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Agent execution terminated due to error - Google Antigravity

The Antigravity agent runner stopped before completing the task. The cause can be provider reachability, model routing, MCP tool failure, or stale local auth.

Antigravity Agent execution terminated due to errorAntigravity Model API cannot be reachedAntigravity agent terminated
Paste an error to match it against the wiki. / 粘贴报错后自动匹配。

Error text / 报错原文

  • Agent execution terminated due to error
  • Agent terminated due to error
  • Model API cannot be reached

What it means

The Antigravity agent runner stopped before completing the task. The cause can be provider reachability, model routing, MCP tool failure, or stale local auth.

Most common causes

  • Backend or model route temporarily unavailable
  • MCP server crashes during tool discovery
  • A long chat or large tool payload hits request limits
  • Google account token state is stale

Fastest fix

  • Start a new small task in a new chat
  • Disable MCP servers and retry
  • Sign out and back in if other network calls fail
  • Switch model if the failure is model-specific

Safe fix

  • Re-enable MCP servers one at a time
  • Keep project rules short and path-scoped
  • Avoid running production-changing commands until the agent is stable
  • Capture logs before reinstalling

What not to do

  • Do not delete project files while fixing an IDE agent crash
  • Do not hardcode Google tokens into MCP config
  • Do not assume all model failures are local bugs

How to confirm the fix

Run the smallest reproducible command first, then retry the agent task only after authentication, quota, and tool discovery are stable.

node --version
git status --short --branch
echo %APPDATA%

Related errors

Related tools

Sources