io.usefulapi/formstack
REMOTE · FORMSTACK.USEFULAPI.IO · SCANNED OCT 4
Browse Formstack forms, submissions and webhooks, search responses, and create submissions.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: this server exposes a tool marked destructive (formstack_create_submission) and its handshake is open, but we could not confirm whether a tool call is gated, so we do not assert it is callable unauthenticated. View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 2234 tokens (~111/item across 20 items; 20 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 20 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 20 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Unverified: 1 category
A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
How do I install the io.usefulapi/formstack MCP server?
io.usefulapi/formstack is a hosted endpoint at https://formstack.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · formstack.usefulapi.io
claude mcp add --transport http io-usefulapi-formstack 'https://formstack.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-formstack": {
"url": "https://formstack.usefulapi.io/mcp"
}
}
} {
"servers": {
"io-usefulapi-formstack": {
"type": "http",
"url": "https://formstack.usefulapi.io/mcp"
}
}
} [mcp_servers.io-usefulapi-formstack] url = "https://formstack.usefulapi.io/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"io-usefulapi-formstack": {
"type": "remote",
"url": "https://formstack.usefulapi.io/mcp",
"enabled": true
}
}
} openclaw mcp add io-usefulapi-formstack --url 'https://formstack.usefulapi.io/mcp' --transport streamable-http
mcp_servers:
io-usefulapi-formstack:
url: "https://formstack.usefulapi.io/mcp" {
"McpServers": {
"io-usefulapi-formstack": {
"Transport": "http",
"Url": "https://formstack.usefulapi.io/mcp"
}
}
} assistant mcp add io-usefulapi-formstack -t streamable-http -u 'https://formstack.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-formstack": {
"type": "http",
"url": "https://formstack.usefulapi.io/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Oct 26 +30
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- Authorization: Authorisation not fully verified: this server exposes a tool marked destructive (formstack_create_submission) and its handshake is open, but we could not confirm whether a tool call is gated, so we do not assert it is callable unauthenticated. security
- MCP protocol: unverified → fail ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- First check of Schema quality: fail functional
- First check of Schema quality: excellent functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: fail functional
- First check of Tool coverage: 100 functional
- 2 Oct 26 +5
- HTTPS: unverified → pass ▲ security
- 1 Oct 26 0
- Tool safety: Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list. security
- Tool coverage: Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list. functional
- Capabilities: Capabilities not yet verified: we couldn't read the endpoint's capabilities. functional
- Schema quality: Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list. functional
- 30 Sept 26 +10
- Transport: fail → pass ▲ security
- Authorization: Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the whole tool list to see what that exposes. security
- Tool safety: Tool safety blocked by authentication: the endpoint requires auth we don't have to read its tools. security
- Tool coverage: Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools. functional
- Schema quality: Schema blocked by authentication: the endpoint requires auth we don't have to read it. functional
- Capabilities: Capabilities blocked by authentication: the endpoint requires auth we don't have to read them. functional
- 29 Sept 26 18
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Oct 2026 · Probed https://formstack.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of formstack.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://formstack.usefulapi.io/mcp | Verified | 200 | |
| http (plaintext) | http://formstack.usefulapi.io/mcp | HTTPS enforced | 301 | https://formstack.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
formstack_count_form_submissions Count a form's submissions ~102
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.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
| lookback_period | integer | – | How many days to count backwards (maximum 7). |
| start_date | string | – | Date to count from, e.g. 2026-09-01. |
No output schema declared.
No examples provided.
formstack_create_folder Create a folder ~57
Create a folder for organising forms, at the root or inside a parent folder. Formstack: POST /folders.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Folder name. |
| parent | integer | – | Parent folder ID (omit for root level). |
No output schema declared.
No examples provided.
formstack_create_prefill_url Create a prefilled form link ~108
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.
| Name | Type | Req | Description |
|---|---|---|---|
| fields | array | yes | Field values to prefill. |
| form_id | integer | yes | The form ID. |
| incomplete_password | string | – | Optional password protecting the prefilled entry. |
No output schema declared.
No examples provided.
formstack_create_submission Create a submission ~123
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.
| Name | Type | Req | Description |
|---|---|---|---|
| fields | array | yes | Field values to submit. |
| form_id | integer | yes | The form ID. |
| read | boolean | – | Mark the submission as read on creation. |
| remote_addr | string | – | Submitter's IP address to record. |
| user_agent | string | – | Submitter's browser user agent to record. |
No output schema declared.
No examples provided.
formstack_create_webhook Create a webhook ~203
Add a webhook that POSTs each new submission of a form to your URL. Formstack: POST /forms/{formId}/webhooks.
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | – | Payload encoding. |
| error_emails | string | – | Comma-separated emails to notify on delivery failure. |
| file_transfer_type | string | – | How uploaded files are delivered in the payload. |
| form_id | integer | yes | The form ID. |
| hmac_secret | string | – | Secret used to HMAC-sign each payload. |
| include_field_type | boolean | – | Include each field's type in the payload. |
| include_subfield_names | boolean | – | Include subfield names in the payload. |
| name | string | – | Webhook name. |
| post_data_field_keys | string | – | How fields are keyed in the payload. |
| standardize_values | boolean | – | Standardize field values for consistency. |
| url | string | yes | HTTPS URL that receives the submission data. |
No output schema declared.
No examples provided.
formstack_get_folder Get one folder ~44
Fetch a folder with its parent, permissions and direct subfolders. Formstack: GET /folders/{folderId}.
| Name | Type | Req | Description |
|---|---|---|---|
| folder_id | integer | yes | The folder ID. |
No output schema declared.
No examples provided.
formstack_get_form Get one form ~69
Fetch a form's details — name, URL, submission counts, settings — optionally with its full field list. Formstack: GET /forms/{formId}.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
| with_fields | boolean | – | Include the form's fields in the response. |
No output schema declared.
No examples provided.
formstack_get_submission Get one submission ~90
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}.
| Name | Type | Req | Description |
|---|---|---|---|
| encryption_password | string | – | Only for forms with encryption enabled: the form's encryption password, sent as the X-FS-Encryption-Password header. |
| submission_id | integer | yes | The submission ID. |
No output schema declared.
No examples provided.
formstack_list_confirmation_emails List a form's confirmation emails ~57
List the confirmation emails sent to the person who submits a form — sender, subject, message and delay. Formstack: GET /forms/{formId}/confirmations.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
No output schema declared.
No examples provided.
formstack_list_folders List folders ~59
List the account's form folders and their subfolders. Formstack: GET /folders.
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number, starting at 1. |
| per_page | integer | – | Folders per page (minimum 10). |
No output schema declared.
No examples provided.
formstack_list_form_fields List a form's fields ~66
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.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
No output schema declared.
No examples provided.
formstack_list_form_submissions List a form's submissions ~326
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.
| Name | Type | Req | Description |
|---|---|---|---|
| data_format | string | – | Shape of data: legacy (object keyed by field id) or standardized (array of field objects). |
| encryption_password | string | – | Only for forms with encryption enabled: the form's encryption password, sent as the X-FS-Encryption-Password header. |
| expand_data | boolean | – | Include expanded field data with parsed values. |
| field_filters | array | – | Search specific fields by value (up to 10 criteria, AND-ed). |
| form_id | integer | yes | The form ID. |
| include_data | boolean | – | Include each submission's field data. |
| keyword | string | – | Match submissions by content across all fields. |
| max_time | string | – | Only entries created on or before this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time). |
| min_time | string | – | Only entries created on or after this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time). |
| order | string | – | Sort direction (default ASC). |
| page_number | integer | – | Page number, starting at 1. |
| page_size | integer | – | Items per page, 10-500 (Formstack default 50). |
| pretty_name | boolean | – | Include a human-readable name per submission (from its name/email field). |
No output schema declared.
No examples provided.
formstack_list_forms List forms ~135
List the forms in the account, with submission counts, live URL and folder. Filter by name or folder and sort. Formstack: GET /forms.
| Name | Type | Req | Description |
|---|---|---|---|
| folder | integer | – | Only forms in this folder ID. |
| order | string | – | Sort direction (default ASC). |
| order_by | string | – | Column to order by, e.g. name, created, updated. |
| page_number | integer | – | Page number, starting at 1. |
| page_size | integer | – | Items per page, 10-500 (Formstack default 50). |
| search | string | – | Match forms by name. |
No output schema declared.
No examples provided.
formstack_list_notification_emails List a form's notification emails ~57
List the notification emails that alert your team when a form is submitted — recipients, subject, sender and logic. Formstack: GET /forms/{formId}/notifications.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
No output schema declared.
No examples provided.
formstack_list_partial_submissions List a form's partial submissions ~244
List entries respondents started but did not finish (Save & Resume / abandoned), with the same filters as submissions. Formstack: GET /form/{formId}/partialsubmission.
| Name | Type | Req | Description |
|---|---|---|---|
| expand_data | boolean | – | Expand data with detailed field information. |
| field_filters | array | – | Search specific fields by value (up to 10 criteria, AND-ed). |
| form_id | integer | yes | The form ID. |
| include_data | boolean | – | Include each partial submission's data. |
| keyword | string | – | Keyword to search. |
| max_time | string | – | Only entries created on or before this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time). |
| min_time | string | – | Only entries created on or after this date/time: YYYY-MM-DD or YYYY-MM-DD HH:MM:SS (Eastern Time). |
| order | string | – | Sort direction (default ASC). |
| page_number | integer | – | Page number, starting at 1. |
| page_size | integer | – | Items per page, 10-500 (Formstack default 50). |
| pretty_name | boolean | – | Include pretty names. |
No output schema declared.
No examples provided.
formstack_list_submit_actions List a form's submit actions ~60
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.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
No output schema declared.
No examples provided.
formstack_list_webhooks List a form's webhooks ~54
List the webhooks that push a form's submissions to external URLs, with their payload settings. Formstack: GET /forms/{formId}/webhooks.
| Name | Type | Req | Description |
|---|---|---|---|
| form_id | integer | yes | The form ID. |
No output schema declared.
No examples provided.
formstack_search_submissions Search submissions across all forms ~104
Full-text search for submissions across every form in the account, e.g. by a person's email or name. Formstack: GET /submissions.
| Name | Type | Req | Description |
|---|---|---|---|
| order | string | – | Sort direction (default ASC). |
| page_number | integer | – | Page number, starting at 1. |
| page_size | integer | – | Items per page, 10-500 (Formstack default 50). |
| search | string | yes | Search term to match against submission content. |
No output schema declared.
No examples provided.
formstack_update_form Update a form's settings ~160
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}.
| Name | Type | Req | Description |
|---|---|---|---|
| disabled_message | string | – | Message shown while the form is inactive. |
| folder | integer | – | Folder ID to move the form into. |
| form_id | integer | yes | The form ID. |
| is_active | boolean | – | Turn the live form on (true) or off (false). |
| language | string | – | Form language. |
| name | string | – | New form name. |
| submit_button_title | string | – | Submit button text on the live form. |
| timezone | string | – | Form timezone. |
No output schema declared.
No examples provided.
formstack_update_submission Update a submission ~116
Change field values on an existing submission, or mark it read/unread. Only the fields you pass are changed. Formstack: PUT /submissions/{submissionId}.
| Name | Type | Req | Description |
|---|---|---|---|
| encryption_password | string | – | Only for forms with encryption enabled: the form's encryption password, sent as the X-FS-Encryption-Password header. |
| fields | array | – | Field values to change. |
| read | boolean | – | Mark the submission read (true) or unread (false). |
| submission_id | integer | yes | The submission ID. |
No output schema declared.
No examples provided.
What is the io.usefulapi/formstack MCP server?
io.usefulapi/formstack is an MCP server listed in the public MCP registry as io.usefulapi/formstack. Browse Formstack forms, submissions and webhooks, search responses, and create submissions. This page covers its hosted endpoint (https://formstack.usefulapi.io/mcp).
Is the io.usefulapi/formstack MCP server safe to use?
io.usefulapi/formstack scores 63 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.usefulapi/formstack MCP server expose?
io.usefulapi/formstack exposes 20 tools: formstack_list_forms, formstack_get_form, formstack_list_form_fields, formstack_list_form_submissions, formstack_count_form_submissions, and 15 more. Their descriptions and schemas cost roughly 2,234 tokens of context every time the server is loaded.
Does the io.usefulapi/formstack MCP server require authentication?
No. We connected to io.usefulapi/formstack without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the io.usefulapi/formstack MCP server still maintained?
io.usefulapi/formstack is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.