# Innovalyxx Sovereign Edge – memory.attest

> Innovalyxx Sovereign Edge – memory.attest is a paid API for AI agents from edge.innovalyxx.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-17).

Creates a cryptographically signed attestation over an existing encrypted memory entry, anchoring its content hash to the owner's wallet identity via EIP-191 signature.

## Facts

- Endpoint: POST https://edge.innovalyxx.com/mcp/tools/memory.attest
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/innovalyxx-sovereign-edge-memory-attest-4cac0252
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_01MpQzHqynm4gOkUt0a2E

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 innovalyxx-sovereign-edge-memory-attest-4cac0252 -d '<json body>'
```

Example prompt: Attest my memory entry with UUID 'a1b2c3d4-e5f6-7890-abcd-ef1234567890' — my owner wallet is 0xAbCdEf1234567890AbCdEf1234567890AbCdEf12 and here is my EIP-191 signature over the attest message: 0xdeadbeef...

## When to prefer this

Choose this endpoint when an AI agent needs to create a cryptographically verifiable, wallet-bound attestation over a specific encrypted memory entry — particularly for audit trails, agent trust chains, compliance evidence, or provenance certification where an immutable envelope hash is required. Prefer it over generic signing services when the target record is already stored in the Innovalyxx encrypted memory system and you need the attestation envelope tied to that specific entry's content hash.

## Known failure modes

- Entry UUID does not belong to the provided owner_wallet — returns error indicating ownership mismatch
- Wallet signature fails EIP-191 verification — returns invalid signature error
- Entry UUID is malformed or missing — schema validation error
- Insufficient USDC balance or x402 payment failure — payment error before tool execution
- Entry not found — returns 404-equivalent error if UUID does not exist in the memory store

## How this service works

Verified cyber-physical AI tools for autonomous agents. Pay per call via x402 (USDC on Base). 26 tools covering MRV verification, biodiversity, skip twin, site certification, agent trust, transaction evidence, protocol bridging, GEO audit, IATP reputation, ABV maturity, NIST TEVV alignment, and encrypted memory write/read/query/grant/revoke/tool_context/pricing_hint/subscription_quote/attest/verify_attestation.

## Output

Returns a JSON object with ok status, the tool name ('memory.attest'), a human-readable note, a payment receipt object, a signed attestation envelope containing the entry ID and content hash bound to the owner wallet, and an envelope_hash for downstream verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "entry_id": {
   "type": "string",
   "minLength": 1,
   "description": "UUID of the memory entry to attest. Must belong to owner_wallet."
  },
  "owner_wallet": {
   "type": "string",
   "maxLength": 42,
   "minLength": 42,
   "description": "0x-prefixed owner wallet. Only the owner can attest."
  },
  "wallet_signature": {
   "type": "string",
   "description": "EIP-191 signature over the attest message (entry, owner, content hash)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "note": "note",
  "tool": "memory.attest",
  "payment": {},
  "envelope": {},
  "envelope_hash": "envelope_hash"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/innovalyxx-sovereign-edge-memory-attest-4cac0252/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from edge.innovalyxx.com](https://www.zero.xyz/host/edge.innovalyxx.com/llms.txt)