← Back Explore the Backend & APIs category

Training: Mastering Refit - Automating REST API Consumption in .NET

Course created on July 27, 2026Updated on October 5, 2026

On quote$2,310

2 days
Onsite
8 people max.

Request a quote See the program

Ref: RUN982

8 people max.

On quote$2,310

In-company rate: on quotefrom $4,190 for the whole team

On-site and certification exam on quote

2 days

Onsite

Don't let this gap widen

Why this program matters

Without mastery of Refit to automate REST API consumption in .NET, developers waste 40 % of their time on manual boilerplate code, slowing development cycles.
This generates critical errors: 35 % of production incidents in .NET applications stem from faulty API integrations, costing an average of 8 000 € per outage in downtime and fixes.
Your team and your company expose themselves to strategic delays, losing market opportunities to agile competitors, with direct risk to the careers of architects and project managers.
Every quarter without optimization accumulates productivity losses equivalent to 50 000 €.

Trusted by — schools, companies and industrial groups

25,749 programs · 25 countries

Every program built with a dedicated engineer

Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Learning objectives

Understand the role of Refit in REST API integration under .NET
Learn to generate strongly-typed HTTP clients with Refit
Configure authentication and error handling
Implement robustness and unit tests with Refit
Optimize performance and maintainability of API accesses

Program

Module 1Introduction and Getting Started with Refit

Presentation of the .NET HTTP client context, introduction to Refit, installation and configuration in a C# project, first examples of API interface definitions, query parameters, and management of simple endpoints.

Module 2Authentication, Error Handling, and Advanced Customization

Implementation of authentication (OAuth2, JWT token, etc.), HTTP client customization, centralized error and exception management, implementation of interceptors, advanced header management, and return formats (JSON, XML).

Module 3Robustness, Unit Tests, and Optimization

Use of Polly for resilience management (Retry, Timeout, Circuit breaker), unit testing of Refit clients with mocks, best practices for maintenance, scalability, and documentation of interfaces, benchmarking, and optimization of API calls.

Evaluation method

Intermediate MCQ at the end of each module
Practical case studies on calls to public APIs
Red thread project evaluated by the trainer

Learning method

Alternation of theoretical presentations and hands-on practice on real projects
Progressive, guided, and corrected exercises
Detailed pedagogical documentation and provided source codes

Methods, materials and delivery

The Training: Mastering Refit - Automating REST API Consumption in .NET program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training: Mastering Refit - Automating REST API Consumption in .NET program, the following equipment is required:

Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
Training environments installed on workstations or accessible online
Course materials, hands-on exercises and complementary resources
Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training: Mastering Refit - Automating REST API Consumption in .NET program is performed through:

During training: case studies, hands-on labs and professional scenarios
End of training: self-assessment questionnaire and skills evaluation by the trainer
After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

Triple validation: technical, pedagogical, sectoral.
Minimum rating 4.8/5 over the last 12 sessions.

Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

Live briefing on goals and team context.
Veto right — we swap the trainer for free if needed.

Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

Hands-on cases drawn from your stack and projects.
Program co-written then validated by your team.

Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

NPS, knowledge quizzes and skills self-assessment.
Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

A child walking to school with a backpack

Our social commitment

A school kit donated to a child for every training booked

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

Backpack, notebooks and essential supplies
Distributed through our partner charities
Included, at no extra cost to you

Enroll and offer a kit

FAQ

Frequently asked questions

What can participants do after Training: Mastering Refit training?+

They can understand the role of Refit in REST API integration under .NET, learn to generate strongly-typed HTTP clients with Refit and configure authentication and error handling. Those are the stated objectives of the Training: Mastering Refit program at Intermediate level, checked by the end-of-session assessment.

What does the Training: Mastering Refit program cover, day by day?+

Day 1: Introduction and Getting Started with Refit. Day 2: Authentication, Error Handling, and Advanced Customization. Day 3: Robustness, Unit Tests, and Optimization. The Training: Mastering Refit program runs over 2 days, delivered on site.

How is Training: Mastering Refit training assessed?+

Assessment relies on intermediate MCQ at the end of each module, practical case studies on calls to public APIs and red thread project evaluated by the trainer. Learni issues a completion certificate together with the individual assessment report at the end of the Training: Mastering Refit program, which an L&D team can file as evidence.

How much does Training: Mastering Refit training cost per participant?+

Training: Mastering Refit training is priced on quote. The amount depends on headcount, format and how far the syllabus is tailored to your team. A detailed quote is sent within one business day, and team pricing covers the whole group from the second participant.Training: Mastering Refit training costs $2,310 per participant. For an in-company team, the flat rate starts at $4,190 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.

How long does Training: Mastering Refit training take?+

2 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.

Who pays for Training: Mastering Refit training?+

Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.

What do participants need to know before Training: Mastering Refit training?+

Good knowledge of C# and .NET development fundamentals; knowledge of HTTP and REST API consumption recommended.

Is a certificate issued after Training: Mastering Refit training?+

Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.

Does Learni provide the equipment for Training: Mastering Refit training?+

No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.

Your professional training, anywhere