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read_full_buf

Retrieve the complete content of an open Neovim buffer, including unsaved changes, by specifying its file path. Returns all lines with 1-based line numbers.

Instructions

Read the full content of a Neovim buffer. Read-only; reads from Neovim's in-memory buffer, which may differ from the file on disk if there are unsaved changes.

file: path relative to Neovim's cwd (as shown in get_state buffers). The buffer must already be open in Neovim; returns an error otherwise.

Use this when you need to see the entire file. Use read_buf_range instead when you only need a specific section — it returns less data.

Returns {lines, total_lines}. lines is a list of strings, each prefixed with its 1-based line number (e.g. "1: first line").

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fileYes
Behavior5/5

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

No annotations provided, but description thoroughly covers behavior: read-only, reads from in-memory buffer (may differ from disk), returns error if buffer not open, and describes return format.

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?

Concise and well-structured. Main action front-loaded, then details in separate sentences. Every sentence adds value without redundancy.

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

Completeness5/5

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

No output schema, but description fully explains return format (lines, total_lines with line numbers). Covers all behavioral aspects, constraints, and context. No gaps.

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?

Only one parameter 'file' with 0% schema description coverage. Description adds critical meaning: path relative to Neovim's cwd, must be open, error otherwise. Fully compensates for schema gap.

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?

Clearly states 'Read the full content of a Neovim buffer' with specific verb and resource. Distinguishes from sibling 'read_buf_range' by specifying when to use each.

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

Usage Guidelines5/5

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

Explicitly says 'Use this when you need to see the entire file. Use read_buf_range instead when you only need a specific section.' Also notes the buffer must be open in Neovim.

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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