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formstack

io.usefulapi/formstack
Business & Operations Productivity Public & reachable MCP 2026-07-28

What this MCP does

Manages Formstack forms, fields, submissions, folders, prefilled links, notifications, workflows and webhooks.

Capabilities

Tools

20 tools
formstack_count_form_submissions
Count a form's submissions
Count a form's submissions, with a per-day breakdown over a lookback window of up to 7 days. Formstack: GET /forms/{formId}/submissions/count.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'start_date': {'type': 'string', 'description': 'Date to count from, e.g. 2026-09-01.'}, 'lookback_period': {'type': 'integer', 'maximum': 7, 'minimum': 1, 'description': 'How many days to count backwards (maximum 7).'}}}
formstack_create_folder
Create a folder
Create a folder for organising forms, at the root or inside a parent folder. Formstack: POST /folders.
Destructive
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['name'], 'properties': {'name': {'type': 'string', 'minLength': 1, 'description': 'Folder name.'}, 'parent': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': -9007199254740991, 'description': 'Parent folder ID (omit for root level).'}}}
formstack_create_prefill_url
Create a prefilled form link
Generate a link to a live form with some fields already filled in — e.g. to send a customer a form with their name and account number pre-entered. Formstack stores the prefill and returns prefilledUrl. Formstack: POST /forms/{formId}/prefill.
Destructive
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id', 'fields'], 'properties': {'fields': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'value'], 'properties': {'id': {'type': ['string', 'number'], 'description': 'The field ID.'}, 'value': {'type': 'object', 'description': 'The field value as an object, shaped by field type: text/email/number/phone/textarea/datetime/radio → {"value":"..."}; name → {"first":"...","last":"..."} (also prefix, middle, initial, suffix); address → {"address","address2","city","state","zip","country"}; checkbox/select → {"subvalues":[{"subvalue":"..."}]}. Use formstack_list_form_fields for field IDs and types.', 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}}}, 'minItems': 1, 'description': 'Field values to prefill.'}, 'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'incomplete_password': {'type': 'string', 'description': 'Optional password protecting the prefilled entry.'}}}
formstack_create_submission
Create a submission
Submit an entry to a form on someone's behalf. This is a real submission: it counts toward the form and can fire its notification emails, webhooks and integrations. Formstack: POST /forms/{formId}/submissions.
Destructive
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id', 'fields'], 'properties': {'read': {'type': 'boolean', 'description': 'Mark the submission as read on creation.'}, 'fields': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'value'], 'properties': {'id': {'type': ['string', 'number'], 'description': 'The field ID.'}, 'value': {'type': 'object', 'description': 'The field value as an object, shaped by field type: text/email/number/phone/textarea/datetime/radio → {"value":"..."}; name → {"first":"...","last":"..."} (also prefix, middle, initial, suffix); address → {"address","address2","city","state","zip","country"}; checkbox/select → {"subvalues":[{"subvalue":"..."}]}. Use formstack_list_form_fields for field IDs and types.', 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}}}, 'minItems': 1, 'description': 'Field values to submit.'}, 'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'user_agent': {'type': 'string', 'description': "Submitter's browser user agent to record."}, 'remote_addr': {'type': 'string', 'description': "Submitter's IP address to record."}}}
formstack_create_webhook
Create a webhook
Add a webhook that POSTs each new submission of a form to your URL. Formstack: POST /forms/{formId}/webhooks.
Destructive
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id', 'url'], 'properties': {'url': {'type': 'string', 'format': 'uri', 'description': 'HTTPS URL that receives the submission data.'}, 'name': {'type': 'string', 'description': 'Webhook name.'}, 'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'hmac_secret': {'type': 'string', 'description': 'Secret used to HMAC-sign each payload.'}, 'content_type': {'enum': ['urlencoded', 'json'], 'type': 'string', 'description': 'Payload encoding.'}, 'error_emails': {'type': 'string', 'description': 'Comma-separated emails to notify on delivery failure.'}, 'file_transfer_type': {'enum': ['downloadLink', 'signedUrl', 'base64encode'], 'type': 'string', 'description': 'How uploaded files are delivered in the payload.'}, 'include_field_type': {'type': 'boolean', 'description': "Include each field's type in the payload."}, 'standardize_values': {'type': 'boolean', 'description': 'Standardize field values for consistency.'}, 'post_data_field_keys': {'enum': ['field_names', 'field_ids', 'api_friendly_field_names', 'internal_labels', 'internal_labels_api_friendly'], 'type': 'string', 'description': 'How fields are keyed in the payload.'}, 'include_subfield_names': {'type': 'boolean', 'description': 'Include subfield names in the payload.'}}}
formstack_get_folder
Get one folder
Fetch a folder with its parent, permissions and direct subfolders. Formstack: GET /folders/{folderId}.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['folder_id'], 'properties': {'folder_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The folder ID.', 'exclusiveMinimum': 0}}}
formstack_get_form
Get one form
Fetch a form's details — name, URL, submission counts, settings — optionally with its full field list. Formstack: GET /forms/{formId}.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'with_fields': {'type': 'boolean', 'description': "Include the form's fields in the response."}}}
formstack_get_submission
Get one submission
Fetch a single submission with every field's label, type, display value and parsed value, plus payment, approval and workflow status. Formstack: GET /submissions/{submissionId}.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['submission_id'], 'properties': {'submission_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The submission ID.', 'exclusiveMinimum': 0}, 'encryption_password': {'type': 'string', 'description': "Only for forms with encryption enabled: the form's encryption password, sent as the X-FS-Encryption-Password header."}}}
formstack_list_confirmation_emails
List a form's confirmation emails
List the confirmation emails sent to the person who submits a form — sender, subject, message and delay. Formstack: GET /forms/{formId}/confirmations.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}}}
formstack_list_folders
List folders
List the account's form folders and their subfolders. Formstack: GET /folders.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'properties': {'page': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 1, 'description': 'Page number, starting at 1.'}, 'per_page': {'type': 'integer', 'maximum': 500, 'minimum': 10, 'description': 'Folders per page (minimum 10).'}}}
formstack_list_form_fields
List a form's fields
List every field on a form — id, label, type, required flag, options and logic. Use this to learn field IDs before searching or creating submissions. Formstack: GET /forms/{formId}/fields.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}}}
formstack_list_forms
List forms
List the forms in the account, with submission counts, live URL and folder. Filter by name or folder and sort. Formstack: GET /forms.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'properties': {'order': {'enum': ['ASC', 'DESC'], 'type': 'string', 'description': 'Sort direction (default ASC).'}, 'folder': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': -9007199254740991, 'description': 'Only forms in this folder ID.'}, 'search': {'type': 'string', 'description': 'Match forms by name.'}, 'order_by': {'type': 'string', 'description': 'Column to order by, e.g. name, created, updated.'}, 'page_size': {'type': 'integer', 'maximum': 500, 'minimum': 10, 'description': 'Items per page, 10-500 (Formstack default 50).'}, 'page_number': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 1, 'description': 'Page number, starting at 1.'}}}
formstack_list_form_submissions
List a form's submissions
List a form's submissions, newest or oldest first, filtered by keyword, date range or specific field values. Set include_data to get the answers. Formstack: GET /forms/{formId}/submissions.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'order': {'enum': ['ASC', 'DESC'], 'type': 'string', 'description': 'Sort direction (default ASC).'}, 'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'keyword': {'type': 'string', 'description': 'Match submissions by content across all fields.'}, 'max_time': {'type': 'string', 'description': 'Only entries created on or before this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time).'}, 'min_time': {'type': 'string', 'description': 'Only entries created on or after this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time).'}, 'page_size': {'type': 'integer', 'maximum': 500, 'minimum': 10, 'description': 'Items per page, 10-500 (Formstack default 50).'}, 'data_format': {'enum': ['legacy', 'standardized'], 'type': 'string', 'description': 'Shape of data: legacy (object keyed by field id) or standardized (array of field objects).'}, 'expand_data': {'type': 'boolean', 'description': 'Include expanded field data with parsed values.'}, 'page_number': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 1, 'description': 'Page number, starting at 1.'}, 'pretty_name': {'type': 'boolean', 'description': 'Include a human-readable name per submission (from its name/email field).'}, 'include_data': {'type': 'boolean', 'description': "Include each submission's field data."}, 'field_filters': {'type': 'array', 'items': {'type': 'object', 'required': ['field_id', 'value'], 'properties': {'value': {'type': 'string', 'description': 'The value to search for in that field.'}, 'field_id': {'type': ['string', 'number'], 'description': 'The field ID to match.'}}}, 'maxItems': 10, 'description': 'Search specific fields by value (up to 10 criteria, AND-ed).'}, 'encryption_password': {'type': 'string', 'description': "Only for forms with encryption enabled: the form's encryption password, sent as the X-FS-Encryption-Password header."}}}
formstack_list_notification_emails
List a form's notification emails
List the notification emails that alert your team when a form is submitted — recipients, subject, sender and logic. Formstack: GET /forms/{formId}/notifications.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}}}
formstack_list_partial_submissions
List a form's partial submissions
List entries respondents started but did not finish (Save & Resume / abandoned), with the same filters as submissions. Formstack: GET /form/{formId}/partialsubmission.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'order': {'enum': ['ASC', 'DESC'], 'type': 'string', 'description': 'Sort direction (default ASC).'}, 'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'keyword': {'type': 'string', 'description': 'Keyword to search.'}, 'max_time': {'type': 'string', 'description': 'Only entries created on or before this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time).'}, 'min_time': {'type': 'string', 'description': 'Only entries created on or after this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time).'}, 'page_size': {'type': 'integer', 'maximum': 500, 'minimum': 10, 'description': 'Items per page, 10-500 (Formstack default 50).'}, 'expand_data': {'type': 'boolean', 'description': 'Expand data with detailed field information.'}, 'page_number': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 1, 'description': 'Page number, starting at 1.'}, 'pretty_name': {'type': 'boolean', 'description': 'Include pretty names.'}, 'include_data': {'type': 'boolean', 'description': "Include each partial submission's data."}, 'field_filters': {'type': 'array', 'items': {'type': 'object', 'required': ['field_id', 'value'], 'properties': {'value': {'type': 'string', 'description': 'The value to search for in that field.'}, 'field_id': {'type': ['string', 'number'], 'description': 'The field ID to match.'}}}, 'maxItems': 10, 'description': 'Search specific fields by value (up to 10 criteria, AND-ed).'}}}
formstack_list_submit_actions
List a form's submit actions
List what happens after a form is submitted — default processing, a custom message, or a redirect URL — with conditional logic. Formstack: GET /forms/{formId}/submitactions.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}}}
formstack_list_webhooks
List a form's webhooks
List the webhooks that push a form's submissions to external URLs, with their payload settings. Formstack: GET /forms/{formId}/webhooks.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}}}
formstack_search_submissions
Search submissions across all forms
Full-text search for submissions across every form in the account, e.g. by a person's email or name. Formstack: GET /submissions.
Read only
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['search'], 'properties': {'order': {'enum': ['ASC', 'DESC'], 'type': 'string', 'description': 'Sort direction (default ASC).'}, 'search': {'type': 'string', 'minLength': 1, 'description': 'Search term to match against submission content.'}, 'page_size': {'type': 'integer', 'maximum': 500, 'minimum': 10, 'description': 'Items per page, 10-500 (Formstack default 50).'}, 'page_number': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 1, 'description': 'Page number, starting at 1.'}}}
formstack_update_form
Update a form's settings
Rename a form, move it to a folder, change its submit-button text, timezone or language, or activate/deactivate it (with a message shown while inactive). Reversible. Formstack: PUT /forms/{formId}.
Destructive
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['form_id'], 'properties': {'name': {'type': 'string', 'minLength': 1, 'description': 'New form name.'}, 'folder': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': -9007199254740991, 'description': 'Folder ID to move the form into.'}, 'form_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The form ID.', 'exclusiveMinimum': 0}, 'language': {'type': 'string', 'description': 'Form language.'}, 'timezone': {'type': 'string', 'description': 'Form timezone.'}, 'is_active': {'type': 'boolean', 'description': 'Turn the live form on (true) or off (false).'}, 'disabled_message': {'type': 'string', 'description': 'Message shown while the form is inactive.'}, 'submit_button_title': {'type': 'string', 'description': 'Submit button text on the live form.'}}}
formstack_update_submission
Update a submission
Change field values on an existing submission, or mark it read/unread. Only the fields you pass are changed. Formstack: PUT /submissions/{submissionId}.
Destructive
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['submission_id'], 'properties': {'read': {'type': 'boolean', 'description': 'Mark the submission read (true) or unread (false).'}, 'fields': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'value'], 'properties': {'id': {'type': ['string', 'number'], 'description': 'The field ID.'}, 'value': {'type': 'object', 'description': 'The field value as an object, shaped by field type: text/email/number/phone/textarea/datetime/radio → {"value":"..."}; name → {"first":"...","last":"..."} (also prefix, middle, initial, suffix); address → {"address","address2","city","state","zip","country"}; checkbox/select → {"subvalues":[{"subvalue":"..."}]}. Use formstack_list_form_fields for field IDs and types.', 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}}}, 'minItems': 1, 'description': 'Field values to change.'}, 'submission_id': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'The submission ID.', 'exclusiveMinimum': 0}, 'encryption_password': {'type': 'string', 'description': "Only for forms with encryption enabled: the form's encryption password, sent as the X-FS-Encryption-Password header."}}}
History

Recent tool changes

Added
formstack_create_webhook
Oct. 2, 2026, 2:40 a.m.
Added
formstack_create_folder
Oct. 2, 2026, 2:40 a.m.
Added
formstack_update_form
Oct. 2, 2026, 2:40 a.m.
Added
formstack_create_prefill_url
Oct. 2, 2026, 2:40 a.m.
Added
formstack_update_submission
Oct. 2, 2026, 2:40 a.m.
Added
formstack_create_submission
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_submit_actions
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_confirmation_emails
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_notification_emails
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_webhooks
Oct. 2, 2026, 2:40 a.m.
Added
formstack_get_folder
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_folders
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_partial_submissions
Oct. 2, 2026, 2:40 a.m.
Added
formstack_get_submission
Oct. 2, 2026, 2:40 a.m.
Added
formstack_search_submissions
Oct. 2, 2026, 2:40 a.m.
Added
formstack_count_form_submissions
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_form_submissions
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_form_fields
Oct. 2, 2026, 2:40 a.m.
Added
formstack_get_form
Oct. 2, 2026, 2:40 a.m.
Added
formstack_list_forms
Oct. 2, 2026, 2:40 a.m.
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