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sentrul

sentrul-mcp-server

by sentrul

sentrul_trace_lookup

Retrieve structured Langfuse trace data by ID for inspection and analysis in MCP clients.

Instructions

Retrieve a public Langfuse trace by ID. Returns the structured trace payload for inspection in the client.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
trace_idYes
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool retrieves a 'public' trace and returns a 'structured trace payload', but lacks details on permissions, rate limits, error handling, or what 'public' entails (e.g., access controls). This leaves significant gaps for a tool that likely involves data access.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is appropriately sized with two sentences that are front-loaded and efficient. It avoids unnecessary details, though it could be slightly more structured (e.g., separating purpose from output).

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?

Given the tool's low complexity (1 parameter, no output schema, no annotations), the description is somewhat complete but lacks depth. It covers the basic action and output intent, but misses behavioral aspects like authentication needs or error cases, making it adequate but with clear gaps.

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?

The description adds minimal meaning beyond the input schema, which has 0% coverage. It implies 'trace_id' is used to look up a trace, but doesn't specify format, source, or constraints (e.g., length, pattern). With low schema coverage, the description doesn't fully compensate, so it meets the baseline for adding some context.

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?

The description clearly states the verb ('Retrieve') and resource ('public Langfuse trace by ID'), making the purpose specific and understandable. However, it doesn't explicitly differentiate from sibling tools like 'sentrul_compliance_scan' or 'sentrul_research', which might have overlapping domains but different functions.

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?

The description provides no guidance on when to use this tool versus alternatives, such as the sibling tools. It mentions 'for inspection in the client' but doesn't clarify scenarios, prerequisites, or exclusions, leaving usage context implied at best.

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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