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 fusedio/fused-render --skill fused-render-custom-templatesgit clone --depth 1 https://github.com/fusedio/fused-renderWrote 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/fusedio/fused-render/fused-render-custom-templates)<a href="https://agentmods.dev/skills/fusedio/fused-render/fused-render-custom-templates"><img src="https://agentmods.dev/badge/skills/fusedio/fused-render/fused-render-custom-templates.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
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 →
- medium Rogue Agent · line 42 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00026 | $0.00982 |
| Opus 5 | $0.00013 | $0.00491 |
| Sonnet 5 | $0.00005 | $0.00196 |
| Haiku 4.5 | $0.00003 | $0.00098 |
Grade A, and why
fused-render-custom-templates scanned grade A with 1 finding 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 3d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
Templates run on every open, server privileges, inside packaged app. Readers/conditions: no `subprocess`/`os.system`/system binaries — bundled libraries in-process only (list in `fused-render-authoring`; more → folder py 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.
Custom preview templates
Each extension resolves to ordered mode list (first = default; >1 shows switcher). This skill = registration only. Writing template.html/reader .py → fused-render-authoring (its "Preview templates" section IS a custom template). "Template" that's really long-running server → fused-render-background-apps.
Layout
~/.fused-render/templates/
├── registry.json extension → mode list
└── <name>/ folder name IS public name (registry ref, _mode value)
├── template.html required entry point
├── reader.py optional siblings, referenced relatively
├── condition.py optional per-file gate
└── icon.svg optional switcher icon (monochrome, currentColor, square, legible 16px)
Name resolution: user folder wins, else built-in — resolved from staged copy ~/.fused-render/.core-templates/<name>/ (packaged fused_render/templates/ tree copied there at server startup; repo tree is source only). Naming after built-in shadows it deliberately (built-in names = every staged folder with template.html; also Templates → Library). Folder names: single segment, no dots, no leading _. Folder without registry entry = inert draft.
registry.json
Flat object; same key grammar as built-in fused_render/templates/registry.json. Values: list of names (full ordered mode list — replace semantics, no merge; re-list built-in modes you keep), string (single-mode shorthand), or null/[] (disable templating for extension).
- Keys: dot-anchored suffix patterns, case-insensitive, most-specific wins (
.tar.gz>.gz; literal >*at equal length).*= exactly one whole segment. Trailing/binds directory (.zarr/). Any extension allowed,.htmlincluded (rebind["code", "_render"]→ source becomes default). _-prefixed names = shell sentinels; referenceable:_render,_listing. Other_nameinvalid → dropped,template_errorset, rest of list works.- Any registry key beats built-in table. Re-read every file open — no restart.
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.
- 3d ago Changed · -68 lines · -34 tokens per session d224893346e5
- 7d ago First seen · 123 lines · 60 tokens per session scan A 83d0ea876de4
fused-render-custom-templates is a skill published in the GitHub repository fusedio/fused-render (11 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 982 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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