# Top Apps, Credit-Efficient Testing & Validation Errors

> Loaded on demand from the Agentled skill. `list_apps` / `get_app_actions`
> (MCP) and `agentled apps` (CLI) are the **authoritative** sources for app
> schemas — this file is a fast reference plus the testing/error playbook.

## Top Apps Quick Reference

| App | Action | Credits | Key Inputs |
|-----|--------|---------|------------|
| `agentled` | `get-linkedin-company-from-url` | 5 | `profileUrls` |
| `agentled` | `get-linkedin-profile-from-url` | 2 | `profileUrls` |
| `agentled` | `find-email-person-domain` | 3 | `firstName`, `lastName`, `domain` |
| `hunter` | `find-email-person-domain` | 3 | `firstName`, `lastName`, `domain` |
| `web-scraping` | `scrape` | 0 | `url` |
| `http-request` | `request` | 0 | `url`, `method`, `headers`, `body` |
| `notion` | `get-page-markdown` | 1 | `pageUrl` |
| `browser-use` | `run-task` | 15 | `task`, `startUrl` |
| `agentled` | `call-workflow` | varies | `workflowId`, `input` |

Use `list_apps` and `get_app_actions` for full schemas of all available apps. Use `list_models` for supported AI model IDs.

## Credit-Efficient Testing

Each execution costs real credits. Follow these rules:

1. **One execution at a time** — don't start new ones unnecessarily
2. **Retry, don't restart** — use `retry_execution` to continue from a failed step instead of starting over
3. **Test in isolation** — use `test_ai_action`, `test_app_action`, or `test_code_action` to verify steps before wiring them into a workflow
4. **Reuse prior output** — when testing downstream steps, use output data from a prior successful execution as mock input

## Common Validation Errors

| Error | Fix |
|-------|-----|
| `"references non-existent next step"` | Ensure some step has `next: { stepId: "X" }` pointing to the missing step |
| `"missing prompt template"` | Add `pipelineStepPrompt.template` to AI steps |
| `"Unknown action"` | Verify `actionId` format via `get_app_actions` |
| `"is unreachable"` | Connect every step via `next.stepId` from the trigger chain |
| `"unsupported model"` | Use a valid internal model ID (e.g., `claude-4-6-sonnet`, not `claude-sonnet-4-6`). Run `list_models` for all valid IDs. |