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 chordee/houdini-tools --skill houdini-locatorgit clone --depth 1 https://github.com/chordee/houdini-toolsWrote 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/chordee/houdini-tools/houdini-locator)<a href="https://agentmods.dev/skills/chordee/houdini-tools/houdini-locator"><img src="https://agentmods.dev/badge/skills/chordee/houdini-tools/houdini-locator/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/chordee/houdini-tools/houdini-locator"><img src="https://agentmods.dev/badge/skills/chordee/houdini-tools/houdini-locator.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00081 | $0.00688 |
| Opus 5 | $0.00041 | $0.00344 |
| Sonnet 5 | $0.00016 | $0.00138 |
| Haiku 4.5 | $0.00008 | $0.00069 |
Grade A, and why
houdini-locator 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 10d 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 — 43 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Houdini Locator
This skill provides a reliable way to find all Houdini installation paths without depending on Houdini itself.
Lookup priority
HFSenvironment variable — if set andbin/hython(.exe)exists under it, that install is reported first under the[Source: HFS env var]header. IfHFSis set but invalid, a one-line warning is printed and the scan continues.- Standard install directory scan — Windows:
C:\Program Files\Side Effects Software\Houdini *; Linux:/opt/hfs*. Installs already reported viaHFSare de-duplicated out of this section. - PATH search (Linux only) —
which -a hythonandwhich -a houdinifxare appended for visibility.
Workflow
1. Run the Detection Script
The detection script lives in the scripts/ subdirectory next to this SKILL.md. Resolve its absolute path from wherever you loaded this skill from on disk, then invoke the file appropriate for the current OS:
- Windows —
scripts/find-houdini.ps1, invoked with PowerShell:powershell -ExecutionPolicy Bypass -File "<skill-dir>/scripts/find-houdini.ps1" - Linux —
scripts/find-houdini.sh, invoked with bash:bash <skill-dir>/scripts/find-houdini.sh
Replace <skill-dir> with the absolute filesystem path of the directory holding this SKILL.md.
2. Parse the Results
Analyze the output to identify:
- Source marker: an entry prefixed with
[Source: HFS env var]is the user's explicitly chosen install and should win over scan results when picking a default. - Version number: parsed from the folder basename (
Houdini 20.5.332→20.5.332,hfs20.5.332→20.5.332). For anHFSpointing at a non-standard folder name, version may be reported as(unknown version)— the install path andhythonpath are still authoritative. - Install root: the full installation path for each version.
- Main executables: full paths to
hython,houdini(Windows) orhoudinifx(Linux).
3. Usage Recommendations
- Direct execution: Prefer using the full path to
hythonto avoid environment conflicts. - Multiple versions: Prefer the
HFS-sourced entry if present; otherwise pick the latest or by requirement.
What ships with it
2 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.
- 10d ago First seen · 43 lines · 81 tokens per session scan A c5912e32ec73
houdini-locator is a skill published in the GitHub repository chordee/houdini-tools (5 stars, last pushed 12d ago), licensed MIT. It adds 81 tokens to every session and 688 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 2026-08-31.
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