Bring Web3
to Cursor
Learn how to connect ThirdWeb to Cursor and start using 29 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the ThirdWeb MCP Server?
Connect your ThirdWeb account to any AI agent to build and manage Web3 applications through natural language. This server provides a comprehensive suite of tools for blockchain interaction and identity management.
What you can do
- Authentication & Identity — Handle email, SMS, social, and passkey logins. Link multiple social profiles to a single wallet address using
initiate_authandlink_profile. - Wallet Management — Retrieve authenticated user details, search for users by address or email, and pre-generate wallets for new users via
get_user_detailsandpregenerate_wallet. - Smart Contract Interaction — Execute read-only multicalls or state-changing transactions across any supported chain using
read_contractandwrite_contract. - Event Monitoring — Query historical contract events with advanced filtering for data analysis using
query_events.
How it works
- Subscribe to this server
- Provide your ThirdWeb Secret Key and API URL
- Start building Web3 workflows from your favorite MCP client
Who is this for?
- Web3 Developers — Rapidly prototype contract interactions and test auth flows directly from the IDE.
- DApp Operators — Manage user profiles and monitor contract events without custom scripts.
- Product Managers — Query on-chain data and user details to understand platform activity.
Built-in capabilities (29)
Broadcast a transaction on Solana
Verify challenge and complete login
Create a Solana wallet
Deploy a contract using bytecode and ABI
Execute a token swap on Solana Mainnet
Proxy a request to a paid API using x402
Generate payment requirements for a resource (x402)
Get Solana wallet balance
Get a token swap quote on Solana Mainnet
Get status of a transaction
Search for users in your project
Retrieve details of the authenticated user
Start authentication process for email, phone, passkey, or SIWE
Tie multiple social identities to a single wallet address
List Solana wallets
List transactions
Create a wallet for a user before they first log in
Fetch historical events for a contract
Fetch transaction history for a contract
Execute one or more read-only calls (multicall)
Broadcast encoded transactions
Send Solana tokens
Submit the payment on-chain (x402)
Sign a message on Solana
Sign a transaction on Solana
OAuth flow for social providers
Unlink a social identity from a wallet address
Validate a signed payment payload (x402)
Execute one or more state-changing calls atomically
Why Cursor?
Cursor's Agent mode turns ThirdWeb into an in-editor superpower. Ask Cursor to generate code using live data from ThirdWeb and it fetches, processes, and writes. all in a single agentic loop. 29 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.
- —
Agent mode turns Cursor into an autonomous coding assistant that can read files, run commands, and call MCP tools without switching context
- —
Cursor's Composer feature can generate entire files using real-time data fetched through MCP. no copy-pasting from external dashboards
- —
MCP tools appear alongside built-in tools like file reading and terminal access, creating a unified agentic environment
- —
VS Code extension compatibility means your existing workflow, keybindings, and extensions all work alongside MCP tools
ThirdWeb in Cursor
ThirdWeb and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect ThirdWeb to Cursor through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 4,000+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for ThirdWeb in Cursor
The ThirdWeb MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 29 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Cursor only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
ThirdWeb for Cursor
Every tool call from Cursor to the ThirdWeb MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I read data from a smart contract without paying gas?
Yes! Use the read_contract tool. It performs read-only calls (multicall) to the blockchain, which do not require gas or state changes.
How do I start an authentication flow for a new user?
You can use the initiate_auth tool by specifying the method (email, sms, etc.) and the user's identifier. Then, use complete_auth with the verification code to finish the login.
Can I find a user's profile if I only have their wallet address?
Absolutely. Use the get_user_details tool and provide the address parameter. The agent will return any associated user IDs, emails, or phone numbers linked to that wallet in your project.
What is Agent mode and why does it matter for MCP?
Agent mode is Cursor's autonomous execution mode where the AI can perform multi-step tasks: reading files, editing code, running terminal commands, and calling MCP tools. Without Agent mode, Cursor operates in a simpler ask-and-answer mode that doesn't support tool calling. Always ensure you're in Agent mode when working with MCP servers.
Where does Cursor store MCP configuration?
Cursor looks for MCP server configurations in a mcp.json file. You can configure servers at the project level (.cursor/mcp.json in your project root) or globally (~/.cursor/mcp.json). Project-level configs take precedence.
Can Cursor use MCP tools in inline edits?
No. MCP tools are only available in Agent mode through the chat panel. Inline completions and Tab suggestions do not trigger MCP tool calls. This is by design. tool calls require user visibility and approval.
How do I verify MCP tools are loaded?
Open Settings → Features → MCP and look for your server name. A green indicator means the server is connected. You can also check Agent mode's available tools by clicking the tools dropdown in the chat panel.
Tools not appearing in Cursor
Ensure you are in Agent mode (not Ask mode). MCP tools only work in Agent mode.
Server shows as disconnected
Check Settings → Features → MCP and verify the server status. Try clicking the refresh button.
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