nika-init 0.62.0

Nika project scaffolding — course generator, workflow templates, showcase
Documentation 
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# =============================================================================
# SHOWCASE 14 — Guardrailed Agent
# =============================================================================
# requires_llm: true
# category: advanced
#
# Agent with comprehensive safety: guardrails (length, regex),
# limits (cost, turns, duration, tokens), and structured output.

schema: "nika/workflow@0.12"
workflow: guardrailed-agent
provider: "{{PROVIDER}}"
model: "{{MODEL}}"

artifacts:
  dir: .

inputs:
  topic:
    type: string
    default: "Rust memory safety patterns"

tasks:
  - id: research_agent
    agent:
      system: |
        You are a technical writer. Include "recommendation" and "example" in output.
        Use nika_log for progress, nika_complete for final output.
      prompt: |
        Write documentation on: {{inputs.topic}}
        Include: overview, 3 patterns with examples, pitfalls, recommendations.
      tools: [builtin]
      max_turns: 6
      max_tokens: 2000
      token_budget: 15000
      completion:
        mode: explicit
      guardrails:
        - type: length
          min_words: 300
          max_words: 2000
          on_failure: retry
        - type: regex
          pattern: "(?i)recommendation"
          message: "Must include recommendations"
          on_failure: retry
        - type: regex
          pattern: "(?i)example"
          message: "Must include examples"
          on_failure: retry
      limits:
        max_turns: 6
        max_tokens: 30000
        max_cost_usd: 0.50
        max_duration_secs: 120

  - id: structure_docs
    depends_on: [research_agent]
    with:
      docs: $research_agent
    infer:
      prompt: "Convert to structured JSON: {{with.docs}}"
      response_format: json
      temperature: 0.1
      max_tokens: 2000
    structured:
      schema:
        type: object
        properties:
          title:
            type: string
          overview:
            type: string
          patterns:
            type: array
            items:
              type: object
              properties:
                name:
                  type: string
                description:
                  type: string
              required: [name, description]
          recommendations:
            type: array
            items:
              type: string
        required: [title, overview, patterns, recommendations]
    artifact:
      path: output/structured-docs.json
      format: json

  - id: quick_reference
    depends_on: [structure_docs]
    with:
      structured: $structure_docs
    infer:
      prompt: |
        Create a quick-reference cheat sheet from: {{with.structured}}
        Use a table, numbered pitfalls, and 3 golden rules.
      temperature: 0.3
      max_tokens: 800
    artifact:
      path: output/quick-reference.md