What is Zod validation in OpenClaw?

Zod is a schema declaration and validation library. OpenClaw uses it to ensure your configuration files are structured correctly before saving them. If a key or value doesn't match the expected schema, Zod throws a validation error.

What does 'unrecognized key' mean?

It means the configuration file contains a setting (a 'key') that the current version of OpenClaw doesn't know how to handle. This usually happens when a new feature or model is added, and you're using an older version of the software that hasn't been updated to recognize it yet.

How do I check my current OpenClaw version?

You can check your installed OpenClaw version by running `openclaw --version` in your terminal.

Fix OpenClaw Kimi K2.5 Config Validation Error: Unrecognized Key

TL;DR — Quick Fix

Upgrade OpenClaw to the latest version to fix the 'requiresOpenAiAnthropicToolPayload' unrecognized key error when configuring Kimi K2.5.

Run Diagnostics

Next Step

Fix now, then reduce repeat incidents

If this issue keeps coming back, validate your setup in Doctor first, then harden your config.

Open Doctor Harden Config

Error Signal

Config validation failed: models.providers.kimi-coding.models.0.compat: Unrecognized key(s) in object: "requiresOpenAiAnthropicToolPayload"

What's Happening

You're trying to add the Kimi K2.5 model (kimi-coding/k2p5) using the openclaw configure wizard. When you get to saving the configuration, it's failing. You see a Zod validation error saying there's an unrecognized key: requiresOpenAiAnthropicToolPayload.

The Fix

This is a known issue that's already resolved. The fastest way to fix this is to upgrade your OpenClaw installation to the latest version.

Run this command in your terminal:

npm install -g openclaw@latest

Or if you're using yarn:

yarn global add openclaw@latest

After upgrading, try running openclaw configure again. The Kimi K2.5 model should now save without errors.

Why This Occurs

The configuration schema used by OpenClaw was updated, but your current version had an older schema that didn't recognize the new requiresOpenAiAnthropicToolPayload key. This key was likely added to support specific features or compatibility requirements for the Kimi K2.5 model. When the validation process encountered this unknown key, it threw the Zod error and prevented the configuration from saving.

Essentially, your installed version of OpenClaw was expecting a different configuration format than what the Kimi K2.5 setup was trying to apply.

Prevention

Keep your OpenClaw installation up-to-date. Regularly running npm install -g openclaw@latest (or your package manager's equivalent) will ensure you have the latest configuration schemas and bug fixes. This minimizes the chances of encountering issues due to outdated configuration definitions.

Always check the release notes for significant changes when upgrading if you rely heavily on specific model integrations.

Last Updated: March 2026

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