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Obsidian MCP Server

Obsidian MCP Server

by aniketbiswas
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
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search_notes

Search notes in an Obsidian vault with query syntax for path, file, tag, and exact phrases. Returns ranked matches with relevance scores.

Instructions

Search for notes in the Obsidian vault using Obsidian's query syntax. Supports operators like: path:, file:, tag:#, content in quotes, and more. Returns matching files with relevance scores.

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": {
      "query": "<query>"
    },
    "name": "search_notes"
  }
}

Input Schema

NameRequiredDescriptionDefault
limitNoMaximum number of results to return (default: 20).
queryYesSearch query. Supports Obsidian search syntax like: "exact phrase", path:folder/, tag:#mytag, file:name

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.2

TDQS

A3.8/5.0
Behavior3/5

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

With no annotations, the description carries the burden of behavioral disclosure. It mentions that results include relevance scores and supports operators, but does not clarify pagination, sorting, side effects (though search is clearly read-only), or error behavior. This is adequate but not rich.

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 two sentences, front-loaded with the core action, and contains no fluff. Every sentence contributes useful information.

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

Completeness4/5

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

There is no output schema, so the description appropriately mentions return format (files with relevance scores). It covers the core purpose and query syntax, but could be more complete by noting default limit behavior and when to use it relative to sibling search tools. Still, it is largely sufficient for an agent to select and invoke the tool.

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

Parameters3/5

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

Schema coverage is 100%, so the baseline is 3. The description adds examples of query syntax that also appear in the schema, offering no meaningful extra meaning beyond the parameter descriptions.

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

Purpose5/5

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

The description clearly states the tool's purpose: searching notes in the Obsidian vault using Obsidian's query syntax. It lists supported operators, distinguishing it from simpler sibling tools like search_by_tag or simple_search.

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

Usage Guidelines3/5

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

The description implies usage for queries requiring Obsidian's full syntax but does not explicitly mention when to choose this over alternatives such as simple_search or search_by_tag. No exclusion criteria or context is given.

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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