List forms and read submissions; create submissions in Web3Forms. For site owners who collect form messages with Web3Forms. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"web3forms": {
"url": "https://web3forms.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"web3forms": {
"type": "http",
"url": "https://web3forms.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
List the submissions of a form and ask the assistant for a short summary.
web3forms_list_forms web3forms_list_submissions
Read a single submission with all its fields.
web3forms_get_submission
Create a submission, for example from a phone call, so it is in the same inbox.
Changes data · web3forms_list_forms web3forms_create_submission
The login page asks for your Web3Forms Submissions API key.
Find it in Web3Forms → Dashboard → Account → API Keys (Pro plan). Tick Create submissions only if you want the assistant to create submissions. Your key is used only to call the API on your behalf and to derive a private account id; it is never shown to anyone.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Web3Forms Submissions API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Turn on the Web3Forms connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
web3forms_list_forms | read | List forms List all Web3Forms forms in the account: form_id, form_name, created_at and total_count of submissions. Good first call to find a form_id. API: GET /forms. |
web3forms_list_submissions | read | List submissions List submissions of one form, newest first, with fields, submitter IP address, user agent, site_url and attachments. Returns has_more and next_cursor: pass next_cursor as cursor to get the next page. API: GET /submissions. |
web3forms_get_submission | read | Get a submission Get one submission by id (for example sub_a1b2c3d4e5f6), with its fields, IP address, user agent, site_url and attachments. API: GET /submissions/{id}. |
web3forms_create_submission | write | Create a submission WRITE: create a submission on a form you own, as if a visitor sent it. It is stored, counts toward the monthly quota, and sends the notification email, autoresponder and integrations. Needs a key with the 'Create submissions' permission. There is NO idempotency key: if a call times out, check web3forms_list_submissions before you retry, or you may create a duplicate. API: POST /submissions. |
web3forms_usage_status | Usage status (free-tier meter) Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. | |
web3forms_request_feature | Request a missing feature Tell usefulapi that the user needs something the Web3Forms tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
web3forms_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Web3Forms (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $39/month or $390/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
web3forms_cancel_subscription | Cancel the Pro subscription Cancel the caller's Web3Forms Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run web3forms_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Web3Forms server only. Subscribe with web3forms_upgrade (it returns a Stripe Checkout link). Cancel any time with web3forms_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running web3forms_upgrade before then undoes the cancel. Or write to [email protected].
Read the latest form submissions. Open one submission. Add a submission by hand. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Web3Forms. The server calls the Web3Forms API with your own Web3Forms access, so it sees only the data that your account can see.
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
The login page asks for your Web3Forms Submissions API key. See Before you connect for where to find it.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Web3Forms Submissions API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Web3Forms API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Web3Forms.
Yes, if you approve it. 1 of the 4 Web3Forms tools can create or change data. The other 3 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Web3Forms server only. Cancel any time: Pro then runs to the end of the paid period. Run web3forms_usage_status to see how many calls you used.
Ask the AI to run web3forms_upgrade: it returns a Stripe Checkout link. To cancel, run web3forms_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with web3forms_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.