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Confluence REST API v2 — “storage” format fails when creating pages via MCP Gateway

Lucia
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October 31, 2025

Hi everyone,

I’m currently experimenting with the Confluence REST API v2 (through an MCP Gateway integration) to programmatically create pages.

When I use the ADF format, everything works fine — the page is created as expected. However, when I switch to “storage” format (HTML/XHTML content), the request consistently fails with this error:

OpenAPIClientException - Error executing HTTP request for unknown: no-default: Name or service not known

My API token, gateway URL, and environment variables are all configured correctly (ADF requests succeed).

Is storage format supported for content creation by Confluence MCP server?

If not, is there an alternative or planned support for creating pages using HTML/XHTML content (storage format ) instead of ADF?

Thank you in advance!

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