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@arizeai/phoenix-mcp

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by Arize-ai

get-prompt

Fetch the exact prompt version you need by providing a prompt identifier, tag, or version ID, delivering the template and configuration for immediate use.

Instructions

Get a prompt using a single MCP-native interface.

Provide a prompt identifier to fetch the latest version, or add a tag or versionId to select a specific version.

Example usage: Get prompt "article-summarizer" Get prompt "article-summarizer" with tag "production" Get prompt "article-summarizer" using version "promptversionid1234"

Expected return: Prompt version object with template and configuration.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tagNo
version_idNo
prompt_identifierYes
Behavior2/5

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

No annotations provided. The description indicates a read operation but does not disclose potential side effects, auth requirements, or rate limits. Minimal behavioral context.

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 concise and includes examples, but the opening phrase 'single MCP-native interface' is slightly vague and could be more direct.

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?

Accounts for no output schema by describing return object. However, lacks comparison to siblings and behavioral details, leaving gaps given the tool's context.

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?

With 0% schema coverage, the description adds value via examples showing parameter usage, but does not explain parameter formats or constraints beyond the schema names.

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 retrieves a prompt via a unified interface, with options for latest or specific version. However, it does not explicitly differentiate from similar siblings like get-prompt-by-identifier or get-latest-prompt.

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?

Examples show how to use tag or versionId, but there is no guidance on when to use this tool versus alternatives like get-prompt-version or get-latest-prompt, given the many sibling tools.

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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