chenhg5/cc-connect · error

cron_expr is required

Error message

cron_expr is required

What it means

HTTP 400 validation response from the cron-add API endpoint: the decoded CronAddRequest JSON has an empty cron_expr field, so the scheduler has no schedule expression to register the job with.

Source

Thrown at core/api.go:347

}

func (s *APIServer) handleCronAdd(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "POST only", http.StatusMethodNotAllowed)
		return
	}
	if s.cron == nil {
		http.Error(w, "cron scheduler not available", http.StatusServiceUnavailable)
		return
	}

	var req CronAddRequest
	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "invalid JSON: "+err.Error(), http.StatusBadRequest)
		return
	}
	if req.CronExpr == "" {
		http.Error(w, "cron_expr is required", http.StatusBadRequest)
		return
	}
	if req.Prompt == "" && req.Exec == "" {
		http.Error(w, "either prompt or exec is required", http.StatusBadRequest)
		return
	}
	if req.Prompt != "" && req.Exec != "" {
		http.Error(w, "prompt and exec are mutually exclusive", http.StatusBadRequest)
		return
	}

	// Resolve project: use provided, or pick single engine
	project := req.Project
	if project == "" {
		s.mu.RLock()
		if len(s.engines) == 1 {
			for name := range s.engines {
				project = name

View on GitHub (pinned to 4000b2338a)

Solutions

1. Include a valid cron_expr (e.g. "0 9 * * *") in the request body
2. Validate the expression syntax client-side before sending

When it happens

Trigger: Thrown at core/api.go:347 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of chenhg5/cc-connect@4000b2338a (2026-09-06). Data as JSON: /api/errors/43fe596d93bcda8d. Report an issue: GitHub.