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Inferensys

Apollo.io MCP Server

by Inferensys

update_opportunity

Update existing deals in Apollo.io by modifying fields like amount, stage, owner, or close date. Use this to keep your CRM pipeline current.

Instructions

Update an existing deal/opportunity. FREE. Undocumented endpoint.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
opportunity_idYesApollo opportunity ID
nameNo
amountNo
opportunity_stage_idNo
owner_idNo
closed_dateNo
Behavior2/5

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

No annotations provided; the description only notes 'FREE' and 'Undocumented endpoint', which alerts to instability but lacks details on side effects, permissions, or return values.

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

Conciseness3/5

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

Very short and no wasted words, but lacks structure and substance. It is concise but insufficiently informative.

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?

With 6 parameters, no output schema, and no annotations, the description is far from complete. It does not explain update behavior, constraints, or return values.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 17% (only opportunity_id described). The description adds no parameter meaning; thus fails to compensate for low schema 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 'Update an existing deal/opportunity', identifying the action and resource. However, it lacks differentiation from siblings like 'create_opportunity' or 'get_opportunity'.

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, prerequisites, or context. The description gives no usage information beyond the basic action.

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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