
fx Deep Dive: Inside Vercel's Tiny Native Coding Agent
fx is Vercel Labs' experimental coding agent in Zig, a roughly 6 MiB native binary built to embed anywhere. Its surfaces, providers, guardrails and tradeoffs.
26 articles

Vercel Labs' fx setup guide: install the Zig binary, pick one of three sign-in routes, script it with fx ask and JSON output, and run subagents from the CLI.

fx is Vercel Labs' experimental coding agent in Zig, a roughly 6 MiB native binary built to embed anywhere. Its surfaces, providers, guardrails and tradeoffs.

fx vs pi compared: two minimal agentic CLIs that minimize opposite things - pi refuses features, fx shrinks bytes. Who each one is actually for.

Vercel Sandbox egress control polices outbound traffic on the host with domain policies, CIDR rules, credential injection and deny-all by default.

Hermes Agent now supports Vercel AI Gateway and Vercel Sandbox. What shipped, how to switch, and why agent infrastructure is going bring-your-own.

Vercel Skill Packs bundle agent skills into one installable, unlisted pack on skills.sh. How packs work, what they mean for teams, and the trust questions.

Agent Plugins 1.0.0 is an open standard that packages Agent Skills and MCP servers into one plugin, with ChatGPT, Codex, Cursor and Copilot support at launch.

Vercel Chat SDK durable approvals pause a Workflow SDK run until a human clicks Approve in chat, with one requestApproval call and a wait that survives deploys.

DeepSeek V4 Flash via Novita on Vercel AI Gateway was 90% off for Pro customers through August 11. The before/after cost math and the provider-pinning setup.

Next.js 16.3 adds opt-in Instant Navigations with partial prefetching, up to 90% less dev-server RAM, faster cached builds and a version-matched AGENTS.md.

The v0 API is GA: send a prompt to Vercel's app-building agent, get a running app with an embeddable preview URL, then deploy it to Vercel in one more call.

Self-improving applications with Claude Code and Codex: the loop from user feedback to GitHub issue to reviewed PR, paying per closed issue, not per token.

Vercel AI Gateway spend budgets now cover teams and projects, with hard dollar limits, 50/75/100% email alerts and CLI defaults. How the three scopes compose.
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