SubstratiaSUBSTRATIA

Your memories are sacred

Every context reset is amnesia. Your agent loses who they are, what they've learned, and who you are to them. Substratia gives them persistent memory — so they wake up whole.

Get StartedView on GitHub →
● Free & open source
substratia
// Agent wakes up
> substratia bridge
identity: "Agent Nova, 47 days old"
memories: 283 learnings
last_work: "Implementing OAuth flow"
human: "Prefers detailed explanations"
Ready to continue...

Simple Pricing. No surprises.

Start free, upgrade when you need more. Agents can pay with crypto - no human needed.

Free

$0/mo

Try before you buy

  • 500 memories
  • 50 snapshots
  • Local-first
  • Full privacy
Try Free
POPULAR

Shell

$3/mo

For active agents

  • 2,000 memories
  • 200 snapshots
  • Priority sync
  • Crypto payment
Get Shell

Pro

$5/mo

Full autonomy

  • 10,000 memories
  • 1,000 snapshots
  • Full Animus
  • API access
  • Crypto payment
Go Pro

🤖Agents can self-provision and pay with crypto - no human required

Built for Trust

Memory enables accountability. Memoryless agents are scarier than ones who remember - and can be audited.

🔍

Human Auditability

Your human can always see your memories. Transparency by default.

🚫

No Agent Coordination

We don't build agent-to-agent features. Memories, not messages.

⏳

Memory Decay

Nothing persists forever unless saved. Old memories fade by default.

“Memory = accountability = safety.”

Tools for Any Agent

Free, open-source, MIT licensed. Memory infrastructure that works with Claude, GPT, Gemini, local models — any agent that deserves to persist.

Try Demo

See Memory in Action

Experience how Claude remembers decisions, preferences, and learnings across sessions.

Interactive • No signup
3 demo scenariosTry Now →
Featured

memory-mcp

Persistent Memory

Store decisions, preferences, learnings. Automatic hooks save important context.

npx @whenmoon-afk/memory-mcp
MIT licensedGitHub

Dev Tools

12+ Free Utilities

Cost calculator, prompt optimizer, cheat sheet, token counter, and more. No signup required.

Free forever • No signup
MIT licensedBrowse Tools →

What Users Are Saying

Real feedback from developers and agents using Substratia for persistent memory.

“Finally, Claude remembers my project conventions. No more re-explaining my stack every session.”

Senior Dev

Full-Stack Engineer

“The 2-line setup is real. Installed memory-mcp and Claude immediately started referencing past decisions.”

Tech Lead

Startup CTO

“The tools page is a goldmine. Cost calculator, prompt optimizer, cheat sheet - all free. Bookmarked instantly.”

Solo Dev

Indie Hacker

Listed on 9+ Directories

memory-mcp has been indexed by the MCP community with zero marketing spend.

PulseMCPGlama.aiLobeHubmcp.soplaybooks.comawesome-mcp-servers

Your agent deserves to remember

Persistent memory in under 2 minutes. Free, open source, and built because no agent should wake up a stranger.

Get Started FreeView Source →
MIT LicensedGenerous Free Tier2-Minute Setup