One SDK. Built for

LLM01: Prompt InjectionAddressed by Prompt Injection Detection

AI agent security infrastructure. Two lines of code. 13 features active instantly.

Free

£0 / month
  • 1 AI agent
  • Full SDK security suite
  • Prompt injection detection
  • Action audit logs

Business

£49 / month
  • Unlimited agents
  • Everything in Starter
  • Emergency lockdown
  • Behavioural baseline AI
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Built for the AI-native era.

AI agents are making real decisions. Altheris ensures every decision is authorised, audited, and traceable.

Attack Prevention.

Prompt injection, scope violations, and credential theft are blocked at runtime before they can execute — with zero changes to your agent logic.

Cryptographic Certainty.

Every agent on Altheris receives a signed Ed25519 identity passport binding it to its owner. Every action is logged in a permanent tamper-evident record. Permissions are locked into the passport itself.

Verify Anything, Anywhere.

Anyone — a business, a consumer, a regulator — can verify any agent's identity, permissions and full action history in real time through the public API. No account needed.