[wallet-required, $0.001/call] Run a decision's plan through Agent402: first-party steps run directly, third-party steps are bought from the seller and resold to you (you pay on Base, or by credits or card) at the seller's price plus a disclosed markup. Priced at the plan's budget (or your maxBudgetUsd, whichever you set) less a valid execution credit; spend stops at that budget, fallbacks are tried in order, and any unspent amount comes back as a credit. A run where no step succeeds is not charged. Also runs a free plan sketch: pass the sketch's tool slugs as steps (no decisionId) with params for step 1, and each later step takes its one required input from the step before, at list price. Takes up to 3 minutes to answer: keep the connection open for at least 210 seconds, because a client that disconnects first loses the answer, or send the paid call with "Prefer: respond-async" to get a job link at once and collect the answer from it (payment still settles only on a delivered result). Returns { runId, decisionId, status, steps, budgetUsd, spentUsd, paidUsd, creditAppliedUsd }. This hosted connector holds no wallet: pay it here over MPP, or run npx agent402-mcp with a funded wallet (AGENT_KEY) or a prepaid credits key already issued (AGENT402_CREDITS_KEY), or any x402 client.