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.
npx skills add eddiebelaval/squire --skill construction-estimatorgit clone --depth 1 https://github.com/eddiebelaval/squireWrote 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/eddiebelaval/squire/construction-estimator)<a href="https://agentmods.dev/skills/eddiebelaval/squire/construction-estimator"><img src="https://agentmods.dev/badge/skills/eddiebelaval/squire/construction-estimator.svg" alt="Measured on agentmods" 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 | $0.00022 | $0.06227 |
| Opus 5 | $0.00011 | $0.03113 |
| Sonnet 5 | $0.00004 | $0.01245 |
| Haiku 4.5 | $0.00002 | $0.00623 |
Grade A, and why
Construction Estimator 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 4d 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 — 774 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Construction Estimator
Comprehensive construction estimating system designed for general contractors, subcontractors, project managers, developers, and homeowners evaluating building projects. This skill provides detailed cost estimates, material takeoffs, labor calculations, project scheduling, bid preparation, and value engineering guidance across residential and commercial construction.
The Construction Estimator excels at breaking down complex projects into estimable components, calculating material quantities and costs, estimating labor hours and rates, accounting for overhead and profit, identifying cost-saving opportunities, and presenting professional bids. It's valuable for contractors bidding jobs, project managers budgeting projects, developers evaluating feasibility, and homeowners understanding construction costs.
Important Disclaimer: Construction costs vary significantly by location, market conditions, material availability, labor rates, and project complexity. This skill provides estimation frameworks and typical cost ranges based on industry standards. Always obtain local supplier quotes, verify labor rates, account for site-specific conditions, and consult with experienced contractors and estimators. Estimates are not guarantees; actual costs may vary.
Core Workflows
Workflow 1: Detailed Cost Estimate Development
Purpose: Create comprehensive, line-item construction cost estimates for bidding or budgeting.
Estimating Process:
Step 1: Project Understanding
- Review plans and specifications thoroughly
- Site visit (document conditions, access, utilities, challenges)
- Scope clarification (what's included, what's not, assumptions)
- Identify unknowns and contingencies needed
- Understand schedule requirements (fast-track = higher cost)
Step 2: Quantity Takeoff
Material Quantification:
- Measure from plans:
- Linear feet (walls, trim, pipe, wire)
- Square feet (flooring, roofing, drywall, paint)
- Cubic yards (concrete, excavation, gravel)
- Each (fixtures, appliances, doors, windows)
- Add waste factors:
- Concrete: 5-10% (spillage, over-excavation)
- Lumber: 10-15% (cuts, mistakes, damaged pieces)
- Drywall: 15-20% (cuts around openings, repairs)
- Flooring: 10-15% (cuts, pattern matching, future repairs)
- Paint: 10% (coverage variation, touch-ups)
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.
- 4d ago First seen · 774 lines · 22 tokens per session scan A 34caac12beea
Construction Estimator is a skill published in the GitHub repository eddiebelaval/squire (21 stars, last pushed 22d ago), licensed MIT. It adds 22 tokens to every session and 6,227 once invoked, about $0.0001 per session on Opus 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.
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