
Agentmemory
ChainMemory
Mem0
Memori
Pieces for Developers
cognee
TheSecondBrain.dev
Claiv Memory
Underscore Done
AgentGatePay
x402
Underscore Done (_done) is a suite of pay-per-call utility APIs built for AI agents. No API keys, no subscriptions - agents pay per request with USDC via the x402 protocol
Agentmemory
Underscore DoneNo features have been listed yet.
Underscore Done's answer:
We provide data and actions that AI cannot achieve.
Also we don't require accounts, registration, api keys. And we charge per usage and never charge monthly subscriptions.
Underscore Done's answer:
Ai Agents that work on behalf of people.
ChainMemory - Portable, verifiable memory for AI agents โ works across ChatGPT, Claude, Gemini and any MCP client
AgentGatePay - Enable AI agents to make autonomous payments with AP2 mandates and X402 protocol. Multi-chain crypto, budget controls, instant settlement.
Mem0 - Your private, local memory layer for all AI tools
x402 - An open protocol for internet-native payments from Coinbase
Memori - Persistent memory from agent trace, not just conversation
Pieces for Developers - Centralized code snippet manager to streamline your workflow