MCP Servers

A node.js api-gateway that forwards calls to a backend set of tools. Mind that the tools are called via a http call as well and not via a path on the server. This makes the whole grid more scalable Why the api-gateway? things can be done like inspection of the request and abstraction of the logic etc. a json webtoken is needed to execute the request. for this test/demo to work: generate a jwt just call 'gentoken userid role' so: gentoken agent agent for a jw token for use agent in the role agent, or gentoken user-1 for a token for user-1 in the role agent (and ommitting both results in a token. for user limited-agent in the role agent) Currently no checking is performed when an API is called on our side / site against the webtoken Of course in real life the token is generated via authentication and the appropriate role(s) is / are then connected to the jwt (APIs checking the token against their logic)

the server runs on port 8443 with an self-signed certificate

start using: node server.js & get the proces: ps aux | grep node kill process: kill

to start the api that gives access to the tools: (python project)

uvicorn app:app --host 0.0.0.0 --port 8080 &

to test the python backend, run from a shell

curl -X POST http://macboobies.local:8080/mcp/tools/invoke -H "Content-Type: application/json" -d '{ "tool": "get_weather", "args": { "location": "Amsterdam" } }'

if that works then the python backend works fine

store a temporary token by calling from the shell:

gentoken (gentoken is registered as an alias to alias: gentoken="node ~/gateway/generate-token.js")

this will generate a token for the user limited-agent in the role agent

to run the tools via the api-gateway, call the following from a shell:

curl -k -X POST https://localhost:8443/tool/weather -H "Authorization: Bearer $JWT_TOKEN" -H "Content-Type: application/json" -d '{"city": "Amsterdam"}'

the tool-call is then rerouted to the correct address and then executed

TL;DR

node server.js & uvicorn app:app --host 0.0.0.0 --port 8080 &

gentoken

curl -X POST http://macboobies.local:8080/mcp/tools/invoke -H "Content-Type: application/json" -d '{ "tool": "get_weather", "args": { "location": "Amsterdam" } }'

curl -v -k -X POST http://macboobies.local:8181/tool/weather -H "Authorization: Bearer $JWT_TOKEN" -H "Content-Type: application/json" -d '{"location": "Amsterdam"}'

curl -v -k -X POST https://macboobies.local:8443/tool/weather -H "Authorization: Bearer $JWT_TOKEN" -H "Content-Type: application/json" -d '{"location": "Amsterdam"}'

curl -X POST http://macboobies.local:8080/ -H "Authorization: Bearer $JWT_TOKEN" -H "Content-Type: application/json" -d '{"location": "Berlin"}'

curl -v -k -X POST https://api.birdkokane.com/tool/weather -H "Authorization: Bearer $JWT_TOKEN" -H "Content-Type: application/json" -d '{"location": "Amsterdam"}'