Manage Formbricks surveys, responses, contacts, action classes and webhooks through the Management API on Formbricks Cloud.
Formbricks ships in the w6w first-party pack. It declares 25 actions, 3 health checks, and the host runs its code in a sandbox that never sees the credential.
io.w6w.formbricksFormbricks is an open-source survey and experience-management platform: link surveys, in-app and website surveys, and the contacts and attributes that let a team target and attribute feedback. This app drives the Formbricks Cloud Management API from a workflow.
It creates, reads, updates and deletes surveys and generates single-use links; lists, reads, creates, updates and deletes responses (which runs Formbricks’ own response pipeline, so webhooks and follow-up emails fire); reads contacts, contact attributes and attribute keys; manages the action classes that trigger in-app surveys; and manages webhooks that call back when a response is created, updated or finished.
A key is bound to the workspaces you granted it, so every call stays within them. Health checks cover the Formbricks Cloud app, and the key’s live rate-limit headroom.
Three routes to the same 25 actions. The Workflow tab is generated from Formbricks's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.
action-class-delete Delete an action class. Automatic action classes cannot be deleted (400).
action-class-list List the action classes (triggers for in-app surveys) of the workspace.
contact-attribute-key-list List the contact attribute keys defined in the workspace.
contact-attribute-list List every contact attribute value in the workspace (contact ID, attribute key ID, value).
me-get Return what the API key resolves to: the workspace it is bound to (single-workspace keys) or its organization and per-workspace permissions (organization keys). Never returns the key itself.
response-create Create a response for a survey. This runs the response pipeline: webhooks, integrations and follow-up emails fire as for a real respondent.
response-list List survey responses. Pass a survey ID to restrict to one survey; page with `limit` and `skip`.
response-update Update a response, e.g. to add answers or mark it finished. Runs the response pipeline (webhooks fire; follow-up emails when finished).
survey-create Create a survey. Formbricks recommends building surveys in its editor; this accepts the documented core fields plus any other survey field via `fields`.
survey-delete Permanently delete a survey and its responses. Formbricks asks that this is used only when strictly necessary.
survey-list List every survey the API key can reach. Each survey carries both `questions` (legacy) and `blocks` (current); `questions` is derived from `blocks`.
survey-single-use-links Generate single-use survey links for a survey. The survey must have single-use links enabled (otherwise 400).
survey-update Update an existing survey with a partial body. Only the fields you set are sent.
webhook-create Create a webhook that Formbricks calls when a response is created, updated or finished.
A workflow step names the app and the action, and the editor fills in the
connection when you pick one. This is the Step shape from the
workflow spec, carrying Formbricks's real ids.
{
"manifestVersion": "2",
"name": "formbricks-example",
"steps": [
{
"id": "action-class-create",
"uses": {
"app": "io.w6w.formbricks",
"action": "action-class-create",
"connection": "conn_YOUR_CONNECTION_ID"
},
"with": {
"workspaceId": "<workspaceId>",
"name": "<name>",
"type": "<type>"
}
}
]
}action-class-create action-class-get action-class-list contact-attribute-key-get contact-attribute-key-list +20 more actions available
Every app-specific value here is a blank you have to fill in. An
app action is reached through the connection that authenticates it, so the
address is a connection id, not the app id — and connections belong to your account,
so a public page cannot know yours. Create one for Formbricks, then fill in
the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the
parameters that action declares. The call itself is real — the shape is transcribed
from the studio's own snippet builder, which prints the same kind of blanks — but
nothing in it is specific to Formbricks. The Workflow tab is where this app's
real ids are.
npm install @w6w/sdkyarn add @w6w/sdkpnpm add @w6w/sdkdeno add npm:@w6w/sdkimport { W6wClient, isActionRun } from "@w6w/sdk";
// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();
const envelope = await client.run({
urn: "conn_YOUR_CONNECTION_ID",
action: "action-class-create",
payload: {
workspaceId: "<value>",
name: "<value>",
type: "<value>",
// key: "<value>",
// description: "<value>",
// noCodeConfig: "<value>",
},
});
if (isActionRun(envelope)) console.log(envelope.value); npm install -g @w6w/cli w6w run conn_YOUR_CONNECTION_ID --action action-class-create --payload '{"workspaceId":"<value>","name":"<value>","type":"<value>"}' Give an AI agent Formbricks — without giving it Formbricks's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.
One tool call{
"name": "w6w_invoke",
"arguments": {
"ref": "app:io.w6w.formbricks#action-class-create",
"input": {
"workspaceId": "<workspaceId>",
"name": "<name>",
"type": "<type>"
}
}
}
Every tool names its target with a single ref. The
app: form above doesn't name a connection at all — the
host resolves which of the caller's Formbricks connections to sign
with, and refuses rather than guesses when the answer is ambiguous.
The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.
Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.
Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.
Formbricks's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.
The MCP surface is part of the hosted platform. Formbricks itself is MIT, and the runtime that executes it is source-available (FSL).
Formbricks declares its own checks, so its health is a property of the app rather than something the host guesses at.
Unauthenticated GET of app.formbricks.com/health; the body must be `{status:"ok"}`.
Remaining share of the 100 requests/minute per-key allowance, from x-ratelimit-*.