diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..f3ab914
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+golang 1.20
diff --git a/cmd/mint/debug.go b/cmd/mint/debug.go
index 6ab8374..112af61 100644
--- a/cmd/mint/debug.go
+++ b/cmd/mint/debug.go
@@ -12,10 +12,10 @@ var debugCmd = &cobra.Command{
 		return requireAccessToken()
 	},
 	RunE: func(cmd *cobra.Command, args []string) error {
-		return service.DebugTask(cli.DebugTaskConfig{RunURL: args[0]})
+		return service.DebugTask(cli.DebugTaskConfig{DebugKey: args[0]})
 	},
 	Short: "Debug a task on Mint",
-	Use:   "debug [flags] [runURL]",
+	Use:   "debug [flags] [debugKey]",
 }
 
 func init() {
diff --git a/internal/api/client.go b/internal/api/client.go
index ce37a88..a954d2a 100644
--- a/internal/api/client.go
+++ b/internal/api/client.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 
 	"github.com/rwx-research/mint-cli/cmd/mint/config"
 	"github.com/rwx-research/mint-cli/internal/accesstoken"
@@ -45,14 +46,14 @@ func NewClient(cfg Config) (Client, error) {
 	return Client{roundTrip}, nil
 }
 
-func (c Client) GetDebugConnectionInfo(runID string) (DebugConnectionInfo, error) {
+func (c Client) GetDebugConnectionInfo(debugKey string) (DebugConnectionInfo, error) {
 	connectionInfo := DebugConnectionInfo{}
 
-	if runID == "" {
-		return connectionInfo, errors.New("missing runID")
+	if debugKey == "" {
+		return connectionInfo, errors.New("missing debugKey")
 	}
 
-	endpoint := fmt.Sprintf("/mint/api/runs/%s/debug_connection_info", runID)
+	endpoint := fmt.Sprintf("/mint/api/debug_connection_info?debug_key=%s", url.QueryEscape(debugKey))
 	req, err := http.NewRequest(http.MethodGet, endpoint, nil)
 	if err != nil {
 		return connectionInfo, errors.Wrap(err, "unable to create new HTTP request")
@@ -68,6 +69,10 @@ func (c Client) GetDebugConnectionInfo(runID string) (DebugConnectionInfo, error
 	case 200:
 		break
 	case 400:
+		connectionError := DebugConnectionInfoError{}
+		if err := json.NewDecoder(resp.Body).Decode(&connectionError); err == nil {
+			return connectionInfo, errors.New(connectionError.Error)
+		}
 		return connectionInfo, errors.ErrBadRequest
 	case 404:
 		return connectionInfo, errors.ErrNotFound
diff --git a/internal/api/debug_connection_info.go b/internal/api/debug_connection_info.go
index 8ce49e0..4bce28b 100644
--- a/internal/api/debug_connection_info.go
+++ b/internal/api/debug_connection_info.go
@@ -5,3 +5,7 @@ type DebugConnectionInfo struct {
 	PublicHostKey  string `json:"public_host_key"`
 	PrivateUserKey string `json:"private_user_key"`
 }
+
+type DebugConnectionInfoError struct {
+	Error         string
+}
diff --git a/internal/cli/config.go b/internal/cli/config.go
index 0dc6d7e..5717503 100644
--- a/internal/cli/config.go
+++ b/internal/cli/config.go
@@ -31,12 +31,12 @@ func (c Config) Validate() error {
 }
 
 type DebugTaskConfig struct {
-	RunURL string
+	DebugKey string
 }
 
 func (c DebugTaskConfig) Validate() error {
-	if c.RunURL == "" {
-		return errors.New("missing Mint run URL")
+	if c.DebugKey == "" {
+		return errors.New("you must specify a run ID, a task ID, or a Mint Cloud URL")
 	}
 
 	return nil
diff --git a/internal/cli/interfaces.go b/internal/cli/interfaces.go
index 47e6765..6ccc61b 100644
--- a/internal/cli/interfaces.go
+++ b/internal/cli/interfaces.go
@@ -7,7 +7,7 @@ import (
 )
 
 type APIClient interface {
-	GetDebugConnectionInfo(runID string) (api.DebugConnectionInfo, error)
+	GetDebugConnectionInfo(debugKey string) (api.DebugConnectionInfo, error)
 	InitiateRun(api.InitiateRunConfig) (*api.InitiateRunResult, error)
 	ObtainAuthCode(api.ObtainAuthCodeConfig) (*api.ObtainAuthCodeResult, error)
 	AcquireToken(tokenUrl string) (*api.AcquireTokenResult, error)
diff --git a/internal/cli/service.go b/internal/cli/service.go
index 4036bec..a80f9a1 100644
--- a/internal/cli/service.go
+++ b/internal/cli/service.go
@@ -39,20 +39,9 @@ func (s Service) DebugTask(cfg DebugTaskConfig) error {
 		return errors.Wrap(err, "validation failed")
 	}
 
-	runId := filepath.Base(cfg.RunURL)
-
-	connectionInfo, err := s.APIClient.GetDebugConnectionInfo(runId)
+	connectionInfo, err := s.APIClient.GetDebugConnectionInfo(cfg.DebugKey)
 	if err != nil {
-		switch {
-		case errors.Is(err, errors.ErrBadRequest):
-			return errors.New(fmt.Sprintf("Run %q doesn't appear to have a task that's ready to debug. Please check the run status in your browser.", runId))
-		case errors.Is(err, errors.ErrNotFound):
-			return errors.New(fmt.Sprintf("Unknown run %q. Please invoke 'mint debug' with a URL to a run.", runId))
-		case errors.Is(err, errors.ErrGone):
-			return errors.New("Unable to locate a server instance for your run. Please retry the execution of the entire run and contact us if the issues persits.")
-		default:
-			return errors.Wrapf(err, "unable to fetch connection info for run %s", runId)
-		}
+		return err
 	}
 
 	privateUserKey, err := ssh.ParsePrivateKey([]byte(connectionInfo.PrivateUserKey))
diff --git a/internal/cli/service_test.go b/internal/cli/service_test.go
index d8dd6dd..9cb0d63 100644
--- a/internal/cli/service_test.go
+++ b/internal/cli/service_test.go
@@ -835,7 +835,7 @@ AAAEC6442PQKevgYgeT0SIu9zwlnEMl6MF59ZgM+i0ByMv4eLJPqG3xnZcEQmktHj/GY2i
 			runID = fmt.Sprintf("run-%d", GinkgoRandomSeed())
 
 			debugConfig = cli.DebugTaskConfig{
-				RunURL: fmt.Sprintf("https://cloud.rwx.com/mint/rwx/runs/%s", runID),
+				DebugKey: runID,
 			}
 
 			mockAPI.MockGetDebugConnectionInfo = func(runId string) (api.DebugConnectionInfo, error) {