# ToolOracle UVO Full — 8-Layer Agent Action Validation & Audit

> ToolOracle UVO Full — 8-Layer Agent Action Validation & Audit is a paid API for AI agents from tooloracle.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Performs a comprehensive 8-layer safety validation of an AI agent action (schema, measurability, reversibility, containment, danger, existence, citation, commitment) and returns a cryptographically signed audit receipt (ECDSA P-256) for compliance and governance.

## Facts

- Endpoint: POST https://tooloracle.io/v2/uvo_full
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tooloracle-io-4f83477d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_W7iId_2n8tQwLKgBpMzWr

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tooloracle-io-4f83477d -d '<json body>'
```

Example prompt: Before you execute that wire transfer action, run it through a full 8-layer safety audit — schema, reversibility, danger, containment, the works — and give me a signed cryptographic receipt I can use as compliance evidence for our DORA audit trail.

## When to prefer this

Choose this endpoint when an AI agent is about to execute a high-stakes, potentially irreversible, or regulated action — such as a financial transaction, regulatory submission, content publish, or code deployment — and you need both a safety gate and a cryptographically verifiable audit receipt. It is specifically suited for EU-regulated environments (MiCA, DORA, AMLR) where compliance evidence is mandatory. Prefer this over simpler single-dimension validators when you need the full 8-layer deep check and a signed receipt.

## Known failure modes

- Malformed action schema returns schema-layer BLOCK with validation errors
- Unrecognized action type may return existence-layer WARN or BLOCK
- Irreversible high-stakes action flagged with BLOCK and reversibility failure detail
- Payment failure (x402) returns 402 with payment instructions
- Timeout or service unavailability returns 503
- Missing required action fields returns 400 with field-level error detail

## How this service works

AI agent action validation + audit — comprehensive 8-layer deep check: schema, measurability, reversibility, containment, danger, existence, citation, commitment. Production-grade agent safety guardrail with cryptographic receipt (ECDSA P-256, audit-ready). For high-stakes autonomous workflows: financial transactions, regulatory submissions, content publishing, code deployment. EU MiCA / DORA / AMLR compliance evidence.

## Output

Returns a structured verdict (ALLOW, WARN, or BLOCK) with detailed results for each of the 8 validation layers (schema, measurability, reversibility, containment, danger, existence, citation, commitment), an overall risk score, and a cryptographically signed audit receipt using ECDSA P-256 suitable for regulatory compliance evidence under EU MiCA, DORA, and AMLR frameworks.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tooloracle-io-4f83477d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tooloracle.io](https://www.zero.xyz/host/tooloracle.io/llms.txt)