local-agent-mcp

by ezra-y

Overview Schema Source Related Servers Discussions Admin

Python

Local

Apply project patch

apply_patch

Destructive

Transactionally apply an authorized Begin Patch block to a local project to make code changes reliably.

Instructions

Apply an authorized Begin Patch block transactionally.

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": {
      "project": "<project>",
      "patch": "<patch>"
    },
    "name": "apply_patch"
  }
}

Input Schema

Name	Required	Description	Default
`patch`	Yes
`project`	Yes

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.5.1Aug 24, 2026

TDQS

B3.3/5.0

Behavior3/5

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

The annotations already declare destructiveHint=true and readOnlyHint=false, so the destructive nature is known. The description adds 'transactional' which implies atomicity, but it does not explain what gets destroyed, whether changes are reversible, or what authorization is required for the patch. Given the annotations cover the safety profile, a 3 is appropriate—some added context but not comprehensive.

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?

A single sentence with no wasted words. The verb is front-loaded, and the qualifier 'transactionally' is placed right after. Every word earns its place; it is concise without sacrificing the core meaning.

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?

For a destructive, state‑modifying tool, the description omits essential context: what the patch applies to, what 'project' refers to, and what happens on failure. The output schema exists, so return values are covered, but the input semantics and operational expectations are incomplete. An agent would need to guess or consult external docs.

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?

Schema coverage is 0%, so the description must document parameters, but it does not explain 'project' at all. It vaguely implies that 'patch' contains a 'Begin Patch block' but does not define the format or relationship. With two required parameters and no explanation, an agent cannot infer correct usage from the description alone.

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 states a specific verb (apply) and resource (Begin Patch block), with a qualifier ('transactionally') that adds precision. It distinguishes from siblings like write_file by referencing a specific patch format, so an agent can tell it apart without opening the schema.

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?

No guidance is provided on when to use this tool versus alternatives such as write_file or run_command. The description does not mention prerequisites, when not to use it, or which sibling to prefer. This is a clear gap for a tool that modifies project state.

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