Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
Wrote 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/hackermanishackerman/claude-skills-vault/token-formatter)<a href="https://agentmods.dev/skills/hackermanishackerman/claude-skills-vault/token-formatter"><img src="https://agentmods.dev/badge/skills/hackermanishackerman/claude-skills-vault/token-formatter.svg" alt="Measured on agentmods" 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 | $0.00037 | $0.02755 |
| Opus 5 | $0.00018 | $0.01378 |
| Sonnet 5 | $0.00007 | $0.00551 |
| Haiku 4.5 | $0.00004 | $0.00276 |
Grade A, and why
token-formatter 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 6d 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 — 465 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Token Formatter Skill
Convert verbose documentation, markdown, and text files into token-efficient formats while preserving essential information.
When to Use
Invoke this skill when:
- User wants to reduce token count in documentation
- User needs to compress markdown/text for LLM context
- User asks to optimize content for AI consumption
- Commands:
/token-format,/compress,/toon
Token Reduction Rules
1. Remove Redundancy
Before:
## Introduction
In this document, we will explore and discuss the various different ways
that you can implement authentication in your application. We will cover
multiple approaches and methods that are available to developers.
After:
## Auth Implementation
Methods covered:
- JWT tokens
- Session-based
- OAuth2
2. Use Symbols & Abbreviations
| Verbose | Compressed |
|---|---|
| function | fn |
| return | ret |
| string | str |
| number | num |
| boolean | bool |
| array | arr |
| object | obj |
| parameter | param |
| configuration | config |
| environment | env |
| authentication | auth |
| authorization | authz |
| application | app |
| database | db |
| repository | repo |
| directory | dir |
| reference | ref |
| implementation | impl |
| documentation | docs |
| information | info |
| example | ex |
| required | req |
| optional | opt |
| default | def |
| maximum | max |
| minimum | min |
| and | & |
| or | | |
| with | w/ |
| without | w/o |
| versus | vs |
| approximately | ~ |
| greater than | > |
| less than | < |
| equals | = |
| not equals | != |
| therefore | => |
| because | bc |
3. Compress Lists
Before:
The following features are included:
- User authentication with JWT tokens
- Role-based access control for authorization
- Password hashing using bcrypt algorithm
- Session management with Redis store
- Two-factor authentication support
What ships with it
3 files 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.
- 6d ago First seen · 465 lines · 37 tokens per session scan A fd5b2696597c
token-formatter is a skill published in the GitHub repository hackermanishackerman/claude-skills-vault (2 stars, last pushed today), licensed MIT. It adds 37 tokens to every session and 2,755 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 2026-08-31.
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