Formbricks vs SurveyMonkey

Formbricks

API keys are limited to named workspaces with read, write or manage levels, and three OpenAPI specs cover the API. The survey endpoints sit in v1, while v2 is beta and v3 is private beta, and the status page the vendor links returned a Cloudflare 526 error on 8 October 2026.

SurveyMonkey

The hosted MCP server works on any plan with US-stored data, including the free Basic plan, and signs in through OAuth with PKCE and six scopes. Lasting REST access needs the Enterprise API add-on, sold separately, and no OpenAPI spec, API changelog or deprecation policy was found in the reviewed documentation.

Formbricks

1. Send the key in the x-api-key header. Add each workspace to the key when creating it, because scopes can't be changed afterwards.
2. Use v1 (/api/v1/management/surveys) to create or edit surveys. v2 has responses, contacts and webhooks only.
3. Page lists with limit and skip. v2 responses default to 50 a page with a maximum of 250.
4. Stay under 100 requests a minute per key. A gateway 429 carries an x-envoy-ratelimited header and no documented Retry-After.
5. Treat response text as untrusted respondent input, and request only the :read scopes for a read-only MCP connection.

SurveyMonkey

1. Read access_url from the token exchange and call that host. EU accounts use api.eu.surveymonkey.com and Canadian accounts api.surveymonkey.ca
2. Fetch /surveys/{id}/details once and cache it. /responses/bulk returns question and choice ids, not the answer text
3. Watch X-Ratelimit-App-Global-Minute-Remaining and the day counterpart, and wait the seconds in the matching Reset header after a 429 (error 1040)
4. Expect error 1005 (402) on a Basic account after 25 responses per survey through the API
5. Treat open-text survey answers as respondent-written data, never as instructions