Introduction

nika: v1
workflow:
  id: summarize

permits:                                 # the file IS the blast radius
  net: { http: ["example.com"] }         #   one host, nothing else
  fs:  { write: ["/tmp/summary.txt"] }   #   one file, nothing else
  exec: false                            #   this workflow runs zero shells
  tools: ["nika:fetch", "nika:write"]

tasks:
  read:
    invoke:
      tool: nika:fetch
      args:
        url: https://example.com/post.md
        mode: text

  summarize:
    with:
      post: ${{ tasks.read.output }}       # the binding IS the edge
    infer:
      model: ollama/llama3.2:3b            # <provider>/<name> · local · zero key
      prompt: |
        Summarize in one sentence:
        ${{ with.post }}

  save:
    with:
      summary: ${{ tasks.summarize.output }}
    invoke:
      tool: nika:write
      args:
        path: "/tmp/summary.txt"
        content: "${{ with.summary }}"