Port 402 Memory MCP
An MCP server providing persistent memory storage for AI agents, allowing them to save, read, list, and delete JSON values across sessions. It uses a pay-per-use model via x402 on Base, requiring no account or API key, with the paying wallet serving as the private namespace for data isolation.
Package and access
Local package with source-attributed installation metadata. Koskamo does not execute packages during review.
No account, no API key: each call is paid in USDC on Base via x402
Vendor documentation What you can do with it
- Store JSON values under specific keys for agent state persistence
- Read stored values back from persistent memory
- List all keys in the agent's persistent memory namespace
- Export entire memory as a signed JSON document for integrity verification
Source and maintenance
Community listingRegistry 1.1.0
- Maintenance checked
Packages and installation
Source-provided package data. Koskamo has not executed or live-probed this package.
https://github.com/Tifdt/port402-memory-mcp/releases/download/v1.1.0/port402-memory.mcpb
mcpbSHA-256 supplied
https://github.com/Tifdt/port402-memory-mcp/releases/download/v1.1.0/port402-memory.mcpb package definition
{
"transport": "stdio",
"fileSha256": "073faef8a922cd8789ea8e0ea9d162b0957491ad64a8509739983cdceedca18e",
"identifier": "https://github.com/Tifdt/port402-memory-mcp/releases/download/v1.1.0/port402-memory.mcpb",
"registryType": "mcpb",
"environmentVariables": [
{
"name": "PORT402_PRIVATE_KEY",
"format": "string",
"isRequired": true,
"description": "Private key of a dedicated Base wallet holding a few USDC. It pays each call and is your private memory namespace."
},
{
"name": "PORT402_MAX_USD_PER_CALL",
"format": "string",
"description": "Spending cap per call in USD (default 0.01)."
}
]
}Tools
Reported by the attributed source; not independently observed by Koskamo.
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