fx-cli-shape SKILL.md skillA
fx-cli-shape from vercel-labs/fx is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vercel-labs/fx/fx-cli-shape@git:20261106.d06b702Pins git:20261106.d06b702 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vercel-labs/fx
- Path
.fx/skills/fx-cli-shape/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261106.d06b702, committed Nov 6, 2026
- First version recorded
- Oct 30, 2026
- Size
- 17,711 bytes
- Repository stars
- 3,794
- License
- Apache-2.0
Choose the mechanism and the names for any user-facing control in fx, and check changes against the agreed shape. Covers subcommands, arguments, flags and options, settings keys in settings.json and .fx.json, environment variables (FX_ env vars), slash commands, JSON output, and exit codes. Use when adding, renaming, deprecating, removing, or reviewing one, for example "add a flag", "add an option", "new env var", "make this configurable", "let users turn on X", "add a slash command…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# fx CLI shape fx follows git and Unix conventions for how people and scripts control it. Each concept gets one mechanism and one name, so anyone who knows git can guess the command, flag, or setting. Use this skill to pick the mechanism for a new control, name it on every surface, and check a change before it lands. The maintainers agreed on these rules; follow them unless a maintainer says otherwise in the conversation. ## Values Every rule below comes from these values. When a case isn't covered, decide by them, then ask a maintainer. - **Guessable.** Someone who knows git and the Unix command line should predict what a control is called, where its options go, and which source wins. Follow open standards first, such as `AGENTS.md`, the Agent Skills folders, MCP's `mcp.json`, and `NO_COLOR`; then git; then what other coding agents agree on. When copying a reference would make a command harder to type, the shorter form wins. - **One concept, one name.** A setting is spelled the same in settings files, flags, env vars, slash commands, JSON, ACP, and libfx. Only each surface's case changes. …
Read the whole file at its exact version.
How to install
mdr add vercel-labs/fx/fx-cli-shape@sha256:cfa62a07afec32acThe line at the top of this page pins the label git:20261106.d06b702, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_lq3ywgdp7s3fgjvq)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 30, 2026 and Nov 6, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261106.d06b702 latest | 2026-11-06 | d06b702 | 17,711 B | A | view · diff |
| git:20261102.210611c | 2026-11-02 | 210611c | 14,616 B | A | view · diff |
| git:20261030.dc02fa1 | 2026-10-30 | dc02fa1 | 14,616 B | A | view |
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 (17711 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
vercel-labs/fx · 3,794 stars · license Apache-2.0 · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lq3ywgdp7s3fgjvq GET https://markdownregistry.com/api/v1/resolve?ref=vercel-labs/fx/fx-cli-shape GET https://markdownregistry.com/api/v1/blob/cfa62a07afec32ac8f57c7527878da05419f11a2b9bb447593d6748d38a08c10
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.