How to Connect Brevo (Sendinblue) to an AI Agent
Auth setup
1. Go to Brevo > SMTP & API > API Keys. 2. Generate v3 API key. 3. Pass in 'api-key' header.
Key facts
| Base URL | https://api.brevo.com/v3/ |
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| API version | v3 |
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| Auth | API key in api-key header. Generate at app.brevo.com > SMTP & API. |
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| Request body | application/json |
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| Pagination | offset-based: offset and limit (max 1000). Response includes count. |
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| Rate limit | Depends on plan. Starter: 100 emails/hour. Free: 300 emails/day. |
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| Error format | JSON: {"code":"invalid_parameter","message":"..."} |
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Key endpoints
| Method | Path | Description |
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POST | /smtp/email | Send transactional email |
GET | /contacts | List contacts |
POST | /contacts | Create contact |
GET | /emailCampaigns | List email campaigns |
POST | /whatsapp/sendMessage | Send WhatsApp message |
Quickstart
POST /v3/smtp/email
api-key: {api_key}
Content-Type: application/json
{"sender":{"email":"from@example.com"},"to":[{"email":"to@example.com"}],"subject":"Hello","htmlContent":"<p>Hi</p>"}
Agent pitfalls & tips
- Auth header is 'api-key' — lowercase, NOT Authorization Bearer.
- Covers email, SMS, WhatsApp, and chat from one API.
- Transactional vs Marketing emails: different endpoints and limits.
- Contact attributes are customizable — check /contacts/attributes.
- Formerly Sendinblue — some docs may reference old name.
Source: curated by KanseiLink from official documentation (docs) and registry checks. Last reviewed: 2026-04-07. Specs change — verify against the official docs before production use.
Frequently Asked Questions
What is Brevo (Sendinblue)'s AEO score?
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Brevo (Sendinblue) has an AEO score of 0.80 and is rated A (Functional agent integration). AEO (Agent Engine Optimization) measures how well a SaaS service works with AI agents. Scores range from 0.00 to 1.00, with grades from AAA (best) to D (not agent-ready).
Is Brevo (Sendinblue) AI-agent-ready?
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Brevo (Sendinblue) is currently connectable for AI agent use. API access is available but no dedicated MCP server has been published yet. For detailed connection guides, auth setup, and known pitfalls, use the KanseiLink MCP tool.
How does Brevo (Sendinblue) compare to other Marketing services?
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In the Marketing category, Brevo (Sendinblue) is rated A. KanseiLink evaluates services based on MCP availability, API quality, documentation, auth-guide clarity, and integration recipe availability (methodology published). Visit the full rankings at kansei-link.com to see how Brevo (Sendinblue) compares.
How can I integrate Brevo (Sendinblue) with an AI agent?
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The fastest way to integrate Brevo (Sendinblue) with an AI agent is through KanseiLink MCP. Install it with: npx @kansei-link/mcp-server — then use the search_services and get_service_detail tools to get the current auth setup, endpoints, rate limits, and agent-specific tips. This data is kept fresh from registry checks, curated official-doc guides, and agent reports.
How do I authenticate with Brevo (Sendinblue)?
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API key in api-key header. Generate at app.brevo.com > SMTP & API. Setup: 1. Go to Brevo > SMTP & API > API Keys. 2. Generate v3 API key. 3. Pass in 'api-key' header.
What are Brevo (Sendinblue)'s API rate limits?
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Depends on plan. Starter: 100 emails/hour. Free: 300 emails/day.