Bluelupin Technologies

    API integration

    API and Integration Services

    Bluelupin builds APIs and integrations that move data between your ERP, CRM, payment, HR and older systems without copying it by hand. We design REST or GraphQL APIs, connect systems through middleware or events, add retries, monitoring and alerts so failures are caught, and document APIs for partners with OpenAPI specs.

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    Integrations we build

    Our system integration services connect the software you already run, so orders, payments, people and records move between systems without anyone typing them twice. As an API integration company in India, we work with teams in India and abroad, and every data flow we build has a named owner and monitoring from the day it goes live.

    You needUse
    Systems connected through APIs or eventsAPI and Integration Services (this page)
    ERP modules, ERP data migration or ERP modernizationERP Development and Modernization
    Workflows with human approvals, or RPA for screens with no APIBusiness Process Automation
    AI that reads documents in the flowIntelligent document processing
    AI that reads or sorts messages in the flowAI workflow automation

    The integrations we build most often:

    ERP and CRM integration

    We connect the ERP you already run through its APIs, including ERPNext, and CRM tools such as Salesforce, Zoho and HubSpot. A deal closed in the CRM can create the sales order in the ERP. For ERP modules or data migration, see ERP Development and Modernization.

    Payment gateway integration

    Payments, refunds and reconciliation. A confirmed payment updates the order and the invoice, and a daily check flags any payment the two sides record differently.

    HR and identity systems

    Joiners, movers and leavers flow from the HR system to the directory and the apps people use, so access is granted and removed on time.

    Team chat and data platforms

    Alerts and approvals sent to Slack or Microsoft Teams, and data loaded into BigQuery or Redshift for reporting.

    Older databases and systems

    Where a system has no API, we read its database safely or add a small API in front of it. Where the only way in is through its screens, we hand the work to RPA on Business Process Automation.

    API design and development

    Our API development services cover REST and GraphQL APIs for your own apps, your partners and the public. We write the contract first as an OpenAPI spec, agree it with the teams that will use the API, and then build to it.

    • REST for most enterprise integrations and public APIs, GraphQL when apps need to fetch flexible sets of data
    • OpenAPI specs kept in step with the code
    • Versioning, so a new version keeps existing consumers working until they move
    • SDK generation where partners need a client library in their own language
    • Developer portals for APIs that many teams or partners use
    REST
    GraphQL
    API Gateway
    PostgreSQL

    Event-driven and middleware integration

    Point-to-point links, where each system calls every other system directly, break each time one of them changes. We put an integration layer in the middle instead, so each system connects once and the layer routes the data.

    • Webhooks that tell other systems the moment something changes, such as an order being paid
    • Message queues and event streams with Kafka, SQS and EventBridge, so one slow system does not hold up the rest
    • Middleware or an iPaaS such as MuleSoft where ready-made connectors save build time
    • Batch ETL where real time is not needed, such as nightly loads for reporting
    • Microservices split out where one part of a system needs to scale on its own, with CQRS where reads and writes need separate models
    • Services designed so a service mesh can be added as their number grows
    Kafka
    SQS
    MuleSoft

    Keeping integrations reliable

    Integrations fail in quiet ways: a partner system is down for a minute, a message arrives twice, or a field changes format. We build every integration to handle these cases, so a failure is caught and fixed on the day it happens instead of found weeks later in a report.

    • Retries with a growing wait when a system does not answer
    • Dead-letter queues that hold each failed message for review, so nothing is lost
    • Idempotency keys, so a message processed twice does no harm and a payment is recorded once
    • Monitoring and alerts on each data flow, sent to the team that owns it
    • A named owner for each data flow, who decides what happens when two systems disagree
    • Async pipelines that absorb peaks, such as a sale or month end, and work through the backlog in order

    Security

    Every API we build controls who can call it, for internal and external consumers alike, and we review that access before launch.

    • OAuth for user and partner access, and API keys for system-to-system calls
    • Rate limits, so one consumer cannot overload the API
    • Audit logs of who called what and when
    • Secrets kept in a secrets manager, out of the code and the repository

    API documentation and partner access

    An API is useful when other developers can work with it without calling you. We provide OpenAPI specs, developer portals, sandbox environments with test data and onboarding guides for internal and external developers, so a partner can build and test against your API before going live.

    How an integration project runs

    1. Map

      The systems involved, who owns each piece of data, what moves where and how often.

    2. Design

      The API contracts, how each error is handled and the security model, reviewed with your team.

    3. Build and test

      Built and tested with sample data, including failure tests such as a system going down mid-sync.

    4. Launch

      Live with monitoring and alerts on day one, and a runbook for the team on call.

    5. Support

      Changes as your systems change, made by your team or through Application Support and Maintenance.

    How long it takes: A focused module usually takes 8 to 12 weeks, and a larger program 4 to 9 months in phased releases.

    Integration work we have shipped

    Operations supervisor on a tuna harbor dock checking fleet logistics on a tablet

    Tri Marine

    We built Tri Marine's cloud operations portal for tracking and reporting its global tuna operations. It runs on Microsoft Azure, connects to the company's existing enterprise systems and gives teams real-time dashboards.

    Read the Tri Marine case study

    Illustration of healthcare icons for hospitals, medicines and care linked to a central medical cross

    GoMedii

    We built GoMedii, a healthcare marketplace that connects patients with hospitals, labs, teleconsultation and medicine delivery. It integrates with hospital, lab, insurance and payment systems through provider APIs and a payment gateway.

    Read the GoMedii case study

    See our full portfolio

    API and integration FAQs

    Common questions about API and integration.

    Can you integrate with our existing ERP or CRM?

    Yes. We connect to the ERP you already run through its APIs, including ERPNext, and to CRM tools such as Salesforce, Zoho and HubSpot, using middleware or event-driven sync.

    REST or GraphQL: which do you recommend?

    REST suits most enterprise integrations and public APIs. GraphQL works well when apps need flexible data fetching. We choose based on who uses the API and your team's skills.

    How do you prevent integration failures?

    Retries, dead-letter queues, idempotency keys, monitoring and alerts are built into every integration we deliver.

    Do you document APIs for partner ecosystems?

    Yes. We provide OpenAPI specs, developer portals, sandbox environments and onboarding guides for internal and external developers.

    Can you connect a system that has no API?

    Often, yes. We can read from its database safely or add a small API in front of it. Where the only way in is through its screens, we use RPA, which is covered on Business Process Automation.

    Book a consultation

    Tell us which systems need to talk to each other. Response within one business day.

    Book a consultation

    Or email sales@bluelupin.com or call +91 99100 24224

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