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OpenSIPS

OpenSIPS MCP Server

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by OpenSIPS

dlg_list

List active SIP dialogs with optional filtering by Call-ID and From-tag for targeted monitoring and troubleshooting.

Instructions

List active SIP dialogs.

Parameters

callid: Optional Call-ID to filter by a specific dialog. from_tag: Optional From-tag to further narrow the dialog lookup.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
callidNo
from_tagNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

No annotations exist, so the description carries full burden. 'List' implies read-only, but the description doesn't explicitly state safety aspects (e.g., no modifications, permission requirements). It adds minimal behavioral context beyond the obvious.

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 extremely concise with a single sentence and parameter details, front-loaded with the core purpose. Every part earns its place.

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 simple listing operation and the existence of an output schema, the description is mostly complete. It could mention the return format (list of dialog objects), but the output schema likely covers that.

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?

The description adds valuable meaning to the parameters (callid for filtering by specific dialog, from_tag for further narrowing) beyond the empty schema descriptions, which have 0% coverage.

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 'List active SIP dialogs' uses a specific verb and resource, clearly distinguishing from sibling tools like dlg_end (which ends dialogs) and dlg_get_profiles (which retrieves profiles).

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 vs alternatives, such as when to use this versus other dialog-related tools. No prerequisites or exclusions are mentioned.

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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