includes a fork-drift concurrency check, §14 Changelog row append, atomic rename, and design_refs[] anchor back-fill. See step 5h in shield:implement-feature/SKILL.md for the full procedure and the just-in-time auto-heal rules.
  3. If superpowers is available, delegate TDD to superpowers:test-driven-development
  4. After all steps complete, invoke shield:summarize

Read the full file on GitHub · 59 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. 1mo ago First seen · 59 lines · 11 tokens per session scan A 883943be19e1

Subscribe to this mod's changes

implement is a command published in the GitHub repository infraspecdev/tesseract (5 stars, last pushed 3mo ago), licensed MIT. It adds 11 tokens to every session and 624 once invoked, about $0.0000 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 2026-09-03.