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 nikhilreddy3888/public-api-toolkit --skill mac_vendorgit clone --depth 1 https://github.com/nikhilreddy3888/public-api-toolkitWrote 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/nikhilreddy3888/public-api-toolkit/mac_vendor)<a href="https://agentmods.dev/skills/nikhilreddy3888/public-api-toolkit/mac_vendor"><img src="https://agentmods.dev/badge/skills/nikhilreddy3888/public-api-toolkit/mac_vendor/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/nikhilreddy3888/public-api-toolkit/mac_vendor"><img src="https://agentmods.dev/badge/skills/nikhilreddy3888/public-api-toolkit/mac_vendor.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 | $0.00027 | $0.00295 |
| Opus 5 | $0.00014 | $0.00148 |
| Sonnet 5 | $0.00005 | $0.00059 |
| Haiku 4.5 | $0.00003 | $0.00030 |
Grade A, and why
mac_vendor 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.
What it actually says
MAC Vendor
Lookup hardware vendor from MAC address.
APIs
macvendors.com
- Endpoint:
https://api.macvendors.com/v1/{mac} - Method: GET
- Auth: None (1000 requests/day free)
- Docs: https://app.macvendors.com/
macaddress.io
- Endpoint:
https://api.macaddress.io/v1 - Method: GET
- Auth: API key required (free tier: 100/day)
- Docs: https://macaddress.io/api
Example Queries
- "What vendor is MAC address 00:1A:2B:3C:4D:5E"
- "Who made this network device"
- "Find vendor for AA:BB:CC:DD:EE:FF"
Response
{
"vendor": "Apple, Inc.",
"company": "Apple Computer, Inc.",
"address": "1 Infinite Loop, Cupertino, CA"
}
Use Cases
- Network device identification
- Security monitoring
- Device inventory management
- Virtual machine detection
Token Savings
15-25x vs LLM reasoning for hardware vendor lookup.
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 · 51 lines · 27 tokens per session scan A 91a92dab139c
mac_vendor is a skill published in the GitHub repository nikhilreddy3888/public-api-toolkit (2 stars, last pushed 4mo ago), licensed MIT. It adds 27 tokens to every session and 295 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 2026-08-31.
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