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Documentation Index

Fetch the complete documentation index at: https://docs.blnkfinance.com/llms.txt

Use this file to discover all available pages before exploring further.

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Overview

This migration guide covers the breaking change introduced in Blnk v0.13.6 for the Update Metadata endpoint. The response now returns the field meta_data (with underscore) instead of the inconsistent metadata. If your code reads the update-metadata response by key, you need to handle this change.

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Breaking changes summary

  • From: Response contains metadata (inconsistent with request body and other APIs)
  • To: Response uses meta_data (consistent with request body and other APIs)
  • Impact: Code that reads the update-metadata response using the key metadata will no longer find the object. Use meta_data or support both for compatibility.

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What changed

  1. Update Metadata response: POST /{id}/metadata responses now return the metadata object under the key meta_data only.
  2. Consistency: This aligns the response with the request body parameter name (meta_data) and with how metadata is exposed elsewhere in the API.
To support Blnk versions before and after 0.13.6, read the metadata from the response using either meta_data or metadata, with meta_data taking precedence when present. 
const response = await fetch(`${baseUrl}/${resourceId}/metadata`, {
  method: 'POST',
  headers: {
    'X-blnk-key': apiKey,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({ meta_data: { key: 'value' } }),
});

const data = await response.json();

// Support both meta_data (0.13.6+) and metadata (pre-0.13.6)
const metadata = data.meta_data ?? data.metadata ?? {};

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Need help?

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