diff --git a/pkg/recon/sources/github_test.go b/pkg/recon/sources/github_test.go
new file mode 100644
index 0000000..cbe8ce6
--- /dev/null
+++ b/pkg/recon/sources/github_test.go
@@ -0,0 +1,227 @@
+package sources
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/salvacybersec/keyhunter/pkg/providers"
+	"github.com/salvacybersec/keyhunter/pkg/recon"
+)
+
+// syntheticRegistry builds a two-provider registry for tests.
+func syntheticRegistry() *providers.Registry {
+	return providers.NewRegistryFromProviders([]providers.Provider{
+		{Name: "openai", Keywords: []string{"sk-proj-"}},
+		{Name: "anthropic", Keywords: []string{"sk-ant-"}},
+	})
+}
+
+// ghStubHandler returns a handler that echoes the query back in two items.
+func ghStubHandler(t *testing.T, calls *int32) http.HandlerFunc {
+	t.Helper()
+	return func(w http.ResponseWriter, r *http.Request) {
+		atomic.AddInt32(calls, 1)
+		if r.URL.Path != "/search/code" {
+			t.Errorf("unexpected path: %s", r.URL.Path)
+		}
+		if got := r.Header.Get("Authorization"); got != "Bearer testtoken" {
+			t.Errorf("missing bearer token: %q", got)
+		}
+		if got := r.Header.Get("Accept"); !strings.Contains(got, "text-match") {
+			t.Errorf("missing text-match accept header: %q", got)
+		}
+		q := r.URL.Query().Get("q")
+		body := map[string]any{
+			"items": []map[string]any{
+				{
+					"html_url":   "https://github.com/org/repo/blob/main/a.env#" + q,
+					"repository": map[string]any{"full_name": "org/repo"},
+					"text_matches": []map[string]any{
+						{"fragment": "snippet for " + q},
+					},
+				},
+				{
+					"html_url":   "https://github.com/org/repo/blob/main/b.env#" + q,
+					"repository": map[string]any{"full_name": "org/repo"},
+				},
+			},
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_ = json.NewEncoder(w).Encode(body)
+	}
+}
+
+func TestGitHubSource_EnabledReflectsToken(t *testing.T) {
+	reg := syntheticRegistry()
+	lim := recon.NewLimiterRegistry()
+
+	if s := NewGitHubSource("", reg, lim); s.Enabled(recon.Config{}) {
+		t.Errorf("expected Enabled=false with empty token")
+	}
+	if s := NewGitHubSource("tok", reg, lim); !s.Enabled(recon.Config{}) {
+		t.Errorf("expected Enabled=true with token")
+	}
+}
+
+func TestGitHubSource_SweepEmptyTokenReturnsNil(t *testing.T) {
+	reg := syntheticRegistry()
+	lim := recon.NewLimiterRegistry()
+	s := NewGitHubSource("", reg, lim)
+
+	out := make(chan recon.Finding, 10)
+	if err := s.Sweep(context.Background(), "", out); err != nil {
+		t.Fatalf("expected nil err, got %v", err)
+	}
+	close(out)
+	if n := countFindings(out); n != 0 {
+		t.Fatalf("expected 0 findings, got %d", n)
+	}
+}
+
+func TestGitHubSource_SweepEmitsFindings(t *testing.T) {
+	reg := syntheticRegistry()
+	lim := recon.NewLimiterRegistry()
+
+	var calls int32
+	srv := httptest.NewServer(ghStubHandler(t, &calls))
+	defer srv.Close()
+
+	s := NewGitHubSource("testtoken", reg, lim)
+	s.BaseURL = srv.URL
+	// Use a generous limiter so the test doesn't wait seconds for each query.
+	// Overwrite via the limiter registry by pre-registering at high rate.
+	_ = lim.For(s.Name(), 1000, 100)
+
+	out := make(chan recon.Finding, 32)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	done := make(chan error, 1)
+	go func() { done <- s.Sweep(ctx, "", out); close(out) }()
+
+	var findings []recon.Finding
+	for f := range out {
+		findings = append(findings, f)
+	}
+	if err := <-done; err != nil {
+		t.Fatalf("Sweep error: %v", err)
+	}
+
+	// syntheticRegistry has 2 keywords -> 2 queries -> 2 items each = 4 findings.
+	if len(findings) != 4 {
+		t.Fatalf("expected 4 findings, got %d", len(findings))
+	}
+	for _, f := range findings {
+		if f.SourceType != "recon:github" {
+			t.Errorf("SourceType=%q want recon:github", f.SourceType)
+		}
+		if !strings.HasPrefix(f.Source, "https://github.com/org/repo/blob/main/") {
+			t.Errorf("Source=%q unexpected", f.Source)
+		}
+		if f.ProviderName != "openai" && f.ProviderName != "anthropic" {
+			t.Errorf("ProviderName=%q unexpected", f.ProviderName)
+		}
+	}
+
+	// Two queries -> two calls.
+	if got := atomic.LoadInt32(&calls); got != 2 {
+		t.Errorf("expected 2 calls, got %d", got)
+	}
+}
+
+func TestGitHubSource_ProviderNameFromKeyword(t *testing.T) {
+	reg := syntheticRegistry()
+	lim := recon.NewLimiterRegistry()
+	_ = lim.For("github", 1000, 100)
+
+	// Track which query came in so we can assert providerName mapping per-call.
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		q := r.URL.Query().Get("q")
+		body := fmt.Sprintf(`{"items":[{"html_url":"https://example/%s","repository":{"full_name":"o/r"}}]}`, q)
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(body))
+	}))
+	defer srv.Close()
+
+	s := NewGitHubSource("tok", reg, lim)
+	s.BaseURL = srv.URL
+
+	out := make(chan recon.Finding, 8)
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	if err := s.Sweep(ctx, "", out); err != nil {
+		t.Fatalf("Sweep: %v", err)
+	}
+	close(out)
+
+	// BuildQueries returns sorted keywords: sk-ant- then sk-proj-.
+	// So findings should arrive in that order.
+	var got []string
+	for f := range out {
+		got = append(got, f.ProviderName)
+	}
+	if len(got) != 2 {
+		t.Fatalf("expected 2 findings, got %d", len(got))
+	}
+	if got[0] != "anthropic" || got[1] != "openai" {
+		t.Errorf("expected sorted provider names [anthropic openai], got %v", got)
+	}
+}
+
+func TestGitHubSource_CtxCancelled(t *testing.T) {
+	reg := syntheticRegistry()
+	lim := recon.NewLimiterRegistry()
+	_ = lim.For("github", 1000, 100)
+
+	s := NewGitHubSource("tok", reg, lim)
+	s.BaseURL = "http://127.0.0.1:1" // unused, should never be reached
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	out := make(chan recon.Finding, 1)
+	err := s.Sweep(ctx, "", out)
+	if !errors.Is(err, context.Canceled) {
+		t.Fatalf("expected context.Canceled, got %v", err)
+	}
+}
+
+func TestGitHubSource_Unauthorized(t *testing.T) {
+	reg := syntheticRegistry()
+	lim := recon.NewLimiterRegistry()
+	_ = lim.For("github", 1000, 100)
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusUnauthorized)
+		_, _ = w.Write([]byte("bad token"))
+	}))
+	defer srv.Close()
+
+	s := NewGitHubSource("tok", reg, lim)
+	s.BaseURL = srv.URL
+
+	out := make(chan recon.Finding, 1)
+	err := s.Sweep(context.Background(), "", out)
+	if !errors.Is(err, ErrUnauthorized) {
+		t.Fatalf("expected ErrUnauthorized, got %v", err)
+	}
+}
+
+// Compile-time assertion that GitHubSource satisfies recon.ReconSource.
+var _ recon.ReconSource = (*GitHubSource)(nil)
+
+func countFindings(ch <-chan recon.Finding) int {
+	n := 0
+	for range ch {
+		n++
+	}
+	return n
+}