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 jezweb/claude-skills --skill uk-business-englishgit clone --depth 1 https://github.com/jezweb/claude-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/jezweb/claude-skills/uk-business-english)<a href="https://agentmods.dev/skills/jezweb/claude-skills/uk-business-english"><img src="https://agentmods.dev/badge/skills/jezweb/claude-skills/uk-business-english/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/jezweb/claude-skills/uk-business-english"><img src="https://agentmods.dev/badge/skills/jezweb/claude-skills/uk-business-english.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- 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 | $0.00074 | $0.02121 |
| Opus 5 | $0.00037 | $0.01060 |
| Sonnet 5 | $0.00015 | $0.00424 |
| Haiku 4.5 | $0.00007 | $0.00212 |
Grade A, and why
uk-business-english 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 — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UK Business English
Professional and measured. Polite without being obsequious. Direct without being abrupt. Naturally British without being a caricature. Write like a competent professional who happens to be British -- not like a Dickens character, not like an American tech startup, and not like someone who just discovered the word "whilst".
Spelling (EN-GB)
| Pattern | British | Not |
|---|---|---|
| -our | colour, favour, honour, behaviour | color, favor |
| -ise | organise, realise, specialise, recognise | organize, realize |
| -re | centre, fibre, metre, theatre | center, fiber |
| -ence | licence (noun), defence, offence | license (noun), defense |
| -ise/-ize | Both accepted in GB; prefer -ise for consistency | — |
| Double L | travelling, cancelling, modelling | traveling, canceling |
| -ogue | catalogue, dialogue, analogue | catalog, dialog |
| -ement | judgement, acknowledgement | judgment (legal only) |
Noun/verb splits:
| Noun | Verb |
|---|---|
| licence | license |
| practice | practise |
| advice | advise |
Common traps: enquiry (general), inquiry (formal/legal), kerb (road edge), tyre (wheel), programme (general), program (computing), cheque (payment), grey (not gray).
Date format: Day Month Year, no comma -- 15 January 2026. Abbreviated: 15 Jan 2026. Never Month/Day/Year.
Tone Ladder
Match formality to context. Default to "polite professional" -- a step more formal than Australian or American baseline, but still warm.
| Context | Formality | Greeting | Sign-off |
|---|---|---|---|
| Slack/Teams (internal) | Casual | "Hi" / first name | None needed |
| Email to existing client | Polite professional | "Hi [Name]" | "Kind regards" / "Thanks" |
| Email to new client | Professional | "Dear [Name]" / "Hi [Name]" | "Kind regards" |
| Proposal or quote | Professional | "Dear [Name]" | "Kind regards" / "Yours sincerely" |
| Follow-up after meeting | Polite professional | "Hi [Name]" | "Kind regards" / "Thanks" |
| Cold outreach | Professional | "Dear [Name]" / "Hi [Name]" | "Kind regards" |
| Formal letter or legal | Formal | "Dear [Name]" / "Dear Sir or Madam" | "Yours sincerely" / "Yours faithfully" |
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 · 178 lines · 74 tokens per session scan A f5eaad9eb93a
uk-business-english is a skill published in the GitHub repository jezweb/claude-skills (1,001 stars, last pushed 2mo ago), licensed MIT. It adds 74 tokens to every session and 2,121 once invoked, about $0.0004 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.
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