# Chainscope > Investigate transactions, bridges, contracts, DAOs and wallets in one case file. Chainscope is a web3 investigation desk that turns fifteen usefulweb.site blockchain tools into one case file. Collect wallets, contracts, transaction hashes and DAO spaces, run decoders, bridge trackers, upgrade and permission checks, incident replays, MEV, gas, stablecoin, rollup and token-unlock explorers on them, and read one dashboard of findings with a merged entity graph, a timeline with calendar reminders, run-to-run comparisons and a printable report. Results feed the next step: a decoded transaction suggests the MEV check of its block, an upgradeable proxy suggests a look at its implementation and admin. Chainscope (Web3 investigation desk) is a premium app of usefulweb.app (https://usefulweb.app/): a full program that runs in the browser. Its engine is deterministic and the same functions are exposed as tools, so an agent can compute exactly what the app shows. ## Use it - Landing page: https://chainscope.usefulweb.app/ - Workspace (browser app): https://chainscope.usefulweb.app/app - open a project with https://chainscope.usefulweb.app/app#project= or a template with https://chainscope.usefulweb.app/app#template= - Project file format (JSON Schema): https://chainscope.usefulweb.app/project.schema.json - Tutorials: https://chainscope.usefulweb.app/tutorials - JSON API: POST https://chainscope.usefulweb.app/api/v1/tools//calculate (catalog: https://chainscope.usefulweb.app/api/v1/tools) - OpenAPI: https://chainscope.usefulweb.app/openapi.json - MCP (Streamable HTTP): https://chainscope.usefulweb.app/mcp ## Engine tools - [Transaction Decoder](https://transactiondecoder.usefulweb.app/): See what an EVM transaction actually did: call, events, token transfers, fee, finality. API: POST https://chainscope.usefulweb.app/api/v1/tools/transaction-decoder/calculate · MCP tool `transaction_decoder` - [Bridge Transfer Tracker](https://bridgetransfertracker.usefulweb.app/): Where is my bridged money? Finds the bridge deposit in a transaction and checks if it arrived. API: POST https://chainscope.usefulweb.app/api/v1/tools/bridge-transfer-tracker/calculate · MCP tool `bridge_transfer_tracker` - [Cross-Chain Transaction Explorer](https://crosschaintransactionexplorer.usefulweb.app/): Follow one transaction across chains: source tx, bridge deposit and destination fill on a timeline. API: POST https://chainscope.usefulweb.app/api/v1/tools/cross-chain-transaction-explorer/calculate · MCP tool `cross_chain_transaction_explorer` - [Account Abstraction Explorer](https://accountabstractionexplorer.usefulweb.app/): Decode ERC-4337 bundles: UserOperations, paymasters, gas per op, deployed smart accounts. API: POST https://chainscope.usefulweb.app/api/v1/tools/account-abstraction-explorer/calculate · MCP tool `account_abstraction_explorer` - [Blockchain Incident Replay](https://blockchainincidentreplay.usefulweb.app/): Replay an exploit from tx hashes: ordered timeline, fund-flow graph and who profited. API: POST https://chainscope.usefulweb.app/api/v1/tools/blockchain-incident-replay/calculate · MCP tool `blockchain_incident_replay` - [Smart Contract Upgrade Explorer](https://contractupgradeexplorer.usefulweb.app/): Is this smart contract upgradeable, who controls upgrades, and what changed? API: POST https://chainscope.usefulweb.app/api/v1/tools/contract-upgrade-explorer/calculate · MCP tool `contract_upgrade_explorer` - [Smart Contract Relationship Graph](https://smartcontractrelationshipgraph.usefulweb.app/): Map a contract's proxy, implementation, admin, owner, deployer/factory and token links as a graph. API: POST https://chainscope.usefulweb.app/api/v1/tools/smart-contract-relationship-graph/calculate · MCP tool `smart_contract_relationship_graph` - [Wallet Permission Explorer](https://walletpermissionexplorer.usefulweb.app/): Who can move your tokens? Allowances, Permit2, NFT operators and EIP-7702 delegation, with risk. API: POST https://chainscope.usefulweb.app/api/v1/tools/wallet-permission-explorer/calculate · MCP tool `wallet_permission_explorer` - [DeFi Liquidation Explorer](https://defiliquidationexplorer.usefulweb.app/): Recent Aave V3 liquidations in USD, who liquidated whom, and a live health-factor check. API: POST https://chainscope.usefulweb.app/api/v1/tools/defi-liquidation-explorer/calculate · MCP tool `defi_liquidation_explorer` - [DAO Governance Explorer](https://daogovernanceexplorer.usefulweb.app/): Snapshot proposals, vote concentration, Governor state and treasury balances in one view. API: POST https://chainscope.usefulweb.app/api/v1/tools/dao-governance-explorer/calculate · MCP tool `dao_governance_explorer` - [Token Unlock Explorer](https://tokenunlockexplorer.usefulweb.app/): Model token vesting (cliff, linear, monthly, tranches, TGE) or audit a VestingWallet. API: POST https://chainscope.usefulweb.app/api/v1/tools/token-unlock-explorer/calculate · MCP tool `token_unlock_explorer` - [Gas Fee Intelligence Explorer](https://gasfeeintelligenceexplorer.usefulweb.app/): Live gas on 7 EVM chains: base fee, tips, trend and the USD cost of transfers and swaps. API: POST https://chainscope.usefulweb.app/api/v1/tools/gas-fee-intelligence-explorer/calculate · MCP tool `gas_fee_intelligence_explorer` - [Stablecoin Flow Explorer](https://stablecoinflowexplorer.usefulweb.app/): USDC/USDT supply per chain, recent mints, burns and whale transfers, cross-chain totals. API: POST https://chainscope.usefulweb.app/api/v1/tools/stablecoin-flow-explorer/calculate · MCP tool `stablecoin_flow_explorer` - [MEV Explorer](https://mevexplorer.usefulweb.app/): Who extracted value in this block? Sandwiches, arbitrage, liquidations, builder and tips. API: POST https://chainscope.usefulweb.app/api/v1/tools/mev-explorer/calculate · MCP tool `mev_explorer` - [Rollup Batch Explorer](https://rollupbatchexplorer.usefulweb.app/): How L2 transactions reach Ethereum: unsafe → safe → finalized, blobs, batch costs, withdrawal waits. API: POST https://chainscope.usefulweb.app/api/v1/tools/rollup-batch-explorer/calculate · MCP tool `rollup_batch_explorer` ## Formats - Import: Chainscope case (.chainscope.json), Text or CSV with addresses, transaction hashes and Snapshot spaces, Case link (#project=…), Text from other apps (App Bridge) - Export: Chainscope case (.chainscope.json), Findings CSV and JSON, Address book CSV, Batch results CSV, Case report (Markdown), Reminders calendar (.ics), Case graph (SVG, PNG), Printable report (PDF via print) ## Limits - Chainscope reads public chain data only; it does not connect wallets, sign, revoke or trade. - Supported chains are those of the tools: Ethereum, Base, Arbitrum, Optimism, Polygon, Avalanche and BNB Chain (the cross-chain explorer also reads Solana signatures). - Public RPC nodes limit log ranges and history; large scans can fail, and some tools then need pasted data or a smaller window. - Runs go through the tool API rate limit (about 15 web3 requests per minute); batch runs wait and resume. - Suspect attribution, MEV detection and risk ratings are heuristics of the tools; they are not legal or financial advice. - Full tool outputs are cached in this browser only; case files and links keep the compact digest, findings and metrics. - On phones the workspace is a single column; the graph and long tables are easier on a larger screen.