build-fountain-app skillA
build-fountain-app is agent-read markdown (skill) from binarybourbon/fountain: Build an application on top of the Fountain API — a browser app, a bot, an internal tool, anything that hires agents, sends them prompts and renders what they do. Use whenever the user says "build an app on Fountain", "a client for Fountain", "another fountain-team / workbench / demo app", "Sign in with Fountain", or wants to ship something that talks to /api from its own origin. Covers the published TypeScript SDK (@agentshit/fountain-sdk), the shape (static SPA on the SDK, or a small server in.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add binarybourbon/fountain/build-fountain-app@git:20260825.aafd8dcmdr add binarybourbon/fountain/build-fountain-app@sha256:0005850a8a41d01fPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_rnjb7jwzdwcxetak)
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Versions
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12164 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
binarybourbon/fountain · 14 stars · license AGPL-3.0 · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rnjb7jwzdwcxetak GET https://markdownregistry.com/api/v1/resolve?ref=binarybourbon/fountain/build-fountain-app GET https://markdownregistry.com/api/v1/blob/0005850a8a41d01f41910e72b49d74dda17a62ae75900e5b13acc376c2feecbc