Fireworks Open ELI5

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An open, portable Agent Skill for turning difficult systems into truthful, interactive visual stories. It compiles a versioned JSON story spec into one deterministic, self-contained HTML file that works offline.

The project combines an ELI5 layer with inspectable technical truth: readers can follow a real request or event through the system, inspect the evidence behind each conclusion, explore failure behavior, annotate scenes, and export the result without sending source material to a remote runtime.

A generated Chinese scene showing the graph, local actions, and conclusion-level evidence together.

• Truth Ladder — separates analogy, technical mechanism, and caveats.
• Evidence at the claim — each scene can show source status, core text, support scope, and a URL or explicit no-locator boundary.
• Four story grammars — concept, repository module, engineering tradeoff, and incident, each with a dedicated summary view and semantic validator.
• Detailed playback — global or scene-local traces animate real nodes, relationships, labels, arrow markers, evidence cards, and enter/hold/exit phases while keeping the active scene in view.
• Failure lens and teach-back — impact, symptom, fallback, questions, and answer reveals are part of the explainer rather than an appendix.
• Reader workspace — opt-in same-origin history, favorites, plain-text annotations, and keyboard-accessible scene navigation.
• Local export — PDF, scene PNG, all-scene PPTX, Pages-compatible DOCX, and optional verified native .pages conversion.
• Portable by construction — no runtime packages, remote fonts, remote resources, or network access during render.

• Skill runtime: Node.js 18 or newer and local file access.
• Package dependencies: none. There is no npm install, Python runtime, remote font, or remote rendering service.
• Rendering: no browser or network connection is required.
• Reading and export: use a modern browser for the interactive HTML and local PDF, PNG, PPTX, or DOCX export.
• Optional native .pages export: macOS, Apple Pages, and the bundled loopback helper.

The installer and the installed Skill have separate requirements. The skills@1.5.23 CLI used by the release canary requires Node.js 22.20 or newer; the installed Skill still runs on Node.js 18 or newer. Installation needs one-time access to the public GitHub repository; the npx route also needs the npm registry. A public install needs no GitHub account or token.

Paste one of these requests into your agent. It should inspect SKILL.md, refuse to overwrite an existing installation without permission, and report the final location.

Codex

Install the fireworks-open-eli5 Agent Skill globally from https://github.com/yizhiyanhua-ai/fireworks-open-eli5 using Codex's Skill installer. The repository root (.) is the Skill directory and its installed name must be fireworks-open-eli5. Review SKILL.md first, do not replace an existing copy without asking, verify the installed path, and tell me whether I need a new Codex task before using it.

Claude Code

Install the fireworks-open-eli5 Agent Skill globally for Claude Code from https://github.com/yizhiyanhua-ai/fireworks-open-eli5. Review SKILL.md first, use the Agent Skills CLI when available, and do not replace an existing copy without asking. If the installer requirement is not met, report it without changing my Node.js installation. Verify that Claude Code can discover the Skill and report the installed path.

The open Agent Skills CLI supports both Codex and Claude Code:

# Codex
npx skills@latest add yizhiyanhua-ai/fireworks-open-eli5 -g -a codex -y

# Claude Code
npx skills@latest add yizhiyanhua-ai/fireworks-open-eli5 -g -a claude-code -y

# Both agents
npx skills@latest add yizhiyanhua-ai/fireworks-open-eli5 -g -a codex -a claude-code -y

-g installs at user scope. Remove it for a project-local installation. Check the result with npx skills@latest list -g --json, then start a fresh agent task so the Skill is rediscovered. Review Skills before using them: they run with the permissions of the host agent.

node scripts/validate.mjs assets/example-spec.json
node scripts/render.mjs assets/example-spec.json example.html
node scripts/validate.mjs assets/example-spec.json example.html

The commands print compact JSON and exit nonzero on failure. Rendering is create-only by default. Use --force only to intentionally replace a known regular file; symbolic links are always rejected.

Run the complete contributor and distribution gate:

npm run check

This checks JavaScript syntax, focused tests, the canonical example, release package contents, and a render/validate canary from an unpacked archive.

On Node.js 22.20 or newer, also exercise an isolated Codex and Claude Code installation through the pinned Agent Skills CLI release:

npm run check:agent-install

After installation, ask for an evidence-aware visual explanation, for example:

Explain how one queued job moves through this repository. Cite real files, let me play the request path, and show what breaks when the lease expires.

Read SKILL.md for the agent workflow and references/spec-contract.md for the version 1 story spec.

question + audience + evidence
            │
            ▼
  versioned JSON story spec
            │ validate
            ▼
 deterministic HTML renderer
            │
            ├── offline interactive explainer
            ├── print / PDF
            ├── current-scene PNG
            ├── all-scene PPTX
            ├── Pages-compatible DOCX
            └── optional native Pages conversion

The JSON spec is the portable source of truth. The HTML contains its canonical SHA-256, and the validator can byte-compare a supplied spec against a fresh deterministic render.

Every explainer has a directory drawer. Favorites appear first, followed by independent tabs for the current outline, previously opened explainers, and annotation browsing. A reader can play, favorite, annotate, or export one scene without starting the global trace.

The local library is disabled until the reader selects Enable local library. It records only explainers actually opened at the same scheme, host, and port; it never scans the filesystem. Favorites and annotations are browser-local, unencrypted, and removed when that origin's browser data is cleared. They never modify the source JSON or generated HTML. file:// and unavailable storage degrade to an in-memory session.

See references/library-and-export.md for the persistence, privacy, accessibility, playback, and export contract.

PNG, PPTX, and DOCX are built locally in the browser without third-party libraries. Native Pages conversion is never faked by renaming a DOCX. Serve a trusted explainer directory with:

node scripts/serve.mjs --root /absolute/path/to/explainers --port 8772

The helper binds only to 127.0.0.1, verifies exact origin and a rotating process token, bounds and validates the generated DOCX/PNG structure, serializes conversion, and cleans task-specific temporary files. These controls protect the browser action from cross-site requests; they are not authentication against other local processes.

The renderer reads local files and writes one local file. Generated HTML uses a hash-whitelisted Content Security Policy, embeds no remote resources, and contains no XHR, WebSocket, eval, or HTML-string DOM insertion. Its only connection is a user-initiated same-origin request to the optional loopback Pages helper. Cited HTTP(S) URLs are ordinary reader-facing links, never runtime dependencies.

Annotations are capped and inserted as text. The validator rejects unsafe source URLs, external resources, runtime tampering, spec-hash drift, and unexpected CSP hashes. See SECURITY.md to report a vulnerability.

• SKILL.md — agent workflow and delivery boundary
• assets/example-spec.json — complete Chinese DNS example
• assets/explainer-shell.html — offline visual and interaction shell
• scripts/render.mjs — deterministic renderer
• scripts/validate.mjs — spec and output validator
• scripts/serve.mjs — loopback-only native Pages helper
• references/ — evidence, grammar, visual, reporting, workspace, and export contracts
• evals/ — task-quality and trigger evaluation prompts
• tests/ — Node built-in tests and adversarial fixtures

Read CONTRIBUTING.md, then run:

npm run check

The release package uses an explicit allowlist and keeps private: true to prevent accidental npm publication. This repository is intended to distribute an Agent Skill, not an npm runtime library.

Apache-2.0. See LICENSE and NOTICE.

Fireworks Open ELI5 is an independent implementation inspired by the Anthropic community eli5 skill and is not endorsed by Anthropic.