| name | agent-memory-bridge |
| description | Bidirectional sync between Hermes memory and Codex auto-memory, with licensed machine bootstrap. Use when context parity across agents is needed. |
| version | 1.0.0 |
| author | Hermes Agent |
| license | MIT |
| metadata | {"hermes":{"tags":["memory-bridge","cross-agent","context-parity","Codex"],"related_skills":["licensed-machine-prompt-orchestration","overnight-parallel-agent-prompts"]}} |
Agent Memory Bridge
When corrections, context, or patterns learned in one agent (Hermes, Codex, Codex) need to propagate to all others.
When to use
- User says something like "remember this" or gives a correction in Hermes that should apply to Codex
- You discover a workspace convention or pattern that other agents on other machines need
- Setting up a new machine to match existing agent context
- After an adversarial review reveals one agent knew something another didn't
Locations
| System | Memory location | Type |
|---|
| Hermes | Hermit memory tool (injected into every turn) | Compact, ~2153 chars, curated |
| Codex (Linux) | ~/.Codex/projects/<path-hash>/memory/*.md | Auto-accumulated, ~40 files |
| Codex (global) | ~/.Codex/AGENTS.md | Manual, all-sessions baseline |
| Codex (Windows) | C:\Users\<user>\.Codex\projects\ | Empty until bootstrapped |
| Codex | Session-only (no persistent memory) | Must re-inject via prompt |
| Gemini | Session-only (no persistent memory) | Must re-inject via prompt |
Skill Accessibility Across All Agents
Each agent accesses skills differently. A skill in .Codex/skills/ must also be
visible through each agent's mechanism. This was verified in #1949 (Codex symlink fix).
| Agent | Skill Source | Count (workspace-hub) | Verification Command |
|---|
| Codex | .Codex/skills/ (native) | 696 | find -L .Codex/skills -name SKILL.md -not -path '*/_archive/*' | wc -l |
| Hermes | ~/.hermes/config.yaml → external_dirs (6 repos) | 974 total | Python: check external_dirs paths exist and contain SKILL.md files |
| Codex | .codex/skills/ → symlink to ../.Codex/skills/ | 696 | find -L .codex/skills -name SKILL.md -not -path '*/_archive/*' | wc -l |
| Gemini | .gemini/skills/ → symlink to ../.Codex/skills/ | 696 | find -L .gemini/skills -name SKILL.md -not -path '*/_archive/*' | wc -l |
CRITICAL VERIFICATION: Run this after any skill changes to confirm all agents can see skills:
echo "=== Agent Skill Accessibility ==="
echo "CC: $(find -L .Codex/skills -name 'SKILL.md' -not -path '*/_archive/*' | wc -l)"
echo "Codex: $(find -L .codex/skills -name 'SKILL.md' -not -path '*/_archive/*' | wc -l)"
echo "Gemini: $(find -L .gemini/skills -name 'SKILL.md' -not -path '*/_archive/*' | wc -l)"
Key Pitfall: .codex/skills/ should be a symlink to ../.Codex/skills/ but was
accidentally a real directory with only 57 GSD skills (out of 696+). Always verify
it's a symlink: ls -la .codex/skills should show -> ../.Codex/skills, not a directory.
Sub-repo Behavior: When working in sub-repos (CAD-DEVELOPMENTS/, digitalmodel/, etc.),
each agent sees that repo's local .Codex/skills/ (31-261 skills) PLUS the workspace-hub
skills (696) depending on working directory context. See #1951 for sub-repo skill visibility gap.
Bridging Hermes → Codex
- Hermes memory is always available in the system context — extract the consolidated facts
- Write to
~/.Codex/AGENTS.md (global) or ~/.Codex/projects/<hash>/memory/ (project-scoped)
- The GLOBAL AGENTS.md is the single source of truth — write conventions, paths, user preferences, corrections
- Project-scoped memory is for organic learnings accumulated over sessions
Bridging Codex → Hermes
- Read
~/.Codex/projects/*/memory/*.md — these are Codex's learned corrections and context
- Feed into
delegate_task context for subagents
- Use
memory tool to store critical corrections in Hermes memory (curate — Hermes memory is limited to 2200 chars)
Bridging to Licensed Machines (Windows)
- Export unified memory files to a tarball or git-tracked directory
- Copy to Windows machine
- Bootstrap with
.Codex/AGENTS.md at project level
- Use
python not uv run on Windows
Key Principles
- Compact source of truth: One global AGENTS.md that any agent can load
- Curate aggressively: Codex's auto-memory grows organically and has duplicate/cross-cutting entries. Deduplicate before bridging.
- Git-track everything: Put the bridge scripts and export files in the repo so they survive machine loss
- No agent loses context: If Codex's OAuth session dies and starts fresh, it should still have the same baseline knowledge via AGENTS.md
Pitfalls
- Codex's auto-memory directory is at
~/.Codex/projects/-<path>-hash/memory/ — the directory name is URL-encoded path with dashes, not a UUID
- Codex's auto-memory has a 25KB/200-line limit per project
- Multiple project directories exist in parallel (workspace-hub, digitalmodel, worldenergydata) — bridge ALL of them
- Windows path separators differ — test the bootstrap script on the target machine
