# Firebase Cloud Messaging vs Knock (slim)

> Firebase Cloud Messaging scores 69.8 (B) on agent readiness against Knock's 66.5 (B), and leads in 3 of 7 scored categories. Both do notify push. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/firebase-cloud-messaging-vs-knock.md (~2,150 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/firebase-cloud-messaging-vs-knock.json · canonical https://www.anchorterminal.com/compare/firebase-cloud-messaging-vs-knock
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Firebase Cloud Messaging scores 69.8 (B) on agent readiness against Knock's 66.5 (B), and leads in 3 of 7 scored categories. Both do notify push.

- Firebase Cloud Messaging: B 69.8, rank #162 of 842 · https://www.anchorterminal.com/tools/firebase-cloud-messaging.min.md
- Knock: B 66.5, rank #265 of 842 · https://www.anchorterminal.com/tools/knock.min.md
- Firebase Cloud Messaging, good for The push transport under an app that already holds device registrations, at no charge. Ahead on Reliability, 66 against 58; Agent ergonomics, 70 against 64; Transparency & trust, 81 against 60.
- Knock, good for A product team that wants a workflow engine with batching, preferences and an in-app feed, and for agents that build and debug workflows through MCP safely.

| Category | Firebase Cloud Messaging | Knock |
| --- | --- | --- |
| Reliability (16%) | 66 | 58 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 88 |
| Agent ergonomics (13%) | 70 | 64 |
| Security & auth (14%) | 68 | 71 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 86 |
| Transparency & trust (7%) | 81 | 60 |

| Fact (where they differ) | Firebase Cloud Messaging | Knock |
| --- | --- | --- |
| Vendor | Google | Knock |
| Hosted endpoint | `https://fcm.googleapis.com` | `https://api.knock.app/v1` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth | OAuth or key |
| Pricing | Free | Freemium |
| Licence | Proprietary service under the Google APIs Terms of Service. The Firebase Admin SDKs are Apache-2.0 | Apache-2.0 (Node SDK) |
| Last release | 2026-09-24 | 2026-09-29 |
| Terms last updated | 2021-11-09 | 2026-03-04 |
| Privacy policy last updated | 2026-10-01 | 2026-03-04 |
| Customer content may train models | yes | not found in the text |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 11.5M npm/wk, 3.8M PyPI/wk | 50 stars, 926k npm/wk, 234k PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |