1ToolRing is one key and one prepaid wallet in front of a catalog of callable tools. Your product, or an AI agent you build, searches the catalog by job, reads the price on the entry, calls it, and sees the exact charge in a response header. A failed call is never charged.
What is in the catalog
The catalog is read from the API, not from this page. Today it covers email verification, backed by MillionVerifier:
| Category | Entries | Billing |
|---|---|---|
| Verify one address, bulk jobs, job status, report, cancel, credits | 105 credits per chargeable address; job, report and credit endpoints are free |
Browse it without a key: GET https://api.1toolring.com/api/v1/catalog. See Catalog for the search and detail endpoints.
How 1ToolRing works
- One key.
Authorization: Bearer <key>on every metered call. Keys are created in the dashboard and stored as a SHA-256 hash. - One prepaid wallet. 1 credit = Rp1. Pay as you go: you top up a prepaid balance and each successful call deducts its listed price. There are no plans, subscriptions or recurring charges. See pricing.
- One price per entry. Every catalog entry carries
price_creditsandprice_unit. An entry without a verified price is refused, not served as free. - Honest charges.
X-ToolRing-Creditson the response is the amount actually charged. A non-2xx response charges 0. - Agent-ready. The same loop is available to your agent as two MCP tools,
search_catalogandcall_service, athttps://mcp.1toolring.com/mcp. See MCP.
Payments
Top-ups are paid through Polar, the merchant of record, which handles checkout, invoicing and applicable sales tax. Checkout is charged in Indonesian rupiah (IDR) in one of four amounts: Rp29.000, Rp59.000, Rp109.000 or Rp249.000. You receive exactly as many credits as the rupiah amount of the package. Credits are added only after Polar confirms the payment. See Account and billing.
Hosts
| Surface | URL |
|---|---|
| API | https://api.1toolring.com |
| MCP server | https://mcp.1toolring.com/mcp |
| Dashboard | https://app.1toolring.com |
| Product home and pricing | https://1toolring.com |
| Agent onboarding text | https://api.1toolring.com/llms.txt |
| Documentation | https://docs.1toolring.com |
1ToolRing was formerly called StudioAPI.
Security
- API keys are stored as SHA-256 hashes; the raw key is shown once at creation.
- Session tokens are HMAC-SHA256 JWTs with a 7-day expiry.
- Cloudflare Turnstile guards registration and login.
- Payment webhooks are signature-verified, and only a confirmed paid order adds credits.
- x402 receipts are single-use and recorded server-side.
- Admin actions are audited; non-admin users cannot reach admin routes.