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LSD MCP Server

LSD MCP Server

by lsd-so
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Hybrid

view_lsd

View SQL evaluation results and visual playback by entering LSD SQL code to analyze web data through a queryable database structure.

Instructions

"Returns a URL to a page where the user can view results as well as a visual playback of LSD SQL evaluation

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "lsd_sql_code": "<lsd_sql_code>"
    },
    "name": "view_lsd"
  }
}

Input Schema

NameRequiredDescriptionDefault
lsd_sql_codeYes

Implementation Reference

  • app.py:51-54 (handler)
    The handler function for the 'view_lsd' tool. It generates and returns a URL where the user can view the results of an LSD SQL query along with a visual playback of its evaluation.
    @mcp.tool()
def view_lsd(lsd_sql_code: str) -> str:
    """"Returns a URL to a page where the user can view results as well as a visual playback of LSD SQL evaluation"""
    return f"https://lsd.so/view?query={urllib.parse.quote_plus(lsd_sql_code)}"

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

C2.8/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool returns a URL but doesn't describe what the URL leads to in detail, whether it's interactive or static, if authentication is needed, or any side effects. This is a significant gap for a tool with no annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, well-structured sentence that efficiently conveys the core functionality without unnecessary details. It's front-loaded and wastes no words, making it highly concise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity (1 parameter, no annotations, no output schema), the description is incomplete. It lacks details on the URL's nature, expected input format, and how it differs from siblings like 'run_lsd', making it inadequate for full agent understanding.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description mentions 'LSD SQL evaluation' but doesn't explain the 'lsd_sql_code' parameter beyond what's implied. With 0% schema description coverage and 1 required parameter, the description fails to add meaningful semantics, such as the format or purpose of the code input.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Returns a URL to a page where the user can view results as well as a visual playback of LSD SQL evaluation.' It specifies the verb ('Returns a URL') and resource ('page for viewing LSD SQL evaluation results and playback'), though it doesn't explicitly differentiate from sibling tools like 'run_lsd' or 'search_trips'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention when to choose 'view_lsd' over 'run_lsd' or other siblings, nor does it specify prerequisites or exclusions, leaving usage context unclear.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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