ZuploZuplo
LoginStart for Free
  • Documentation
  • API Reference
Introduction
Getting Started
    Develop using the Portal
      1 - Setup Your Gateway2 - Rate Limiting3 - API Key Auth4 - Deploy5 - Dynamic Rate LimitingMCP - Quick start
    Develop Locally
      1 - Setup Your Gateway2 - Rate Limiting3 - API Key Auth
Concepts
Development
Policies
    Policy Catalog
    Authentication
    Authorization
    Security & Validation
    Metrics, Billing & Quotas
    Testing
    Request Modification
      Transform Request Body PolicyRemove Request Headers PolicyClear Request Headers PolicyChange Method PolicyForm Data to JSON PolicyRemove Query Parameters PolicyAdd or Set Request Headers PolicySet Body PolicyAdd or Set Query Parameters PolicyQuery Parameter to Header Policy
    Response Modification
    Upstream Authentication
    Archival
    GraphQL
    Other
    Guides
Handlers
API Keys
MCP Server
MCP Gateway
AI Gateway
Developer Portal
Monetization
Deploying & Source Control
Observability
Networking & Infrastructure
Account Management
Programming API
Build with AI
Zuplo CLI
Migration Guides
Platform LimitsSecuritySupportTrust & ComplianceChangelog
powered by Zudoku
Request Modification

Set Body Policy

The Set Body policy allows you to set or override the incoming request body. GET or HEAD requests do not support bodies on Zuplo, so be sure to use the Change Method policy to update the method to a POST or whatever is appropriate. You might also need to use the Set Header policy to set a content-type.

Configuration

The configuration shows how to configure the policy in the 'policies.json' document.

config/policies.json
{ "name": "my-set-body-inbound-policy", "policyType": "set-body-inbound", "handler": { "export": "SetBodyInboundPolicy", "module": "$import(@zuplo/runtime)", "options": { "body": "Hello World!" } } }

Policy Configuration

  • name <string> - The name of your policy instance. This is used as a reference in your routes.
  • policyType <string> - The identifier of the policy. This is used by the Zuplo UI. Value should be set-body-inbound.
  • handler.export <string> - The name of the exported type. Value should be SetBodyInboundPolicy.
  • handler.module <string> - The module containing the policy. Value should be $import(@zuplo/runtime).
  • handler.options <object> - The options for this policy. See Policy Options below.

Policy Options

The options for this policy are specified below. All properties are optional unless specifically marked as required.

  • body (required) <string> - The value to set for the body.

Using the Policy

Read more about how policies work

Edit this page
Last modified on May 29, 2026
Add or Set Request Headers PolicyAdd or Set Query Parameters Policy
On this page
  • Configuration
    • Policy Configuration
    • Policy Options
  • Using the Policy
JSON