# PubNub vs Svix (slim)

> Svix scores 74 (BB) to PubNub's 68.1 (B) for sending webhooks. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/pubnub-vs-svix.md (~2,300 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/pubnub-vs-svix.json · canonical https://www.anchorterminal.com/compare/pubnub-vs-svix
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Svix scores 74 (BB) on agent readiness against PubNub's 68.1 (B), and leads in 5 of 7 scored categories. Both do sending webhooks.

- PubNub: B 68.1, rank #230 of 950 · https://www.anchorterminal.com/tools/pubnub.min.md
- Svix: BB 74, rank #79 of 950 · https://www.anchorterminal.com/tools/svix.min.md
- PubNub, good for Live fan-out to many connected clients with presence and history, and for an agent that manages a PubNub account through MCP. Also Runs on your own machine.
- Svix, good for A product that must send webhooks to its own customers with signing, retries, replay and a consumer portal, and an agent that builds or operates that integration. Ahead on Reliability, 85 against 76; Schema & documentation, 87 against 77; Agent ergonomics, 86 against 71; Maintenance & community, 88 against 83; Transparency & trust, 86 against 64. Also Agent-ready, a grade of BB or better; Open source.

| Category | PubNub | Svix |
| --- | --- | --- |
| Reliability (16%) | 76 | 85 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 87 |
| Agent ergonomics (13%) | 71 | 86 |
| Security & auth (14%) | 63 | 61 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 88 |
| Transparency & trust (7%) | 64 | 86 |

| Fact (where they differ) | PubNub | Svix |
| --- | --- | --- |
| Vendor | PubNub Inc. | Svix Inc. |
| Hosted endpoint | `https://ps.pndsn.com` | `https://api.svix.com` |
| Transports | HTTP, stdio | HTTP |
| Auth | OAuth or key | API key |
| Licence | Proprietary service under PubNub's Terms and Conditions. The SDKs and the MCP server on GitHub are source-available under the PubNub Software Development Kit Licence Agreement, which is not an OSI licence | MIT for the server, SDKs, CLI and Bridge in svix/svix-webhooks. The hosted service runs under Svix's terms of service and has functions the open-source server lacks |
| Tools exposed | 17 | none |
| MCP registry | `io.github.pubnub/mcp-server` | not listed |
| Last release | 2026-09-22 | 2026-10-06 |
| Terms last updated | 2023-05-05 | 2024-01-10 |
| Privacy policy last updated | 2026-04-01 | 2022-11-10 |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 284k npm/wk | 3.4k stars, 8.8M npm/wk, 2.4M PyPI/wk |