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 x3allamerican/skills --skill csa-basic-threshold-differencesgit clone --depth 1 https://github.com/x3allamerican/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/x3allamerican/skills/csa-basic-threshold-differences)<a href="https://agentmods.dev/skills/x3allamerican/skills/csa-basic-threshold-differences"><img src="https://agentmods.dev/badge/skills/x3allamerican/skills/csa-basic-threshold-differences/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/x3allamerican/skills/csa-basic-threshold-differences"><img src="https://agentmods.dev/badge/skills/x3allamerican/skills/csa-basic-threshold-differences.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 | $0.00045 | $0.00692 |
| Opus 5.5 | $0.00018 | $0.00277 |
| Sonnet 5.5 | $0.00009 | $0.00138 |
| Haiku 4.5 | $0.00005 | $0.00069 |
Grade A, and why
csa-basic-threshold-differences 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.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
BASIC Threshold Differences: General Freight vs Hazmat vs Passenger
The CSA Safety Measurement System (SMS) sets different intervention thresholds depending on what the carrier hauls. Same BASIC score can be alert-level for one carrier and clean for another.
Threshold table
| Carrier type | Unsafe Driving | HOS Compliance | Driver Fitness | Controlled Substances | Vehicle Maintenance | Hazmat Compliance | Crash Indicator |
|---|---|---|---|---|---|---|---|
| General freight | 65th | 65th | 80th | 80th | 80th | N/A | 65th |
| Hazmat carrier | 60th | 60th | 75th | 75th | 75th | 60th | 60th |
| Passenger carrier | 50th | 50th | 65th | 65th | 65th | N/A | 50th |
Why the difference
- Hazmat carriers handle materials that can harm public — tighter safety expected
- Passenger carriers carry humans — tighter safety expected
- General freight is property-only — wider tolerance
What "alert threshold" means
- BASIC at or above the threshold percentile = alert
- Triggers FMCSA intervention prioritization
- Combined with crash history can trigger Compliance Review
How peer groups work
FMCSA assigns each carrier to a peer group based on:
- Number of power units (vehicles)
- Inspection volume
- Time in operation
Peer group = pool of similar carriers. Your BASIC percentile is relative to your peer group.
Implications for owner-operator vs fleet
- 1-truck owner-operator: smaller peer group, more volatile percentile
- 50-truck fleet: larger peer group, more stable percentile
- 100+ truck fleet: largest peer group, most stable
Compass dashboard view
Compass CSA module shows your BASIC scores and the relevant threshold for your carrier type. Alert flags trigger when within 5 percentile points of threshold.
CFR citations
- 49 CFR § 385.4
- FMCSA SMS Methodology
How Compass surfaces this
Searchable in Compass Ask. Runs against the carrier's actual fleet data when invoked from the relevant tracker. Read-only; no actions without explicit user approval.
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 · 62 lines · 45 tokens per session scan A ca1eb909653a
csa-basic-threshold-differences is a skill published in the GitHub repository x3allamerican/skills (3 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 45 tokens to every session and 692 once invoked, about $0.0002 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 2026-08-31.
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