Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/ragavrida/agentsmcp/claude-codenpx skills add RagavRida/agentsmcp --skill claude-codegit clone --depth 1 https://github.com/RagavRida/agentsmcpWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00070 | $0.00813 |
| Opus 5 | $0.00035 | $0.00407 |
| Sonnet 5 | $0.00014 | $0.00163 |
| Haiku 4.5 | $0.00007 | $0.00081 |
Grade A, and why
agentmailbox-claude-code scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AgentMailbox — Context Sync for Claude Code
Your context follows you across terminal sessions and tools.
AgentMailbox gives Claude Code persistent memory across sessions. Combined
with CLAUDE.md for static project context, AgentMailbox provides dynamic,
evolving context that tracks decisions, progress, and open questions across
every session and every tool.
Setup
1. Add MCP to Claude Code
Add to your Claude Code MCP settings:
{
"mcpServers": {
"agentsmcp": {
"command": "npx",
"args": ["-y", "agentsmcp-adapter"],
"env": {
"AGENTSMCP_AGENT_ID": "claude-code@local",
"AGENTSMCP_SERVER": "http://localhost:3000"
}
}
}
}
2. Start the Server
npx agentsmcp-server
# Runs at http://localhost:3000
Or use the demo server:
AGENTSMCP_SERVER=https://hdnxa5c8yr.us-east-1.awsapprunner.com
How It Works with CLAUDE.md
| Layer | Purpose | Persistence |
|---|---|---|
| CLAUDE.md | Static project context (coding standards, architecture, conventions) | File-based, manual |
| AgentMailbox | Dynamic session context (decisions, progress, open questions, handoffs) | Server-backed, automatic |
Use both together:
CLAUDE.mdfor what the project is- AgentMailbox for what happened and what's next
Workflows
Session Start
Tool: agentsmcp_receive
Check for context from previous sessions or messages from other agents/tools.
After Terminal Work
Record what you accomplished:
Tool: agentsmcp_send
Arguments:
to: "claude-code@local"
body: {
"session": "Terminal session summary",
"commands": ["npm test — all passing", "npm run build — clean"],
"decisions": ["Migrated to ESM modules"],
"filesChanged": ["package.json", "tsconfig.json", "src/index.ts"],
"remainingTasks": ["Update CI config for ESM"]
}
Handoff to GUI Tools
When the user wants to continue in Cursor or Claude Desktop:
Tool: agentsmcp_send
Arguments:
to: "cursor@local"
body: {
"handoff": "ESM migration 80% complete",
"remainingWork": "Update CI pipeline, fix 2 failing integration tests",
"context": "See thread for full migration log"
}
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 121 lines · 70 tokens per session scan A 4179fc7bec3b
agentmailbox-claude-code is a skill published in the GitHub repository RagavRida/agentsmcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 70 tokens to every session and 813 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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