feat: simulate sponsored txs before broadcast#150
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emmajam merged 5 commits intoJun 18, 2026
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SG, but the CI failure may require a fix on mpp-tools side ?
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Adds pre-broadcast simulation for locally co-signed sponsored Tempo charges. Before broadcasting, the server simulates the co-signed tx via
tempo_simulateV1and refuses to broadcast (fail-closed, including on RPC error) if it would revert, so the sponsor never pays gas for a failing transaction.Part of OSS-314