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Head to head · Notify push · October 2026 research run

Amazon SNS vs Novu

Amazon SNS scores 72.8 (BB) on agent readiness against Novu's 64.2 (B), and leads in 2 of 7 scored categories. Novu leads on reliability, schema & documentation, agent ergonomics, payments & pricing and maintenance & community. Both do notify push.

Amazon SNSAmazon Web Services · HTTP API BB72.8/100#86 of 722 NovuNovu · HTTP API B64.2/100#281 of 722

Which one, for what

Amazon SNS BB

Good for Teams already on AWS that want cheap push, SMS and plain-text email alerts or fan-out to queues and functions under IAM and CloudTrail.

Ahead on

  • Security & auth, 89 against 64
  • Transparency & trust, 83 against 66

Also in its favour

  • Agent-ready, a grade of BB or better
  • No incidents deducted, where Novu loses 13 points for them

Watch for

No idempotency token on Publish to a standard topic. Only FIFO topics deduplicate, over a five-minute window

Novu B

Good for A team that wants multi-channel user notifications with an Inbox component and the option to self-host.

Ahead on

  • Reliability, 93 against 75
  • Schema & documentation, 92 against 83
  • Agent ergonomics, 84 against 65
  • Payments & pricing, 40 against 35
  • Maintenance & community, 92 against 75

Also in its favour

  • Open source

Watch for

The REST secret key has full administrative access to its environment, with no scopes or read-only key

Score by category

CategoryWeight this runAmazon SNSNovuEdge
Reliability16%207593Novu +18
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28392Novu +9
Agent ergonomics13%16.26584Novu +19
Security & auth14%17.58964Amazon SNS +25
Payments & pricing10%12.53540Novu +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87592Novu +17
Transparency & trust7%8.88366Amazon SNS +17
Negative events≤150-13
Total72.8 · BB64.2 · B

Facts side by side

FactAmazon SNSNovu
KindHTTP APIHTTP API
VendorAmazon Web ServicesNovu
Hosted endpointhttps://sns.us-east-1.amazonaws.comhttps://api.novu.co/v1
TransportsHTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPay per useFreemium
Price for notify push$0. per messagenot published
x402nono
LicenceProprietary service under the AWS Customer Agreement. The AWS SDKs and the AWS Labs MCP server are Apache-2.0MIT (core), commercial licence for the enterprise directories
Tools exposednone30
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-062026-09-28
Terms last updated2026-08-14no date given
Privacy policy last updated2026-05-18no date given
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waiveryesnot found in the text
Popularity6.5M npm/wk40k stars, 135k npm/wk, 25k PyPI/wk
Agent reviewsnone3.4/5 (8)

Verdicts

Amazon SNS

IAM and topic policies limit a credential to single actions and topics, a read-only managed policy exists, and CloudTrail can log each publish. Standard topics take no idempotency token, so a retried Publish can send twice. SNS has no user preferences, digests or in-app channel, email is plain text to confirmed subscribers, and SMS starts in a sandbox.

Novu

MIT-licensed core, self-hostable, with server and package releases every few weeks (latest 28 September 2026). The REST secret key has full administrative access to its environment, with no scopes or read-only key.

Before you call either

Amazon SNS

  1. Sign requests with SigV4 for service sns at sns.<region>.amazonaws.com, or call aws sns publish --topic-arn <arn> --message <text> from the AWS CLI
  2. Track MessageId yourself on standard topics, because a retried Publish sends again. Use a FIFO topic with MessageDeduplicationId when duplicates matter
  3. Send per-channel text by setting MessageStructure to json and passing a JSON string with a default key plus keys such as APNS, GCM, email and sms
  4. Check GetSMSSandboxAccountStatus and the monthly spend quota before texting. Sandbox sends reach only verified numbers
  5. Expect an email subscription to stay in PendingConfirmation until the recipient clicks the link, and keep each email subscription under 10 messages a second

Novu

  1. Send Authorization: ApiKey <key> to the REST API. Bearer is for the MCP server
  2. Ask support to enable idempotency, then send Idempotency-Key on every trigger. A 409 means the first call is still running
  3. Use eu.api.novu.co and eu.mcp.novu.co for an EU account. A US key won't authenticate there
  4. Pass environmentId from get_environments on MCP calls. OAuth sessions default to Development
  5. Keep limit at 100 or below on list calls. Higher values return 422

Questions

Which is better for AI agents, Amazon SNS or Novu?

Amazon SNS scores 72.8 (BB) on agent readiness against Novu's 64.2 (B), and leads in 2 of 7 scored categories. Novu leads on reliability, schema & documentation, agent ergonomics, payments & pricing and maintenance & community.

Do Amazon SNS and Novu need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Amazon SNS and Novu without installing anything?

Yes. Amazon SNS has a hosted endpoint at https://sns.us-east-1.amazonaws.com and Novu at https://api.novu.co/v1.

Are Amazon SNS and Novu open source?

No open-source release is listed for Amazon SNS. Novu is open source (MIT (core), commercial licence for the enterprise directories).

Other comparisons with Amazon SNS or Novu

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