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 ai-ecoverse/slicc --skill package-executiongit 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/package-execution)<a href="https://agentmods.dev/skills/ai-ecoverse/slicc/package-execution"><img src="https://agentmods.dev/badge/skills/ai-ecoverse/slicc/package-execution.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 | $0.00075 | $0.00891 |
| Opus 5 | $0.00037 | $0.00445 |
| Sonnet 5 | $0.00015 | $0.00178 |
| Haiku 4.5 | $0.00007 | $0.00089 |
Grade A, and why
package-execution 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 — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
JavaScript package execution
ipx runs package bins from the nearest installed node_modules; npx is an alias with the same behavior. If no local bin or installed package resolves, it normally installs the requested package and runs its bin.
Before that network install, mapped package names that duplicate SLICC built-ins redirect to the built-in instead. The command exits non-zero and prints an actionable stderr hint naming the built-in and suggesting an invocation with the original arguments. The hint may also include an exact ipk add bootstrap; run that bootstrap first when present, then use the suggested built-in.
Prefer the built-in. To deliberately preserve install-and-run behavior for the npm package, put --force before its name:
npx --force <package> [args...]
ipx --force <package> [args...]
Already-installed packages, locally resolved bins, and unmapped package names keep their normal behavior. Use commands to discover available built-ins instead of maintaining a package mapping here.
Installing and removing packages
ipk install <pkg> (also npm install, npm i, ipk add) installs into <cwd>/node_modules and records the package in the nearest package.json. ipk install -g <pkg> installs into the shared global prefix at /shared/lib/node_modules, records direct dependencies in /shared/lib/package.json, and publishes PATH-visible .jsh delegators under /shared/bin for package bins.
ipk install lodash # local project install
ipk install -g typescript # global install (shared prefix + PATH bin)
npm uninstall -g typescript # remove from global manifest and reconcile tree
npm list -g # list direct global dependencies
npm root -g # print /shared/lib/node_modules
Global bins installed with -g are on the default $PATH via /shared/bin/<name>.jsh delegators — invoke them by bare name from any cwd (delegators run ipx --global <bin> so a same-named local package does not shadow the global install). Local uninstall/list/root work without -g against the cwd package.json.
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 · 55 lines · 75 tokens per session scan A 9922a08b0314
package-execution is a skill published in the GitHub repository ai-ecoverse/slicc (30 stars, last pushed yesterday), licensed Apache-2.0. It adds 75 tokens to every session and 891 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 2026-09-05.
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