CatchAll (by NewsCatcher)

Official

by Newscatcher

Overview Schema Source Related Servers Discussions Admin

Python

Remote

create_entity

Create a company or person entity. Requires a name plus at least one identifying field: a description or a domain.

Instructions

Create a single entity (a company or person).

name is required plus at least one identifying field: either description or additional_attributes.company_attributes.domain.

Input Schema

TableJSON Schema

Name	Required	Description
`name`	Yes	Entity name (required).
`api_key`	No	CatchAll API key. Optional if provided via x-api-key header or CATCHALL_API_KEY env var.
`description`	No	Optional description of the entity.
`entity_type`	No	Optional entity type: 'company' (default) or 'person'.
`external_entity_id`	No	Optional customer-supplied identifier linking this entity to an external system's record (new in 1.6.3).
`additional_attributes`	No	Optional structured attributes. For companies, use `{"company_attributes": {"alternative_names": [...], "domain": "...", "key_persons": [...], "description": "..."}}`.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.0.0Jul 28, 2026

TDQS

A4/5.0

Behavior2/5

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

No annotations provided, so description must cover behavioral traits. It only states creation; lacks details on idempotency, error behavior, permissions, or side effects. This is a significant gap for a mutation tool.

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?

Two sentences, front-loaded with action, every word adds value. Efficient and structured.

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?

Given full schema coverage and output schema, description covers key usage nuance. Missing some behavioral context, but adequately complete for a create tool with rich structured fields.

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

Parameters4/5

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

Schema description coverage is 100%, baseline 3. Description adds extra semantic value by clarifying the constraint 'at least one of description or additional_attributes.company_attributes.domain' beyond what schema provides.

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?

Description clearly states it creates a single entity (company or person), with specific verb and resource. It distinguishes from sibling 'create_entities_batch' by emphasizing single entity creation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Description implies usage for single entity creation, contrasting with batch creation sibling. However, it does not explicitly state when not to use or provide alternatives, though the distinction is clear.

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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