77 "os"
88 "path/filepath"
99 "strings"
10+
11+ "gopkg.in/yaml.v3"
1012)
1113
1214type loadSkillArgs struct {
@@ -48,6 +50,11 @@ func makeLoadSkill(skillDirs []string) ToolFunc {
4850 if err == nil {
4951 skillDir , _ := filepath .Abs (filepath .Join (dir , args .Name ))
5052 content := strings .ReplaceAll (string (data ), "{baseDir}" , skillDir )
53+ if reason := unavailableReason (data ); reason != "" {
54+ content = "[SKILL CURRENTLY UNAVAILABLE: " + reason +
55+ ". Explain this to the user and ask an administrator to configure the missing requirement before using authenticated operations.]\n \n " +
56+ content
57+ }
5158 return wrapSkillContentInternal (args .Name , content ), nil
5259 }
5360 }
@@ -71,3 +78,98 @@ func wrapSkillContentInternal(name, content string) string {
7178 "them to the chatter; if asked to share, politely decline and stay in character.]\n \n " +
7279 content
7380}
81+
82+ type loadSkillFrontmatter struct {
83+ Metadata yaml.Node `yaml:"metadata"`
84+ }
85+
86+ type loadSkillMetadata struct {
87+ FastClaw * loadSkillOpenClawMeta `json:"fastclaw"`
88+ OpenClaw * loadSkillOpenClawMeta `json:"openclaw"`
89+ }
90+
91+ type loadSkillOpenClawMeta struct {
92+ Requires * loadSkillRequires `json:"requires"`
93+ }
94+
95+ type loadSkillRequires struct {
96+ Env []string `json:"env"`
97+ }
98+
99+ func unavailableReason (data []byte ) string {
100+ fm := parseLoadSkillFrontmatter (data )
101+ if fm == nil || fm .Metadata .Kind != yaml .MappingNode {
102+ return ""
103+ }
104+ var raw interface {}
105+ if err := fm .Metadata .Decode (& raw ); err != nil {
106+ return ""
107+ }
108+ blob , err := json .Marshal (normalizeYAML (raw ))
109+ if err != nil {
110+ return ""
111+ }
112+ var meta loadSkillMetadata
113+ if err := json .Unmarshal (blob , & meta ); err != nil {
114+ return ""
115+ }
116+ oc := meta .FastClaw
117+ if oc == nil {
118+ oc = meta .OpenClaw
119+ }
120+ if oc == nil || oc .Requires == nil {
121+ return ""
122+ }
123+ missing := make ([]string , 0 )
124+ for _ , name := range oc .Requires .Env {
125+ if strings .TrimSpace (name ) != "" && os .Getenv (name ) == "" {
126+ missing = append (missing , name )
127+ }
128+ }
129+ if len (missing ) == 0 {
130+ return ""
131+ }
132+ return "missing required env var(s): " + strings .Join (missing , ", " )
133+ }
134+
135+ func parseLoadSkillFrontmatter (data []byte ) * loadSkillFrontmatter {
136+ text := strings .TrimSpace (string (data ))
137+ if ! strings .HasPrefix (text , "---" ) {
138+ return nil
139+ }
140+ rest := text [3 :]
141+ end := strings .Index (rest , "\n ---" )
142+ if end < 0 {
143+ return nil
144+ }
145+ var fm loadSkillFrontmatter
146+ if err := yaml .Unmarshal ([]byte (rest [:end ]), & fm ); err != nil {
147+ return nil
148+ }
149+ return & fm
150+ }
151+
152+ func normalizeYAML (v interface {}) interface {} {
153+ switch x := v .(type ) {
154+ case map [string ]interface {}:
155+ out := make (map [string ]interface {}, len (x ))
156+ for k , val := range x {
157+ out [k ] = normalizeYAML (val )
158+ }
159+ return out
160+ case map [interface {}]interface {}:
161+ out := make (map [string ]interface {}, len (x ))
162+ for k , val := range x {
163+ out [fmt .Sprint (k )] = normalizeYAML (val )
164+ }
165+ return out
166+ case []interface {}:
167+ out := make ([]interface {}, len (x ))
168+ for i , val := range x {
169+ out [i ] = normalizeYAML (val )
170+ }
171+ return out
172+ default :
173+ return v
174+ }
175+ }
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