Smart Contract Integration & Migration
Engineering support for applications adopting existing smart contracts or moving safely between contract, program and protocol versions.
From $2,000 · final quote before payment
What's included
- Contract or program integration
- SDK and API migration
- State and data migration tooling
- Testnet rehearsal and verification
- Deployment, rollback and handover plan
Best fit for
- dApps upgrading dependencies
- Protocols migrating versions
- Products integrating third-party contracts
Change production systems deliberately
We inventory dependencies, data formats, authorities and user-facing compatibility before implementation. Migrations include tests, observability and a rollback or recovery path appropriate to the contract architecture.
Third-party protocols and contracts remain subject to their own terms, security assumptions and upgrade policies.
Delivery and operational boundaries
TierZero provides software engineering, testing, documentation and deployment support. The client controls its infrastructure, accounts, credentials, wallets and product decisions. We do not custody client or end-user assets, transmit funds on a client's behalf, operate customer trading accounts, recommend specific investments or guarantee financial results. Production use remains subject to the client's legal, compliance and risk review.
Technical scope
What we design and verify
A production smart contract integration & migration is more than a working demo. Each major component below is scoped around the target network or platform, expected load, failure conditions and the way your team will operate it after handover.
Contract or program integration
The component is verified against agreed scenarios and edge cases. Assumptions, privileged operations and known limitations are documented for the client team.
SDK and API migration
The integration is built around rate limits, timeouts, retries and measurable latency. Where appropriate, fallback providers and health checks are included in the architecture.
State and data migration tooling
This part of Smart Contract Integration & Migration is specified as a separate, testable component with acceptance criteria, logging and documented configuration rather than hidden hard-coded behavior.
Testnet rehearsal and verification
The component is verified against agreed scenarios and edge cases. Assumptions, privileged operations and known limitations are documented for the client team.
Deployment, rollback and handover plan
Delivery includes repeatable setup instructions and a handover path for client-owned infrastructure, so operation does not depend on permanent access by TierZero.
Definition of done
Before delivery, we validate the agreed happy path, expected failures and operational controls. You receive the applicable source code, configuration reference, deployment instructions and a walkthrough of the system. Any third-party fees, infrastructure subscriptions or external dependencies are identified during scoping.
Delivery
How the engagement works
Technical discovery
We confirm the objective, constraints, integrations and acceptance criteria.
Architecture & scope
You receive milestones, responsibilities, timeline and the final quote.
Build & verification
Implementation is tested against the agreed scenarios with visible progress.
Handover & support
We deploy or hand over the code, documentation and operating instructions.
Built for production
Scope, security and ownership
Delivery model
Application, data and infrastructure components are scoped as independently testable services with clear interfaces.
Security baseline
Secrets, authentication, observability, backups and deployment access are handled with least-privilege defaults.
What we need from you
User flows, integrations, traffic expectations, hosting constraints and existing code or infrastructure.
Questions before you start
What is included in the Smart Contract Integration & Migration starting price?+
The $2,000 figure is a starting point. We confirm the exact scope, integrations, acceptance criteria and fixed quote before work begins. The listed deliverables are included unless the agreed proposal says otherwise.
How long does delivery take?+
Timing depends on integrations, testing depth and whether existing code is involved. After a short technical discovery, we provide milestones and a delivery estimate before payment.
Who controls the source code, infrastructure and keys?+
The agreed source code and deployment are handed over to the client. Production wallets, seed phrases and private keys remain client-controlled; we design integrations around scoped credentials and least-privilege access.
How do we verify the result?+
We agree measurable acceptance criteria before implementation, then provide testing evidence, documentation and a handover walkthrough for the delivered scope.
Can you work with our existing code or infrastructure?+
Yes. We can begin with a focused review, identify reusable components and propose the smallest safe implementation path instead of forcing a full rebuild.
Technical resources
Related guides
TON Smart Contract Audit: What Auditors Check in FunC/Tact
A TON smart contract audit checklist: bounced message handling, cross-hop gas accounting, and TEP-74/62 compliance in FunC and Tact.
Read guide Smart ContractsSmart Contract Audit Cost in 2026: EVM, Solana and TON Pricing
Smart contract audit cost breakdown for 2026: real EVM, Solana and TON pricing tiers from $8k, and what drives quotes up or down.
Read guide Smart ContractsDo You Need a Smart Contract Audit Before Mainnet Launch?
Do I need a smart contract audit? Score TVL at risk, admin keys, and mechanism novelty to decide before mainnet.
Read guideRelated services
Get a practical scope, not a sales pitch
Tell us the target network or platform, required integrations, expected load and what you already have. We'll reply with the next technical questions, delivery plan and quote.