Unexpected approvals
A routine action can quietly grant broader token permissions than the workflow needs.
Gateway Transaction Intelligence
Understand a transaction’s expected effects before your bot signs it.
Submit one unsigned Base Sepolia transaction. We examine its expected effects, approvals, fees, and policy findings, then prepare a clear report and email your private link. No wallet connection or appointment needed.
- No seed phrase
- No private key
- No custody
Pre-sign evidence Deterministic review
01
InputUnsigned transaction
Asset impactApprovalsGas & feesPolicy rules
Evidence verdictBLOCK
A sample policy has rejected an unlimited approval. Evidence supports the decision; it does not promise perfect safety.
01Unsigned intent stays separate from signing.
02Deterministic checks produce inspectable evidence.
03Your report arrives by email. Signing remains your decision.
Why review before signing
Automation makes speed easy. Intent is harder.
A bot can prepare a valid transaction that still violates its purpose or your policy. Gateway turns the proposed call into structured evidence without claiming to detect every possible blockchain vulnerability.
Reverting transactions
Raw calldata rarely explains whether a call is likely to fail—or why.
Unexpected gas costs
Fee assumptions can drift from the transaction your automation is actually preparing.
Wrong destinations
A valid address is not proof that the intended contract or function is being called.
Contract changes
Proxy targets and administrative controls can change the code behind a familiar address.
Permission changes
Token allowances and operator permissions can outlive the transaction that created them.
Bot policy violations
A technically valid call may still exceed the limits your automated workflow should follow.
Opaque calldata
Encoded transaction data is difficult to review under time pressure without structured evidence.
How it works
Share the transaction. Receive the evidence.
One online order covers the review and report preparation. You do not need to install software, connect a wallet, or schedule a call.
- 01
Provide the unsigned details.
Enter the Base Sepolia sender, destination, value, calldata, and the behavior you expect. Add your delivery email and choose an available payment method—never share wallet secrets.
- 02
We prepare your review.
After payment is confirmed, the checks examine expected effects, permissions, fees, failures, and destination evidence. Your private order page shows progress.
- 03
Open your report when it is ready.
We email your private link. Findings, limitations, and suggested checks are organized together so you can make an informed decision before signing.
What the report examines
Transaction evidence you can inspect.
Each report separates observed evidence, policy findings, and unresolved limitations so a PROCEED, REVIEW, BLOCK, or INDETERMINATE result stays understandable.
Asset impact
Expected native-asset and token balance changes.
Token transfers
Transfer direction, assets, recipients, and quantities when observable.
Approvals
Allowance changes, spenders, and unlimited-approval warnings.
Gas and fees
Gas estimate, fee assumptions, and notable cost signals.
Reverts
Failure evidence and available reasons from deterministic simulation.
Destination contract
Code presence and observable destination details.
Proxy and admin
Supportable proxy, implementation, or administrative observations.
Policy checks
Findings against agreed limits for value, destination, approvals, and behavior.
Evidence limitations
What was not established and what still needs human review.
Static demonstration
See what a paid report feels like.
This example uses fictional, pre-generated data. It does not represent a customer, live transaction, prevented loss, or safety guarantee.
DEMO DATA · BASE SEPOLIA
Pre-Sign Evidence Report
Verdict! BLOCK
- Transaction type
- ERC-20 approval
- Gas estimate
- 46,000 gas
- Primary indicator
- Unlimited token approval
- Policy result
- Approval rule blocked
01 Summary +
The proposed transaction grants the destination contract an unlimited allowance for the demo token. No native asset transfer is expected in this call.
02 Asset impact +
- Native transfer
- None observed
- Token transfer
- None in approval call
- Allowance change
- 0 → unlimited
03 Permissions +
Unlimited approval warning
The requested allowance exceeds the exact amount described for the workflow and can remain usable after this transaction.
04 Gas +
Estimated usage: 46,000 gas. Fee observations are point-in-time evidence and should be rechecked near signing.
05 Contract observations +
Bytecode is present at the destination. The demonstration evidence does not establish whether every administrative control is acceptable for this workflow.
06 Policy findings +
- Rule
- denyUnlimitedApprovals
- Result
- Blocked
- Recommended human action
- Replace the unlimited allowance with the exact required amount and independently confirm the spender.
07 Evidence limitations +
This static example does not prove future contract behavior, eliminate all blockchain risk, or replace a smart-contract audit and independent operational controls.
Introductory offers
Start with one decision.
Order the $149 report online and receive it through a private link. Tailored setup and integration are separate projects, with scope agreed before work begins. Building an integration? Explore wallet payments through our API.
Pre-Sign Transaction Review
$149
introductory price
A prepared evidence report for one unsigned Base Sepolia transaction, with a private link emailed when it is ready.
- Expected transaction impact
- Gas, transfers, and approvals
- Failure and contract observations
- Policy findings and limitations
- Clear evidence report
Bot Safety Setup
$399
scope confirmed first
Transaction review plus a reusable policy configuration for an agreed automated workflow.
- Everything in Transaction Review
- Workflow policy definition
- Approval and value limits
- Destination and behavior rules
Custom Bot Integration
Starting at$999
scope confirmed first
Connect Gateway Transaction Intelligence to your bot or automated EVM transaction workflow.
- Integration discovery
- Pre-sign review boundary
- Policy-rule implementation
- Deterministic result handling
Who this is for
Teams building transaction automation.
Designed for developers and small technical teams responsible for what automated EVM workflows prepare, approve, and sign.
- 01Trading-bot developers
- 02AI-agent developers
- 03EVM application developers
- 04Treasury automation teams
- 05Smart-account developers
- 06Small wallet teams
- 07DeFi automation developers
Security and privacy boundary
We do not need your private key, seed phrase, or custody of your assets.
Gateway Transaction Intelligence analyzes unsigned transaction information and relevant public blockchain evidence. It does not connect to your wallet, sign transactions, broadcast transactions, or take custody.
- Never send wallet secrets, recovery material, keystore passwords, or custody credentials.
- Only provide the minimum transaction scenario and public contract information needed for review.
- Human decision remains required. Evidence does not make a transaction perfectly safe.
Start a review
Share the scenario. Keep every wallet secret private.
Provide your unsigned Base Sepolia transaction details and delivery email. Once payment is confirmed, we prepare the report and send your private link—there is no separate request to arrange.
Never submit a private key, seed phrase, recovery phrase, keystore password, or other wallet secret.
Rejected secret-like content is cleared from the form and is not saved by this site.
Prefer to pay with a wallet?
Checking wallet choices…
Frequently asked questions
Know the boundary before you begin.
Do you need my private key?
No. Never send a private key, seed phrase, recovery phrase, keystore password, or any other wallet secret. The review is designed around unsigned transaction information.
Do you connect to my wallet?
No wallet connection is required. Provide the unsigned Base Sepolia transaction fields in the order form and keep all signing credentials private.
Does Gateway Transaction Intelligence execute transactions?
No. The review does not sign or broadcast transactions and does not take custody of assets.
Is this a smart-contract audit?
No. It is a focused pre-sign transaction review, not a smart-contract audit, penetration test, formal verification, or guarantee of safety.
Which networks are supported?
Initial functional-pilot support: Base Sepolia only. Base mainnet and broader EVM support are evaluated per integration and are not currently supported by the pilot.
Can you integrate with my bot?
Yes. Bot Safety Setup adds a reusable policy configuration, and Custom Bot Integration can connect the review boundary to an automated EVM transaction system after scope and network support are confirmed.
What do I receive?
A structured evidence report covering expected impact, transfers, approvals, gas, failures, destination observations, policy findings, limitations, and suggested items for human review.
What happens after checkout?
Once payment is confirmed, we prepare the transaction evidence and report. Your private order page shows progress, and we email its link when the report is ready. You can leave the page while we work; there is no appointment to arrange.
What if my report needs attention?
Your private order page shows the current status. Temporary processing or email problems are retried where possible. If a problem persists, use the support link on that page rather than placing a second order.
Is setup or integration included?
The $149 service delivers a report for one unsigned Base Sepolia transaction. Bot Safety Setup and Custom Bot Integration are separate projects with an agreed scope, not part of the online report order.
What information should I provide?
Provide the Base Sepolia sender, destination, value, calldata, expected behavior, and the concern you want reviewed. Do not include wallet secrets.
Evidence before signature