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Web3 investigation desk

Chainscope

Investigate transactions, bridges, contracts, DAOs and wallets in one case file.

Launch Chainscope → Tutorials

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.

Free · runs in your browser · no sign-up · Version 1.0.0

Screenshots

Features

  • One case file per investigation

    Wallets, contracts, transaction hashes, tokens and DAO spaces in an address book with labels, flags (suspect, victim, trusted, watch) and tags, next to the checks that ran on them and a timestamped case journal.

  • Fifteen web3 tools, one desk

    Transaction decoder, bridge tracker, cross-chain explorer, ERC-4337 explorer, incident replay, upgrade and relationship graphs, wallet permissions, Aave liquidations, DAO governance, token unlocks, gas, stablecoin flows, MEV and rollup batches.

  • Playbooks

    Pick a transaction, contract, wallet or DAO and add the matching checks in one go: “Investigate a transaction” decodes it, tracks bridges, follows cross-chain hops and inspects smart-account bundles.

  • Results feed the next step

    Every result suggests follow-up checks with its own data: the block of a decoded transaction goes to the MEV explorer, a proxy’s implementation and admin to the upgrade check, a bridge’s destination transaction to the decoder.

  • Findings dashboard

    All results become severity-ranked findings — reverted transactions, stuck bridge transfers, single-key upgrade admins, unlimited approvals, sandwiches, liquidatable borrowers, concentrated votes, near unlocks — with filters and a jump to the check.

  • Merged case graph

    The graphs of all tools in one picture: addresses are merged across checks, labelled from your address book and coloured by flag; export it as SVG or PNG.

  • Cross-references

    Chainscope lists every address and hash the tools returned, with its roles and the checks it appears in, so the wallet that shows up in three results stands out. Add it to the address book with one click.

  • Changes over time

    Each check keeps its run history: new and resolved findings, changed metrics and sparklines show what moved between yesterday’s and today’s gas, supply, approvals or health factor. Stale live results are marked.

  • Scenario A/B

    Compare two checks or two runs side by side — two contracts, two chains, before and after a revoke — metric by metric, with the findings only one side has.

  • Batch runs

    Paste up to 50 transaction hashes or addresses and run the same check over each, with progress, rate-limit waits, a result table and a CSV.

  • Timeline and reminders

    Incident transactions, cross-chain hops, liquidations, proposal deadlines, token unlocks and your re-check dates on one timeline, exported as an .ics calendar with alarms.

  • Consolidated report

    A printable case report (PDF via print) with findings, address book, checks, timeline, graph and journal, plus CSV, JSON, Markdown, SVG and PNG exports.

  • Live or pasted data

    Each check reads the chain live or decodes pasted receipts, logs, bytecode or block JSON — useful for archived incidents, private RPC exports and offline demos. Earlier results stay readable without a connection.

  • Cases that travel

    Autosave and recent cases in your browser, case files, share links, undo/redo, six templates and Google Drive saving.

  • API, MCP & App Bridge

    Every tool is available through the JSON API and MCP on the app host; findings, tables, reports and the graph go to other premium apps, and text with addresses or hashes comes in from them.

Templates

Start from a ready-made project and change it to fit.

Built-in tools

Chainscope uses these tools. Each one also has its own page and works on its own, in the browser, through the JSON API and through MCP.

For AI agents

Chainscope runs on a deterministic engine. The same functions are available as tools with a JSON API and MCP, so scripts and AI agents get exactly the results the app shows.

  • Transaction Decoder – See what an EVM transaction actually did: call, events, token transfers, fee, finality.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/transaction-decoder/calculate · MCP transaction_decoder
  • Bridge Transfer Tracker – Where is my bridged money? Finds the bridge deposit in a transaction and checks if it arrived.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/bridge-transfer-tracker/calculate · MCP bridge_transfer_tracker
  • Cross-Chain Transaction Explorer – Follow one transaction across chains: source tx, bridge deposit and destination fill on a timeline.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/cross-chain-transaction-explorer/calculate · MCP cross_chain_transaction_explorer
  • Account Abstraction Explorer – Decode ERC-4337 bundles: UserOperations, paymasters, gas per op, deployed smart accounts.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/account-abstraction-explorer/calculate · MCP account_abstraction_explorer
  • Blockchain Incident Replay – Replay an exploit from tx hashes: ordered timeline, fund-flow graph and who profited.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/blockchain-incident-replay/calculate · MCP blockchain_incident_replay
  • Smart Contract Upgrade Explorer – Is this smart contract upgradeable, who controls upgrades, and what changed?
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/contract-upgrade-explorer/calculate · MCP contract_upgrade_explorer
  • Smart Contract Relationship Graph – Map a contract's proxy, implementation, admin, owner, deployer/factory and token links as a graph.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/smart-contract-relationship-graph/calculate · MCP smart_contract_relationship_graph
  • Wallet Permission Explorer – Who can move your tokens? Allowances, Permit2, NFT operators and EIP-7702 delegation, with risk.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/wallet-permission-explorer/calculate · MCP wallet_permission_explorer
  • DeFi Liquidation Explorer – Recent Aave V3 liquidations in USD, who liquidated whom, and a live health-factor check.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/defi-liquidation-explorer/calculate · MCP defi_liquidation_explorer
  • DAO Governance Explorer – Snapshot proposals, vote concentration, Governor state and treasury balances in one view.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/dao-governance-explorer/calculate · MCP dao_governance_explorer
  • Token Unlock Explorer – Model token vesting (cliff, linear, monthly, tranches, TGE) or audit a VestingWallet.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/token-unlock-explorer/calculate · MCP token_unlock_explorer
  • Gas Fee Intelligence Explorer – Live gas on 7 EVM chains: base fee, tips, trend and the USD cost of transfers and swaps.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/gas-fee-intelligence-explorer/calculate · MCP gas_fee_intelligence_explorer
  • Stablecoin Flow Explorer – USDC/USDT supply per chain, recent mints, burns and whale transfers, cross-chain totals.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/stablecoin-flow-explorer/calculate · MCP stablecoin_flow_explorer
  • MEV Explorer – Who extracted value in this block? Sandwiches, arbitrage, liquidations, builder and tips.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/mev-explorer/calculate · MCP mev_explorer
  • Rollup Batch Explorer – How L2 transactions reach Ethereum: unsafe → safe → finalized, blobs, batch costs, withdrawal waits.
    Tool page · POST https://chainscope.usefulweb.site/api/v1/tools/rollup-batch-explorer/calculate · MCP rollup_batch_explorer

Build a project through the API, then open it in the app with a link to https://chainscope.usefulweb.site/app#project=<base64url JSON>.

Import & export

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)

Keyboard shortcuts

Keyboard shortcuts in Chainscope
KeysAction
Ctrl + EnterRun the selected check
Ctrl + Shift + EnterRun all checks
Ctrl + Z / Ctrl + YUndo / redo
Ctrl + SSave case file
Ctrl + OOpen case file
Ctrl + DDuplicate the selected check
Alt + ↑ / Alt + ↓Previous / next check
1 … 7Check, dashboard, address book, graph, timeline, compare, report
NAdd a check
EAdd an entity
/Search the checks
?Keyboard shortcuts

Frequently asked questions

Where does the chain data come from?

From the usefulweb.site tools: they read public RPC nodes of Ethereum, Base, Arbitrum, Optimism, Polygon, Avalanche and BNB Chain, Sourcify for verified ABIs, Snapshot for proposals and DefiLlama for prices, as described on each tool page. Chainscope itself stores nothing on a server: your case stays in this browser unless you save a file, a link or a Drive copy.

Do I need a wallet or an API key?

No. Chainscope never asks for a wallet connection, a signature or a key. It only reads public data, so it cannot move funds or revoke approvals; it tells you what to revoke and where.

How reliable are the findings?

They are derived from the tool results with documented rules (for example: an upgrade admin that is a single wallet is rated high; a borrower with a health factor below 1 is critical). Attribution in incident replays and MEV detection is heuristic, and Chainscope says so in the finding. Confirm important conclusions with a block explorer.

Why does a run wait or fail sometimes?

Every run is a request to the tool API, which shares public RPC nodes and has a rate limit (about 15 web3 requests per minute). Chainscope queues runs, waits for the limit and offers a retry; public nodes also refuse very large log ranges, which the error message names.

Can I investigate an old incident or work offline?

Yes, partly. Most checks accept pasted receipts, logs, bytecode or block JSON instead of a live lookup; the tool API still does the decoding, but no chain access is needed. Earlier results, the graph, timeline and report stay readable offline.

Can an AI agent build a Chainscope case?

Yes. The case format is documented as a JSON schema (/project.schema.json) — each check’s inputs are exactly the tool’s API input. The fifteen tools are available through the JSON API and MCP on chainscope.usefulweb.site, and a case opens with a #project= link.

Limitations

What Chainscope does not do (yet):

  • 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.

Tutorials

Learn Chainscope step by step.

  1. Your first case in five minutesOpen the exploit post-mortem template, let Chainscope run four web3 tools on sample data, then read the dashboard, the case graph, the timeline and the report.Beginner 5 min
  2. Investigate a transaction with a playbookPaste a transaction hash and addresses, let a playbook add the decoder, bridge, cross-chain and smart-account checks, and follow the suggested next steps.Beginner 7 min
  3. Contract due diligence on USDCFind out who can upgrade a token contract, how its contracts relate and what kind of account holds the admin key — with live chain data and a run history.Intermediate 8 min
  4. Bridges, cross-chain paths and pasted dataTrack a CCTP transfer from Ethereum to Base, understand the bridge statuses, and switch checks between live look-ups and pasted receipts, logs or bytecode.Intermediate 6 min
  5. Batch runs, history and A/B comparisonsRun one check over up to 50 hashes or addresses, download the CSV, and compare runs over time or two scenarios side by side.Intermediate 7 min
  6. DAO votes, token unlocks and calendar remindersCheck open proposals and vote concentration, model vesting schedules, and export proposal deadlines and unlock dates as an .ics calendar.Beginner 6 min
  7. Automate with the API, MCP and the App BridgeBuild a Chainscope case from a script or an AI agent, open it with a #project= link, call the fifteen tools directly and hand findings to other premium apps.Advanced 8 min

Ready to try it?

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