Hook Review
Map sender and receiver callbacks across integrations.
ERC777 Integration Engineering
ERC777 Integration Engineering. Understand Hooks Before Adding Token Interactions.
ERC-777 integration review, callback testing and migration planning for products with a documented requirement for token hooks.
- Hook Review
- Operator Controls
- Interaction Testing
- Migration Planning
What we build
Discuss Your ProjectERC777 Integration Engineering Services
Operator Controls
Explain permissions and revocation behaviour.
Interaction Testing
Exercise reentrancy-sensitive application paths.
Migration Planning
Evaluate maintained alternatives for existing deployments.
From scope to launch
Start Your ProjectOur Development Process
- 01
Discovery
Confirm the integration requirement.
- 02
Architecture
Review library and operator choices.
- 03
Implementation
Model callback interactions.
- 04
Verification
Test adversarial receiver behaviour.
- 05
Launch & Support
Document maintenance or migration steps.
Library support and callback safety are design decisions
ERC-777 introduces operator and hook behaviour that consuming applications must handle deliberately. We assess whether it is necessary, pin dependencies and test callback interactions. OpenZeppelin no longer supports ERC-777 in its version 5 contract library, so new work needs an explicit maintenance strategy.
Dependency ownership
Identify who maintains the chosen implementation.
Caller assumptions
Review applications that assume a simple transfer.
Practical Use Cases
01
Legacy integrations
Document an existing hook-based token system.
02
Compatibility labs
Test selected applications against callback behaviour.
03
Transition projects
Move to a reviewed alternative where appropriate.
Selected for your scope
Technology & Delivery Toolkit
We choose the implementation tools after confirming the architecture and integrations.
- ERC-777 interfaces
- Hook fixtures
- Operator policies
- Migration tests
ERC777 Integration Engineering FAQs
Is ERC-777 in OpenZeppelin Contracts 5?
No. That library version no longer supports it; dependency selection must be reviewed.
Are hooks automatically safer than approvals?
No. They introduce different interactions that require careful threat modelling and testing.
Assess your hook-based token before extending it
Tell us what you want to build. We’ll help define the next practical step.