n8n-nodes-cohere

Custom n8n community node that adds Cohere Chat Models (Command R, Command R+, Command A) as a Language Model supplier for use in AI Agent workflows.

Models supported

| Model | Context | Notes | |---|---|---| | command-a-03-2025 | 256k | Flagship, most capable | | command-r-plus-08-2024 | 128k | Best for complex RAG | | command-r-08-2024 | 128k | Balanced | | command-r-plus | 128k | Previous gen flagship | | command-r | 128k | Previous gen balanced | | command-r7b-12-2024 | 128k | Fastest, lightest |

Installation

Option A — Install from local package (development)

# 1. Build the package
cd n8n-nodes-cohere
npm install
npm run build

# 2. Link globally
npm link

# 3. In your n8n custom nodes directory
cd ~/.n8n/custom   # or wherever N8N_CUSTOM_EXTENSIONS points to
npm link n8n-nodes-cohere

Option B — Install directly from folder

# Inside your n8n instance node_modules or custom extensions path:
npm install /absolute/path/to/n8n-nodes-cohere

Option C — Publish to npm and install as community node

# Publish
npm publish

# Then in n8n UI: Settings → Community Nodes → Install → n8n-nodes-cohere

Setup in n8n

1. Go to Credentials → New → search for "Cohere API"
2. Paste your API key from https://dashboard.cohere.com/api-keys
3. In any AI Agent workflow, add the "Cohere Chat Model" node
4. Connect its output to the "Model" input of an AI Agent node

Node parameters

| Parameter | Default | Description | |---|---|---| | Model | command-r-plus-08-2024 | Which Cohere model to use | | Temperature | 0.3 | 0 = deterministic, 1 = creative | | Max Tokens | 1024 | Max response length. 0 = model default |

Project structure

n8n-nodes-cohere/
├── package.json
├── tsconfig.json
├── src/
│   ├── credentials/
│   │   └── CohereApi.credentials.ts   ← API Key credential type
│   └── nodes/
│       └── LmChatCohere/
│           ├── LmChatCohere.node.ts   ← Node + BaseChatModel impl
│           └── cohere.svg             ← Icon
└── dist/                              ← Built output (after npm run build)

How it works

• Extends BaseChatModel from @langchain/core directly (no @langchain/cohere dependency)
• Calls Cohere's v2 Chat API (POST https://api.cohere.com/v2/chat)
• Maps LangChain message types (human, ai, system) → Cohere roles (user, assistant, system)
• Returns a SupplyData response so n8n's AI Agent can use it as its language model

Requirements

• n8n >= 1.0.0
• Node.js >= 18
• A Cohere API key (free tier available at https://dashboard.cohere.com)