markdown-vault-mcp

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append_to_note

Append markdown content to a note, optionally under a specific subsection; creates the subsection if missing, preserving vault organization.

Instructions

Append content to a note, optionally within a specific subsection.

Args: note_path: Path to the note relative to vault root content: Content to append subsection: Optional heading title to append under. If not found, creates it at end.

Returns: Success message or error description

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": {
      "note_path": "<note_path>",
      "content": "<content>"
    },
    "name": "append_to_note"
  }
}

Input Schema

Name	Required	Description	Default
`content`	Yes
`note_path`	Yes
`subsection`	No

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.3.1Sep 6, 2026

TDQS

A3.9/5.0

Behavior3/5

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

With no annotations, the description carries the behavioral burden. It does disclose that a missing subsection is created at the end and that it returns success or error. It does not mention what happens if the note itself is missing, how content is formatted, or other side effects.

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 compact and well-structured with a clear opening sentence followed by Args and Returns sections. Every sentence adds useful information without redundancy.

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?

For a simple tool with three parameters and an output schema, the description covers the essential behavior and all parameter semantics. It lacks only minor context such as behavior when the target note does not exist, but it is mostly complete.

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

Parameters5/5

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

Schema coverage is 0%, so the description must explain all parameters. It does so well: note_path is relative to vault root, content is what gets appended, and subsection is optional with defined behavior when not found. This goes well beyond the bare schema.

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 a specific action ('Append content to a note') and its main option (subsection). However, it does not distinguish this from sibling tools like append_to_daily_note or log_to_note, so it stops short of full differentiation.

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 use case is implied: appending content to an existing note, optionally under a heading. But there are no explicit alternatives, exclusions, or guidance about when to prefer a sibling tool such as append_to_daily_note or log_to_note.

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