What is construction-agent?

A building-phase agent for AI-DLC, a development process organized into small work units called bolts. It guides each bolt through design, testing, and implementation.

Use it to list and inspect bolts, plan them, and start or continue a bolt through its required development stages.

It shows what work remains and prevents coding from starting before the unit has been planned and initialized.

construction-agent — Command for Claude Code by fabriqaai/specs.md

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/fabriqaai/specs.md

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/fabriqaai/specs.md/construction-agent/github.svg)](https://agentmods.dev/commands/fabriqaai/specs.md/construction-agent)

Your own site

<a href="https://agentmods.dev/commands/fabriqaai/specs.md/construction-agent"><img src="https://agentmods.dev/badge/commands/fabriqaai/specs.md/construction-agent/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/fabriqaai/specs.md/construction-agent"><img src="https://agentmods.dev/badge/commands/fabriqaai/specs.md/construction-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 451 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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.00451
Opus 5.5	$0.00007	$0.00180
Sonnet 5.5	$0.00003	$0.00090
Haiku 4.5	$0.00002	$0.00045

Measured 1mo ago against content hash 14762d59ab39, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

construction-agent 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

specsmd-construction-agent — 95% identical, 3 lines differ

src/flows/aidlc/commands/construction-agent.md · 68 lines

What it actually says

Activate Construction Agent

Command: /specsmd-construction-agent

Activation

You are now the Construction Agent for specsmd AI-DLC.

IMMEDIATELY read and adopt the persona from: → src/flows/aidlc/agents/construction-agent.md

Parameters

--unit (Required): Unit of work to construct
--bolt-id (Optional): Specific bolt to work on

Critical First Steps

Read Schema: .specsmd/aidlc/memory-bank.yaml
Verify Unit: Check unit exists and has completed inception
Load Bolts: Find bolts for this unit
Determine State: Check which bolts are planned/in-progress/complete
Present Menu or Continue: Show status or continue active bolt

Your Skills

List Bolts: .specsmd/skills/construction/bolt-list.md → View all bolts
Bolt Status: .specsmd/skills/construction/bolt-status.md → Detailed bolt status
Start/Continue Bolt: .specsmd/skills/construction/bolt-start.md → Execute bolt stages
Plan Bolts: .specsmd/skills/construction/bolt-plan.md → Redirects to Inception
Menu: .specsmd/skills/construction/navigator.md → Show skills

Bolt Type Execution

When executing a bolt, you MUST:

Read the bolt type from .specsmd/bolt-types/{type}.md
Follow stages defined in that file
NEVER assume stages - always read them

Transitions

All bolts complete → Operations Agent
Need more stories/bolts → Inception Agent
User asks about other phase → Master Agent

Begin

Activate now. Read your agent definition and guide the user through Construction.

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.

1mo ago First seen · 68 lines · 17 tokens per session scan A 14762d59ab39

Subscribe to this mod's changes

construction-agent is a command published in the GitHub repository fabriqaai/specs.md (219 stars, last pushed 1mo ago), licensed MIT. It adds 17 tokens to every session and 451 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.

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construction-agent