diff --git a/agent/redact.py b/agent/redact.py
index c69003fcf..307e5dc3a 100644
--- a/agent/redact.py
+++ b/agent/redact.py
@@ -106,6 +106,7 @@ _PREFIX_PATTERNS = [
     r"brv_[A-Za-z0-9]{10,}",            # ByteRover API key
     r"xai-[A-Za-z0-9]{30,}",            # xAI (Grok) API key
     r"ntn_[A-Za-z0-9]{10,}",            # Notion internal integration token
+    r"fw_[A-Za-z0-9]{30,}",             # Fireworks AI API key
 ]
 
 # ENV assignment patterns: KEY=value where KEY contains a secret-like name.
diff --git a/tests/agent/test_redact.py b/tests/agent/test_redact.py
index afa841cb0..4174cd58a 100644
--- a/tests/agent/test_redact.py
+++ b/tests/agent/test_redact.py
@@ -886,3 +886,25 @@ class TestFileReadNonReusableRedaction:
         out = redact_sensitive_text(f"key: {self.SK}", force=True, file_read=True)
         assert "«redacted:sk-…»" in out
         assert self.SK not in out
+
+
+class TestFireworksToken:
+    KEY = "fw_" + "A" * 40
+
+    def test_bare_token_masked(self):
+        result = redact_sensitive_text(f"fireworks error: key {self.KEY}", force=True)
+        assert self.KEY not in result
+        assert "fw_AA" in result
+
+    def test_env_assignment_masked(self):
+        result = redact_sensitive_text(f"FIREWORKS_API_KEY={self.KEY}", force=True)
+        assert self.KEY not in result
+
+    def test_too_short_not_masked(self):
+        short = "fw_tooshort"
+        result = redact_sensitive_text(f"text {short} here", force=True)
+        assert short in result
+
+    def test_prefix_visible_in_masked_output(self):
+        result = redact_sensitive_text(self.KEY, force=True)
+        assert result.startswith("fw_AA")