It seems that the MCP can only give an AI description of a formula to the workspace, but can not write an actual formula in Fibery. Not only that, theres a character limit in the prompt. I find this bizarre… I think it should be able to create a formula by passing the actual formula string, not jus…

Better explanation of problem, written by the AI Agent which tried to create a specific formula but couldn’t :robot: : Subject: MCP create_formula_field fails on cross-relation filters referencing [This …], and silently drops conditions The AI formula generator behind create_formula_field handles …

I ran into this issue today as well. It’s also a bit frustrating since there is no formula history and the MCP to Fibery AI creation seems to degrade the quality of output from either. I had 6 working formulas that I asked Claude (via MCP) to refactor and it ended up looping and retrying until if ev…

MCP Can't Directly Create A Formula

Bugs & Issues

nathan_jay September 29, 2026, 6:58am 4

Yup agree. If I can’t be bothered to cut and paste then I sometimes give Claude/Codex browser access to manually input the formula for me. Not ideal but it works.

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MCP Can't Directly Create A Formula

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