basin

Basin through One

Basin is a form backend service that captures form submissions from static sites and forwards data to email, webhooks or integrations—enabling developers to handle form data without building a custom backend.

One exposes Basin through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform basin if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm Basin is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real Basin account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

FormWebhooks

Action	Method	Path	Action id
List Form Webhooks	GET	/form_webhooks	conn_mod_def::GJgYZSfH03E::PcAtpyWETXy3F0_OW74HXw
Show a Form Webhook	GET	/api/v1/form_webhooks/{{id}}	conn_mod_def::GJgYZYjlaeg::7yRHgBHDSu-QReIY4EBzMw
Create a Form Webhook	POST	/api/v1/form_webhooks/	conn_mod_def::GJgYZvLJuLI::EF0myho5RPqmmLl6xL79WA
Delete a Form Webhook	DELETE	/api/v1/form_webhooks/{{id}}	conn_mod_def::GJgYZmscNjU::FmfUeTO9QhekHo9Qa4pllw
Update a Form Webhook	PUT	/api/v1/form_webhooks/{{ID}}	conn_mod_def::GJgYZfX15Vw::HBJv3KBiSnWBcfiZ8Im81Q