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Enterprise Integration / API Integration

Connect Your Systems to the APIs You Already Need

We connect your systems to the third-party APIs you already depend on, shipping carriers, tax calculators, payment providers, with authentication, retries and error handling built in so external calls stay reliable.

50+ ERP and software projects. Zero failed projects since 2021.

Connected Services
Stripe
Connected
Twilio
Connected
Google Maps
Connected
ShipStation
Connected
Retry-safe
Every outbound call backed by retry and backoff logic
1-3 wks
Typical time to connect a first third-party API
Logged
Every call and failure tracked for diagnosis
Secure
Credentials stored and rotated, never hardcoded
Why It Matters

Your systems don't get to control someone else's API

A shipping carrier, a tax engine or a payment processor runs its own API on its own terms: its own uptime, its own rate limits, its own error format. API Integration is the work of wiring your systems into those external APIs so a slow or failed call out there doesn't turn into an outage in here.

Reliability You Don't Control Directly

Retries and fallbacks for calls that fail outside your system

When a third-party API times out or returns an error, the call retries with backoff instead of failing the whole workflow, and a fallback path keeps your process moving while the issue is resolved.

  • Retry and backoff logic per external call.
  • Fallback paths for failed or slow responses.
  • Failures logged with enough detail to diagnose.
Connecting a system to a third-party API
Credentials Handled Properly

Authentication with every third party, stored and rotated securely

Each external API gets the authentication scheme it actually requires, whether that's API keys, OAuth2 or signed requests, with credentials stored and rotated instead of hardcoded into the integration.

  • Auth matched to what each third party requires.
  • Credentials stored and rotated securely.
  • Usage kept within each API's rate limits.
Managing credentials for a third-party API connection
What a Connection List Looks Like

Every third-party service tracked in one place

Illustrative example. Your actual connections depend on the third-party services you rely on.

QuickBooks
Connected
Avalara
Connected
FedEx
Connected
How It Works

From reviewing the third party's API to a monitored connection

1
Review the third-party API
We check documentation, rate limits and authentication requirements before work starts.
2
Design the integration
Mapping which of your workflows depend on the external call, and what happens if it fails.
3
Build the connection
Authentication, retries and error handling are built around the third party's actual behavior.
4
Test against real responses
The integration is tested against real API responses, not just the happy path.
5
Release and monitor
The connection goes live with call volume and error rates monitored after handover.
What's Included

Everything you need to connect to APIs you don't control

🔑

Third-party authentication

API keys, OAuth2 or signed requests, implemented to match what the third party requires.

🔄

Retry and backoff logic

Failed calls retry automatically instead of failing the whole workflow.

⚠

Error handling

Failures are caught, logged and routed to a fallback instead of crashing silently.

⏱

Rate limit handling

Calls stay within the third party's limits instead of getting throttled or blocked.

🔒

Credential management

Keys and tokens stored securely and rotated, not hardcoded into the integration.

📈

Monitoring and handover

Call volume and error rates monitored after launch, with documentation handed to your team.

What Changes

What API Integration changes for calls going out to third parties

Connected
Your systems reach the third-party APIs they depend on
Resilient
A failed external call doesn't stall your workflow
Secure
Credentials stored and rotated, not hardcoded
Within limits
Calls stay inside the third party's rate limits
Visible
Call volume and errors tracked after go-live
Documented
Every connected service explained for your team
Why Us

Why teams choose TCB Infotech to connect their APIs

1
We read the third party's documentation closely
Rate limits, auth quirks and failure modes are checked before we write a line of integration code.
2
Retries are designed, not default
Backoff and retry behavior is matched to what actually makes sense for that specific API.
3
Credentials handled properly
Keys and tokens are stored and rotated securely, never hardcoded into the integration.
4
We flag unreliable APIs early
If a third party's API can't support your reliability needs, we say so before work starts, not after.
5
Direct access to the team that built it
You reach the people who built the integration, not a support queue.
6
Proven delivery
50+ ERP and software projects, with zero failed projects since 2021.
FAQ

API Integration, answered

What does API Integration actually involve?
We connect your existing systems to third-party APIs that already exist, such as a shipping carrier, a tax calculation service or a payment provider, handling authentication, retries and error handling for every call going out.
How is this different from API Development?
API Integration connects your systems out to APIs that already exist elsewhere. API Development goes the other way: it builds new endpoints on top of your own systems so other applications can call in. Integration wires up what already exists, development builds what doesn't.
What happens if the third-party API is down or slow?
Calls are retried with backoff, failures are logged with enough detail to diagnose, and your system keeps working on a fallback path instead of stalling on a single failed call.
How is authentication with the third party handled?
We implement whatever the third-party API requires, whether that is API keys, OAuth2 or signed requests, and keep credentials stored and rotated securely rather than hardcoded.
Can you integrate with any third-party API?
Most well-documented REST or SOAP APIs, yes. We review the third party's documentation and rate limits upfront and flag anything that would limit reliability before work starts.
What happens after the integration goes live?
We monitor call volume and error rates, fix issues that surface under real traffic, and hand over documentation covering every external service now connected.

Start Connecting Your APIs

A workflow that depends on a third-party API is only as reliable as the integration handling its failures. Book a free consultation and tell us which external services you need connected.

Book a Free Consultation →

No commitment. See an integration plan before you decide.

API Integration Features

How We Connect Your APIs

From reviewing the third party's documentation to a monitored, resilient connection. Here is the process behind every integration we build.

Core Process

Review, build and monitor, in that order

Review

The third party's real behavior, understood before we build

We read the third party's documentation, check its rate limits and test its actual responses before writing any integration code, so surprises show up early instead of after launch.

  • Documentation and rate limits reviewed upfront.
  • Authentication requirements confirmed early.
  • Failure modes flagged before work starts.
Reviewing a third-party API's documentation and limits
Build

Retries, error handling and authentication matched to that API

Retry and backoff behavior, error handling and authentication are all built to match how that specific third-party API actually behaves, not a generic template applied to every integration.

  • Retry and backoff logic per external call.
  • Errors caught and routed to a fallback.
  • Credentials stored and rotated securely.
Building retry and error handling for an external API call
Monitor

Call volume and errors tracked after the connection goes live

Once the integration is live, we track call volume and error rates, fix issues that surface under real traffic, and hand over documentation covering every connected service.

  • Call volume and error rates tracked post-launch.
  • Issues fixed as they surface under real traffic.
  • Documentation handed to your team.
Monitoring call volume for a live API integration
What You Get

Everything included in the engagement

🔑

Third-party authentication

API keys, OAuth2 or signed requests, matched to what's required.

🔄

Retry and backoff logic

Failed calls retry automatically instead of failing the workflow.

⚠

Error handling

Failures caught, logged and routed to a fallback path.

⏱

Rate limit handling

Calls stay within the third party's agreed limits.

🔒

Credential management

Keys and tokens stored securely and rotated.

📈

Monitoring and handover

Call volume and errors tracked, with docs handed over.