Blockchain Development Tools

We build developer tooling that makes blockchain networks easier to integrate, test and build on. Our work covers SDKs, client libraries, CLI tools, indexing services, local test environments, contract testing and technical documentation. Our published open-source work includes Matchstick for The Graph, Fruzhin for Polkadot and Rollup.codes.

How it works

1
Interview developers
We speak with maintainers, ecosystem teams and developers building on the protocol to identify the biggest friction points.
2
Rank the blockers
We rank issues by developer impact and implementation effort, then agree on the priorities with your team.
3
Choose the engagement model
We propose either one tool with a fixed scope, or an embedded team maintaining a suite.
4
Prove the interface early
We test a thin slice against the live protocol to identify API and integration issues before development scales.
5
Build in weekly loops
You get working commands and examples every week. Senior engineers own API design and protocol correctness.
6
Test with real tasks
We give the tool to a developer who has never seen it and record where they stall.
7
Hand over ownership
We deliver release automation, contribution guides and migration notes. You or your community take it from there.

Frequently asked questions

What developer tools has LimeChain actually shipped?

LimeChain has published open-source tooling across several ecosystems, including Matchstick, a unit testing framework for The Graph subgraphs built under an ecosystem grant; Rollup.codes, a reference tool for comparing rollup implementations; Fruzhin, a Polkadot host implementation in Java; devGround, a Polkadot ecosystem onchain data explorer; and Hedera MultiSig. LimeChain also led development of the Hedera Token Service as an open-source contributor.

Does LimeChain have experience working with protocol foundations?

Yes. LimeChain has a seven-year ecosystem partnership with Hedera covering open-source contribution and tooling rather than a single project, and has delivered grant-funded tooling for The Graph. Long ecosystem relationships change the nature of tooling work, because tools have to survive protocol upgrades, support multiple versions concurrently and be maintained rather than shipped and abandoned.

What kinds of developer tools does LimeChain build?

SDKs and client libraries, command line tools, APIs and indexing services, local development environments and test networks, contract development and testing frameworks, explorers and monitoring tooling, reference implementations and example applications, plus the documentation and quickstarts that make all of it usable. The work is usually commissioned by a protocol foundation or ecosystem team.

How do you measure whether tooling is working?

Against developer outcomes agreed at the start: time to a first working integration, the number of steps to complete a priority task, integration error rates, documentation coverage of common tasks, and adoption of a specific capability. LimeChain tests these with real developer tasks before release and tracks adoption signals afterwards, rather than treating shipped features as the success measure.

Can you maintain tooling we already have?

Yes. Taking over existing tooling starts with an assessment of the codebase, its dependency and version support, test coverage, documentation state and open issues, followed by a stabilization plan before new features. LimeChain will state plainly where a rewrite is cheaper than maintenance, and where it is not.

Who owns the tooling we commission?

You do. Tooling is delivered into your repositories under your chosen license, with release automation, contribution guidelines and maintainership documentation so your team or your community can carry it forward. LimeChain can continue as maintainer under an ongoing arrangement, but the design assumption is that the ecosystem owns its own tools.

How do you keep tools working through protocol upgrades?

Supported-version matrices and compatibility testing are built into the test suite from the start, so an upcoming protocol change surfaces as a failing test rather than as a broken developer experience after the fork. LimeChain also documents the deprecation and migration path for each breaking change, because ecosystems lose developers at upgrades more often than at launch.

Rollup.codes

Matchstick

Gomu Gomu no Gatling

Gosemble

GiantSquid

Fruzhin

Polkadot Conformance Testing Suite

Hedera SDK

Hedera JSON RPC Relay

Hedera Local Node

Hedera Multisig

SOLmany Validators

Solana Transaction Tool

Gimlet

Zest

NEAR Javascript API

Blockchain Development Tools

How it works

Interview developers

Rank the blockers

Choose the engagement model

Prove the interface early

Build in weekly loops

Test with real tasks

Hand over ownership