Alternatives
Products that do what LangProtect Guardia does
Prompt injection’s least favorite product.
- 1

- 2

- 3

- 4

- 5

- 6

Block prompt inject & cut token costs for AI browser agents
Jun 2026 · github.com
- 7

- 8

- 9

Prompt injection and token savings - #1 in benchmarks
Jul 2026 · constellationgate.ai
- 10
- 11

- 12

- 13

- 14
- 15

- 16

- 17OS
Hi HN, Matvey, Ildar, Joey, and Dominik here. If you're building LLM agents that use tools, you're probably worried about prompt injection attacks that can hijack those tools. We were too, and found that solutions like prompt-based filtering or secondary "guard" LLMs can be unreliable. Our thesis is that agent security should be handled at the network level between the agent and the LLM, just like a traditional web application firewall. So we built Archestra Platform: an open-source gateway that acts as a secure proxy for your AI agents. It's designed to be a deterministic firewall against…
Oct 2025 · archestra.ai
- 18
- 19

- 20

- 21LC
2023 · github.com
- 22

- 23

- 24
Ranked by how close each launch is in meaning, then by votes. Refine with a description →