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 sideshowroberto/vfx-agent-toolkit --skill seedance-20git clone --depth 1 https://github.com/sideshowroberto/vfx-agent-toolkitWrote 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/sideshowroberto/vfx-agent-toolkit/seedance-20)<a href="https://agentmods.dev/skills/sideshowroberto/vfx-agent-toolkit/seedance-20"><img src="https://agentmods.dev/badge/skills/sideshowroberto/vfx-agent-toolkit/seedance-20/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/sideshowroberto/vfx-agent-toolkit/seedance-20"><img src="https://agentmods.dev/badge/skills/sideshowroberto/vfx-agent-toolkit/seedance-20.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 | $0.00042 | $0.01062 |
| Opus 5.5 | $0.00017 | $0.00425 |
| Sonnet 5.5 | $0.00008 | $0.00212 |
| Haiku 4.5 | $0.00004 | $0.00106 |
Grade A, and why
seedance-20 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 today.
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 — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.
seedance-20
Reference resolution: [ref:<name>] is references/<name>.md in this skill directory (vendored from the upstream seedance-2.0 project, MIT - see ATTRIBUTION.md); [skill:<name>] is the sibling skill of that name in this plugin.
Seedance 2.0 operating loop for agent-directed video work. Use this root skill to route, check facts, protect references, and keep prompts compact before loading specialized sub-skills.
Operating Loop
- Intake: identify the user's goal, production phase, target surface, mode, duration, aspect ratio, references, audio needs, deliverables, and safety/IP risks.
- Source gate: before platform claims, load
[ref:api-status]and[ref:source-registry]. For Runway or Volcengine specifics, also load[ref:platform-surface-matrix]. - Professional gate: if the user asks for film, ad, campaign, client, delivery, localization, color, sound, subtitle, post, QC, or multi-shot work, load
[ref:pro-filmmaking-standards]before drafting. - Mode gate: choose T2V, I2V, V2V, R2V, FLF2V, edit, extend, or troubleshoot before writing prose.
- Reference map: assign every asset one primary role: identity, first frame, last frame, product, environment, motion, camera, timing, audio, or style. State what must not transfer.
- Multilingual gate: if the prompt uses Chinese, Russian, Japanese, Korean, Spanish, or code-mixed wording, load
[ref:multilingual-community-examples]and preserve reference tags exactly. - Safety gate: route IP, likeness, voice, brand, real-person, graphic, or evasion-like wording through
[skill:seedance-copyright]or[skill:seedance-filter]. - Prompt build: route to
[skill:seedance-interview],[skill:seedance-prompt],[skill:seedance-prompt-short], or a domain skill for camera, motion, audio, characters, VFX, style, recipes, or pipeline. - Quality pass: run anti-slop, check one visible beat, one primary camera move, physical light, sound intent, continuity anchors, constraints, delivery caveats, and source-date caveats.
- Repair loop: if output fails, diagnose root cause before adding adjectives; use
[skill:seedance-troubleshoot].
What ships with it
37 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.
- ATTRIBUTION.md 1.1 KB
- references/agent-compatibility.md 3.8 KB
- references/anti-slop-lexicon.md 896 B
- references/api-status.md 6.7 KB
- references/api-workflow.md 4.1 KB
- references/aspect-ratio-delivery.md 2.6 KB
- references/audio-guide.md 3.5 KB
- references/audio-post-delivery.md 2.2 KB
- references/cinematography-shot-language.md 3.3 KB
- references/color-pipeline-aces.md 3.0 KB
- references/community-source-methodology.md 1.6 KB
- references/delivery-qc.md 2.3 KB
- references/eval-rubric.md 430 B
- references/examples-by-mode.md 6.1 KB
- references/field-observed-tips.md 2.3 KB
- references/filter-vocab.md 2.1 KB
- references/first-last-frame-guide.md 3.9 KB
- references/frontend-design-system.md 1.7 KB
- references/genre-guides.md 2.5 KB
- references/i2v-guide.md 1.8 KB
- references/intent-vs-precision.md 447 B
- references/json-schema.md 2.5 KB
- references/LICENSE-upstream.txt 1.1 KB
- references/model-name-map.md 2.7 KB
- references/multilingual-community-examples.md 10 KB
- references/platform-constraints.md 1.2 KB
- references/platform-surface-matrix.md 4.4 KB
- references/pro-filmmaking-standards.md 4.0 KB
- references/progressive-disclosure.md 760 B
- references/prompt-examples.md 13 KB
- references/quick-ref.md 1.8 KB
- references/reference-workflow.md 3.3 KB
- references/research-2026-05-30.md 6.0 KB
- references/shot-list-continuity.md 3.5 KB
- references/source-registry.md 11 KB
- references/storytelling-framework.md 1.6 KB
- references/subtitles-localization.md 2.9 KB
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.
- today First seen · 48 lines · 42 tokens per session scan A 4fea1373d7dc
seedance-20 is a skill published in the GitHub repository sideshowroberto/vfx-agent-toolkit (16 stars, last pushed 22d ago), licensed MIT. It adds 42 tokens to every session and 1,062 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-11-02.
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