HOST

Java

HttpClient-Transport. Spring Boot ist Controller und Thymeleaf. Das SDK braucht Spring nicht.

Java

HttpClient-Transport. Spring Boot ist Controller und Thymeleaf. Das SDK braucht Spring nicht.

ai.sveda:sveda-java-sdk mintet Embed-Tokens. POST /sveda/session in Spring Boot oder SvedaClient.startHostSession.

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Copy this into Cursor, Claude Code, or any coding agent. It installs Sveda against this stack using public packages.

Install Sveda into this Java project.

Read:
- https://sveda.dev/docs/hosts/java
- https://sveda.dev/docs/client
- https://sveda.dev/docs/deploy
- https://sveda.dev/llms.txt

Follow the numbered steps on the Java page. If unsure which frontend this repo uses, ask the user.

1. Run sveda-server

# ghcr.io/neresson/sveda-server:latest
# curl -fsSL https://raw.githubusercontent.com/neresson/sveda/main/deploy/compose.yaml -o compose.yaml && curl -fsSL https://raw.githubusercontent.com/neresson/sveda/main/deploy/compose.env -o .env && # Edit .env: a model key, SVEDA_EMBED_HOST_API_KEY, SVEDA_CORS_ORIGINS &&  && docker compose up -d && curl -s http://127.0.0.1:8787/sveda/ready

services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: sveda
      POSTGRES_PASSWORD: sveda
      POSTGRES_DB: sveda
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U sveda -d sveda"]
      interval: 5s
      timeout: 3s
      retries: 10
    volumes:
      - sveda-postgres:/var/lib/postgresql/data
  redis:
    image: redis:7-alpine
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 3s
      retries: 10
  sveda-server:
    image: ghcr.io/neresson/sveda-server:latest
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    ports:
      - "8787:8787"
    environment:
      SVEDA_BIND: 0.0.0.0:8787
      SVEDA_EMBED_ENABLED: "true"
      SVEDA_DATABASE_URL: postgres://sveda:sveda@postgres:5432/sveda
      SVEDA_REDIS_URL: redis://redis:6379
      SVEDA_APP_KEY: ${SVEDA_APP_KEY:-dev-app-key-change-me}
      SVEDA_ADMIN_API_KEY: ${SVEDA_ADMIN_API_KEY:-dev-admin-key-change-me}
      SVEDA_EMBED_HOST_API_KEY: ${SVEDA_EMBED_HOST_API_KEY:-dev-host-key-change-me}
      SVEDA_CORS_ORIGINS: ${SVEDA_CORS_ORIGINS:-*}
      DEEPSEEK_API_KEY: ${DEEPSEEK_API_KEY:-}
volumes:
  sveda-postgres:

# ghcr.io/neresson/sveda-server:latest
# curl -fsSL https://raw.githubusercontent.com/neresson/sveda/main/deploy/compose.yaml -o compose.yaml && curl -fsSL https://raw.githubusercontent.com/neresson/sveda/main/deploy/compose.env -o .env && # Edit .env: a model key, SVEDA_EMBED_HOST_API_KEY, SVEDA_CORS_ORIGINS &&  && docker compose up -d && curl -s http://127.0.0.1:8787/sveda/ready

services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: sveda
      POSTGRES_PASSWORD: sveda
      POSTGRES_DB: sveda
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U sveda -d sveda"]
      interval: 5s
      timeout: 3s
      retries: 10
    volumes:
      - sveda-postgres:/var/lib/postgresql/data
  redis:
    image: redis:7-alpine
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 3s
      retries: 10
  sveda-server:
    image: ghcr.io/neresson/sveda-server:latest
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    ports:
      - "8787:8787"
    environment:
      SVEDA_BIND: 0.0.0.0:8787
      SVEDA_EMBED_ENABLED: "true"
      SVEDA_DATABASE_URL: postgres://sveda:sveda@postgres:5432/sveda
      SVEDA_REDIS_URL: redis://redis:6379
      SVEDA_APP_KEY: ${SVEDA_APP_KEY:-dev-app-key-change-me}
      SVEDA_ADMIN_API_KEY: ${SVEDA_ADMIN_API_KEY:-dev-admin-key-change-me}
      SVEDA_EMBED_HOST_API_KEY: ${SVEDA_EMBED_HOST_API_KEY:-dev-host-key-change-me}
      SVEDA_CORS_ORIGINS: ${SVEDA_CORS_ORIGINS:-*}
      DEEPSEEK_API_KEY: ${DEEPSEEK_API_KEY:-}
volumes:
  sveda-postgres:

2. Install ai.sveda:sveda-java-sdk

Java 17. Maven Central: ai.sveda:sveda-java-sdk. The SDK uses java.net.http.HttpClient — Spring is optional.

<dependency>
  <groupId>ai.sveda</groupId>
  <artifactId>sveda-java-sdk</artifactId>
  <version>0.1.0</version>
</dependency>

<dependency>
  <groupId>ai.sveda</groupId>
  <artifactId>sveda-java-sdk</artifactId>
  <version>0.1.0</version>
</dependency>

3. Env

Spring binds sveda.client.base-url=${SVEDA_CLIENT_BASE_URL:}. Plain Java reads the same variables.

SVEDA_CLIENT_BASE_URL=http://127.0.0.1:8787
SVEDA_CLIENT_HOST_API_KEY=replace-me

SVEDA_CLIENT_BASE_URL=http://127.0.0.1:8787
SVEDA_CLIENT_HOST_API_KEY=replace-me

4. Plain Java

Map the signed-in user to a named policy on mint when you need capability limits — embed policies.

SvedaClient client = SvedaClient.builder()
    .baseUrl(origin)
    .hostApiKey(hostApiKey)
    .build();
HostSession session = SvedaClient.startHostSession(client, "java-host");

SvedaClient client = SvedaClient.builder()
    .baseUrl(origin)
    .hostApiKey(hostApiKey)
    .build();
HostSession session = SvedaClient.startHostSession(client, "java-host");

5. Spring Boot

Map POST /sveda/session. Thymeleaf th:if="${svedaEnabled}" on buttons and the host script. Serve sveda-host.js from src/main/resources/static.

@PostMapping("/sveda/session")
public ResponseEntity<?> session() {
    if (!properties.isConfigured()) {
        return ResponseEntity.status(HttpStatus.SERVICE_UNAVAILABLE)
            .body(Map.of("message", "Set SVEDA_CLIENT_BASE_URL and SVEDA_CLIENT_HOST_API_KEY"));
    }
    SvedaClient client = SvedaClient.builder()
        .baseUrl(properties.origin())
        .hostApiKey(properties.hostApiKey())
        .build();
    return ResponseEntity.ok(SvedaClient.startHostSession(client, "spring-playground"));
}

@PostMapping("/sveda/session")
public ResponseEntity<?> session() {
    if (!properties.isConfigured()) {
        return ResponseEntity.status(HttpStatus.SERVICE_UNAVAILABLE)
            .body(Map.of("message", "Set SVEDA_CLIENT_BASE_URL and SVEDA_CLIENT_HOST_API_KEY"));
    }
    SvedaClient client = SvedaClient.builder()
        .baseUrl(properties.origin())
        .hostApiKey(properties.hostApiKey())
        .build();
    return ResponseEntity.ok(SvedaClient.startHostSession(client, "spring-playground"));
}

6. Page markup

<html
  lang="en"
  data-sveda-origin="http://127.0.0.1:8787"
  data-sveda-session="/sveda/session"
>
  <body>
    <button type="button" data-sveda-open="js">Open JS chat</button>
    <button type="button" data-sveda-open="iframe">Open iframe chat</button>
    <script type="module" src="/sveda-host.js"></script>
  </body>
</html>

<html
  lang="en"
  data-sveda-origin="http://127.0.0.1:8787"
  data-sveda-session="/sveda/session"
>
  <body>
    <button type="button" data-sveda-open="js">Open JS chat</button>
    <button type="button" data-sveda-open="iframe">Open iframe chat</button>
    <script type="module" src="/sveda-host.js"></script>
  </body>
</html>

Host SDKs

Every language, same handshake.

Embed token

POST /sveda/embed/token, policies, capabilities.

Appearance

Host JS wins; sveda.yaml if omitted.

No framework

HTML, iframe, tiny HTTP.

Product: host SDKs

Why minting stays on the server.

Java

Java

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1. Run sveda-server

2. Install ai.sveda:sveda-java-sdk

3. Env

4. Plain Java

5. Spring Boot

6. Page markup

Related

Mint from the host.