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paulieb89

PyP6Xer MCP Server

pyp6xer_schedule_quality

Read-onlyIdempotent

Run DCMA-style schedule quality checks to identify missing predecessors, lags, hard constraints, negative float, and resource issues in Primavera P6 XER files.

Instructions

Run DCMA-style schedule quality checks.

Checks include:

  • Missing predecessors / successors (open ends)

  • Activities with lags or leads

  • Activities with hard constraints

  • Negative total float

  • Activities with no resources (optional warning)

  • Milestone checks

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cache_keyNoCache key identifying the loaded XER file (set when calling pyp6xer_load_file)default
proj_idNoProject ID or short name; uses first project if omitted

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already indicate the tool is read-only and idempotent. The description adds valuable context by listing the specific quality checks performed, which goes beyond the annotations. No contradictions are present.

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, using a bullet list to present the checks. Every sentence earns its place with no verbose or redundant information.

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?

The description adequately covers the checks performed. Since the tool has an output schema, it is not necessary to detail return values. However, it could briefly mention the scope (e.g., operates on the loaded XER cache) to improve completeness.

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 input schema provides full description coverage for both parameters (cache_key and proj_id). The tool description does not add additional semantics beyond what is already in the schema, so it meets the baseline for high coverage.

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 tool runs 'DCMA-style schedule quality checks' and lists specific checks. This gives a concrete understanding of the tool's function. However, it does not differentiate from the sibling tool 'pyp6xer_schedule_health_check', which may have overlapping purpose.

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 like pyp6xer_schedule_health_check or pyp6xer_float_analysis. There is no mention of prerequisites, typical use cases, or when not to use it.

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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