diff --git a/heyfil.go b/heyfil.go
index ff7d86d..6380237 100644
--- a/heyfil.go
+++ b/heyfil.go
@@ -38,9 +38,14 @@ func newHeyFil(o ...Option) (*heyFil, error) {
 	if err != nil {
 		return nil, err
 	}
+	c := jsonrpc.NewClient(opts.api)
+	if opts.apiToken != "" {
+		c = jsonrpc.NewClientWithOpts(opts.api, &jsonrpc.RPCClientOpts{CustomHeaders: map[string]string{"Authorization": "Bearer " + opts.apiToken}})
+
+	}
 	hf := &heyFil{
 		options: opts,
-		c:       jsonrpc.NewClient(opts.api),
+		c:       c,
 		targets: make(map[string]*Target),
 		toCheck: make(chan *Target, 100),
 		checked: make(chan *Target, 100),
diff --git a/main.go b/main.go
index 579632d..69bdebb 100644
--- a/main.go
+++ b/main.go
@@ -13,12 +13,14 @@ func main() {
 	httpIndexerEndpoint := flag.String("httpIndexerEndpoint", "https://cid.contact", "The HTTP IPNI endpoint to which announcements are made.")
 	maxConcurrentChecks := flag.Int("maxConcurrentChecks", 10, "The maximum number of concurrent checks.")
 	storePath := flag.String("storePath", "", "The directory to use for storing the discovered SP information.")
+	token := flag.String("token", "", "A bearer token to pass for auth to the filecoin api endpoint.")
 	flag.Parse()
 
 	hf, err := newHeyFil(
 		WithHttpIndexerEndpoint(*httpIndexerEndpoint),
 		WithMaxConcurrentChecks(*maxConcurrentChecks),
 		WithStorePath(*storePath),
+		WithFileCoinAPIToken(*token),
 	)
 	if err != nil {
 		panic(err)
diff --git a/options.go b/options.go
index 4e93d3f..88af9bd 100644
--- a/options.go
+++ b/options.go
@@ -14,6 +14,7 @@ type (
 	Option  func(*options) error
 	options struct {
 		api                           string
+		apiToken                      string
 		h                             host.Host
 		topic                         string
 		headProtocolPattern           *regexp.Regexp
@@ -36,6 +37,7 @@ type (
 func newOptions(o ...Option) (*options, error) {
 	opts := &options{
 		api:                           `https://api.node.glif.io`,
+		apiToken:                      ``,
 		marketDealsS3Snapshot:         `https://marketdeals.s3.amazonaws.com/StateMarketDeals.json.zst`,
 		marketDealsFilTools:           `https://filecoin.tools/api/deals/list`,
 		httpIndexerEndpoint:           `https://cid.contact`,
@@ -74,6 +76,13 @@ func WithFileCoinAPI(url string) Option {
 	}
 }
 
+func WithFileCoinAPIToken(token string) Option {
+	return func(o *options) error {
+		o.apiToken = token
+		return nil
+	}
+}
+
 // WithHost specifies the libp2p host.
 // If unset, a new host with random identity is instantiated.
 func WithHost(h host.Host) Option {