diff --git a/.gitignore b/.gitignore
index 89ec9e2..bfb6935 100644
--- a/.gitignore
+++ b/.gitignore
@@ -172,4 +172,4 @@ Icon
 Network Trash Folder
 Temporary Items
 .apdisk
-
+bin/
diff --git a/Makefile b/Makefile
index d6e8363..c7bf0a5 100644
--- a/Makefile
+++ b/Makefile
@@ -6,14 +6,16 @@ PKG := .
 SKILL_NAME := rollbar-cli
 SKILL_SOURCE_DIR := .ai/skills/$(SKILL_NAME)
 AI_SKILL_DIRS ?= $(HOME)/.codex/skills $(HOME)/.claude/skills $(HOME)/.config/claude/skills $(HOME)/.cursor/skills $(HOME)/.windsurf/skills
+CROSS_PLATFORMS := darwin/amd64 darwin/arm64 linux/amd64 linux/arm64 windows/amd64 windows/arm64
 
-.PHONY: all build install install-skill test test-cover clean help
+.PHONY: all build build-cross install install-skill test test-cover clean help
 
 all: build
 
 help:
 	@echo "Targets:"
 	@echo "  make build       Build $(BINARY) into $(BUILD_DIR)/"
+	@echo "  make build-cross Build common cross-platform binaries into $(BUILD_DIR)/"
 	@echo "  make install     Install $(BINARY) with 'go install'"
 	@echo "  make install-skill  Install .ai skill into common AI tool skill dirs"
 	@echo "  make test        Run unit tests"
@@ -24,6 +26,20 @@ build:
 	@mkdir -p $(BUILD_DIR)
 	go build -o $(BUILD_DIR)/$(BINARY) $(PKG)
 
+build-cross:
+	@mkdir -p $(BUILD_DIR)
+	@set -e; \
+	for target in $(CROSS_PLATFORMS); do \
+		goos=$${target%/*}; \
+		goarch=$${target#*/}; \
+		output="$(BUILD_DIR)/$(BINARY)_$${goos}_$${goarch}"; \
+		if [ "$$goos" = "windows" ]; then \
+			output="$$output.exe"; \
+		fi; \
+		echo "Building $$output"; \
+		CGO_ENABLED=0 GOOS=$$goos GOARCH=$$goarch go build -trimpath -ldflags="-s -w" -o "$$output" $(PKG); \
+	done
+
 install: install-skill
 	go install $(PKG)
 
diff --git a/README.md b/README.md
index 597b29e..f19bb4c 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,9 @@ If you install with `go install` or `make install`, you can run `rollbar-cli ...
 # build binary into bin/
 make build
 
+# build common macOS, Linux, and Windows binaries into bin/
+make build-cross
+
 # install skill into common AI tool skill directories
 make install-skill