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 terrylica/cc-skills --skill ascii-diagram-validatorgit clone --depth 1 https://github.com/terrylica/cc-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/terrylica/cc-skills/ascii-diagram-validator)<a href="https://agentmods.dev/skills/terrylica/cc-skills/ascii-diagram-validator"><img src="https://agentmods.dev/badge/skills/terrylica/cc-skills/ascii-diagram-validator/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/terrylica/cc-skills/ascii-diagram-validator"><img src="https://agentmods.dev/badge/skills/terrylica/cc-skills/ascii-diagram-validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Rogue Agent · line 182 Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
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 | $0.00028 | $0.01617 |
| Opus 5.5 | $0.00011 | $0.00647 |
| Sonnet 5.5 | $0.00006 | $0.00323 |
| Haiku 4.5 | $0.00003 | $0.00162 |
Grade A, and why
ascii-diagram-validator 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 — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ASCII Diagram Validator
Validate and fix alignment issues in ASCII box-drawing diagrams commonly used in architecture documentation, README files, and code comments.
Self-Evolving Skill: This skill improves through use. If instructions are wrong, parameters drifted, or a workaround was needed — fix this file immediately, don't defer. Only update for real, reproducible issues.
Overview
ASCII diagrams using box-drawing characters (─│┌┐└┘├┤┬┴┼ and double-line variants ═║╔╗╚╝╠╣╦╩╬) require precise column alignment. This skill provides:
- Validation script - Detects misaligned characters with file:line:column locations
- Actionable fixes - Specific suggestions for correcting each issue
- Multi-file support - Validate individual files or entire directories
When to Use This Skill
Invoke when:
- Creating or editing ASCII architecture diagrams in markdown
- Reviewing documentation with box-drawing diagrams
- Fixing "diagram looks wrong" complaints
- Before committing docs/ARCHITECTURE.md or similar files
- When user mentions "ASCII alignment", "diagram alignment", or "box drawing"
Supported Characters
Single-Line Box Drawing
Corners: ┌ ┐ └ ┘
Lines: ─ │
T-joins: ├ ┤ ┬ ┴
Cross: ┼
Double-Line Box Drawing
Corners: ╔ ╗ ╚ ╝
Lines: ═ ║
T-joins: ╠ ╣ ╦ ╩
Cross: ╬
Mixed (Double-Single)
╞ ╟ ╤ ╧ ╪ ╫
Quick Start
Validate a Single File
/usr/bin/env bash << 'PREFLIGHT_EOF'
uv run "$(cc-plugin-root doc-tools)/skills/ascii-diagram-validator/scripts/check_ascii_alignment.py" docs/ARCHITECTURE.md
PREFLIGHT_EOF
Validate Multiple Files
/usr/bin/env bash << 'PREFLIGHT_EOF_2'
uv run "$(cc-plugin-root doc-tools)/skills/ascii-diagram-validator/scripts/check_ascii_alignment.py" docs/*.md
PREFLIGHT_EOF_2
Validate Directory
/usr/bin/env bash << 'PREFLIGHT_EOF_3'
uv run "$(cc-plugin-root doc-tools)/skills/ascii-diagram-validator/scripts/check_ascii_alignment.py" docs/
PREFLIGHT_EOF_3
What ships with it
4 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.
- 1mo ago First seen · 185 lines · 28 tokens per session scan A 062c9a361b3c
ascii-diagram-validator is a skill published in the GitHub repository terrylica/cc-skills (1 stars, last pushed today), licensed MIT. It adds 28 tokens to every session and 1,617 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 2026-09-05.
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