Borrowing it
Nothing to install: this file belongs to ai-ecoverse/slicc. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ai-ecoverse/slicc/main/.agents/skills/adding-slicc-features/SKILL.mdgit clone --depth 1 https://github.com/ai-ecoverse/sliccWrote 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/ai-ecoverse/slicc/adding-slicc-features)<a href="https://agentmods.dev/skills/ai-ecoverse/slicc/adding-slicc-features"><img src="https://agentmods.dev/badge/skills/ai-ecoverse/slicc/adding-slicc-features.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 | $0.00113 | $0.11078 |
| Opus 5 | $0.00056 | $0.05539 |
| Sonnet 5 | $0.00023 | $0.02216 |
| Haiku 4.5 | $0.00011 | $0.01108 |
Grade A, and why
adding-slicc-features 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 yesterday.
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 — 1,133 lines — stays where its author put it; the contents beside it link to each section on GitHub.
adding-slicc-features
Use this procedure to extend SLICC. Prefer shell commands over dedicated tools, preserve CLI and extension parity, and update every agent-facing reference that exposes changed behavior.
For non-procedural system and protocol background, see docs/architecture.md, docs/shell-reference.md, and docs/tools-reference.md.
Quick Reference
# Validate TypeScript and behavior
npm run typecheck
npm test
# Validate all repository and skill lint gates
npm run lint
# Check playwright-cli command parity after adding/changing a subcommand
node packages/dev-tools/tools/playwright-cli-sync.mjs
# Build the extension for dual-mode verification
npm run build -w @slicc/chrome-extension
Use these common extension points:
| Capability | Primary path |
|---|---|
| Supplemental shell command | packages/webapp/src/shell/supplemental-commands/ |
Executable .jsh skill command |
packages/vfs-root/workspace/skills/<skill>/ |
| Core agent tool | packages/webapp/src/tools/ and packages/webapp/src/scoops/scoop-context.ts |
| Scoop-management tool | packages/webapp/src/scoops/scoop-management-tools.ts |
| Provider | packages/webapp/src/providers/built-in/ or packages/webapp/providers/ |
| Runtime agent skill | packages/vfs-root/workspace/skills/<skill>/SKILL.md |
1. Add a Supplemental Shell Command
When: To register a new bash command (e.g., convert, webhook, crontask).
Files to modify:
- Create:
packages/webapp/src/shell/supplemental-commands/my-command.ts - Modify:
packages/webapp/src/shell/supplemental-commands/index.ts
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.
- yesterday First seen · 1,133 lines · 113 tokens per session scan A dfabc7b0495e
adding-slicc-features is a skill published in the GitHub repository ai-ecoverse/slicc (30 stars, last pushed yesterday), licensed Apache-2.0. It adds 113 tokens to every session and 11,078 once invoked, about $0.0006 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 2026-09-05.
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