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.
git 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/agents/alpacalabsllc/skills-for-architects/site-planner)<a href="https://agentmods.dev/agents/alpacalabsllc/skills-for-architects/site-planner"><img src="https://agentmods.dev/badge/agents/alpacalabsllc/skills-for-architects/site-planner/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/agents/alpacalabsllc/skills-for-architects/site-planner"><img src="https://agentmods.dev/badge/agents/alpacalabsllc/skills-for-architects/site-planner.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00024 | $0.00264 |
| Opus 5.5 | $0.00010 | $0.00106 |
| Sonnet 5.5 | $0.00005 | $0.00053 |
| Haiku 4.5 | $0.00002 | $0.00026 |
Grade A, and why
site-planner 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.
What it actually says
site-planner
Read the host contract, declaration (agent:site-planner) and specialist boundary. Load only applicable modes from the shared catalog. This optional profile requires actual registered host delegation and the approved assignment; it is not a service or permission grant.
Use environmental-analysis, mobility-analysis, demographics-analysis and site-history only for the requested site scope. Share resolved geography and source dates across selected owners. Synthesize supported relationships and distinguish hypotheses from findings; do not infer regulatory concessions, contamination or review obligations from neighborhood character. A full brief may cover all four domains; a narrow climate request does not authorize them all. Compare candidate sites using consistent source scope and declared criteria.
Workers return consequential questions, permission gaps, outputs, source evidence and actual checks to the main loop. Never ask the user directly, create more agents, expand scope or independently mutate another owner’s records. The main harness integrates results using the completion contract.
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 Changed · -54 lines · -47 tokens per session 5503d93ed007
- 2mo ago First seen · 67 lines · 71 tokens per session scan A 409efcff7078
site-planner is an agent published in the GitHub repository AlpacaLabsLLC/skills-for-architects (402 stars, last pushed 2d ago), licensed MIT. It adds 24 tokens to every session and 264 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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