add-path-type-assertions-or-realpath-resolve-calls-in-path-joini

add-path-type-assertions-or-realpath-resolve-calls-in-path-joini is a skill for OpenCode from ZaxbyHub/opencode-swarm. It costs 35 tokens per session (312 once invoked), scanned A, original, MIT.

A coding rule for safely handling filesystem paths when joining or resolving them. It checks that paths are absolute and confirms what kind of path they refer to.

In plain words
What is it for?
Use it when updating utilities that call Node.js path functions such as path.join, path.resolve, or realpath, and when adding related tests.
Why use it?
It helps prevent incorrect or unsafe file locations caused by relative paths or unexpected path types. It also makes tests use clear, fixed file locations.

Skill for OpenCode

Written for OpenCode: installed under .opencode/. Also seen: mentions OpenCode.

Good fit Use it when updating utilities that call Node.js path functions such as path.join, path.resolve, or realpath, and when adding related tests.

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Install with agentmods
npx agentmods add skills/zaxbyhub/opencode-swarm/add-path-type-assertions-or-realpath-resolve-calls-in-path-joini
Install

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.

Any agent
npx skills add ZaxbyHub/opencode-swarm --skill add-path-type-assertions-or-realpath-resolve-calls-in-path-joini
Clone the repo
git clone --depth 1 https://github.com/ZaxbyHub/opencode-swarm

Made for: OpenCode.

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/zaxbyhub/opencode-swarm/add-path-type-assertions-or-realpath-resolve-calls-in-path-joini"><img src="https://agentmods.dev/badge/skills/zaxbyhub/opencode-swarm/add-path-type-assertions-or-realpath-resolve-calls-in-path-joini.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 312 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.00312
Opus 5 $0.00017 $0.00156
Sonnet 5 $0.00007 $0.00062
Haiku 4.5 $0.00003 $0.00031

Measured 11d ago against content hash aa87f11004bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

add-path-type-assertions-or-realpath-resolve-calls-in-path-joini 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 11d 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.

.opencode/skills/generated/add-path-type-assertions-or-realpath-resolve-calls-in-path-joini/SKILL.md · 51 lines

What it actually says

Add path-type assertions or realpath/resolve calls in path-joining utility functions

Trigger

  • path.join
  • realpath
  • fs path

Required Procedure

  • Add path-type assertions or realpath/resolve calls in path-joining utility functions
  • Use absolute paths in test fixture creation

Forbidden Shortcuts

  • (none recorded)

Delegation Template

When delegating a task affected by this skill, include:

SKILLS: file:.opencode/skills/generated/add-path-type-assertions-or-realpath-resolve-calls-in-path-joini/SKILL.md

Reviewer Checks

  • Verify all path.join / path.resolve calls are preceded by absoluteness checks or resolution

Test Engineer Checks

  • Add or update tests covering the trigger condition and the forbidden shortcut.
Files

What ships with it

1 file 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.

Changes

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.

  1. 11d ago First seen · 51 lines · 35 tokens per session scan A aa87f11004bf

Subscribe to this mod's changes

add-path-type-assertions-or-realpath-resolve-calls-in-path-joini is a skill published in the GitHub repository ZaxbyHub/opencode-swarm (466 stars, last pushed yesterday), licensed MIT. It adds 35 tokens to every session and 312 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 2026-08-30.