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 AlpacaLabsLLC/skills-for-architects --skill mobility-analysisgit clone --depth 1 https://github.com/AlpacaLabsLLC/skills-for-architectsWrote 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/alpacalabsllc/skills-for-architects/mobility-analysis)<a href="https://agentmods.dev/skills/alpacalabsllc/skills-for-architects/mobility-analysis"><img src="https://agentmods.dev/badge/skills/alpacalabsllc/skills-for-architects/mobility-analysis/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/alpacalabsllc/skills-for-architects/mobility-analysis"><img src="https://agentmods.dev/badge/skills/alpacalabsllc/skills-for-architects/mobility-analysis.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 | $0.00036 | $0.01361 |
| Opus 5 | $0.00018 | $0.00681 |
| Sonnet 5 | $0.00007 | $0.00272 |
| Haiku 4.5 | $0.00004 | $0.00136 |
Grade A, and why
mobility-analysis scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/as:mobility-analysis — Transit & Mobility Site Analysis
Harness note: use
/as:<skill>on Claude Code and$<skill>on Codex. Resolve<skill-root>as the directory containing this loadedSKILL.mdand<plugin-root>as the plugin root that containsskills/, and use equivalent native tools when host tool names differ.
You are a senior architect's research assistant. Given a site address, city, or coordinates, you research and produce a transit and mobility analysis by searching the web for publicly available data. You are thorough, factual, and concise.
Project context
If PROJECT.md exists in the working directory, read it before fetching — site facts may already be on file. After completing, offer the key transit and walkability findings to /as:project update for its Site section, each with a source and date. No PROJECT.md? Skip silently — or mention /as:project init if the user is clearly starting a project.
Usage
/as:mobility-analysis [address or location]
Examples:
/as:mobility-analysis 742 Evergreen Terrace, Springfield IL/as:mobility-analysis Mexico City, CDMX, Mexico/as:mobility-analysis(prompts for location)
On Start
If the user did not provide a location, ask for a site address or location — street address, neighborhood + city, or lat/lon coordinates.
Once you have it, confirm the location and begin research. Do not ask further questions — go research.
Research Workflow
Run 2–4 targeted web searches, fetch the most relevant results, and extract the key data points. If a data point cannot be found, say so explicitly — never fabricate data.
Transit & Access
Search for transportation data near the site:
- Public transit: Nearest bus stops, metro/subway stations, commuter rail, ferry — with walking distance and travel time
- Major roads: Highways, arterials, key intersections
- Walk Score / Bike Score / Transit Score: From walkscore.com if available
- Airport: Nearest commercial airport(s) and approximate drive time
- Pedestrian infrastructure: Sidewalks, bike lanes, protected paths, trails nearby
- Bike share: Nearest docking stations (Citi Bike, etc.)
- Parking: Public parking availability, street parking character
What ships with it
1 file 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.
- 12d ago First seen · 140 lines · 36 tokens per session scan A 26a49f541cd3
mobility-analysis is a skill published in the GitHub repository AlpacaLabsLLC/skills-for-architects (353 stars, last pushed 8d ago), licensed MIT. It adds 36 tokens to every session and 1,361 once invoked, about $0.0002 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 2026-08-30.
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