diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
index de34b6f..6bba2db 100644
--- a/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
+++ b/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
@@ -1,7 +1,7 @@
 package com.onixbyte.deltaforceguide.config;
 
+import com.onixbyte.deltaforceguide.interceptor.GitHubWebhookInterceptor;
 import com.onixbyte.deltaforceguide.interceptor.TrafficInterceptor;
-import com.onixbyte.deltaforceguide.interceptor.GitLabWebhookInterceptor;
 import com.onixbyte.deltaforceguide.properties.AppProperties;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
@@ -15,21 +15,21 @@ public class AppConfig implements WebMvcConfigurer {
 
     private final TrafficInterceptor trafficInterceptor;
 
-    private final GitLabWebhookInterceptor gitLabWebhookInterceptor;
+    private final GitHubWebhookInterceptor gitHubWebhookInterceptor;
 
     @Autowired
     public AppConfig(
             TrafficInterceptor trafficInterceptor,
-            GitLabWebhookInterceptor gitLabWebhookInterceptor
+            GitHubWebhookInterceptor gitHubWebhookInterceptor
     ) {
         this.trafficInterceptor = trafficInterceptor;
-        this.gitLabWebhookInterceptor = gitLabWebhookInterceptor;
+        this.gitHubWebhookInterceptor = gitHubWebhookInterceptor;
     }
 
     @Override
     public void addInterceptors(InterceptorRegistry registry) {
         registry.addInterceptor(trafficInterceptor);
-        registry.addInterceptor(gitLabWebhookInterceptor)
-                .addPathPatterns("/webhook/gitlab");
+        registry.addInterceptor(gitHubWebhookInterceptor)
+                .addPathPatterns("/webhooks/github");
     }
 }
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java
new file mode 100644
index 0000000..580e1f9
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java
@@ -0,0 +1,43 @@
+package com.onixbyte.deltaforceguide.controller;
+
+import com.onixbyte.deltaforceguide.domain.dto.GitHubIssueRequest;
+import com.onixbyte.deltaforceguide.service.WebhookService;
+import com.onixbyte.deltaforceguide.shared.GitHubWebhookHeader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/webhooks/github")
+public class GitHubWebhookController {
+
+    private static final Logger log = LoggerFactory.getLogger(GitHubWebhookController.class);
+
+    private final WebhookService webhookService;
+
+    public GitHubWebhookController(WebhookService webhookService) {
+        this.webhookService = webhookService;
+    }
+
+    @PostMapping
+    public ResponseEntity<Void> handleWebhook(
+            @RequestHeader(GitHubWebhookHeader.EVENT) String event,
+            @RequestBody GitHubIssueRequest request
+    ) {
+        if (!"issues".equals(event)) {
+            log.debug("Ignoring non-issue event: {}", event);
+            return ResponseEntity.ok().build();
+        }
+        if (!"opened".equals(request.action())) {
+            log.debug("Ignoring issue action: {}", request.action());
+            return ResponseEntity.ok().build();
+        }
+        webhookService.processIssueEvent(request);
+        return ResponseEntity.ok().build();
+    }
+}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java b/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
index 4a1f50d..3489c2c 100644
--- a/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
+++ b/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
@@ -1,14 +1,192 @@
 package com.onixbyte.deltaforceguide.service;
 
-import com.onixbyte.deltaforceguide.manager.WebhookManager;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.onixbyte.deltaforceguide.domain.dto.AccessoryRequest;
+import com.onixbyte.deltaforceguide.domain.dto.GitHubIssueRequest;
+import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
+import com.onixbyte.deltaforceguide.domain.dto.TuningRequest;
+import com.onixbyte.deltaforceguide.manager.ModificationManager;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Service;
+import org.yaml.snakeyaml.Yaml;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Pattern;
 
 @Service
 public class WebhookService {
 
-    private final WebhookManager webhookManager;
+    private static final Logger log = LoggerFactory.getLogger(WebhookService.class);
+    private static final String TRIGGER_LABEL = "weapon-mod";
+    private static final Duration DEDUP_TTL = Duration.ofHours(12);
+    private static final Pattern YAML_FENCE =
+            Pattern.compile("```ya?ml\\s*\\n(.*?)```", Pattern.DOTALL);
 
-    public WebhookService(WebhookManager webhookManager) {
-        this.webhookManager = webhookManager;
+    private final ModificationManager modificationManager;
+    private final RedisTemplate<String, Object> redisTemplate;
+    private final Yaml yaml;
+
+    public WebhookService(
+            ModificationManager modificationManager,
+            RedisTemplate<String, Object> redisTemplate
+    ) {
+        this.modificationManager = modificationManager;
+        this.redisTemplate = redisTemplate;
+        this.yaml = new Yaml();
+    }
+
+    public void processIssueEvent(GitHubIssueRequest request) {
+        var issue = request.issue();
+        var repository = request.repository();
+
+        if (!hasTriggerLabel(issue.labels())) {
+            log.debug("Issue #{} lacks trigger label, skipping", issue.number());
+            return;
+        }
+
+        var dedupKey = "github:webhook:processed:%s:%d"
+                .formatted(repository.fullName(), issue.number());
+        var acquired = redisTemplate.opsForValue()
+                .setIfAbsent(dedupKey, "1", DEDUP_TTL);
+        if (acquired == null || !acquired) {
+            log.info("Issue #{} already processed, skipping", issue.number());
+            return;
+        }
+
+        var parsedYaml = extractYaml(issue.body());
+        if (parsedYaml == null) {
+            log.warn("No YAML block found in issue #{} body", issue.number());
+            return;
+        }
+
+        @SuppressWarnings("unchecked")
+        var data = (Map<String, Object>) yaml.load(parsedYaml);
+        if (data == null) {
+            log.warn("Empty YAML block in issue #{}", issue.number());
+            return;
+        }
+
+        if (data.containsKey("modifications")) {
+            processBatch(issue.number(), data);
+        } else {
+            processSingle(issue.number(), data);
+        }
+    }
+
+    private void processSingle(Long issueNumber, Map<String, Object> data) {
+        var request = mapToRequest(data);
+        log.info("Creating modification from issue #{}: name={}", issueNumber, request.name());
+        modificationManager.create(request);
+    }
+
+    @SuppressWarnings("unchecked")
+    private void processBatch(Long issueNumber, Map<String, Object> data) {
+        var list = (List<Map<String, Object>>) data.get("modifications");
+        if (list == null || list.isEmpty()) {
+            log.warn("Empty modifications list in issue #{}", issueNumber);
+            return;
+        }
+        var requests = list.stream()
+                .map(this::mapToRequest)
+                .toList();
+        log.info("Batch creating {} modifications from issue #{}", requests.size(), issueNumber);
+        modificationManager.batchCreate(requests);
+    }
+
+    private ModificationRequest mapToRequest(Map<String, Object> data) {
+        Long firearmId = toLong(data.get("firearmId"));
+        String name = (String) data.get("name");
+        String code = (String) data.get("code");
+        List<String> tags = toStringList(data.get("tags"));
+        List<AccessoryRequest> accessories = mapAccessories(data.get("accessories"));
+        String note = (String) data.get("note");
+        String author = (String) data.get("author");
+        String videoUrl = (String) data.get("videoUrl");
+
+        return new ModificationRequest(firearmId, name, code, tags, accessories,
+                note, author, videoUrl);
+    }
+
+    private List<AccessoryRequest> mapAccessories(Object raw) {
+        if (!(raw instanceof List<?> list)) {
+            return new ArrayList<>();
+        }
+        var result = new ArrayList<AccessoryRequest>();
+        for (var item : list) {
+            if (item instanceof Map<?, ?> map) {
+                result.add(new AccessoryRequest(
+                        (String) map.get("slotName"),
+                        (String) map.get("accessoryName"),
+                        mapTunings(map.get("tunings"))
+                ));
+            }
+        }
+        return result;
+    }
+
+    private List<TuningRequest> mapTunings(Object raw) {
+        if (!(raw instanceof List<?> list)) {
+            return new ArrayList<>();
+        }
+        var result = new ArrayList<TuningRequest>();
+        for (var item : list) {
+            if (item instanceof Map<?, ?> map) {
+                result.add(new TuningRequest(
+                        (String) map.get("tuningName"),
+                        toDouble(map.get("tuningValue"))
+                ));
+            }
+        }
+        return result;
+    }
+
+    private List<String> toStringList(Object raw) {
+        if (raw instanceof List<?> list) {
+            return list.stream()
+                    .filter(String.class::isInstance)
+                    .map(String.class::cast)
+                    .toList();
+        }
+        return new ArrayList<>();
+    }
+
+    private boolean hasTriggerLabel(List<com.onixbyte.deltaforceguide.domain.dto.GitHubWebhookLabel> labels) {
+        if (labels == null) {
+            return false;
+        }
+        return labels.stream().anyMatch(label -> TRIGGER_LABEL.equals(label.name()));
+    }
+
+    private String extractYaml(String body) {
+        if (body == null) {
+            return null;
+        }
+        var matcher = YAML_FENCE.matcher(body);
+        return matcher.find() ? matcher.group(1) : null;
+    }
+
+    private Long toLong(Object value) {
+        if (value instanceof Number num) {
+            return num.longValue();
+        }
+        if (value instanceof String s) {
+            return Long.parseLong(s);
+        }
+        return null;
+    }
+
+    private Double toDouble(Object value) {
+        if (value instanceof Number num) {
+            return num.doubleValue();
+        }
+        if (value instanceof String s) {
+            return Double.parseDouble(s);
+        }
+        return null;
     }
 }