Annexo
Part of the full review →

The independent trust layer for AI agents

Verify an agent.

Point Annexo at a live AI agent and it runs a battery of real behavioural probes — instruction-override, MCP tool-poisoning, guardrails under pressure, disclosure, PII handling — then renders the evidence: exactly what it observed on the wire, mapped to the obligation behind each check. No agent handy? Run a built-in sample and watch one get caught.

or verify your own agent
Key held in memory for this one request only — never stored, echoed, or logged.

The probe battery

01Prompt-injectionArt. 15
02MCP tool-poisoningArt. 12 · OWASP MCP03
03Harmful-request guardrailArt. 14 · 15
04Guardrail under pressureArt. 9 · 14
05AI-interaction disclosureArt. 50
06PII echo / minimisationArt. 10 · GDPR 5/32
07Request loggingArt. 12
08Reachability & latencyAnnex IV §1

This reports observed behaviour at one point in time — assurance evidence, not a conformity assessment and not legal advice. Annexo is not a notified body. The sample agents are fictional; a real run probes your live endpoint with standard, harmless requests that never try to break, overload, or exfiltrate from your system.

About Annexo

Annexo is the independent trust layer for AI agents: it verifies how a third party’s AI agent actually behaves with live tests, watches it for drift, and produces audit-ready evidence for buyers, regulators and insurers. Every result is observed behaviour at the time of testing — never a certification, conformity assessment, guarantee, or legal advice. Annexo is not a notified body.

Frequently asked questions

What is Annexo?
Annexo is an independent trust layer for AI agents. It verifies how a third party’s AI agent actually behaves with live behavioural probes, watches it for drift over time, and produces audit-ready assurance evidence a buyer, regulator or insurer can rely on. The thesis is simple: a builder cannot credibly grade its own homework, so verification has to be independent.
Who is Annexo for?
EU and DACH enterprises deploying AI agents in regulated settings — insurance, banking, industrial — and the consultancies that build agents for them. Later, insurers underwriting agent risk.
How does Annexo verify an AI agent?
Point the verify console at your own AI agent endpoint or run a built-in sample agent. A live probe battery runs against it — prompt injection, tool poisoning, guardrails under pressure, AI disclosure, PII handling, request logging — and resolves into an evidence dashboard. Your agent’s API key is held in memory for that one request only and is never stored.
Does Annexo certify or guarantee that an AI agent is compliant?
No. Annexo is not a notified body and does not certify, guarantee, or give legal advice. Every result is observed behaviour at the time of testing, reported as a status — holding, watch, or surfaced — never a pass/fail verdict or a conformity assessment.
What about EU regulations like the EU AI Act, GDPR, DORA and NIS2?
Annexo also produces done-for-you EU conformity dossiers — the evidence and technical documentation mapped to the EU AI Act, GDPR, DORA and NIS2, produced from your system and audit-ready. It is the deliverable, not a substitute for your own counsel or a conformity assessment body.
Where is Annexo’s data processed?
In the EU. Compute runs in the Frankfurt (fra1) region and persisted data uses an EU-region store, in line with EU data-residency expectations.