{"ok":true,"host":"arbitrum-mpp-transaction-preflight-production.up.railway.app","status":"ready","manifest":{"positioning":"arbitrum-mpp-transaction-preflight-production.up.railway.app is a narrow, single-purpose preflight service for Arbitrum One. It serves agents and developers who need to dry-run transactions to catch failures, estimate costs, and assess risk before committing to on-chain execution. It does not execute transactions and does not support any chain other than Arbitrum One.","host_overview":"This host exposes a single endpoint that simulates Ethereum-compatible transactions on Arbitrum One (chainId 42161) before they are broadcast. It returns gas estimates, simulation success/failure, return data, target classification (contract vs EOA), and risk signals — all without spending gas or altering chain state.","routing_guidance":"Use this host when an agent needs to validate a transaction on Arbitrum One before broadcasting — specifically to check gas cost, detect likely revert conditions, classify the target address, or assess risk without spending gas. Do not use it for transactions on Ethereum mainnet, Optimism, Base, Polygon, or any other EVM chain; chain-specific preflight services or general-purpose simulation tools (e.g., Tenderly, Alchemy Simulation API) would be needed for those networks. Do not treat simulation success as a guarantee of on-chain success — final state may differ due to block-level changes between simulation and submission. This host is not a transaction broadcaster and cannot submit transactions to the network.","capability_clusters":[{"skill_names":["preflight-arbitrum-transaction"],"cluster_name":"Transaction Simulation","cluster_summary":"Simulates a transaction on Arbitrum One and returns chain metadata, gas estimates, simulation outcome, target type classification, and risk signals — enabling safe pre-submission validation."}],"cross_skill_workflows":[]},"model":"claude-sonnet-4-6","version_no":1,"generated_at":"2026-07-20T20:17:24.800Z","provenance":"ai_authored_unreviewed","ai_authored":true,"merchant_reviewed":false,"merchant_edited":false,"merchant_reviewed_at":null,"merchant_edited_at":null,"skill_md_url":"https://x402gle.com/servers/arbitrum-mpp-transaction-preflight-production.up.railway.app/SKILL.md","skills_url":"https://x402gle.com/servers/arbitrum-mpp-transaction-preflight-production.up.railway.app/skills.json"}