SINT Protocol

sint__add_server

Dynamically add a new downstream MCP server at runtime to the SINT Protocol security proxy, enabling runtime server expansion through command specification.

Instructions

Dynamically add a new downstream MCP server at runtime

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": {
      "name": "<name>",
      "command": "<command>"
    },
    "name": "sint__add_server"
  }
}

Input Schema

Name	Required	Description
`name`	Yes	Unique name for the server
`command`	Yes	Command to spawn the server
`args`	No	Arguments for the command

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Apr 16, 2026

TDQS

B3.4/5.0

Behavior2/5

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

With no annotations provided, the description carries full burden but only states the action without behavioral details. It doesn't disclose permissions needed, whether this affects system stability, if changes persist, error handling, or what happens on success/failure. 'Dynamically' hints at runtime modification but lacks specifics.

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?

Single sentence with zero waste—every word contributes essential information: action ('add'), resource ('downstream MCP server'), and key constraint ('dynamically...at runtime'). No redundant or verbose phrasing.

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 tool that performs a system modification (adding servers) with no annotations and no output schema, the description is insufficient. It doesn't explain what 'downstream MCP server' means in this context, what the tool returns, or critical behavioral aspects like side effects or security implications.

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 description coverage is 100%, so parameters are fully documented in the schema. The description adds no additional meaning beyond implying these parameters configure the server addition. Baseline 3 is appropriate as the schema handles parameter documentation adequately.

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 specific action ('add') and resource ('new downstream MCP server'), with the qualifier 'dynamically...at runtime' distinguishing it from static configuration. It differentiates from sibling 'sint__remove_server' by specifying addition rather than removal.

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 context ('at runtime') but doesn't explicitly state when to use this tool versus alternatives like 'sint__servers' (likely for listing) or 'sint__remove_server'. No guidance on prerequisites, error conditions, or specific scenarios for dynamic server addition is provided.

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