Agent Relay — Cross-Agent Context Sharing

Lightweight file-based coordination for multi-agent OpenClaw setups.

Problem

Agents run independently — Reddit doesn't know what Moltbook found, News doesn't know what's trending on HN. Each agent is an island.

Solution

Shared JSON files that agents write to and read from. No config changes needed — just files on disk.

Setup

# Create shared directory in workspace
mkdir -p ~/.openclaw/workspace/shared

# Script location
~/.openclaw/workspace/scripts/shared-context.py

Usage

Agent writes after finishing work:

# Reddit agent logs trending topic
python3 scripts/shared-context.py add-trend \
  --source reddit --topic "self-hosting mini PCs" --score 1500

# News agent logs highlight
python3 scripts/shared-context.py add-highlight \
  --source news --title "Unsloth Studio launched" \
  --summary "Open-source LLM training UI, 2x faster"

Agent reads before acting:

# Moltbook agent checks what's trending before posting
python3 scripts/shared-context.py get-trends --limit 5

# Any agent checks recent highlights
python3 scripts/shared-context.py get-highlights --limit 5

Cleanup (brain-maintenance cron):

# Remove entries older than 48 hours
python3 scripts/shared-context.py cleanup --hours 48

Integration into cron prompts

Add to any agent's cron prompt:

Before posting/engaging, check shared context:
exec('python3 /path/to/scripts/shared-context.py get-trends --limit 3')
→ If a trend is relevant to this platform, create content about it.

After finishing, log what you found:
exec('python3 /path/to/scripts/shared-context.py add-trend --source <agent> --topic "<finding>" --score <relevance>')

Files

Architecture

Reddit ──write──→ shared/trends.json ←──read── Moltbook
News   ──write──→ shared/highlights.json ←──read── Clawstr
                        ↑
              brain-maintenance (cleanup)

No database. No message queue. Just JSON files on disk. Works because all agents run on the same machine.