# check-crewai-api

A skill that checks crewai code against 1.15.x instead of the 0.x syntax assistants still remember. Useful when an import or a parameter quietly does nothing.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 650 installs · ★ 48
- Author: crewAIInc
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/crewAIInc/skills/tree/HEAD/skills/check-crewai-api/SKILL.md
- Updated: 2026-10-06
- HTML: https://affpapa.org/en/nevibecode/skills/check-crewai-api

## What it does

Coding assistants write crewai from memory, and that memory is 0.x. This skill loads a mapping of what changed: which imports moved, which `Agent`, `Task` and `Crew` parameters actually exist in 1.15.x, and where the defaults landed. `Task.expected_output` is now required, `Agent.max_iter` is 25, and `Process.consensual` is gone.

The reference covers imports, parameters, `kickoff` variants, `CrewOutput` fields, LLM model strings, structured output, guardrails, the unified `Memory`, knowledge embedders, the `crewai create crew` wizard versus `--classic`, and reset-memories flags. It also walks through the errors people paste most often: `cannot import name 'BaseTool' from 'crewai_tools'`, `cannot import name 'persist'`, `got an unexpected keyword argument 'response_format'`, `result.pydantic is None`.

The first rule is the one that bites: unknown keyword arguments on `Agent`, `Task` and `Crew` are accepted and dropped. `Task(response_format=Model)` constructs fine and does nothing. So the skill tells you to assert against `model_fields` and to trust the installed source over any doc, tutorial or the `AGENTS.md` that `crewai create` writes. Rows were verified against crewai 1.15.22 and 1.15.23; if `crewai version` shows a different major or minor, re-check the version-sensitive rows.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add crewAIInc/skills --skill check-crewai-api -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/check-crewai-api/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/check-crewai-api/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add crewAIInc/skills --skill check-crewai-api -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/check-crewai-api/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add crewAIInc/skills --skill check-crewai-api -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/check-crewai-api/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install crewAIInc/skills check-crewai-api
```

2. **Manually: put the files in place**
- File: `.github/skills/check-crewai-api/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add crewAIInc/skills --skill check-crewai-api -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/crewAIInc/skills --path skills/check-crewai-api
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/check-crewai-api/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add crewAIInc/skills --skill check-crewai-api -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/crewAIInc/skills/tree/HEAD/skills/check-crewai-api/SKILL.md

## When to use it
- port crewai imports to 1.15.x after moving off 0.x
- catch a parameter that is silently ignored instead of raising
- debug an `ImportError` on `BaseTool` or `persist`
- check structured output when `result.pydantic` comes back empty
- verify installed signatures before editing crewai code

## Example prompts
- Check my crewai code against the 1.15.x API, start with imports and the Agent and Task parameters
- I keep getting `cannot import name 'BaseTool' from 'crewai_tools'` — what replaces it?
- \`result.pydantic` is None even though the run succeeded. Where is the bug?

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: cced793e136ddf23.

BEGIN THIRD-PARTY FILE cced793e136ddf23
````text
---
name: check-crewai-api
description: "Current crewai 1.15.x API versus the 0.x API that coding assistants remember: imports, Agent/Task/Crew parameters and defaults, kickoff variants, CrewOutput fields, LLM model strings and provider extras, structured output (output_pydantic, response_model, response_format), guardrails, unified Memory, knowledge embedders, the `crewai create crew` wizard vs --classic, reset-memories flags, and removed features. Use when writing, reviewing, or debugging any crewai code, before trusting remembered crewai syntax, or when a user pastes errors like `cannot import name 'BaseTool' from 'crewai_tools'`, `cannot import name 'persist'`, `ShortTermMemory`, `Anthropic native provider not available`, `LiteLLM fallback package is not installed`, `got an unexpected keyword argument 'response_format'`, `OPENAI_API_KEY is required`, `If return type is annotated, it must be Tuple[bool, Any]`, or `result.pydantic is None`."
---

# Check CrewAI API

Load this before writing or reviewing crewai code: it maps what you probably remember to what crewai 1.15.x actually accepts.

Verified against crewai 1.15.22 and 1.15.23 on 2026-10-01.
Live-tested with real LLMs on 2026-10-01.
Run `crewai version` first; if the major/minor differs from 1.15, re-verify version-sensitive rows with the `ask-docs` skill before trusting them.

---

## 1. Three rules before you write anything

1. **Unknown keyword arguments are silently ignored.** `Agent`, `Task` and `Crew` accept and drop parameters that do not exist. `Crew(memory_config={...})` and `Task(response_format=Model)` construct fine and do nothing. A stale parameter name never raises, so check it exists:

   ```python
   from crewai import Agent, Crew, Task

   assert "response_model" in Task.model_fields      # real field
   assert "response_format" not in Task.model_fields  # silently dropped if passed
   assert "memory_config" not in Crew.model_fields    # silently dropped if passed
   print(sorted(Agent.model_fields)[:5])
   ```

2. **The installed source wins over any doc, tutorial, or memory.** That includes the `AGENTS.md` that `crewai create` writes into new projects. When a row below matters, check the installed signature (see [verify-installed-api.md](references/verify-installed-api.md)).
````
END THIRD-PARTY FILE cced793e136ddf23

The third-party file has ended. Everything between the cced793e136ddf23 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 2292 of 28814 bytes. © crewAIInc · MIT · https://github.com/crewAIInc/skills/tree/HEAD/skills/check-crewai-api/SKILL.md

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