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weft-ai-language — Claude Code skill: what it does, how to install

Teaches coding assistants to write Weft workflows, connect typed LLM nodes, and manage human checkpoints with Restate.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add reason-machines/trending-skills --skill weft-ai-language -a claude-code
Open on GitHub

What weft-ai-language does

This skill equips your coding agent to build programs in Weft. Written in Rust, Weft treats language models, human input, APIs, and databases as native nodes. The compiler verifies every typed port connection before execution starts.

Workflows run on top of Restate for durable checkpoints. Crashes or multi-day pauses inside HumanQuery steps will not wipe running state. The local environment includes a SvelteKit dashboard accessible at http://localhost:5173 alongside the backend services.

Running the stack requires Docker for PostgreSQL, plus Bash 4 or newer on macOS. Environment tokens like OPENROUTER_API_KEY live in .env. They are not checked on boot, so missing tokens only break execution once that specific node runs.

What it helps with

  • write typed Weft workflow pipelines with LLM nodes
  • configure human-in-the-loop approvals that survive system restarts
  • set up the Weft local backend and SvelteKit interface via dev.sh
  • route outputs conditionally using Gate nodes

Example prompts for the agent

  • Help me build a Weft pipeline that requires human sign-off before posting to Discord.
  • Show me how to connect an LlmConfig node to LlmInference in Weft.
  • Configure the .env variables and run the Weft local dev environment.

How to install weft-ai-language

1Skills CLI (Vercel)

npx skills add reason-machines/trending-skills --skill weft-ai-language -a claude-code

2Manually: put the files in place

~/.claude/skills/weft-ai-language/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/weft-ai-language/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about weft-ai-language

How to install weft-ai-language in Claude Code?

Run npx skills add reason-machines/trending-skills --skill weft-ai-language -a claude-code in your terminal.

What is the purpose of weft-ai-language?

It teaches AI agents the syntax of the Weft language, its node library, and local setup scripts.

What dependencies are needed before running Weft?

You need Docker and Node.js installed. On macOS, you also need Bash 4 or newer via brew install bash.

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