Search properties, clients and tasks; create and update clients and agenda tasks in Wasi. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the Wasi connector, then ask in plain words. The AI picks the tools.
For real-estate agents in Latin America who run listings, clients and agenda tasks in Wasi.
Search the properties with filters for sale, rent, type, location, price and bedrooms. Open one property for its full detail.
Read one client's contact details, status and type. List the properties linked to that client, with the relation of each.
List the agenda tasks assigned between two dates, such as the calls and meetings of the week. Read one task, or list the users to see who owns it.
Search the clients first, to see whether the lead already exists. Then create the client with the Wasi field names, such as first_name.
Changes dataLink a client to a property with a relation type, such as owner or buyer. The link changes the live CRM data of the account.
Changes dataCreate an agenda task for a user and a client, with the Wasi field names such as subject, date and id_user. The task changes the live account data.
Changes dataThe login page asks for your id_company (numeric company id) and wasi_token.
In Wasi, open Configuración / Ajustes generales, find the API de Wasi section, and click Generar token. The API needs a Wasi Pro plan. Your values are used only to call the API on your behalf; they are never shown to anyone.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"wasi": {
"url": "https://wasi.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"wasi": {
"type": "http",
"url": "https://wasi.usefulapi.io/mcp"
}
}
} Run these commands. The second one opens the login page:
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
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 id_company (numeric company id) and wasi_token. 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.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per user | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Wasi server only. Ask your AI to run wasi_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with wasi_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with wasi_upgrade before then undoes the cancel. Or write to [email protected].
wasi_search_propertieswasi_get_propertywasi_list_property_clientswasi_list_property_documentswasi_list_property_typeswasi_search_clientswasi_get_clientwasi_list_client_propertieswasi_list_client_typeswasi_list_taskswasi_get_taskwasi_list_userswasi_create_clientwasi_update_clientwasi_link_client_to_propertywasi_update_propertywasi_create_taskwasi_update_taskwasi_delete_taskwasi_usage_statuswasi_request_featurewasi_upgradewasi_cancel_subscriptionSearch listings for sale or rent. Read a client and the properties linked to it. Review the agenda for the week. Add a new client from a lead. Link a client to a property. Create a follow-up task for an agent. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Wasi. The server calls the Wasi API with your own Wasi 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 id_company (numeric company id) and wasi_token. See Before you connect for where to find them.
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 id_company (numeric company id) and wasi_token. 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 Wasi 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 Wasi.
Yes, if you approve it. 7 of the 19 Wasi tools can create or change data. The other 12 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 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Wasi server only. Cancel any time: your paid plan then runs to the end of the paid period. Run wasi_usage_status to see how many calls you used.
Ask the AI to run wasi_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run wasi_cancel_subscription. Your paid plan continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with wasi_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.