JuliusBrussee/caveman · error

githubapp: token response carried no token

Error message

githubapp: token response carried no token

What it means

Post-decode sanity check in MintInstallationToken(): GitHub returned 201 but the decoded InstallationToken has an empty Token field. Without the token string the result is unusable, so it is treated as a failed mint.

Source

Thrown at shared/platform/githubapp/githubapp.go:224

	jwt, err := a.AppJWT()
	if err != nil {
		return InstallationToken{}, err
	}
	body := map[string]any{"permissions": scopedPermissions, "repositories": []string{repository}}
	status, raw, err := a.do(ctx, "Bearer "+jwt, http.MethodPost,
		"/app/installations/"+strconv.FormatInt(installationID, 10)+"/access_tokens", body)
	if err != nil {
		return InstallationToken{}, err
	}
	if status != http.StatusCreated {
		return InstallationToken{}, fmt.Errorf("githubapp: mint token: HTTP %d: %s", status, snippet(raw))
	}
	var out InstallationToken
	if err := json.Unmarshal(raw, &out); err != nil {
		return InstallationToken{}, fmt.Errorf("githubapp: decode token response: %w", err)
	}
	if out.Token == "" {
		return InstallationToken{}, fmt.Errorf("githubapp: token response carried no token")
	}
	return out, nil
}

// RevokeToken DELETEs /installation/token authenticated with the token itself —
// the job-end "drop all agency" step. A best-effort revoke; the ~1h natural
// expiry is the backstop.
func (a *App) RevokeToken(ctx context.Context, token string) error {
	status, raw, err := a.do(ctx, "Bearer "+token, http.MethodDelete, "/installation/token", nil)
	if err != nil {
		return err
	}
	if status != http.StatusNoContent {
		return fmt.Errorf("githubapp: revoke token: HTTP %d: %s", status, snippet(raw))
	}
	return nil
}

View on GitHub (pinned to 766dce6b13)

Solutions

1. Retry the mint operation; a 201 without a token is anomalous
2. Inspect the raw response for schema changes and update the struct if GitHub changed field names

When it happens

Trigger: Thrown at shared/platform/githubapp/githubapp.go:224 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@766dce6b13 (2026-08-18). Data as JSON: /api/errors/7cfc72fe493e703a. Report an issue: GitHub.