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Glama

pt_traceroute

Read-only

Runs a traceroute from a source device to a destination name or IP and returns the hop list, helping troubleshoot path and reachability in Packet Tracer networks.

Instructions

Traceroute (tracert on hosts) from a device to a device name or IP; returns the hop list.

Input Schema

NameRequiredDescriptionDefault
dstYes
srcYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.6

TDQS

B3.3/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds that it 'returns the hop list', which is useful output context, but says nothing about prerequisites, expected runtime, or failure behavior for a path that may traverse unstarted devices.

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 front-loaded sentence with the verb first, a helpful platform alias in parentheses, and the return value appended. No wasted words.

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

Completeness3/5

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

For a simple two-parameter read-only diagnostic, the description covers purpose, endpoints, and return value. It omits operational context such as whether the simulation must be started or how device names are resolved, which is a meaningful gap given no output schema and no parameter descriptions.

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 coverage is 0%, so the description must compensate. It does explain that src is a device and dst can be a device name or IP, which maps meaning onto both parameters, but it doesn't specify the expected format or naming for src beyond 'device'.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Traceroute ... from a device to a device name or IP') and even clarifies the host-side alias (tracert). It does not explicitly differentiate itself from the sibling pt_ping or pt_diagnose, so it falls short of a 5.

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?

There is no guidance on when to use traceroute versus pt_ping, pt_ping_matrix, or pt_diagnose, and no stated prerequisites (e.g. devices must exist or be powered on). Usage is only implied by the tool name.

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