# Support suggested gas fee API for Japan Open Chain

**URL:** <https://community.metamask.com/t/support-suggested-gas-fee-api-for-japan-open-chain/29098>\
**Category:** Feature Requests\
**Created:** [June 12, 2024, 10:21am UTC](https://community.metamask.com/t/support-suggested-gas-fee-api-for-japan-open-chain/29098 "2024-06-12T10:21:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nguyenduyhust](https://avatars.discourse-cdn.com/v4/letter/n/9de053/32.png) [@nguyenduyhust](https://community.metamask.com/u/nguyenduyhust)\
**Post date:** [June 12, 2024, 10:21am UTC](https://community.metamask.com/t/support-suggested-gas-fee-api-for-japan-open-chain/29098/1 "2024-06-12T10:21:04Z")

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**Description:**  
Currently, we’re using MetaMask and Metaswap API to get suggested gas fee in some our projects. However, Metaswap API just supported some networks. I hope your team can support our networks Japan Open Chain and Japan Open Chain Testnet.  
Thank you.

**Purpose:**

**Extension/Mobile/Both:**

**Images/Attachments:**

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**Author:** ![nguyenduyhust](https://avatars.discourse-cdn.com/v4/letter/n/9de053/32.png) [@nguyenduyhust](https://community.metamask.com/u/nguyenduyhust)\
**Post date:** [June 12, 2024, 10:23am UTC](https://community.metamask.com/t/support-suggested-gas-fee-api-for-japan-open-chain/29098/2 "2024-06-12T10:23:28Z")

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Japan Open Chain - Chain Id: 81  
Japan Open Chain Testnet - Chain Id: 10081