Event Resolver X402

What is Event Resolver X402?

Event Resolver X402 is an MCP server that resolves prediction market events by aggregating news, price feeds, and web data to determine real-world outcomes with confidence scores. It serves as a settlement oracle for binary, numeric, and categorical outcomes, with pay-per-call billing via x402 (USDC on Base L2) – no API key, signup, or rate limits required.

How to use Event Resolver X402?

Add the server URL to your MCP client config (e.g., Claude Desktop, Cursor, ElizaOS) as shown in the README. Use the provided tools: event_resolve_outcome, event_verify_claim, or event_check_price_threshold. For HTTP usage, send a POST request to the API endpoint; an x402‑aware client automatically handles the payment challenge.

Key features of Event Resolver X402

• Pay-per-call micropayments via x402 (USDC on Base L2)
• No API key, signup, or rate limits
• Resolves binary, numeric, and categorical outcomes
• Aggregates multiple data sources with confidence scores
• Three specialized tools: resolve, verify, price‑threshold check
• Returns structured responses with sources and timestamps

Use cases of Event Resolver X402

• Settle prediction market outcomes for AI agents
• Quickly verify factual claims (e.g., “Bitcoin is above $90,000”)
• Check if a crypto or stock price crossed a threshold
• Automate event resolution in agent workflows
• Integrate x402‑payable oracle calls into dApps

FAQ from Event Resolver X402

What payment model does Event Resolver X402 use?

It uses the x402 protocol – HTTP-native pay-per-call with USDC on Base L2 (eip155:8453). No signup, subscription, or API key needed.

What are the prerequisites for using Event Resolver X402?

You need an MCP client (Claude Desktop, Cursor, ElizaOS, etc.) or an x402‑aware HTTP client like @x402/fetch or x402-agent-tools.

What data sources does Event Resolver X402 use?

It aggregates news, price feeds, and web data to determine outcomes. Specific sources are returned in the sources array of each response.

What are the limitations of Event Resolver X402?

It is not designed for prediction market odds, general crypto prices, full fact-checking with sources, or trust/security scoring – separate APIs are available for those use cases.

Does Event Resolver X402 support all event types?

Yes, it supports binary (Yes/No), numeric (a number), and categorical (one of several options) outcomes. The default type is binary.