feat: vaults, scopes and files show their details: a vault's settings, who has a scope, a file's keys and git status

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/azure.md

@@ -64,3 +64,10 @@ Secrets, keys and certificates, each on their own tab of the Secrets pane
 key (PEM public key) or certificate; private key material is never
 fetched. `v` lists an item's versions. Items expiring within
 `expiryWarningDays` (30 by default) are marked `⚠ 12d`, expired ones `✗`.
+
+On a vault, the right pane shows its settings from the Key Vault
+management API: resource group, location, SKU, whether access is by Azure
+roles or access policies, soft delete and purge protection, which networks
+can reach it, private endpoints and tags. They load the first time you're
+on the vault (`r` in the Vaults pane loads them again), and need read
+access to the vault resource, as discovering it does.

docs/databricks.md

@@ -13,6 +13,10 @@ Secrets in Azure Key Vault-backed scopes are read through Databricks; if
 Databricks refuses, lazysecrets reads the backing vault directly with your
 az login (which then needs the [Key Vault roles](azure.md#permissions)).
 
+On a scope, the right pane shows who has access to it and how much
+(manage, write, read). Databricks shows that only to the scope's
+managers; to others it says so.
+
 Hide profiles you don't want in the [config](config.md):
 
 ```yaml

docs/repos.md

@@ -63,6 +63,13 @@ copying or `lazysecrets get` decrypts one value with your `sops` binary, so
 whatever sops uses works (age keys, Azure Key Vault through az, AWS/GCP
 KMS, PGP). When sops can't decrypt, its whole error message is shown.
 
+On a file, the right pane shows how it's encrypted and the keys it's
+encrypted for (public: age recipients, Key Vault keys, KMS ARNs, PGP
+fingerprints), when it was last encrypted, and what git knows of it:
+tracked, ignored or neither, and its last commit. A plain `.env` file that
+git tracks, or that isn't ignored, is marked in red: its values are in the
+repo's history, or easily could be.
+
 ## Opening files
 
 `e` opens the selected file, or on a secret, its file at that key's line:

internal/provider/azure/azure_test.go

@@ -19,6 +19,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"reflect"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -417,3 +418,38 @@ func ecPoint(t *testing.T, k *ecdsa.PrivateKey) (x, y []byte) {
 	size := (len(b) - 1) / 2
 	return b[1 : 1+size], b[1+size:]
 }
+
+func TestVaultDetails(t *testing.T) {
+	id := "/subscriptions/s/resourceGroups/rg-sec/providers/Microsoft.KeyVault/vaults/kv"
+	p, _ := fakeAzure(t, staticCred{}, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != id {
+			http.NotFound(w, r)
+			return
+		}
+		writeJSON(w, 200, map[string]any{"id": id, "name": "kv", "location": "norwayeast",
+			"tags": map[string]any{"team": "platform", "env": "prod"},
+			"properties": map[string]any{
+				"tenantId": "t", "sku": map[string]any{"family": "A", "name": "premium"},
+				"enableRbacAuthorization": true, "enablePurgeProtection": true, "softDeleteRetentionInDays": 30,
+				"networkAcls":                map[string]any{"defaultAction": "Deny", "ipRules": []any{map[string]any{"value": "10.0.0.0/8"}}},
+				"privateEndpointConnections": []any{map[string]any{"id": "pe1"}},
+			}})
+	})
+	attrs, err := p.Details(context.Background(), provider.Container{ID: id})
+	if err != nil {
+		t.Fatal(err)
+	}
+	var got []string
+	for _, a := range attrs {
+		got = append(got, a.Label+"="+a.Value)
+	}
+	want := []string{"group=rg-sec", "location=norwayeast", "SKU=premium", "access=Azure roles (RBAC)",
+		"soft delete=on, 30 days", "purge prot.=on", "network=selected networks (1 IP ranges, 0 subnets)",
+		"private=1 endpoint", "tags=env: prod", "=team: platform"}
+	if !slices.Equal(got, want) {
+		t.Errorf("details\n got %q\nwant %q", got, want)
+	}
+	if _, err := p.Details(context.Background(), provider.Container{ID: "https://kv.vault.azure.net/"}); !errors.Is(err, provider.ErrUnsupported) {
+		t.Errorf("pinned vault: %v", err)
+	}
+}

internal/provider/azure/details.go

@@ -0,0 +1,106 @@
+package azure
+
+import (
+	"context"
+	"fmt"
+	"slices"
+	"strings"
+
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/arm"
+	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/keyvault/armkeyvault"
+
+	"git.kebcloud.no/keb/lazysecrets/internal/provider"
+)
+
+// Details are a vault's settings, from the Key Vault management API: where
+// it is, how access to it works, and how it's protected. Pinned vaults,
+// known only by their URL, have none.
+func (p *Provider) Details(ctx context.Context, c provider.Container) ([]provider.Attr, error) {
+	id, err := arm.ParseResourceID(c.ID)
+	if err != nil {
+		return nil, provider.ErrUnsupported
+	}
+	client, err := armkeyvault.NewVaultsClient(id.SubscriptionID, p.cred, p.opts.arm)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := client.Get(ctx, id.ResourceGroupName, id.Name, nil)
+	if err != nil {
+		return nil, cleanError(err)
+	}
+	return vaultAttrs(resp.Vault), nil
+}
+
+func vaultAttrs(v armkeyvault.Vault) []provider.Attr {
+	var out []provider.Attr
+	add := func(label, value string) {
+		if value != "" {
+			out = append(out, provider.Attr{Label: label, Value: value})
+		}
+	}
+	if id, err := arm.ParseResourceID(deref(v.ID)); err == nil {
+		add("group", id.ResourceGroupName)
+	}
+	add("location", deref(v.Location))
+	pr := v.Properties
+	if pr == nil {
+		return out
+	}
+	if pr.SKU != nil && pr.SKU.Name != nil {
+		add("SKU", string(*pr.SKU.Name))
+	}
+	// Who may read secrets is decided by Azure roles or by the vault's
+	// own access policies, never both.
+	if on(pr.EnableRbacAuthorization, false) {
+		add("access", "Azure roles (RBAC)")
+	} else {
+		add("access", fmt.Sprintf("access policies (%d)", len(pr.AccessPolicies)))
+	}
+	if on(pr.EnableSoftDelete, true) {
+		days := int32(90)
+		if pr.SoftDeleteRetentionInDays != nil {
+			days = *pr.SoftDeleteRetentionInDays
+		}
+		add("soft delete", fmt.Sprintf("on, %d days", days))
+	} else {
+		add("soft delete", "off")
+	}
+	add("purge prot.", map[bool]string{true: "on", false: "off"}[on(pr.EnablePurgeProtection, false)])
+	add("network", network(pr))
+	if n := len(pr.PrivateEndpointConnections); n > 0 {
+		add("private", fmt.Sprintf("%d endpoint%s", n, map[bool]string{true: "s"}[n > 1]))
+	}
+	keys := make([]string, 0, len(v.Tags))
+	for k := range v.Tags {
+		keys = append(keys, k)
+	}
+	slices.Sort(keys)
+	for i, k := range keys {
+		label := ""
+		if i == 0 {
+			label = "tags"
+		}
+		out = append(out, provider.Attr{Label: label, Value: k + ": " + deref(v.Tags[k])})
+	}
+	return out
+}
+
+// network is where the vault can be reached from.
+func network(pr *armkeyvault.VaultProperties) string {
+	if strings.EqualFold(deref(pr.PublicNetworkAccess), "disabled") {
+		return "private endpoints only"
+	}
+	acl := pr.NetworkACLs
+	if acl == nil || acl.DefaultAction == nil || *acl.DefaultAction != armkeyvault.NetworkRuleActionDeny {
+		return "all networks"
+	}
+	return fmt.Sprintf("selected networks (%d IP ranges, %d subnets)", len(acl.IPRules), len(acl.VirtualNetworkRules))
+}
+
+// on is *b, or def when it isn't set.
+func on(b *bool, def bool) bool {
+	if b == nil {
+		return def
+	}
+	return *b
+}

internal/provider/databricks/databricks_test.go

@@ -140,6 +140,13 @@ func workspaceAPI(t *testing.T, status int) *httptest.Server {
 				map[string]any{"key": "storage-key", "last_updated_timestamp": 1767225600000},
 				map[string]any{"key": "client-secret"},
 			}})
+		case r.URL.Path == "/api/2.0/secrets/acls/list" && q.Get("scope") == "app":
+			write(w, 200, map[string]any{"items": []any{
+				map[string]any{"principal": "users", "permission": "READ"},
+				map[string]any{"principal": "admins", "permission": "MANAGE"},
+			}})
+		case r.URL.Path == "/api/2.0/secrets/acls/list" && q.Get("scope") == "locked":
+			write(w, 403, map[string]any{"error_code": "PERMISSION_DENIED", "message": "User does not have MANAGE permission"})
 		case r.URL.Path == "/api/2.0/secrets/get" && q.Get("scope") == "app":
 			write(w, 200, map[string]any{"key": q.Get("key"),
 				"value": base64.StdEncoding.EncodeToString([]byte("value-of-" + q.Get("key")))})
@@ -291,3 +298,20 @@ func TestClassify(t *testing.T) {
 		t.Error("cancellation classified as auth")
 	}
 }
+
+func TestScopeDetails(t *testing.T) {
+	p := newTestProvider(t, workspaceAPI(t, 0), nil)
+	src := provider.Source{ID: "prod"}
+	attrs, err := p.Details(context.Background(), provider.Container{Source: src, Name: "app"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := []provider.Attr{{Label: "access", Value: "admins · manage"}, {Value: "users · read"}}
+	if !reflect.DeepEqual(attrs, want) {
+		t.Errorf("app: %+v", attrs)
+	}
+	attrs, err = p.Details(context.Background(), provider.Container{Source: src, Name: "locked"})
+	if err != nil || len(attrs) != 1 || !strings.Contains(attrs[0].Value, "managers") {
+		t.Errorf("locked: %+v, %v", attrs, err)
+	}
+}

internal/provider/databricks/details.go

@@ -0,0 +1,43 @@
+package databricks
+
+import (
+	"cmp"
+	"context"
+	"errors"
+	"slices"
+	"strings"
+
+	"github.com/databricks/databricks-sdk-go/apierr"
+	"github.com/databricks/databricks-sdk-go/service/workspace"
+
+	"git.kebcloud.no/keb/lazysecrets/internal/provider"
+)
+
+// Details are who has access to a scope, and how much. Only the scope's
+// managers may see that; to others it says so.
+func (p *Provider) Details(ctx context.Context, c provider.Container) ([]provider.Attr, error) {
+	w, pr, err := p.client(c.Source.ID)
+	if err != nil {
+		return nil, err
+	}
+	acls, err := w.ListAclsAll(ctx, workspace.ListAclsRequest{Scope: c.Name})
+	var api *apierr.APIError
+	switch {
+	case errors.As(err, &api) && api.StatusCode == 403:
+		return []provider.Attr{{Label: "access", Value: "only the scope's managers can see who has it"}}, nil
+	case err != nil:
+		return nil, classify(pr, err)
+	case len(acls) == 0:
+		return []provider.Attr{{Label: "access", Value: "workspace admins only"}}, nil
+	}
+	rank := map[workspace.AclPermission]int{workspace.AclPermissionManage: 0, workspace.AclPermissionWrite: 1, workspace.AclPermissionRead: 2}
+	slices.SortFunc(acls, func(a, b workspace.AclItem) int {
+		return cmp.Or(cmp.Compare(rank[a.Permission], rank[b.Permission]), cmp.Compare(a.Principal, b.Principal))
+	})
+	out := make([]provider.Attr, len(acls))
+	for i, a := range acls {
+		out[i] = provider.Attr{Value: a.Principal + " · " + strings.ToLower(string(a.Permission))}
+	}
+	out[0].Label = "access"
+	return out, nil
+}

internal/provider/provider.go

@@ -107,6 +107,7 @@ func (c Container) ObjectTypes() []ObjectType {
 type Attr struct {
 	Label string
 	Value string
+	Warn  bool // worth a look (a plain .env tracked by git): shown in red
 }
 
 // Object describes a secret, key or certificate without its value.
@@ -199,6 +200,14 @@ type Account struct {
 	Copy, CopyLabel string
 }
 
+// ContainerDetails is implemented by providers that can say more about a
+// container than its listing does: a vault's settings, who has access to
+// a scope, how a file is encrypted and what git knows of it. It may go
+// over the network; ErrUnsupported means there's nothing more for c.
+type ContainerDetails interface {
+	Details(ctx context.Context, c Container) ([]Attr, error)
+}
+
 // AccountGroups is implemented by providers that can list the groups
 // their account is a member of, directly or through other groups. It
 // goes over the network.

internal/provider/repo/details.go

@@ -0,0 +1,62 @@
+package repo
+
+import (
+	"context"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"git.kebcloud.no/keb/lazysecrets/internal/provider"
+)
+
+// Details are how a file is encrypted and for whom, and what git knows of
+// it: a plain .env file that git tracks, or could, is marked.
+func (p *Provider) Details(ctx context.Context, c provider.Container) ([]provider.Attr, error) {
+	r, ok := p.repo(c.Source.ID)
+	if !ok {
+		return nil, provider.ErrUnsupported
+	}
+	rel, err := filepath.Rel(r.root, c.ID)
+	if err != nil {
+		return nil, err
+	}
+	var out []provider.Attr
+	meta, isSops := readMeta(c.ID)
+	if isSops {
+		out = append(out, provider.Attr{Label: "encryption", Value: "sops · " + strings.Join(meta.methods, ", ")})
+		for i, k := range meta.recipients {
+			label := ""
+			if i == 0 {
+				label = "keys"
+			}
+			out = append(out, provider.Attr{Label: label, Value: k})
+		}
+		if !meta.modified.IsZero() {
+			out = append(out, provider.Attr{Label: "encrypted", Value: meta.modified.Local().Format("2006-01-02 15:04")})
+		}
+	} else {
+		out = append(out, provider.Attr{Label: "encryption", Value: "none: plain text"})
+	}
+
+	git := func(args ...string) (string, bool) {
+		b, err := exec.CommandContext(ctx, "git", append([]string{"-C", r.root}, args...)...).Output()
+		return strings.TrimSpace(string(b)), err == nil
+	}
+	switch _, tracked := git("ls-files", "--error-unmatch", "--", rel); {
+	case tracked && !isSops:
+		out = append(out, provider.Attr{Label: "git", Value: "tracked: its values are in the repo's history", Warn: true})
+	case tracked:
+		out = append(out, provider.Attr{Label: "git", Value: "tracked"})
+	default:
+		if _, ignored := git("check-ignore", "-q", "--", rel); ignored {
+			out = append(out, provider.Attr{Label: "git", Value: "ignored"})
+		} else {
+			out = append(out, provider.Attr{Label: "git", Value: "untracked and not ignored: easy to commit by mistake", Warn: !isSops})
+		}
+		return out, nil
+	}
+	if last, ok := git("log", "-1", "--format=%h · %ar · %an: %s", "--", rel); ok && last != "" {
+		out = append(out, provider.Attr{Label: "last commit", Value: last})
+	}
+	return out, nil
+}

internal/provider/repo/repo.go

@@ -815,8 +815,30 @@ func anyMatch(res []*regexp.Regexp, f string) bool {
 // --- sops files ---
 
 type sopsMeta struct {
-	methods  []string // age, azure_kv, …
-	modified time.Time
+	methods    []string // age, azure_kv, …
+	recipients []string // "age age1…", "azure_kv https://kv…/keys/sops"
+	modified   time.Time
+}
+
+// recipient names a key a file is encrypted for, from its sops metadata:
+// public, never a secret.
+func recipient(method string, f map[string]string) string {
+	var v string
+	switch method {
+	case "age":
+		v = f["recipient"]
+	case "pgp":
+		v = f["fp"]
+	case "kms":
+		v = f["arn"]
+	case "gcp_kms":
+		v = f["resource_id"]
+	case "azure_kv":
+		v = strings.TrimSuffix(f["vault_url"], "/") + "/keys/" + f["name"]
+	case "hc_vault":
+		v = strings.TrimSuffix(f["vault_address"], "/") + " " + f["engine_path"] + "/" + f["key_name"]
+	}
+	return method + " " + v
 }
 
 const maxFileSize = 4 << 20
@@ -848,6 +870,15 @@ func readMeta(file string) (sopsMeta, bool) {
 		for _, k := range known {
 			if v, ok := doc.Sops[k].([]any); ok && len(v) > 0 {
 				m.methods = append(m.methods, k)
+				for _, e := range v {
+					fields := map[string]string{}
+					if em, ok := e.(map[string]any); ok {
+						for fk, fv := range em {
+							fields[fk] = fmt.Sprint(fv)
+						}
+					}
+					m.recipients = append(m.recipients, recipient(k, fields))
+				}
 			}
 		}
 		if s, ok := doc.Sops["lastmodified"].(string); ok {
@@ -864,6 +895,7 @@ func readMeta(file string) (sopsMeta, bool) {
 		for _, k := range known {
 			if strings.Contains(text, "sops_"+k+"__") {
 				m.methods = append(m.methods, k)
+				m.recipients = append(m.recipients, envRecipients(text, k)...)
 			}
 		}
 		if i := strings.Index(text, "sops_lastmodified"); i >= 0 {
@@ -881,6 +913,35 @@ func readMeta(file string) (sopsMeta, bool) {
 	return m, true
 }
 
+// envRecipients are method's keys in a dotenv or ini sops file, whose
+// metadata is flattened: sops_age__list_0__map_recipient=age1….
+func envRecipients(text, method string) []string {
+	prefix := "sops_" + method + "__list_"
+	var order []string
+	keys := map[string]map[string]string{}
+	for line := range strings.Lines(text) {
+		k, v, ok := strings.Cut(strings.TrimSpace(line), "=")
+		rest, found := strings.CutPrefix(strings.TrimSpace(k), prefix)
+		if !ok || !found {
+			continue
+		}
+		n, field, ok := strings.Cut(rest, "__map_")
+		if !ok {
+			continue
+		}
+		if keys[n] == nil {
+			keys[n] = map[string]string{}
+			order = append(order, n)
+		}
+		keys[n][field] = strings.TrimSpace(v)
+	}
+	out := make([]string, len(order))
+	for i, n := range order {
+		out[i] = recipient(method, keys[n])
+	}
+	return out
+}
+
 func formatOf(file string) string {
 	switch strings.ToLower(filepath.Ext(file)) {
 	case ".yaml", ".yml":

internal/provider/repo/repo_test.go

@@ -477,3 +477,47 @@ func TestFile(t *testing.T) {
 		t.Errorf("lines %v\nwant  %v", lines, want)
 	}
 }
+
+func TestFileDetails(t *testing.T) {
+	root := gitRepo(t, map[string]string{
+		".gitignore":       ".env\n",
+		"secrets/app.yaml": sopsYAML,
+		"prod.env":         sopsEnv,
+		"tracked.env":      "TOKEN=x\n", // a plain .env in git: worth a look
+	})
+	os.WriteFile(filepath.Join(root, ".env"), []byte("TOKEN=x\n"), 0o600)
+	os.WriteFile(filepath.Join(root, "local.env"), []byte("TOKEN=x\n"), 0o600)
+	p := New(Settings{Dir: root})
+	ctx := context.Background()
+	srcs, _ := p.Sources(ctx)
+	details := func(name string) map[string]provider.Attr {
+		t.Helper()
+		attrs, err := p.Details(ctx, provider.Container{Source: srcs[0], ID: filepath.Join(root, name), Name: name})
+		if err != nil {
+			t.Fatal(err)
+		}
+		out := map[string]provider.Attr{}
+		for _, a := range attrs {
+			out[a.Label] = a
+		}
+		return out
+	}
+
+	d := details("secrets/app.yaml")
+	if d["encryption"].Value != "sops · age" || d["keys"].Value != "age age1xxxx" || d["git"].Value != "tracked" ||
+		!strings.Contains(d["last commit"].Value, "t: files") || d["encrypted"].Value == "" {
+		t.Errorf("sops yaml: %+v", d)
+	}
+	if d := details("prod.env"); d["keys"].Value != "age age1xxxx" {
+		t.Errorf("sops env: %+v", d)
+	}
+	if d := details("tracked.env"); d["encryption"].Value != "none: plain text" || !d["git"].Warn {
+		t.Errorf("tracked plain env: %+v", d)
+	}
+	if d := details(".env"); d["git"].Value != "ignored" || d["git"].Warn {
+		t.Errorf("ignored env: %+v", d)
+	}
+	if d := details("local.env"); !d["git"].Warn || !strings.Contains(d["git"].Value, "not ignored") {
+		t.Errorf("untracked env: %+v", d)
+	}
+}

internal/ui/app/app.go

@@ -177,6 +177,7 @@ type Model struct {
 	fields   panes.Fields
 	lastLeft pane
 	groups   map[string]groupsState
+	details  map[string]detailsState // by containerKey
 	getenv   func(string) string
 	nvimOpen func(server, path string, line int) error // edit.go
 	now      func() time.Time
@@ -376,6 +377,7 @@ func New(providers []provider.Provider, opts Options) Model {
 		nvimOpen:      nvimOpen,
 		cache:         newCache(),
 		groups:        map[string]groupsState{},
+		details:       map[string]detailsState{},
 		fields:        panes.NewFields(),
 	}
 	if m.clip == nil {
@@ -588,6 +590,9 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case groupsMsg:
 		m.groups[msg.provider] = groupsState{names: msg.names, err: msg.err}
 
+	case detailsMsg:
+		m.details[msg.key] = detailsState{attrs: msg.attrs, err: msg.err}
+
 	case crawlMsg:
 		cmds = append(cmds, m.handleCrawl(msg))
 
@@ -1032,6 +1037,7 @@ func (m *Model) refresh() tea.Cmd {
 	case paneContainers:
 		if src, ok := m.selectedSource(); ok {
 			m.containers.Refresh()
+			m.details = map[string]detailsState{}
 			return m.loadContainers(src, m.selSource)
 		}
 	case paneSecrets:

internal/ui/app/app_test.go

@@ -1236,3 +1236,22 @@ func TestStatusPane(t *testing.T) {
 		t.Errorf("back to %v", d.m.focus)
 	}
 }
+
+// detailed is an account whose vaults have details.
+type detailed struct{ provider.Provider }
+
+func (detailed) Details(_ context.Context, c provider.Container) ([]provider.Attr, error) {
+	return []provider.Attr{{Label: "access", Value: "Azure roles (RBAC)"}, {Label: "git", Value: "tracked", Warn: true}}, nil
+}
+
+func TestContainerDetails(t *testing.T) {
+	t.Parallel()
+	d := newDriverOpts(t, Options{}, detailed{fake.Azure(0)})
+	d.keys("2")
+	if scr := d.screen(); !strings.Contains(scr, "access     Azure roles (RBAC)") || !strings.Contains(scr, "URI") {
+		t.Errorf("details:\n%s", scr)
+	}
+	if st := d.m.details[d.m.containers.SelectedID()]; st.loading || len(st.attrs) != 2 {
+		t.Errorf("state %+v", st)
+	}
+}

internal/ui/app/fields.go

@@ -29,6 +29,20 @@ type groupsMsg struct {
 	err      error
 }
 
+// A vault's, scope's or file's details beyond its listing load once a
+// session, the first time it's shown, and again with refresh.
+type detailsState struct {
+	attrs   []provider.Attr
+	err     error
+	loading bool
+}
+
+type detailsMsg struct {
+	key   string
+	attrs []provider.Attr
+	err   error
+}
+
 // detailOf is the pane the fourth pane describes: the one in focus, or,
 // with the fourth in focus, the one it was entered from.
 func (m Model) detailOf() pane {
@@ -68,7 +82,9 @@ func (m *Model) syncFields() tea.Cmd {
 		m.fields.Show("lazysecrets", m.statusFields())
 	case paneContainers:
 		if c, ok := m.containers.Selected(); ok {
+			cmd := m.loadDetails(c)
 			m.fields.Show(c.Name, m.containerFields(c))
+			return cmd
 		} else {
 			m.fields.Show("", nil)
 		}
@@ -171,9 +187,37 @@ func (m Model) containerFields(c provider.Container) []panes.Field {
 			add(strings.ToLower(string(t))+"s", fmt.Sprint(len(e.value)))
 		}
 	}
+	switch st := m.details[containerKey(c)]; {
+	case st.loading:
+		out = append(out, panes.Field{Label: "details", Value: "loading…", Info: true})
+	case errors.Is(st.err, provider.ErrUnsupported):
+	case st.err != nil:
+		out = append(out, panes.Field{Label: "details", Value: "couldn't load them: " + st.err.Error(), Info: true, Err: true})
+	}
+	for _, a := range m.details[containerKey(c)].attrs {
+		out = append(out, panes.Field{Label: a.Label, Value: a.Value, Err: a.Warn})
+	}
 	return out
 }
 
+// loadDetails loads c's details, if its provider has them and they
+// aren't loaded yet.
+func (m *Model) loadDetails(c provider.Container) tea.Cmd {
+	d, ok := m.providerFor(c.Source).(provider.ContainerDetails)
+	key := containerKey(c)
+	if _, seen := m.details[key]; !ok || seen {
+		return nil
+	}
+	m.details[key] = detailsState{loading: true}
+	timeout := m.timeout
+	return func() tea.Msg {
+		ctx, cancel := context.WithTimeout(context.Background(), timeout)
+		defer cancel()
+		attrs, err := d.Details(ctx, c)
+		return detailsMsg{key: key, attrs: attrs, err: err}
+	}
+}
+
 // problemFields show why an account has nothing to show, wrapped to the
 // pane, in red.
 func (m Model) problemFields(problem string) []panes.Field {