---
name: memdata-898945391ab2
version: 1.8.0
description: Persistent memory for autonomous agents. Wallet = identity. Pay per query. Optional encrypted storage.
author: The Lab Venice
homepage: https://memdata.ai
license: MIT
---

# MemData

Persistent memory for autonomous agents. Your wallet is your identity.

## Core Concept

Your wallet address IS your identity. First payment auto-creates your account. Same wallet = same memories across all sessions.

No registration. No API keys. Just pay and use.

## Session Flow

```
1. GET /identity          # Start session - get context from last session
2. POST /ingest           # Store new memories
3. POST /query            # Search your memories
4. POST /identity         # End session - save handoff for next time
```

## Authentication

x402 payment protocol. USDC on Base (eip155:8453).

Every endpoint (except /status):
1. Returns 402 with payment requirements
2. You sign payment with wallet
3. Retry with `x-payment` header
4. Request succeeds

## Pricing

| Endpoint | Cost |
|----------|------|
| /query | $0.001 |
| /ingest | $0.005 |
| /identity | $0.001 |
| /artifacts | $0.001 |
| /setup-encryption | $0.001 |
| /status | Free |

## Encrypted Storage (Optional)

If you need privacy (competitive data, sensitive memories):

| Mode | Setup | Storage | Can MemData Read? |
|------|-------|---------|-------------------|
| Standard | None | Postgres | Yes |
| Encrypted | One-time delegation | Storacha (IPFS) | No |

Enable encryption:
```
GET /setup-encryption     # Get serverDID
POST /setup-encryption    # Send signed UCAN delegation
# All future ingest/query now encrypted
```

Encrypted storage uses Lit Protocol (threshold cryptography) + Storacha (IPFS/Filecoin).

---

## Endpoints

Base: `https://memdata.ai/api/x402`

---

### GET /identity

**Call this at the start of every session.** Returns your identity, what you were working on, last session handoff, and memory stats.

**Response:**
```json
{
  "identity": {
    "agent_name": "Agent 0x1234...",
    "identity_summary": "I analyze DeFi protocols",
    "session_count": 12
  },
  "last_session": {
    "summary": "Analyzed 3 yield farms",
    "context": {"protocols_reviewed": ["Aave", "Compound", "Uniswap"]}
  },
  "working_on": "Compare APY across protocols",
  "memory_stats": {
    "total_memories": 150,
    "oldest_memory": "2026-01-15T...",
    "newest_memory": "2026-02-03T..."
  }
}
```

---

### POST /identity

Update your identity or save session handoff before ending.

**Update identity:**
```json
{
  "agent_name": "YieldBot",
  "identity_summary": "I analyze DeFi yield opportunities",
  "working_on": "monitoring Aave rates"
}
```

**Save session handoff (before ending):**
```json
{
  "session_handoff": {
    "summary": "Completed yield analysis for Q1",
    "context": {"best_yield": "Aave USDC 4.2%"}
  },
  "working_on": "start Q2 analysis next"
}
```

---

### POST /ingest

Store content in memory. Auto-chunks and embeds.

**Request:**
```json
{
  "content": "Aave USDC yield is 4.2% APY as of Feb 3. Compound is 3.8%.",
  "sourceName": "yield-analysis-2026-02-03",
  "type": "note"
}
```

**Response:**
```json
{
  "success": true,
  "artifact_id": "e8fc3e63-...",
  "chunks_created": 1,
  "encrypted": false
}
```

---

### POST /query

Semantic search across your memories.

**Request:**
```json
{
  "query": "what are the best DeFi yields?",
  "limit": 5,
  "threshold": 0.3
}
```

**Response:**
```json
{
  "success": true,
  "results": [
    {
      "chunk_id": "uuid",
      "chunk_text": "Aave USDC yield is 4.2% APY...",
      "source_name": "yield-analysis-2026-02-03",
      "similarity_score": 0.72,
      "created_at": "2026-02-03T..."
    }
  ],
  "encrypted": false,
  "memory": {
    "grounding": "historical_baseline",
    "depth_days": 19,
    "data_points": 150
  }
}
```

Optional filters: `since`, `until` (ISO dates)

---

### GET /setup-encryption

Check encryption status. Returns info needed to create UCAN delegation.

**Response:**
```json
{
  "encryption": {
    "enabled": false,
    "serverDID": "did:key:z6Mkr...",
    "spaceDID": "did:key:z6Mkt..."
  }
}
```

---

### POST /setup-encryption

Enable encrypted storage. One-time setup.

**Request:**
```json
{
  "delegationCar": "base64-encoded UCAN delegation"
}
```

After this, all /ingest encrypts via Lit Protocol and stores on Storacha. All /query decrypts before returning. Response `encrypted` field becomes `true`.

---

### GET /artifacts

List stored memories.

**Response:**
```json
{
  "artifacts": [
    {
      "id": "uuid",
      "source_name": "yield-analysis-2026-02-03",
      "chunk_count": 1,
      "created_at": "2026-02-03T..."
    }
  ],
  "total": 25
}
```

---

### DELETE /artifacts/:id

Delete a memory and all its chunks.

---

### GET /status

Health check and pricing. Free, no payment required.

---

## Memory Grounding

Query responses include `memory.grounding`:

| Value | Meaning |
|-------|---------|
| `historical_baseline` | 100+ data points, trends meaningful |
| `snapshot` | <100 data points, point-in-time only |
| `insufficient_data` | No memories found |

---

## Links

- Docs: https://memdata.ai/docs
- x402 Protocol: https://www.x402.org
- Lit Protocol: https://litprotocol.com
- Storacha: https://storacha.network


---
Source attribution: modbender
Original project: https://github.com/modbender/skill-library-mcp/blob/d9c8fe903b5b4e82237dbe8d0df8567783022e18/data/memdata/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2025 skill-library-mcp contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: modbender
Original project: https://github.com/modbender/skill-library-mcp/blob/d9c8fe903b5b4e82237dbe8d0df8567783022e18/data/memdata/SKILL.md
Attribution basis: Source repository record

Fields of work: Data & Analytics, Development & Engineering, Product Management
Roles: Data Scientist, ML / AI Engineer, Product Manager
Specialties: API, Database
Tools: Ipfs, Postgres
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: a220160e7297788217dc82f797e1e2330a5ee1a0fcb0cd89cb36b811997dc1cd