What permissions does the connection allow?

According to the confirmation returned in chat, the allowed operations are viewing balance and transaction history, plus transaction signing. The writer did not execute any transfers or swaps.

What screen tells me authentication is done?

The browser displays the English text "Authentication complete. You may close this window." You can then close that tab and return to the ChatGPT / Codex screen.

Large Language ModelsAI Coding AssistantsZenn AI/ML16h agoOct 7, 2026, 10:01 JST

"HashPort Wallet MCP" plugin bypasses missing official setup step

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3 Key Points

What happened
Using ChatGPT's Plugin Creator, the writer built a private plugin named "HashPort Wallet MCP" pointing at HashPort's official MCP server, then authenticated the wallet and confirmed it was linked on October 6, 2026.
Why it matters
The authentication screen showed "Codex" as the connection source, and the resulting permissions cover balance and transaction history viewing plus transaction signing, so anyone following this walkthrough should know the connection entry point sits under the MCP server gear icon, not on the plugin detail screen.
What to watch
This record covers only the authentication path shown as "Codex", and the writer notes it may not match Web-version custom MCP apps. No transfers or swaps were executed, and the allowed operations include transaction signing, so signing is the capability to watch.

WHO IT HITSThis lands on retail crypto users and plugin-curious ChatGPT users who want to connect a wallet through an MCP server but hit the same missing official step. It also matters to developers documenting similar connections, since the authentication entry point sat under the MCP server gear icon rather than the plugin detail page.

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FAQ

What permissions does the connection allow?: According to the confirmation returned in chat, the allowed operations are viewing balance and transaction history, plus transaction signing. The writer did not execute any transfers or swaps.
What screen tells me authentication is done?: The browser displays the English text "Authentication complete. You may close this window." You can then close that tab and return to the ChatGPT / Codex screen.

Zenn AI/MLRead Original Article

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