diff --git a/inventory/cargo.go b/inventory/cargo.go
index f62f355..4de413a 100644
--- a/inventory/cargo.go
+++ b/inventory/cargo.go
@@ -1,9 +1,15 @@
 package inventory
 
+import "github.com/yookoala/realpath"
+import "fmt"
+import "github.com/BurntSushi/toml"
+import "os"
 import "encoding/json"
 import "os/exec"
+import "errors"
 import "bytes"
 import "path"
+import "io/ioutil"
 
 func readCargoCrates(packagePath string) ([]Project, error) {
 	var returned []Project
@@ -31,13 +37,14 @@ func readCargoCrates(packagePath string) ([]Project, error) {
 	return returned, nil
 }
 
+// CargoLicenseZeroMap describes metadata for Cargo crates.
 type CargoLicenseZeroMap struct {
-	Version   string                    `json:"version"`
-	Envelopes []ProjectManifestEnvelope `json:"ids"`
+	Version   string                    `json:"version" toml:"version"`
+	Envelopes []ProjectManifestEnvelope `json:"ids" toml:"ids"`
 }
 
 type cargoMetadataMap struct {
-	LicenseZero CargoLicenseZeroMap `json:"licensezero"`
+	LicenseZero CargoLicenseZeroMap `json:"licensezero" toml:"licensezero"`
 }
 
 type cargoMetadataPackage struct {
@@ -67,3 +74,43 @@ func cargoReadMetadata(packagePath string) (*cargoMetadataOutput, error) {
 	}
 	return &parsed, nil
 }
+
+type cargoTOMLData struct {
+	Package cargoTOMLPackage `toml:"package"`
+}
+
+type cargoTOMLPackage struct {
+	Name     string           `toml:"name"`
+	Version  string           `toml:"version"`
+	Metadata cargoMetadataMap `toml:"metadata"`
+}
+
+// ReadCargoTOML reads metadata from Cargo.toml.
+func ReadCargoTOML(directoryPath string) ([]Project, error) {
+	var returned []Project
+	cargoTOML := path.Join(directoryPath, "Cargo.toml")
+	data, err := ioutil.ReadFile(cargoTOML)
+	if err != nil {
+		return nil, err
+	}
+	var parsed cargoTOMLData
+	if _, err := toml.Decode(string(data), &parsed); err != nil {
+		return nil, errors.New("could not parse Cargo.toml")
+	}
+	fmt.Printf("%+v\n", parsed)
+	for _, envelope := range parsed.Package.Metadata.LicenseZero.Envelopes {
+		project := Project{
+			Path:     directoryPath,
+			Envelope: envelope,
+		}
+		os.Stdout.WriteString(project.Envelope.Manifest.ProjectID)
+		realDirectory, err := realpath.Realpath(directoryPath)
+		if err != nil {
+			project.Path = realDirectory
+		} else {
+			project.Path = directoryPath
+		}
+		returned = append(returned, project)
+	}
+	return returned, nil
+}
diff --git a/inventory/generic.go b/inventory/generic.go
index 9e5ab0c..a67b96b 100644
--- a/inventory/generic.go
+++ b/inventory/generic.go
@@ -2,6 +2,7 @@ package inventory
 
 import "encoding/json"
 import "github.com/yookoala/realpath"
+import "errors"
 import "io/ioutil"
 import "os"
 import "path"
@@ -69,6 +70,24 @@ func findPackageInfo(directoryPath string) *Project {
 	return nil
 }
 
+// ReadLocalProjects reads project metadata from various files.
+func ReadLocalProjects(directoryPath string) ([]Project, error) {
+	var results []Project
+	var hadResults = 0
+	var readerFunctions = []func(string) ([]Project, error){ReadLicenseZeroJSON, ReadCargoTOML}
+	for _, readerFunction := range readerFunctions {
+		projects, err := readerFunction(directoryPath)
+		if err == nil {
+			hadResults = hadResults + 1
+			results = projects
+		}
+	}
+	if hadResults > 1 {
+		return nil, errors.New("multiple metadata files")
+	}
+	return results, nil
+}
+
 // ReadLicenseZeroJSON read metadata from licensezero.json.
 func ReadLicenseZeroJSON(directoryPath string) ([]Project, error) {
 	var returned []Project
diff --git a/inventory/inventory.go b/inventory/inventory.go
index 3f7c41b..720712a 100644
--- a/inventory/inventory.go
+++ b/inventory/inventory.go
@@ -17,22 +17,22 @@ type Project struct {
 
 // ProjectManifestEnvelope describes a signed project manifest.
 type ProjectManifestEnvelope struct {
-	LicensorSignature string          `json:"licensorSignature"`
-	AgentSignature    string          `json:"agentSignature"`
-	Manifest          ProjectManifest `json:"license"`
+	LicensorSignature string          `json:"licensorSignature" toml:"licensorSignature"`
+	AgentSignature    string          `json:"agentSignature" toml:"agentSignature"`
+	Manifest          ProjectManifest `json:"license" toml:"license"`
 }
 
 // ProjectManifest describes contribution set data from licensezero.json.
 type ProjectManifest struct {
 	// Note: These declaration must appear in the order so as to
 	// serialize in the correct order for signature verification.
-	Repository   string `json:"homepage"`
-	Jurisdiction string `json:"jurisdiction"`
-	Name         string `json:"name"`
-	ProjectID    string `json:"projectID"`
-	PublicKey    string `json:"publicKey"`
-	Terms        string `json:"terms"`
-	Version      string `json:"version"`
+	Repository   string `json:"homepage" toml:"homepage"`
+	Jurisdiction string `json:"jurisdiction" tom:"jurisdiction"`
+	Name         string `json:"name" toml:"name"`
+	ProjectID    string `json:"projectID" toml:"projectID"`
+	PublicKey    string `json:"publicKey" toml:"publicKey"`
+	Terms        string `json:"terms" toml:"terms"`
+	Version      string `json:"version" toml:"version"`
 }
 
 // Projects describes the categorization of projects in inventory.
diff --git a/subcommands/readme.go b/subcommands/readme.go
index d8ba6cb..c88dddb 100644
--- a/subcommands/readme.go
+++ b/subcommands/readme.go
@@ -36,7 +36,7 @@ var README = &Subcommand{
 		}
 		existing = existing + "# Licensing"
 		if len(projectIDs) == 0 {
-			Fail("No License Zero project metadata in licensezero.json.")
+			Fail("No License Zero project metadata.")
 		}
 		haveReciprocal := false
 		haveNoncommercial := false
@@ -149,7 +149,7 @@ func twoOrMore(values []bool) bool {
 }
 
 func readEntries(directory string) ([]string, []string, error) {
-	projects, err := inventory.ReadLicenseZeroJSON(directory)
+	var projects, err = inventory.ReadLocalProjects(directory)
 	if err != nil {
 		return nil, nil, err
 	}