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OpenSIPS MCP Server

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by OpenSIPS

sipp_load_test

Generate SIP traffic to test a target SIP server's capacity by sending calls at a defined rate for a set duration, using built-in or custom SIPp scenarios.

Instructions

Run a SIPp load test against a target SIP server.

Parameters

target: Target host:port. cps: Calls per second to generate. duration: Test duration in seconds. scenario: Built-in scenario name (uac, uas) or path to .xml file.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
targetYes
cpsNo
durationNo
scenarioNouac

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, so the description should disclose behavioral traits. It only says 'Run a SIPp load test' without detailing side effects, resource requirements, or return behavior. Minimal transparency beyond the function name.

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 concise and well-structured: a single introductory sentence followed by a clean parameter list. Every sentence is informative and non-redundant, fitting in a small space.

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?

Given the presence of an output schema (not shown), the description adequately covers parameters and overall purpose. It could mention what output to expect, but with the output schema, this is not a critical omission.

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

Parameters4/5

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

Schema coverage is 0%, but the description provides meaningful explanations for all four parameters (target, cps, duration, scenario), including default values and allowed formats. This compensates well for the lack of schema 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 'Run a SIPp load test', specifying the verb and resource. It distinguishes from sibling tools like sipp_list_scenarios and sipp_run_scenario by focusing on load testing with custom parameters.

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 load testing but provides no explicit guidance on when to use this tool versus alternatives like sipp_run_scenario. No 'when not to use' or prerequisite information is included.

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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