agent command center
Turn any API into a governed, monetizable MCP endpoint.
Bouncer sits between your AI and the outside world. Turn any OpenAPI API into a governed MCP endpoint, proxy existing agents, and enforce allow/deny rules, rate limits and spend caps — without touching the agent itself.
free · no account needed · vet any npm package or MCP server before your agent touches it
security check
Nobody reads what their agent installs. We do.
Before an npm package or an MCP server touches your machine or your agent, run the npm package security check and MCP security scanner on it: install scripts, credential access, obfuscated code and hidden tool descriptions — with a verdict you can read and a config pinned to the safe version.
$ npx -y some-hot-mcp
Turned away — 3 tool descriptions hide invisible characters
Needs a look — axios 1.20.0: runs a ‘prepare’ script on install
On the list — left-pad 1.3.0: nothing risky in it
Install scripts read as text, never executed · MCP tool lists fingerprinted
bouncer is not an llm gateway
We don't route prompts to models. We govern what your agents can touch.
LLM routers & gateways
- Send your prompt to GPT, Claude or Llama
- Pick the cheapest or fastest model
- Count tokens and cache completions
Bouncer
- Sits between your agent and its tools, APIs and MCP servers
- Vets packages and MCP servers before they're installed
- Enforces allow/deny lists, rate limits and spend caps on every call
Use Bouncer alongside whatever model router you already have — they answer to you, your agents answer to Bouncer.
OpenAPI → MCP in one click
Paste a Swagger or OpenAPI URL and Bouncer generates MCP tools, serves them over Streamable HTTP, and gives you a drop-in WebMCP snippet.
One proxy URL
Register an agent, MCP endpoint or generated API bridge and hand out a gateway URL instead of the real one.
Allow & deny lists
Whitelist the tools you trust, blacklist the rest. Wildcards supported, default-deny optional.
Keys, limits & caps
Issue scoped keys with per-minute rate limits, daily quotas and hard spend caps.
Every call logged
Tool name, decision, latency, status and tokens — for each request that passes through.
WebMCP ready
Copy a ready-to-paste WebMCP snippet from any agent so browser-based AI clients can call your governed tools directly.