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damientilman

Mailchimp MCP

create_batch_webhook

Create a webhook to receive automatic notifications when your Mailchimp batch operations finish, eliminating the need to poll for status.

Instructions

Create a new batch webhook that notifies a URL when batch operations complete.

Use to receive callbacks when batch jobs finish instead of polling get_batch_status. Use update_batch_webhook to change the URL later and delete_batch_webhook to remove it.

Args: url: The callback URL Mailchimp will POST to when a batch completes (must be publicly reachable).

Returns: JSON with id (new batch_webhook_id), url, enabled (boolean). Returns an error object if the URL is rejected.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYes
accountNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

Annotations are neutral; description adds value by noting the URL must be publicly reachable and describing error behavior on rejection. Discloses creation side-effect but does not cover idempotency.

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?

Efficient prose: two sentences for purpose/guidance, then structured Args/Returns. No fluff, front-loaded with key info.

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?

Covers purpose, usage, return values, and error case. Missing explanation of account parameter, but given output schema exists and tool is simple, overall fairly complete.

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?

Describes url parameter well but omits the optional account parameter entirely. Schema coverage is 0%, so description partially compensates but leaves a gap for account.

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?

Clearly states 'Create a new batch webhook' and explains its function to notify a URL on batch completion. Distinguishes from sibling tools like get_batch_status, update_batch_webhook, and delete_batch_webhook.

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?

Explicitly advises using this tool instead of polling get_batch_status, and mentions update/delete for modifications. Lacks explicit when-not-to-use guidance, but provides clear context and alternatives.

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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