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Sayfitech
Financial technology

DeFi integrations

Protocol interactions, swaps, staking and liquidity handled programmatically and safely.

Engagement
Fixed-scope build
Typical timeline
6–9 weeks
Starts with
A list of the protocols you use and the wallets that currently touch them.
01The situation

An on-chain transaction is final. A wrong address, an unlimited approval left open since 2021, or a router quietly accepting a terrible price will not be reversed by a support ticket, however politely you ask.

Why it matters

On-chain strategy execution without manual wallet work.

Capital systems, engineered.

What we build

Concrete artefacts, handed over and documented.

01

A simulation step before every transaction, so the predicted balance change is checked against expectation before anyone signs

02

Allowance hygiene: least-privilege approvals, automatic revocation, and a register of every allowance still open

03

Price and slippage bounds on every swap, so the trade fails rather than executing at a rate you would have refused

04

Protocol adapters with pinned versions, so an upgrade elsewhere cannot silently change what your code does

05

Monitoring on position health, oracle deviation and governance proposals at the protocols you depend on

What changes

01

Transactions that would have failed or landed badly are stopped before signing

02

Open approvals stop accumulating quietly across wallets

03

A protocol upgrade becomes a scheduled decision instead of a Monday morning surprise

How it runs

  1. Weeks 1–2

    01Threat model

    We list every way money could leave incorrectly, then design each control against a specific entry on that list.

  2. Weeks 3–7

    02Adapters and simulation

    Protocol integration, the pre-sign simulation layer and the allowance register.

  3. Weeks 8–9

    03Testnet and rehearsal

    Full dry run on a fork of live state, including a deliberate bad transaction that the controls must refuse.

06Typical stack

Chosen per project. Named here so you can see the shape of it.

  • Foundry
  • Tenderly
  • viem
  • Grafana

Questions we get asked

Next step

Tell us the outcome, not the tooling.

Send us the situation you are in. We will tell you which discipline it belongs to, what we would do first and what it costs, including when the answer is to wait.

Start a projectOr email us directlyinfo@sayfi.ai