# Amazon EventBridge vs Upstash QStash (slim)

> Amazon EventBridge scores 73.7 (BB) to Upstash QStash's 72.3 (BB) for sending webhooks. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/amazon-eventbridge-vs-upstash-qstash.md (~2,450 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/amazon-eventbridge-vs-upstash-qstash.json · canonical https://www.anchorterminal.com/compare/amazon-eventbridge-vs-upstash-qstash
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Amazon EventBridge scores 73.7 (BB) on agent readiness against Upstash QStash's 72.3 (BB), and leads in 3 of 7 scored categories. Upstash QStash leads on reliability, agent ergonomics and payments & pricing. Both do sending webhooks.

- Amazon EventBridge: BB 73.7, rank #83 of 950 · https://www.anchorterminal.com/tools/amazon-eventbridge.min.md
- Upstash QStash: BB 72.3, rank #109 of 950 · https://www.anchorterminal.com/tools/upstash-qstash.min.md
- Amazon EventBridge, good for Teams already on AWS that want events routed between AWS services, their own code and outside HTTPS endpoints under IAM, with retention and replay on the bus. Ahead on Security & auth, 88 against 61; Transparency & trust, 87 against 81.
- Upstash QStash, good for Agents and serverless apps that need a delayed, retried or scheduled HTTP call without running a queue. Ahead on Reliability, 83 against 73; Agent ergonomics, 83 against 73; Payments & pricing, 40 against 35. Also Free to start without a card.

| Category | Amazon EventBridge | Upstash QStash |
| --- | --- | --- |
| Reliability (16%) | 73 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 82 | 78 |
| Agent ergonomics (13%) | 73 | 83 |
| Security & auth (14%) | 88 | 61 |
| Payments & pricing (10%) | 35 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 75 | 77 |
| Transparency & trust (7%) | 87 | 81 |

| Fact (where they differ) | Amazon EventBridge | Upstash QStash |
| --- | --- | --- |
| Vendor | Amazon Web Services | Upstash |
| Hosted endpoint | `https://events.us-east-1.amazonaws.com` | `https://qstash.upstash.io/v2` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Pricing | Pay per use | Freemium |
| Licence | Proprietary service under the AWS Customer Agreement. The AWS SDKs, the API models and the agent toolkit skill are Apache-2.0 | Proprietary hosted service under Upstash's terms of service. The TypeScript and Python SDKs and the MCP server are MIT |
| Tools exposed | none | 10 |
| Read-only variant documented | no | yes |
| MCP registry | not listed | `io.github.upstash/mcp-server` |
| Last release | 2026-09-24 | 2026-09-29 |
| Terms last updated | 2026-08-14 |  |
| Privacy policy last updated | 2026-05-18 |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 3.2M npm/wk | 269 stars, 816k npm/wk, 91k PyPI/wk |