For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Postman
PricingEnterprise
Contact SalesSign InSign Up for Free
HomeDocs
HomeDocs
      • Overview
        • Overview
          • Blocks reference
            • Data blocks overview
            • String
            • Bool
            • Number
            • Null
            • Select
            • Now
            • Date
            • Date and time
            • List
            • Record
            • Create variable
            • Get variable
            • Template
            • Get configuration
        • Deployed flows overview
        • Connector blocks overview
Postman API Platform

Product

  • Postman Overview
  • Enterprise
  • Spec Hub
  • Flows
  • Agent Mode
  • API Catalog
  • Fern
  • Postman CLI
  • Integrations
  • Workspaces
  • Plans and pricing

API Network

  • App Security
  • Artificial Intelligence
  • Communication
  • Data Analytics
  • Database
  • Developer Productivity
  • DevOps
  • Ecommerce
  • eSignature
  • Financial Services
  • Payments
  • Travel

Resources

  • Postman Docs
  • Academy
  • Community
  • Templates
  • Intergalactic
  • Videos
  • MCP Servers

Legal and Security

  • Legal Terms Hub
  • Terms of Service
  • Postman Product Terms
  • Security
  • Website Terms of Use

Company

  • About
  • Careers and culture
  • Contact us
  • Partner program
  • Customer stories
  • Student programs
  • Press and media
Twitter iconLinkedIn iconGithub iconYouTube iconInstagram iconDiscord icon
Download Postman
Privacy Policy

© 2026 Postman, Inc.

On this page
  • Output
  • Setup
  • Example
Postman FlowsFlows referenceBlocksData

The Null block

||View as Markdown|
Was this page helpful?
Previous

The Number block

Next

The Select block

Built with

When a flow runs, the Null block sends a null value from its output port. Null values can be useful in many cases, including handling API responses with null value fields and clearing inserted data block values.

Output

The Null block has a single output port that sends a null value.

Setup

Connect the Null block’s output port to another block’s input port. It will send a null value to that block.

Example

To see the Null block in an example flow, check out Flow Snippets: Null.