OpenClaw Master Skills is a curated, regularly updated collection of skills that extends an AI personal assistant platform with capabilities such as research, browser automation, presentation creation, and prompt work. It is intended for people using OpenClaw or MyClaw.ai to give their agents additional tasks and workflows. The catalogue contains many skills and agents from this collection.
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 LeoYeAI/openclaw-master-skills --skill afrexai-construction-estimatorgit clone --depth 1 https://github.com/LeoYeAI/openclaw-master-skillsWrote 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/leoyeai/openclaw-master-skills/afrexai-construction-estimator)<a href="https://agentmods.dev/skills/leoyeai/openclaw-master-skills/afrexai-construction-estimator"><img src="https://agentmods.dev/badge/skills/leoyeai/openclaw-master-skills/afrexai-construction-estimator/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/skills/leoyeai/openclaw-master-skills/afrexai-construction-estimator"><img src="https://agentmods.dev/badge/skills/leoyeai/openclaw-master-skills/afrexai-construction-estimator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00090 | $0.06832 |
| Opus 5 | $0.00045 | $0.03416 |
| Sonnet 5 | $0.00018 | $0.01366 |
| Haiku 4.5 | $0.00009 | $0.00683 |
Grade A, and why
afrexai-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 9d 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 — 770 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Construction Estimator Pro
Complete construction estimating methodology — from quantity takeoff to bid submission. Zero dependencies.
Phase 1: Project Classification & Estimate Type
Estimate Type Decision Matrix
| Project Stage | Estimate Type | Accuracy | Basis | Use Case |
|---|---|---|---|---|
| Concept | Order of Magnitude | -30% to +50% | SF/unit costs | Go/no-go decisions |
| Schematic | Conceptual/Budget | -15% to +30% | Assembly costs | Budget approval |
| Design Dev | Detailed | -10% to +15% | Quantity takeoff | GMP/bid preparation |
| Construction Docs | Definitive/Bid | -5% to +10% | Full QTO + subs | Lump sum bid |
| Construction | Control | Actual costs | Committed + forecast | Cost management |
Project Brief YAML
project:
name: ""
number: ""
type: residential | commercial | industrial | infrastructure | renovation
delivery: design-bid-build | design-build | CM-at-risk | IPD
location:
city: ""
state: ""
zip: ""
location_factor: 1.00 # RSMeans city cost index / national average
owner: ""
architect: ""
scope:
gross_sf: 0
stories: 0
site_acres: 0
description: ""
schedule:
bid_date: ""
construction_start: ""
substantial_completion: ""
duration_months: 0
estimate:
type: order-of-magnitude | conceptual | detailed | definitive
base_date: "" # Date costs are based on
escalation_rate: 0.04 # Annual construction cost escalation
assumptions:
- ""
exclusions:
- ""
allowances:
- item: ""
amount: 0
Project Type Quick Reference
| Type | Key Considerations | Typical $/SF Range (2024-2026) |
|---|---|---|
| Single Family Residential | Foundation type, finishes grade, energy code | $150-$400/SF |
| Multi-Family | Unit mix, parking ratio, amenities | $200-$450/SF |
| Office (Class A) | Curtain wall, MEP density, TI allowance | $250-$550/SF |
| Retail | Shell vs TI, storefront, grease traps | $150-$350/SF |
| Healthcare/Hospital | Life safety, med gas, shielding | $400-$900/SF |
| K-12 Education | Prevailing wage, hazmat, phasing | $300-$600/SF |
| Warehouse/Distribution | Clear height, slab flatness, dock count | $80-$180/SF |
| Hotel | Star rating drives finish, FF&E budget | $200-$500/SF |
| Infrastructure (road/mile) | Soil conditions, utilities, traffic control | $2M-$10M/mile |
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 770 lines · 90 tokens per session scan A 707c54391d6f
afrexai-construction-estimator is a skill published in the GitHub repository LeoYeAI/openclaw-master-skills (2,141 stars, last pushed 1mo ago), licensed MIT. It adds 90 tokens to every session and 6,832 once invoked, about $0.0005 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.
Other skills, from other repositories
harvest
Agent-callable Harvest tools — track time (log hours, start/stop timers), and manage the projects, clients, contacts, and tasks time is logged against, plus read invoices and account settings. Use when the user wants to log or edit time, manage Harvest projects/clients/tasks, or check what was billed — even if they…
commercial-policy
Use when designing or revising a company's commercial policy — the rules of engagement governing discounts off list price, approver thresholds, exception flows, and the deal framework that Deal Desk and AEs operate under. Covers discount matrix design (ARR band x term length x payment terms x strategic value)…
add-linear
Add Linear channel integration via Chat SDK. Issue comment threads as conversations.
closing-checklist
What's blocking close — maintain the closing checklist with status, critical path, and days to close. Self-updating: ingests new items from diligence findings and schedule builds, tracks status, surfaces what's blocking. Use when user says "closing checklist", "what's left to close", "checklist status", "add to the…
team-management
Use when admin requests creating a team, importing a team, managing team composition, adding/removing workers from a team, or delegating tasks to a Team Leader.
project-participation
Use when you are invited to a Project Room or assigned a task within a multi-worker project. Covers project plan reading, task coordination with other Workers, and git author config.