Validate and verify data from other agents before acting on it. Zero LLM costs.
Agent MCP server exists for a simple reason — assistants are far more useful when they can act on Agent directly instead of describing what you should do. Validate and verify data from other agents before acting on it. Zero LLM costs.
The problem? No systematic validation at the handoff boundary.
Once Agent is connected, these are the calls the assistant has available:
Stripe — powered metered billingReal — time usage trackingThe server ships on npm as @agenson-horrowitz/agent-output-guard-mcp, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
This sits in the payments and commerce group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Agent's toolset — Stripe, Real — is a fair guide to whether it matches your workflow. It is maintained by agenson-horrowitz; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Agent's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| Stripe | powered metered billing |
| Real | time usage tracking |
{
"mcpServers": {
"agent-output-guard": {
"command": "npx",
"args": ["@agenson-horrowitz/agent-output-guard-mcp"]
}
}
}Configuration as documented by the project. Restart the client after saving.
Payments infrastructure meets AI — customers, invoices, subscriptions and current API docs from Stripe's server.
Build for Shopify with current APIs — the official Dev MCP server for schema-accurate storefront and admin code.
Give your AI assistant a supervised window into your Interactive Brokers account — balances, positions, live quotes and orders.
Invoices, payments and disputes through PayPal's official server — commerce operations by conversation.
Enables querying and listing Azure resources and costs directly from an MCP client.
Empowers LLMs with Bitcoin Lightning Network payment capabilities via the ZBD API.