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discord_create_webhook

Create a webhook to programmatically post messages to a Discord channel. The returned ID and token enable authenticated webhook messaging.

Instructions

Create a webhook on a channel and return its ID and token. SECURITY: the returned token grants anyone the ability to post as this webhook without authentication — treat it as a secret. Requires the Manage Webhooks permission. Use the returned id+token with discord_send_webhook_message.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
channel_idYesID (snowflake) of the channel to attach the webhook to.
nameYesDisplay name for the webhook (max 80 characters).
avatarNoOptional avatar image URL for the webhook.
Behavior5/5

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

Discloses critical behavioral traits beyond annotations: the token grants unauthenticated posting capability and must be treated as secret. Annotations only indicate readOnlyHint=false and openWorldHint=true, so description adds essential security context.

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?

Three sentences with no wasted words. Front-loaded with action, then security, then permission/usage. Efficient and well-structured.

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

Completeness5/5

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

Given no output schema, the description explains the return value (ID and token), usage with discord_send_webhook_message, permission requirement, and security warning. Complete for a creation tool.

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 coverage is 100% and description does not add further parameter meaning beyond the schema. Baseline 3 is appropriate as schema already fully documents parameters.

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 the action: create a webhook on a channel and return its ID and token. Distinguishes from sibling tools by specifying use of returned id+token with discord_send_webhook_message.

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 requires Manage Webhooks permission and warns about security implications of the token. Provides clear context for when to use the tool, but does not explicitly state when not to use it.

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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