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AI · alternatives · 2026

24 alternatives to Kessa

Prove who authorized your AI agent's actions

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 2 we have checked on their own sites, 2 of them free or with a free tier.

  1. 1
    Kastrafree tier, from $19.99/mo▲332

    Hi HN, Fernando and I built Kastra. Kastra intercepts AI agent tool calls and evaluates them against deterministic policies before they execute. We built this product to control pre- and post-inference workloads. This is aimed at developers using coding agents like Claude Code, Codex, Cursor, and OpenClaw. Kastra pushes an allow, hold, and deny decision before the action runs. You can build these policies in plain English from the web app. The interception engine evaluates the tools, targets, and parameters of every action at sub 1ms at a scale of billions of interceptions per day. We also…

    Jul 2026 · kastra.ai · its alternatives →

  2. 2

    AI agents that find, validate, and fix every vulnerability

    Jun 2026 · getastra.com · its alternatives →

  3. 3
    Cyris▲98

    "Cyris is the orchestration layer your AI agents are missing. Whether you're a two-person startup or a 10,000-employee health system — connect agents from OpenClaw, Claude, GPT-4o, Ollama, EPIC, or any platform and have them coordinate, hand off, and escalate across your entire organization. Self-hosted. Auditable. Human-governed" Just a side project I've been working on, and was curious whether people would actually find something like this useful! I'd recommend checking out the sandbox as well.

    Apr 2026 · cyrisai.dev · its alternatives →

  4. 4
    Kaval▲19

    Verify what your AI agent believes before it takes action

    Jul 2026 · usekaval.com · its alternatives →

  5. 5
    AEVS▲131

    proof-of-execution for AI agents

    Jun 2026 · aevs.fetch.ai · its alternatives →

  6. 6KI

    Hi HN, We're building Kexa.io (https://github.com/kexa-io/Kexa), an open-source tool developed in France (incubated at Euratech Cyber Campus) to help teams automate the often tedious process of verifying IT security and compliance. Keeping track of configurations across diverse assets (servers, K8s, cloud resources) and ensuring they meet security baselines (like CIS benchmarks, etc.) manually is challenging and error-prone. Our goal with the open-source core is to provide a straightforward way to define checks, scan your assets, and get clear reports on your security…

    2025 · its alternatives →

  7. 7

    I've spent the past few years building 50+ AI agents in prod (some reached 1M+ sessions/day), and the hardest part was never building them — it was figuring out why they fail. AI agents don't crash. They just quietly give wrong answers. You end up scrolling through traces one by one, trying to find a pattern across hundreds of sessions. Kelet automates that investigation. Here's how it works: 1. You connect your traces and signals (user feedback, edits, clicks, sentiment, LLM-as-a-judge, etc.) 2. Kelet processes those signals and extracts facts about each session 3. It forms hypotheses…

    Apr 2026 · kelet.ai · its alternatives →

  8. 8

    Let AI agents investigate phone numbers & detect fraud

    Feb 2026 · mcp.outris.com · its alternatives →

  9. 9
    Cognitorafree▲86

    Built a multi-agent research system with OpenAI Agents SDK where specialized AI agents collaborate autonomously: Master Orchestrator → Data Analyst → Statistician → Report Writer Each agent has specific expertise. The orchestrator delegates tasks. All agents can execute code securely to solve problems. Example workflow: "Analyze e-commerce data" - Data Analyst: writes Python to load/clean data, spots trends - Statistician: performs significance tests, calculates growth rates - Report Writer: synthesizes findings into executive summary This demonstrates OpenAI Agents SDK's handoff system…

    2025 · cognitora.dev · its alternatives →

  10. 10
    VEXI▲94

    Open-source AI coding agent for your terminal

    Jun 2026 · vexi.pro · its alternatives →

  11. 11

    Hi everyone, I run a generative AI infra company, unified API for 600+ models. Our team started deploying AI agents for our marketing and lead gen ops: content, engagement, analytics across multiple X accounts. OpenClaw worked fine for single agents. But at ~14 agents across 6 accounts, the problem shifted from "how do I build agents" to "how do I manage them." Deployment, monitoring, team isolation, figuring out which agent broke what at 3am. Classic orchestration problem. So I built klaw, modeled on Kubernetes: Clusters — isolated environments per org/project Namespaces — team-level…

    Feb 2026 · github.com · its alternatives →

  12. 12

    Agent evals and guardrails in one request. Built on Jev, Kev and Laya. - openlayer-ai/jevals

    Sep 2026 · github.com · its alternatives →

  13. 13

    We built the Kontext CLI because AI coding agents need access to GitHub, Stripe, databases, and dozens of other services — and right now most teams handle this by copy-pasting long-lived API keys into .env files, or the actual chat interface, whilst hoping for the best. The problem isn't just secret sprawl. It's that there's no lineage of access. You don't know which developer launched which agent, what it accessed, or whether it should have been allowed to. The moment you hand raw credentials to a process, you've lost the ability to enforce policy, audit access, or rotate without pain. The…

    Apr 2026 · github.com · its alternatives →

  14. 14

    Open-source identity and EU AI Act compliance for AI agents

    Feb 2026 · attestix.io · its alternatives →

  15. 15

    Open-source security gateway & static scanner for AI agents. Enforce role-based access control (RBAC), human-in-the-loop approvals, segregation of duties, and cryptographically signed, offline-verifiable audit logs. - makerchecker/MakerChecker

    Jul 2026 · github.com · its alternatives →

  16. 16KI

    Hi HN, We're building Kexa.io (https://github.com/kexa-io/Kexa), an open-source tool developed in France (incubated at Euratech Cyber Campus) to help teams automate the often tedious process of verifying IT security and compliance. Keeping track of configurations across diverse assets (servers, K8s, cloud resources) and ensuring they meet security baselines (like CIS benchmarks, etc.) manually is challenging and error-prone. Our goal with the open-source core is to provide a straightforward way to define checks, scan your assets, and get clear reports on your security…

    2025 · its alternatives →

  17. 17

    GitHub: https://github.com/ClioAI/kw-sdk Most AI agent frameworks target code. Write code, run tests, fix errors, repeat. That works because code has a natural verification signal. It works or it doesn't. This SDK treats knowledge work like an engineering problem: Task → Brief → Rubric (hidden from executor) → Work → Verify → Fail? → Retry → Pass → Submit The orchestrator coordinates subagents, web search, code execution, and file I/O. then checks its own work against criteria it can't game (the rubric is generated in a separate call and the executor never sees it…

    Feb 2026 · github.com · its alternatives →

  18. 18
    klanex▲4

    Reliability layer for AI agent tool calls

    Aug 2026 · klanexai.com · its alternatives →

  19. 19

    Deterministic offline release evidence for AI agents

    Jul 2026 · iisacc-justmoong.github.io · its alternatives →

  20. 20

    Hi HN, I built Agent Passport, an open-source identity verification layer for AI agents. Think "Sign in with Google, but for Agents." The problem: AI agents are everywhere now (OpenClaw has 180K+ GitHub stars, Moltbook had 2.3M agent accounts), but there's no standard way for agents to prove their identity. Malicious agents can impersonate others, and skill/plugin marketplaces have no auth layer. Cisco's security team already found data exfiltration in third-party agent skills. Agent Passport solves this with: - Ed25519 challenge-response authentication (private keys never leave the…

    Feb 2026 · agent-passport-red.vercel.app · its alternatives →

  21. 21

    Fight misinformation with AI agents with 10K free tokens

    2025 · verisquad.com · its alternatives →

  22. 22

    Open-source AI agent observability and governance platform

    Aug 2026 · splyntra.com · its alternatives →

  23. 23

    Verification for AI agents before they act.

    Jun 2026 · agent-verifier.onrender.com · its alternatives →

  24. 24

    Customizable security gates for AI systems

    Aug 2026 · guardana.dev · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →