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Documentation Index

Fetch the complete documentation index at: https://docs.hipocap.com/llms.txt

Use this file to discover all available pages before exploring further.

Playground is an interactive sandbox to experiment with prompts, models, and tools—either from scratch or directly from traced spans.

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What You Can Do

  • Prompt experimentation: Test prompt variations and inputs with instant results.
  • Open from spans: Reproduce exact configurations from any span with Open in Playground.
  • Tool integration: Configure and test custom tools that models can call.
  • Session history: Review and replay past runs with full context.
Laminar Playground Interface
To access the playground:
  1. In the Laminar dashboard, click New playground.
  2. Choose a model and start experimenting—or open directly from a span.

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Start from Scratch

  • Create a new playground to iterate quickly.
  • Send requests, view responses, and compare outputs side by side.
  • Save versions to revisit later.

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Start from a Span

Click Open in Playground on any LLM span; the playground inherits:
  • Model settings (model, temperature, token limits, thinking tokens)
  • Images and input formatting
  • Tools and tool configuration
  • System prompts and message history
This removes the need to recreate complex requests—tweak and rerun immediately.
Playground opened from a traced span

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Tools

Add tools so models can call functions during a session. Tools are defined as JSON with function names, descriptions, and parameter schemas; choose when tools are allowed (none, auto, required, or a specific function).
Laminar Playground Tools
Example tool config 
{
  "searchDatabase": {
    "description": "Search for information in the company database",
    "parameters": {
      "type": "object",
      "properties": {
        "query": { "type": "string", "description": "Search query or keywords" },
        "category": {
          "type": "string",
          "enum": ["users", "orders", "products"],
          "description": "Database category to search"
        },
        "limit": {
          "type": "number",
          "description": "Maximum number of results to return",
          "default": 10
        }
      },
      "required": ["query", "category"]
    }
  }
}
Learn more about tool choice options in the AI SDK documentation.

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History

Every playground run is saved. The History tab shows:
  • Full conversations (prompts and responses)
  • Model configurations (model, temperature, tokens, etc.)
  • Tool calls with inputs/outputs
  • Performance metrics (latency, tokens, cost)
  • Timestamps for each run
Laminar Playground History
Open any past run to review, compare, or duplicate it for new experiments.