{"openapi":"3.1.0","info":{"title":"Prism MCP","version":"1.3.0","description":"Mode: paywall. Paid per call with x402, or by time on a line. Paid MCP endpoint over x402, sold with ZEAM :: Pass. USDC on Base. Tools: audit_cluster, audit_funders, audit_payers, buy_time and call_rpc are paid; get_operator, get_payment_terms, line, notes_post, notes_read, notes_sign and sample_rpc are free and need no wallet.","x-guidance":"1 micro-USD per millisecond a call runs on a line: $0.000250 per 250 ms block. A paid call without a line costs one block, $0.000250, and runs at most 250 ms. buy_time {blocks} buys blocks for the channel that pays. POST /line {\"op\":\"open\",\"channelId\"} returns a message; sign it with the payer key and POST {\"op\":\"prove\",\"channelId\",\"nonce\",\"signature\"} for a credential. Send it as the x-line header (HTTP), or _meta[\"zeam-pass/line\"] or the line argument (MCP). sample_rpc and the notes tools are free: 60 calls an hour per address per tool. line, get_payment_terms and get_operator are free and unlimited. First call on a channel deposits at least $0.002903. Later calls spend it. The unspent balance is refundable.","contact":{"email":"info@zeamlabs.com"}},"servers":[{"url":"https://mcp.zeamprism.com"}],"components":{"securitySchemes":{"x402":{"type":"apiKey","in":"header","name":"PAYMENT-SIGNATURE","description":"x402: the 402 answer carries the terms (accepts); pay them and send the signed payment in this header. Batch-settlement on eip155:8453, USDC. No account, no API key. X-PAYMENT is read too. 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