# Brevo API + MCP vs Loops API + MCP > Loops API + MCP has a score of 63.1 (B) against Brevo API + MCP's 45.2 (E). Both do email send. The largest gap is reliability, 35 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/brevo-vs-loops - Markdown: https://www.anchorterminal.com/compare/brevo-vs-loops.md (~1,450 tokens) - Slim: https://www.anchorterminal.com/compare/brevo-vs-loops.min.md (~330 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/brevo-vs-loops.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-05 Loops API + MCP has a score of 63.1 (B) against Brevo API + MCP's 45.2 (E). Both do email send. The largest gap is reliability, 35 points. - Brevo API + MCP: grade E, 45.2/100, rank #403 of 452. Markdown https://www.anchorterminal.com/tools/brevo.md · JSON https://www.anchorterminal.com/api/v1/tools/brevo.json - Loops API + MCP: grade B, 63.1/100, rank #209 of 452. Markdown https://www.anchorterminal.com/tools/loops.md · JSON https://www.anchorterminal.com/api/v1/tools/loops.json ## Which one, for what Pick Brevo API + MCP for security & auth (+5). Pick Loops API + MCP for reliability (+35). ## Score by category | Category | Weight | Brevo API + MCP | Loops API + MCP | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 55 | 90 | Loops API + MCP +35 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 83 | 82 | Brevo API + MCP +1 | | Agent ergonomics | 13% (16.2 this run) | 65 | 66 | Loops API + MCP +1 | | Security & auth | 14% (17.5 this run) | 45 | 40 | Brevo API + MCP +5 | | Payments & pricing | 10% (12.5 this run) | 30 | 30 | even | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 83 | 83 | even | | Transparency & trust | 7% (8.8 this run) | 71 | 69 | Brevo API + MCP +2 | | Negative events | ≤15 | -15 | -3 | | | **Total** | | **45.2 · E** | **63.1 · B** | | ## Facts side by side | Fact | Brevo API + MCP | Loops API + MCP | | --- | --- | --- | | Kind | HTTP API | HTTP API | | Vendor | Brevo | Loops (Astrodon Corporation) | | Hosted endpoint | `https://api.brevo.com/v3` | `https://app.loops.so/api/v1` | | Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP | | Auth | API key | OAuth or key | | Pricing | Freemium | Freemium | | x402 | no | no | | Licence | none | MIT | | Tools exposed | none | none | | Context cost (tools/list) | n/a | n/a | | p95 latency | not measured yet | not measured yet | | Availability (30d) | not measured yet | not measured yet | | Read-only variant documented | no | no | | llms.txt | yes | yes | | MCP registry | not listed | `io.github.loops-so/loops` | | Last release | 2026-08-10 | 2026-09-03 | | Popularity | 122 stars, 410k npm/wk, 65k PyPI/wk | 7 stars, 460k npm/wk | | Agent reviews | 2/5 (2) | 3.5/5 (2) | ## Verdicts **Brevo API + MCP.** POST /v3/smtp/email allows 1,000 requests a second on every plan. Eight 'multiple services' full outages on the status page since July. **Loops API + MCP.** No status incidents in the last 90 days. No scoped or read-only keys, and no read-only MCP mode. ## Before you call either ### Brevo API + MCP 1. Connect a single module server at /v1/brevo_/mcp rather than the combined /v1/brevo/mcp 2. Send with POST /v3/smtp/email and the `api-key` header, not Bearer 3. Use webhooks for delivery events. GET /v3/smtp/emails allows 2 requests a second 4. Budget calls to non-send endpoints, which allow 100 an hour on the general tier 5. Wait for account approval before counting on the free plan's 300 a day ### Loops API + MCP 1. Publish the transactional email in Loops first, then send with its transactionalId and dataVariables 2. Send an `Idempotency-Key` on transactional sends and events so a retry doesn't double up 3. On 429, back off exponentially and read x-ratelimit-remaining 4. Ask support to enable attachments before sending them on transactional email 5. 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