What is lottie-motion-builder?

A guide for creating small Lottie animations from assets such as SVGs, logos, icons, or interface states. Lottie is a compact animation format that can run in web and mobile interfaces.

Use it for logo reveals, SVG path animations, loaders, empty states, success states, transitions, and onboarding elements.

It keeps small branded or interface animations suitable for shipping as reusable JSON files. It also defines the inputs and runtime details needed before building the animation.

lottie-motion-builder — Skill for Codex by markoblogo

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 markoblogo/abvx-agent-skills --skill lottie-motion-builder

Clone the repo

git clone --depth 1 https://github.com/markoblogo/abvx-agent-skills

Made for: Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/markoblogo/abvx-agent-skills/lottie-motion-builder/github.svg)](https://agentmods.dev/skills/markoblogo/abvx-agent-skills/lottie-motion-builder)

Your own site

<a href="https://agentmods.dev/skills/markoblogo/abvx-agent-skills/lottie-motion-builder"><img src="https://agentmods.dev/badge/skills/markoblogo/abvx-agent-skills/lottie-motion-builder/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/markoblogo/abvx-agent-skills/lottie-motion-builder"><img src="https://agentmods.dev/badge/skills/markoblogo/abvx-agent-skills/lottie-motion-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 688 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00069	$0.00688
Opus 5	$0.00034	$0.00344
Sonnet 5	$0.00014	$0.00138
Haiku 4.5	$0.00007	$0.00069

Measured 10d ago against content hash 61fa423b49f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

lottie-motion-builder 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/bootstrap_harness.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/lottie-motion-builder/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lottie Motion Builder

Use Lottie for small deployable motion assets, not for full cinematic motion-design work.

Good Fits

SVG path reveal
logo or wordmark animation
loader, empty-state, success-state, and transition animation
small branded motion element for web, mobile, or app onboarding

Do Not Use It For

long character animation
complex scene choreography
vague "make it cool" requests with no asset grounding
motion work that does not need to ship as Lottie JSON

Required Inputs

Before building, lock these down:

source asset: SVG, screenshot, logo, icon, or concrete visual reference;
target surface: landing page, app UI, loader, hero accent, onboarding, etc.;
duration and loop behavior;
target runtime: web, React Native, iOS, Android, or generic Lottie JSON;
editable controls needed at runtime: background, color, size, stroke, speed, etc.

If the user gives only a vague motion request, ask for or derive one concrete asset first.

Harness Rule

Use the external diffusionstudio/lottie harness rather than inventing a custom player.

Read references/external-harness.md before setup.
Bootstrap or refresh the harness with scripts/bootstrap_harness.sh.
Keep generated animation files inside the harness project while iterating.
Treat the upstream harness as the rendering contract for preview and slot behavior.

Workflow

Confirm the asset, target surface, duration, loop mode, and runtime target.
Bootstrap the external harness if needed.
Generate or edit public/lottie.json in the harness project.
Expose at least one background-color control and any explicitly requested controls.
Run the local preview and visually verify the result.
Run motion-review-gate when the asset is meant for a product UI surface rather than a throwaway demo.
Export the usable artifact set and summarize how to embed it.

Output Contract

Produce these artifacts when the user asks for a usable result:

Read the full file on GitHub · 88 lines

Files

What ships with it

4 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.

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.

10d ago First seen · 88 lines · 69 tokens per session scan A 61fa423b49f8

Subscribe to this mod's changes

lottie-motion-builder is a skill published in the GitHub repository markoblogo/abvx-agent-skills (16 stars, last pushed yesterday), licensed MIT. It adds 69 tokens to every session and 688 once invoked, about $0.0003 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.

Claude Code Creative and media Debugging Design and UX agent-skills ai-agents codex developer-tools

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