{
  "schema": "tesign-radar/item/1",
  "generated_at": "2026-09-17T01:56:13.055Z",
  "lang": "en",
  "slug": "vercel-labs-fx",
  "url": "https://tesign.com/en/item/vercel-labs-fx/",
  "alternates": {
    "ko": {
      "html": "https://tesign.com/item/vercel-labs-fx/",
      "json": "https://tesign.com/item/vercel-labs-fx/index.json",
      "markdown": "https://tesign.com/item/vercel-labs-fx/index.md"
    },
    "en": {
      "html": "https://tesign.com/en/item/vercel-labs-fx/",
      "json": "https://tesign.com/en/item/vercel-labs-fx/index.json",
      "markdown": "https://tesign.com/en/item/vercel-labs-fx/index.md"
    }
  },
  "name": "fx",
  "use_label": "Shell-like coding agent, one binary",
  "one_liner": "Vercel Labs' coding agent CLI: a 6.17 MiB Zig binary, shell-like, embeddable via WASM",
  "text": {
    "why": "A coding agent from Vercel Labs with a different shape: one 6.17 MiB native binary written in Zig, with an interface closer to a Unix shell than an IDE in the terminal. It is model-agnostic — sign in with Vercel AI Gateway, a ChatGPT subscription (Codex OAuth) or a Grok subscription — and the same core builds to fx-core.wasm and fx-term.wasm, published to npm as libfx for Node.js, browser and Next.js hosts. fx acp connects it to editors and other Agent Client Protocol clients.",
    "take": "An experiment in making a coding agent small and embeddable like a Unix tool rather than an IDE — and the authors themselves label it experimental.",
    "build": [
      "With libfx you can embed a coding-agent terminal inside your own web app or internal tool (Node.js, browser, Next.js and Nuxt examples are provided), and extend the agent with skills, MCP servers and subagents."
    ],
    "who": [
      {
        "role": "Terminal-centric developers",
        "situation": "a light single-binary coding agent"
      },
      {
        "role": "Teams embedding an agent in their own product",
        "situation": "libfx (WASM) embedding"
      },
      {
        "role": "Users of ACP-capable editors",
        "situation": "connect the agent with fx acp"
      }
    ],
    "start": [
      {
        "command": false,
        "text": "curl -fsSL https://fx.sh/setup.sh | bash"
      },
      {
        "command": false,
        "text": "fx login          # Vercel AI Gateway (fx login codex for a ChatGPT subscription, fx login grok for Grok)"
      },
      {
        "command": false,
        "text": "cd your_project"
      },
      {
        "command": false,
        "text": "fx"
      },
      {
        "command": false,
        "text": "fx ask \"explain the changes in this repository\""
      }
    ],
    "caveat": [
      "Licence Apache-2.0. README status: 'Experimental. Use at your own risk', and the homepage warns of frequent changes. Model costs are separate: you need a Vercel AI Gateway key/account or a paid ChatGPT or Grok subscription. The homepage lists macOS and Linux as operating systems; Windows support [확인 필요]. The WebAssembly SDK is also experimental, and building from source needs Zig 0.16.0+."
    ]
  },
  "cta": {
    "type": "install",
    "label": "INSTALL",
    "url": "https://fx.sh/"
  },
  "ready": "install",
  "categories": [
    "dev-tools",
    "ai"
  ],
  "categories_confirmed": true,
  "tags": [
    "coding-agent",
    "cli",
    "zig",
    "webassembly",
    "vercel",
    "acp"
  ],
  "platform": [
    "macos",
    "linux",
    "cli"
  ],
  "license": {
    "spdx": "Apache-2.0",
    "scope": "permissive",
    "scope_text": "Commercial use, redistribution OK. Keep notices; mark changes.",
    "url": "https://spdx.org/licenses/Apache-2.0.html",
    "note": null,
    "open_source": true
  },
  "language": "Zig",
  "source_urls": {
    "canonical": "https://fx.sh/",
    "github": "https://github.com/vercel-labs/fx",
    "huggingface": null,
    "app_store": null,
    "sightings": [
      {
        "source": "github",
        "url": "https://github.com/vercel-labs/fx",
        "posted_at": "2026-09-05T03:00:00.000Z",
        "hn_url": null
      }
    ]
  },
  "numbers": {
    "as_of": "2026-09-16T21:00:00.000Z",
    "stars": 2988,
    "stars_unit": "GitHub stars",
    "stars_checked_at": "2026-09-15T19:35:17.822Z",
    "stars_observed_since_check": 0,
    "star_delta_24h": null,
    "star_delta_7d": 4,
    "star_delta_30d": 15,
    "star_delta_unit": "GitHub stars gained in the window, GH Archive events summed to as_of",
    "spark_14d": [
      null,
      null,
      5,
      4,
      null,
      null,
      null,
      null,
      null,
      2,
      2,
      null,
      null,
      null
    ],
    "hf_likes": null,
    "hf_likes_observed_at": null,
    "hn_points": null,
    "hn_points_observed_at": null,
    "store": null,
    "method": "Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours."
  },
  "ranks": null,
  "activity": {
    "pushed_at": "2026-09-15T17:04:26.000Z",
    "owner_type": "Organization",
    "open_issues": 229,
    "contributors": 18,
    "releases_count": 10,
    "latest_release": {
      "tag": "v0.0.10",
      "published_at": "2026-09-14T04:43:52.000Z",
      "prerelease": false
    },
    "checked_at": "2026-09-15T19:35:17.822Z",
    "core_checked_at": "2026-09-15T19:35:17.822Z"
  },
  "signals": [
    {
      "kind": "back",
      "label": "BACK CATALOG",
      "value": null
    }
  ],
  "images": {
    "og": "https://tesign.com/img/vercel-labs-fx-ed809f35cb.png",
    "cover": "https://tesign.com/img/vercel-labs-fx-ed809f35cb.png",
    "cover_width": 2400,
    "cover_height": 1260,
    "gallery": [
      "https://tesign.com/img/vercel-labs-fx-ed809f35cb.png"
    ],
    "alt": "The fx.sh landing page: the line 'Tiny, open, native coding agent.', the one-line install command (curl -fsSL https://fx.sh/setup.sh | bash) and the version line (v0.0.10 · 6.17mib · status: experimental), above the fx terminal that runs on the page (WebAssembly build), showing 'fx v0.0.10 · Run /help for commands', an input cursor and the 'auto · kimi-k3' status line.",
    "tier": 1
  },
  "dates": {
    "first_seen_at": "2026-09-13T09:42:52.615Z",
    "source_created_at": "2026-08-11T08:57:04.000Z",
    "discovery_hours": 792.7635041666666,
    "launch_signal_at": "2026-09-05T03:00:00.000Z",
    "kept_at": "2026-09-14T19:27:43.694Z",
    "first_published_at": "2026-09-14T19:27:43.752Z",
    "updated_at": "2026-09-15T20:14:13.611Z",
    "ingestion_mode": "backfill"
  },
  "notes": [
    "This file was produced by the same build, from the same data, as the tesign.com item page. The text is editorial; the numbers are stored observations.",
    "null in the JSON means not observed — never zero. The Markdown writes [unconfirmed] for it.",
    "Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.",
    "Reconstructed from archive data, not a live discovery.",
    "A summary, not legal advice."
  ]
}