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Basin for AI agents

Basin is a no-code backend for HTML forms, handling form submissions, webhooks, and spam filtering so a site doesn't need its own server code. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect BasinSee the 19 actions ↓
Forms and surveysAPI keyMCP + RESTusebasin.com
AUDIT LOG · BASINPOLICY: acme-support
09:41:07 · claude · u_8f2read
basin.list_form_views
List Form Views✓ allowed · 212ms
09:41:08 · claude · u_8f2read
basin.get_forms
Get Forms✓ allowed · 164ms
09:41:09 · claude · u_8f2write
basin.create_form
Create Form✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
basin.delete_form
Delete Form✕ blocked · policy: deny
EVERY BASIN CALL, ON THE RECORD
01 · USE CASES

What agents do in Basin.

01

Check recent form submissions

Get submissions for a form to see what visitors have sent in without touching the website's code.

02

Set up a webhook for submissions

Create a form webhook so new submissions are pushed to another system as they arrive.

03

Delete a spam submission

Delete a submission flagged as spam only after review, since removing it can't be undone.

02 · ACTIONS

19 Basin actions, graded by risk.

Every Basin action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

9

Look things up. Allowed by default.

  • basin.get_forms
    Get Forms
  • basin.get_domains
    Get Domains
  • basin.get_projects
    Get Projects
  • basin.get_webhooks
    Get Webhooks
  • basin.get_submissions
    Get Submissions
  • basin.list_form_views
    List Form Views
  • basin.get_form_details
    Get Form Details
  • basin.get_form_webhook
    Get Form Webhook
  • basin.get_project_details
    Get Project Details

write

6

Create and change things. Allow, or ask the user first.

  • basin.create_form
    Create Form
  • basin.update_form
    Update Form
  • basin.create_project
    Create Project
  • basin.update_project
    Update Project
  • basin.update_webhook
    Update Webhook
  • basin.create_form_webhook
    Create Form Webhook

destructive

4

Delete, cancel or archive. Ask first, or deny outright.

  • basin.delete_form
    Delete Form
  • basin.delete_project
    Delete Project
  • basin.delete_webhook
    Delete Webhook
  • basin.delete_submission
    Delete Submission
03 · HOW IT WORKS

Basin in three steps.

  1. 01Your users connect BasinThey add their Basin api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create Form” can wait for the user, and “delete Form” can be denied outright.
  3. 03Any agent can actYour agent calls Basin through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('basin', {
  read: 'allow',
  write: 'ask',        // create_form
  destructive: 'deny',  // delete_form
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Basin connects.

Users add their Basin api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Basin connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Basin from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More forms and surveys apps.

SafetyCulture255 actionsFormbricks45 actionsTypeform35 actionsFillout Forms22 actionsSurveyMonkey22 actionsFormdesk20 actionsDatascope19 actionsFeathery19 actions
ALL FORMS AND SURVEYS APPS →
07 · FAQ

Basin and Arc0, answered.

Q01

Can I use Basin with Claude, ChatGPT or Cursor?

Yes. Connect Basin to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Basin actions you allow.

Q02

How do users connect Basin?

Users add their Basin api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Basin actions can my agent take?

19 in total: 9 read, 6 write and 4 destructive, such as “create Form”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Basin?

Yes. Actions like “delete Form” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Basin too?

Yes. The same Basin connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Basin into your agent.

Your users connect Basin once, under your brand. Your agent gets 19 actions behind your policies, with every call on the record.

Connect BasinBrowse all apps →

Free to build · MCP + REST · Audit log on every plan