Salesforce MuleSoft Developer

Catalog status checked July 19, 2026: Available.

Current credential snapshot

Item	Current listing
Credential	Salesforce MuleSoft Developer
Track	Developer
Level in source inventory	Mid
Exam code in source inventory	Mule-Dev-201
Price in source inventory	$200 USD
Availability	Available

Exam format, objectives, pricing, and prerequisites can change. Confirm those details in Salesforce’s current exam guide before purchasing or scheduling an exam.

Study overview

🏗️ Connect everything. Build anything. Ship faster.MuleSoft Certified Developer – Level 1

The definitive validation for the Mule 4 integration specialist.

At a Glance

Metric	Details
Exam Code	`MCD-Level 1`
Duration	120 minutes
Questions	60 multiple-choice
Passing Score	70%
Cost	$200 USD
Delivery	Proctored online or at a testing center
Prerequisites	None
Recommended Experience	Experience on basic Mule 4 projects with guidance and supervision

Who Should Take This

The Aspiring Integrator: You have a foundational understanding of Java or another object-oriented language and want to specialize in the Anypoint Platform ecosystem.
The Ecosystem Developer: You are a Salesforce or web developer looking to expand your toolkit with enterprise-grade API-led connectivity and integration patterns.
The Technical Architect in Training: You need to master the implementation details of Mule 4 before moving into high-level solution design.
The Professional Up-skiller: You want to validate your ability to design, build, test, and manage basic APIs and integrations under limited supervision.

What You’ll Prove

This certification proves you aren’t just a coder; you understand the “productization” of APIs. It validates that you can navigate the entire integration lifecycle—from defining a contract in RAML to deploying a secure application in CloudHub. * You can build and manage basic APIs and integrations moving from Anypoint Platform to Anypoint Studio and back.

You can design RAML-based API specifications that define resources, methods, and reusable data types.
You can transform complex data structures using the DataWeave 2.0 expression language to map fields between disparate systems.
You can implement robust error handling using global handlers, try scopes, and specific propagation/continuation logic.
You can navigate the Mule Event data structure, specifically managing payloads, attributes, and variables.
You can deploy applications to production-ready environments and configure basic API governance through API Manager.

Exam Outline

Domain	Weight	What’s Covered
Creating Application Networks	7%	API-led connectivity, `C4E` model, and modern API characteristics.
Designing APIs	8%	RAML syntax, methods, parameters, and API specifications.
Accessing & Modifying Events	10%	Mule event structure, DataWeave basics, and target parameters.
Structuring Mule Applications	10%	Flow references, subflows, properties files, and project modularity.
Building API Implementation	7%	`APIkit` router, manual implementations, and response mapping.
Using Connectors	10%	Database, File, FTP, and retrieval/combination of data.
Processing Records	10%	`For Each` scopes, Batch jobs, and data persistence.
Transforming Data	10%	`DataWeave` functions, modules, type coercion, and filtering.
Routing Events	8%	Choice routers, Scatter-Gather, and event validation.
Handling Errors	8%	On-Error Propagate vs. Continue, Try scopes, and custom mapping.
Debugging & Troubleshooting	5%	`MUnit` basics, root cause analysis, and debugger usage.
Deploying & Managing	7%	`CloudHub` deployment, API Manager, and Auto-discovery.

💡 In Notion, convert each domain row into a toggle to nest your study notes underneath.

Suggested Study Path

Master the Fundamentals. Enroll in the Anypoint Platform Development: Fundamentals (DEX401) course. It is the gold standard for this exam and covers the vast majority of the technical objectives.
Build Your Own POC. Don’t just watch videos. Download Anypoint Studio and complete the DIY exercises. You need muscle memory for configuring connectors and writing DataWeave scripts.
Learn the Mule Event Lifecycle. Spend extra time understanding how the message moves through a flow. If you don’t understand the difference between payload and attributes at any given step, the exam will trip you up.
Deep Dive into Error Handling. This is a frequent “make-or-break” section. Build a flow that intentionally fails and observe how On-Error Propagate and On-Error Continue affect the parent flow and the HTTP response code.
Take Practice Exams. Use the official self-assessment quiz. If you are consistently hitting 80% or higher, you are ready for the proctored attempt.

Watch Out For

The “Continue” Trap: Many candidates confuse On-Error Continue with “retrying.” It actually stops the execution and returns a success (200 OK) response to the caller. Know exactly when the state returns to the parent flow.
Variable Scope in Scatter-Gather: Remember that variables created inside a Scatter-Gather route are not automatically merged back into the main event in the same way payloads are.
RAML URI vs. Query Parameters: Pay attention to when to use a URI parameter (resource identification) versus a query parameter (filtering/sorting). The exam loves to test this distinction.
Target Variables: Using a Target Variable in a connector prevents the current payload from being overwritten. Forgetting this leads to logic errors in your transformations.

Resources

Stop worrying about the 2-hour timer and start worrying about your error handlers. If you can build a stable flow in your sleep, the cert is just a formality.

Official status sources

Salesforce Certification Overview

Catalog status last verified: 2026-07-19.

Back to resources

Salesforce MuleSoft Developer Certification Guide