Hermes Agent + MemorySync

Overview

Select MemorySync as Hermes Agent’s memory provider and Nous Research’s self-improving agent remembers you across every session. The provider implements Hermes’ full MemoryProvider lifecycle: a short system-prompt block naming the active identity and the memory tools, background recall prefetched between turns and injected with zero added latency, your message from each turn queued on a bounded daemon worker for fact extraction with cross-adapter fnv1a64 idempotency seeds (only the durable facts are stored; assistant replies are not), mirroring of built-in MEMORY.md/USER.md writes, the delegated task of each subagent run sent to fact extraction (the subagent’s result is not), and correct rescoping across /resume, /branch, /reset and compression. The only provider in the ecosystem with zero pip dependencies — pure Python standard library, so installing it can never disturb the Hermes runtime. Cron, subagent and flush contexts are fully passive: background prompts can never corrupt a user’s profile.

Setup status and requirements

Supported version

memorysync-hermes 1.1.0

Last setup review

2026-08-24

Permissions

A MemorySync API key with read and write scopes.

Limits

Selecting MemorySync in hermes memory setup makes it the active memory provider; Hermes’ built-in MEMORY.md/USER.md writes keep working and are mirrored to MemorySync. Node.js 18+ for the installer; the provider itself is pure Python stdlib.

Capabilities

• Installer to $HERMES_HOME/plugins in one command: npx -y memorysync-hermes install
• hermes memory setup wizard integration — schema-driven, secrets to .env only
• Zero-latency prefetched recall with the deterministic 🧠 recall indicator
• Non-blocking fact capture from your messages — fnv1a64 seeds, so a replay is extracted once
• Built-in memory writes mirrored; delegated tasks sent to fact extraction
• Cron/subagent/flush contexts fully passive, by test
• Circuit breaker + budgeted calls: nothing ever raises into Hermes
• Zero pip dependencies — pure standard library

Quick Start

npx -y memorysync-hermes install
hermes memory setup     # select "memorysync"
hermes memory status    # confirm it is active

Use Cases

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