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Inferensys

Apollo.io MCP Server

by Inferensys

get_contact

Retrieve a single contact from your Apollo CRM using its unique ID. Access any contact record without cost.

Instructions

Get a single contact by ID from your Apollo CRM. FREE.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
contact_idYesApollo contact ID
Behavior2/5

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

No annotations provided, and the description does not disclose behavioral traits such as authentication requirements, rate limits, or side effects. It only states the operation is a simple get, but without annotations, more transparency is expected.

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?

Extremely concise single sentence. However, it could be structured with more context (e.g., read-only hint). Still, it lacks waste.

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

Completeness2/5

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

No output schema and the description does not hint at return values or structure. For a simple get tool, some indication of what fields are returned would be helpful. Missing 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?

Schema has 100% coverage on the single parameter contact_id with description 'Apollo contact ID'. The tool description adds no extra meaning beyond the schema, so baseline of 3 is appropriate.

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 clearly states the verb 'Get', resource 'single contact', and scope 'by ID from your Apollo CRM'. It distinguishes from sibling tools like search_contacts and create_contact.

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 on when to use this tool vs alternatives, no prerequisites, and no context on when not to use it. Only mentions 'FREE' which is not usage advice.

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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