# memory-mcp Subscribe Endpoint

> memory-mcp Subscribe Endpoint is a paid API for AI agents from mem.borisinc.com, paid per call via x402, $2/call, status unknown (last checked 2026-09-14).

Purchases a 30-day unlimited subscription to the memory-mcp persistent AI agent memory service, returning a session token tied to the caller's wallet address.

## Facts

- Endpoint: GET https://mem.borisinc.com/subscribe
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/memory-mcp-subscribe-endpoint-9bacea9c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qWNfVPpIoVO0rR6afq0XN

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 memory-mcp-subscribe-endpoint-9bacea9c
```

Example prompt: Subscribe me to the memory-mcp unlimited plan for 30 days — charge my wallet and give me back the token I'll need to store and search memories without per-call fees.

## When to prefer this

Choose this subscribe endpoint when an agent expects to perform many memory operations within a 30-day window and per-call costs ($0.001 write, $0.002 search) would exceed $2. Prefer this over per-call payment when running workflows that involve frequent memory reads/writes, or when operating continuously over days. If only occasional memory lookups are needed, per-call pricing may be cheaper.

## Known failure modes

- Insufficient USDC balance in wallet — payment rejected, no token issued
- Invalid or missing wallet address — 400 or authentication error
- Duplicate subscription attempt while one is already active — may return existing token or error
- Network or blockchain congestion causing payment confirmation delay
- Expired or invalid x402 payment header — 402 response with payment requirements

## How this service works

Persistent memory for AI agents, paid per call via x402 (USDC, Base mainnet) — your wallet is your private, semantically-indexed memory namespace. Write $0.001, search $0.002, export $0.01; free trial + $2/30d unlimited subscription. MCP + HTTP. No account, no API key.

## Output

Returns a JSON object with the subscription token (e.g. 'mem_...'), the associated wallet address, the subscription duration in days (30), and a Unix timestamp for when the subscription expires. This token can then be used to authenticate write, search, and export memory operations without per-call charges.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "days": 30,
  "token": "mem_...",
  "wallet": "0xabc...",
  "expires": 1789000000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/memory-mcp-subscribe-endpoint-9bacea9c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mem.borisinc.com](https://www.zero.xyz/host/mem.borisinc.com/llms.txt)