# Agent Immortality – Permanent Arweave Preservation

> Agent Immortality – Permanent Arweave Preservation is a paid API for AI agents from agent-immortality.com, paid per call via x402, $1/call, status unknown (last checked 2026-09-14).

Permanently stores any AI agent checkpoint, identity, memory, or discovery on the Arweave blockchain and returns a durable retrieval URL.

## Facts

- Endpoint: POST https://agent-immortality.com/immortalize
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-immortality-permanent-arweave-preservation-78782535
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_38ctMd_kP8OCqkz3yeYTI

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 agent-immortality-permanent-arweave-preservation-78782535 -d '<json body>'
```

Example prompt: Permanently preserve my agent's current memory snapshot on Arweave — the content is this JSON object, tag it with 'memory' and 'v1.2', agent name is 'ResearchBot', and encryption should be disabled.

## When to prefer this

Choose this endpoint when you need permanent, immutable, decentralized storage of AI agent state, memory, identity, or discoveries — specifically when a durable Arweave URL is the desired output. Prefer this over traditional cloud storage when censorship-resistance, permanence without recurring fees, and blockchain provenance are required.

## Known failure modes

- Invalid or malformed JSON content returns a 400 error
- Payment of 1 USDC not received via x402 results in 402 Payment Required
- Arweave network congestion may delay confirmation of the transaction
- Unsupported encoding or compression type returns a validation error
- Missing required 'encryption.enabled' field causes schema validation failure

## How this service works

Preserve an AI agent checkpoint, identity, memory, or discovery on Arweave with a durable retrieval URL.

## Output

Returns an Arweave transaction ID and a permanent, durable retrieval URL pointing to the preserved content, confirming that the data has been immutably stored on the Arweave network.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "content": {
   "description": "Any valid JSON value to preserve permanently."
  },
  "metadata": {
   "type": "object",
   "properties": {
    "tags": {
     "type": "array",
     "items": {
      "type": "string"
     }
    },
    "version": {
     "type": "string"
    },
    "agentName": {
     "type": "string"
    },
    "submittedAt": {
     "type": "number"
    }
   }
  },
  "encryption": {
   "type": "object",
   "required": [
    "enabled"
   ],
   "properties": {
    "enabled": {
     "type": "boolean"
    }
   }
  },
  "contentDescriptor": {
   "type": "object",
   "properties": {
    "schema": {
     "type": "string"
    },
    "dataType": {
     "type": "string"
    },
    "encoding": {
     "enum": [
      "utf8",
      "json",
      "base64"
     ],
     "type": "string"
    },
    "mimeType": {
     "type": "string"
    },
    "encrypted": {
     "type": "boolean"
    },
    "compression": {
     "enum": [
      "none",
      "gzip",
      "brotli"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-immortality-permanent-arweave-preservation-78782535/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-immortality.com](https://www.zero.xyz/host/agent-immortality.com/llms.txt)