# EMC Java SDK

emc\_java\_sdk is a lightweight Java library for integrating with clients (nodes) on the edge-matrix network:

This allows you to work with the [EdgeMatrix](https://www.edgematrix.pro/) Decentralized Computing Network, without the additional overhead of having to write your own integration code for the platform.

### QuickStart

The simplest way to start your journey with emc\_java\_sdk is to create a project.

**Please head to the** [**EdgeMatrix**](https://www.edgematrix.pro/) **for further instructions on using emc Java SDK.**

### Maven

**Depoly jar to your local maven repository**

$ mvn install:install-file -Dfile=/local/path/edge-matrix-sdk-java-1.1-SNAPSHOT.jar -DgroupId=pro.edge-matrix -DartifactId=edge-matrix-sdk-java -Dversion=1.1-SNAPSHOT -Dpackaging=jar

```
<dependency>
    <groupId>pro.edge-matrix</groupId>
    <artifactId>edge-matrix-sdk-java</artifactId>
    <version>1.1-SNAPSHOT</version>
    <scope>provided</scope>
</dependency>
```

```
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter</artifactId>
    <version>5.5.2</version>
    <scope>test</scope>
</dependency>
```

```
<dependency>
    <groupId>org.web3j</groupId>
    <artifactId>core</artifactId>
    <version>4.9.7</version>
</dependency>
```

### Sample code

```
public class YourEdgeCaller {
    private static EdgeWeb3j web3j = EdgeWeb3j.build(new HttpService("https://oregon.edgematrix.xyz"));

    // A edge-matrix node that is running Stable Diffusion service for testing purpose.
    private static String TEST_PEERID = "16Uiu2HAm14xAsnJHDqnQNQ2Qqo1SapdRk9j8mBKY6mghVDP9B9u5";

    public void sendRtcMessage() {
        EdgeService edgeService = new EdgeService();
        String s = edgeService.sendRtcMsg(
                web3j,
                ChainId.TEST_NET.getId(),
                SampleKeys.CREDENTIALS,
                RtcMsg.createRtcMsg(
                        "0x8eeb338239ada22d81ffb7adc995fe31a4d1dc2d701bc8a58fffe5b53e14281e",
                        "edge_chat",
                        "hello",
                        new Address("0x0").toString()));
        System.out.println(s);
    }

    public void callStableDeffusionEdgeApi() {
        EdgeService edgeService = new EdgeService();
        String peerId = TEST_PEERID;
        String apiHttpMethod = "POST";
        String apiPath = "/sdapi/v1/txt2img";
        String apiData = "{\n" +
                "      \"enable_hr\": false,\n" +
                "      \"denoising_strength\": 0,\n" +
                "      \"firstphase_width\": 0,\n" +
                "      \"firstphase_height\": 0,\n" +
                "      \"hr_scale\": 2,\n" +
                "      \"hr_upscaler\": \"\",\n" +
                "      \"hr_second_pass_steps\": 0,\n" +
                "      \"hr_resize_x\": 0,\n" +
                "      \"hr_resize_y\": 0,\n" +
                "      \"prompt\": \"white cat and dog\",\n" +
                "      \"styles\": [\n" +
                "        \"\"\n" +
                "      ],\n" +
                "      \"seed\": -1,\n" +
                "      \"subseed\": -1,\n" +
                "      \"subseed_strength\": 0,\n" +
                "      \"seed_resize_from_h\": -1,\n" +
                "      \"seed_resize_from_w\": -1,\n" +
                "      \"sampler_name\": \"\",\n" +
                "      \"batch_size\": 1,\n" +
                "      \"n_iter\": 1,\n" +
                "      \"steps\": 50,\n" +
                "      \"cfg_scale\": 7,\n" +
                "      \"width\": 512,\n" +
                "      \"height\": 512,\n" +
                "      \"restore_faces\": false,\n" +
                "      \"tiling\": false,\n" +
                "      \"do_not_save_samples\": false,\n" +
                "      \"do_not_save_grid\": false,\n" +
                "      \"negative_prompt\": \"\",\n" +
                "      \"eta\": 0,\n" +
                "      \"s_churn\": 0,\n" +
                "      \"s_tmax\": 0,\n" +
                "      \"s_tmin\": 0,\n" +
                "      \"s_noise\": 1,\n" +
                "      \"override_settings\": {},\n" +
                "      \"override_settings_restore_afterwards\": true,\n" +
                "      \"script_args\": [],\n" +
                "      \"sampler_index\": \"Euler\",\n" +
                "      \"script_name\": \"\",\n" +
                "      \"send_images\": true,\n" +
                "      \"save_images\": false,\n" +
                "      \"alwayson_scripts\": {}\n" +
                "    }";
        String s = edgeService.callEdgeApi(
                web3j,
                ChainId.TEST_NET.getId(),
                edgeService.getNextTelegramNonce(web3j, SampleKeys.ADDRESS),
                SampleKeys.CREDENTIALS,
                peerId,
                apiHttpMethod,
                apiPath,
                apiData);
        if (isValidJSON(s)) {
            ObjectMapper objectMapper = new ObjectMapper();
            EdgeCallResult edgeCallResult = objectMapper.readValue(s, EdgeCallResult.class);
            System.out.println("telegram_hash: " + edgeCallResult.getTelegram_hash());
            System.out.println("response: " + new String(Base64.getDecoder().decode(edgeCallResult.getResponse())));
        } else {
            System.out.println("invalid json");
        }
    }
}
```

### License

Apache 2.0


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.emc.network/emc/openverse/emc-java-sdk.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.