uncloseai.
+C Examples - Free LLM & TTS AI Service
+ + +C Examples
+This page demonstrates how to use the uncloseai. API endpoints with C using libcurl. All examples use the OpenAI-compatible API interface, making it easy to switch between different models and endpoints.
+ +Available Endpoints:
+-
+
- Hermes:
https://hermes.ai.unturf.com/v1- General purpose conversational AI
+ - Qwen 3 Coder:
https://qwen.ai.unturf.com/v1- Specialized coding model
+ - TTS:
https://speech.ai.unturf.com/v1- Text-to-speech generation
+
Setup & Dependencies
+Install libcurl development libraries:
+# Ubuntu/Debian
+sudo apt-get install libcurl4-openssl-dev
+
+# macOS
+brew install curl
+
+# Alpine
+apk add curl-devCompile with:
+gcc -o chat chat.c -lcurlNon-Streaming Examples
+Non-streaming mode waits for the complete response before returning. This is simpler to use but provides no intermediate feedback during generation.
+ +Using Hermes (General Purpose)
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <curl/curl.h>
+
+struct Memory {
+ char *response;
+ size_t size;
+};
+
+static size_t write_callback(void *data, size_t size, size_t nmemb, void *userp) {
+ size_t realsize = size * nmemb;
+ struct Memory *mem = (struct Memory *)userp;
+ char *ptr = realloc(mem->response, mem->size + realsize + 1);
+ if (!ptr) return 0;
+ mem->response = ptr;
+ memcpy(&(mem->response[mem->size]), data, realsize);
+ mem->size += realsize;
+ mem->response[mem->size] = 0;
+ return realsize;
+}
+
+int main(void) {
+ CURL *curl = curl_easy_init();
+ if (!curl) return 1;
+
+ struct Memory chunk = {.response = malloc(1), .size = 0};
+ struct curl_slist *headers = NULL;
+ headers = curl_slist_append(headers, "Content-Type: application/json");
+
+ const char *payload =
+ "{"
+ "\"model\": \"adamo1139/Hermes-3-Llama-3.1-8B-FP8-Dynamic\","
+ "\"messages\": [{\"role\": \"user\", \"content\": \"Give a Python Fizzbuzz solution in one line of code?\"}],"
+ "\"max_tokens\": 150"
+ "}";
+
+ curl_easy_setopt(curl, CURLOPT_URL, "https://hermes.ai.unturf.com/v1/chat/completions");
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+ curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+
+ CURLcode res = curl_easy_perform(curl);
+ if (res == CURLE_OK) {
+ printf("Response:\n%s\n", chunk.response);
+ }
+
+ curl_slist_free_all(headers);
+ curl_easy_cleanup(curl);
+ free(chunk.response);
+ return 0;
+}Using Qwen 3 Coder (Specialized for Coding)
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <curl/curl.h>
+
+// ... same write_callback and Memory struct as above ...
+
+int main(void) {
+ CURL *curl = curl_easy_init();
+ if (!curl) return 1;
+
+ struct Memory chunk = {.response = malloc(1), .size = 0};
+ struct curl_slist *headers = NULL;
+ headers = curl_slist_append(headers, "Content-Type: application/json");
+
+ const char *payload =
+ "{"
+ "\"model\": \"hf.co/unsloth/Qwen3-Coder-30B-A3B-Instruct-GGUF:Q4_K_M\","
+ "\"messages\": [{\"role\": \"user\", \"content\": \"Explain quicksort in C with code\"}],"
+ "\"max_tokens\": 500"
+ "}";
+
+ curl_easy_setopt(curl, CURLOPT_URL, "https://qwen.ai.unturf.com/v1/chat/completions");
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+ curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+
+ CURLcode res = curl_easy_perform(curl);
+ if (res == CURLE_OK) {
+ printf("Response:\n%s\n", chunk.response);
+ }
+
+ curl_slist_free_all(headers);
+ curl_easy_cleanup(curl);
+ free(chunk.response);
+ return 0;
+}Streaming Examples
+Streaming mode returns chunks of the response as they are generated, providing real-time feedback. This is ideal for interactive applications and long responses.
+ +Streaming with Hermes
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <curl/curl.h>
+
+static size_t stream_callback(void *data, size_t size, size_t nmemb, void *userp) {
+ size_t realsize = size * nmemb;
+ char *chunk = (char *)data;
+
+ // Process SSE data lines
+ char *line = strtok(chunk, "\n");
+ while (line) {
+ if (strncmp(line, "data: ", 6) == 0) {
+ const char *json = line + 6;
+ if (strcmp(json, "[DONE]") != 0) {
+ // Extract content from: {"choices":[{"delta":{"content":"..."}}]}
+ const char *content_start = strstr(json, "\"content\":\"");
+ if (content_start) {
+ content_start += 11;
+ const char *content_end = strchr(content_start, '"');
+ if (content_end) {
+ fwrite(content_start, 1, content_end - content_start, stdout);
+ fflush(stdout);
+ }
+ }
+ }
+ }
+ line = strtok(NULL, "\n");
+ }
+ return realsize;
+}
+
+int main(void) {
+ CURL *curl = curl_easy_init();
+ if (!curl) return 1;
+
+ struct curl_slist *headers = NULL;
+ headers = curl_slist_append(headers, "Content-Type: application/json");
+
+ const char *payload =
+ "{"
+ "\"model\": \"adamo1139/Hermes-3-Llama-3.1-8B-FP8-Dynamic\","
+ "\"messages\": [{\"role\": \"user\", \"content\": \"Write a short poem about coding\"}],"
+ "\"max_tokens\": 200,"
+ "\"stream\": true"
+ "}";
+
+ curl_easy_setopt(curl, CURLOPT_URL, "https://hermes.ai.unturf.com/v1/chat/completions");
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+ curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, stream_callback);
+
+ printf("Streaming response:\n");
+ curl_easy_perform(curl);
+ printf("\n");
+
+ curl_slist_free_all(headers);
+ curl_easy_cleanup(curl);
+ return 0;
+}Text-to-Speech Examples
+Generate audio from text using the TTS endpoint.
+ +Basic TTS
+#include <stdio.h>
+#include <stdlib.h>
+#include <curl/curl.h>
+
+static size_t write_file(void *data, size_t size, size_t nmemb, void *userp) {
+ return fwrite(data, size, nmemb, (FILE *)userp);
+}
+
+int main(void) {
+ CURL *curl = curl_easy_init();
+ if (!curl) return 1;
+
+ FILE *fp = fopen("output.mp3", "wb");
+ if (!fp) {
+ curl_easy_cleanup(curl);
+ return 1;
+ }
+
+ struct curl_slist *headers = NULL;
+ headers = curl_slist_append(headers, "Content-Type: application/json");
+
+ const char *payload =
+ "{"
+ "\"model\": \"tts-1\","
+ "\"input\": \"Hello! This is a test of text to speech.\","
+ "\"voice\": \"alloy\""
+ "}";
+
+ curl_easy_setopt(curl, CURLOPT_URL, "https://speech.ai.unturf.com/v1/audio/speech");
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+ curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_file);
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
+
+ CURLcode res = curl_easy_perform(curl);
+ if (res == CURLE_OK) {
+ printf("Audio saved to output.mp3\n");
+ }
+
+ fclose(fp);
+ curl_slist_free_all(headers);
+ curl_easy_cleanup(curl);
+ return 0;
+}Available voices: alloy, echo, fable, onyx, nova, shimmer
Full SDK Implementation
+For a complete SDK with model discovery and advanced features, see the full implementations in the source repository:
+ + + + + + + +