API Development

    APIs That Other Systems Actually Trust

    We design, build, and document REST and GraphQL APIs that your mobile app, your partners, and your future self can integrate against without guesswork.

    Most software problems eventually become API problems. Your mobile app needs to talk to your backend. Your backend needs to talk to a payment processor. Two internal services need to agree on what a "customer" looks like. Getting these contracts right — and keeping them stable as the product changes — is a large part of what separates software that's pleasant to build on from software that fights you every step.

    We treat API design as a product decision, not an afterthought: naming conventions, error formats, pagination, and versioning are agreed on before the first endpoint is written. This work is often part of a larger build — see our custom software development services — but we also take on API-only engagements for teams that already have a product and just need the integration layer done right.

    What We Deliver

    End-to-End API Engineering

    REST API Design

    Predictable, resource-oriented endpoints with sane status codes and pagination that other developers actually enjoy consuming.

    GraphQL APIs

    A single flexible endpoint when your clients need to query varied, nested data shapes efficiently.

    Third-Party Integrations

    Payment gateways, CRMs, shipping providers, calendars — wired in and handled gracefully when they fail.

    Documentation

    OpenAPI/Swagger specs and readable docs so your team or partners can integrate without asking you questions.

    Versioning Strategy

    A plan for evolving the API without breaking every client that already depends on it.

    Auth & Rate Limiting

    Token-based authentication, scoped permissions, and rate limits that protect the system under real load.

    Choosing an Approach

    REST or GraphQL?

    We don't default to one. The right choice depends on your data shape and who's consuming the API.

    AspectRESTGraphQL
    Best forSimple, resource-based data with predictable shapesComplex, nested data where clients need different fields per screen
    Over/under-fetchingCommon — clients often get more or less than they needClients ask for exactly the fields they want
    CachingStraightforward with HTTP cachingNeeds more deliberate caching strategy
    Learning curve for consumersLow — most developers already know REST conventionsSlightly higher, but self-documenting via schema
    Technology

    Backend Tools We Use

    Node.jsNode.js
    PythonPython
    LaravelLaravel
    TypeScriptTypeScript
    PostgreSQLPostgreSQL
    MySQLMySQL
    AWSAWS
    DockerDocker
    Our Process

    From Contract to Shipped API

    01

    Define Resources

    Map out the entities and relationships the API needs to expose

    02

    Design Contracts

    Draft endpoints/schema and agree on request & response shapes

    03

    Build & Secure

    Implement with authentication, validation, and rate limiting

    04

    Document

    Publish OpenAPI/GraphQL schema docs and usage examples

    05

    Test & Version

    Contract tests, load tests, and a versioning plan before release

    Where This Shows Up

    Common API Projects

    Payment & Billing APIs

    Wiring Stripe, Razorpay, or a custom ledger into your product safely

    Enterprise Integrations

    Connecting internal systems to ERPs, CRMs, and partner platforms

    Internal Microservices

    Clean service-to-service contracts as your backend splits apart

    Public/Partner APIs

    Rate-limited, documented APIs for external developers to build on

    Every API we ship comes with real documentation — not just an auto-generated schema dump, but working examples and a clear versioning policy, so a new engineer on your team (or a partner integrating against you) doesn't have to read the source code to understand how it behaves. Our 10+ engineers, based in Chandigarh, India, have built this kind of integration layer for clients across the USA, UAE, and India since 2022, as part of 25+ delivered projects.

    Need an API Built the Right Way?

    Tell us who needs to consume it and what data it needs to move, and we'll take it from there.

    Ask Crafter AI

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