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MCP OAuth2 Demo

Ovaj projekt je minimalna Spring Boot aplikacija koja djeluje kao:

  • Spring Authorization Server (izdaje JWT pristupne tokene putem client_credentials toka), i
  • Resource Server (štiti vlastiti /hello endpoint).

Ona prati postavke prikazane u Spring blog postu (2. travnja 2025.).

Brzi početak (lokalno)

# build & run
./mvnw spring-boot:run

# obtain a token
curl -u mcp-client:secret -d grant_type=client_credentials \
     http://localhost:8081/oauth2/token | jq -r .access_token > token.txt

# call the protected endpoint
curl -H "Authorization: Bearer $(cat token.txt)" http://localhost:8081/hello

Testiranje OAuth2 konfiguracije

OAuth2 sigurnosnu konfiguraciju možete testirati sljedećim koracima:

1. Provjerite je li server pokrenut i zaštićen

# This should return 401 Unauthorized, confirming OAuth2 security is active
curl -v http://localhost:8081/

2. Dohvatite pristupni token koristeći client credentials

# Get and extract the full token response
curl -v -X POST http://localhost:8081/oauth2/token \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -H "Authorization: Basic bWNwLWNsaWVudDpzZWNyZXQ=" \
  -d "grant_type=client_credentials&scope=mcp.access"

# Or to extract just the token (requires jq)
curl -s -X POST http://localhost:8081/oauth2/token \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -H "Authorization: Basic bWNwLWNsaWVudDpzZWNyZXQ=" \
  -d "grant_type=client_credentials&scope=mcp.access" | jq -r .access_token > token.txt

Napomena: Basic Authentication header (bWNwLWNsaWVudDpzZWNyZXQ=) is the Base64 encoding of mcp-client:secret.

3. Pristupite zaštićenom endpointu koristeći token

# Using the saved token
curl -H "Authorization: Bearer $(cat token.txt)" http://localhost:8081/hello

# Or directly with the token value
curl -H "Authorization: Bearer eyJra...token_value...xyz" http://localhost:8081/hello

Uspješan odgovor s "Hello from MCP OAuth2 Demo!" potvrđuje da OAuth2 konfiguracija radi ispravno.

Izgradnja containera

docker build -t mcp-oauth2-demo .
docker run -p 8081:8081 mcp-oauth2-demo

Deploy na Azure Container Apps

az containerapp up -n mcp-oauth2 \
  -g demo-rg -l westeurope \
  --image <your-registry>/mcp-oauth2-demo:latest \
  --ingress external --target-port 8081

Ingress FQDN postaje vaš issuer (https://<fqdn>).
Azure provides a trusted TLS certificate automatically for *.azurecontainerapps.io.

Povezivanje s Azure API Management

Dodajte ovu inbound politiku svojem API-ju:

<inbound>
  <validate-jwt header-name="Authorization">
    <openid-config url="https://<fqdn>/.well-known/openid-configuration"/>
    <audiences>
      <audience>mcp-client</audience>
    </audiences>
  </validate-jwt>
  <base/>
</inbound>

APIM će dohvatiti JWKS i validirati svaki zahtjev.

Što slijedi

Odricanje od odgovornosti:
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