| 1 | package agent |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "sort" |
| 7 | "strings" |
| 8 | "unicode" |
| 9 | |
| 10 | "reasonix/internal/capability" |
| 11 | "reasonix/internal/plugin" |
| 12 | "reasonix/internal/tool" |
| 13 | ) |
| 14 | |
| 15 | type capabilitySearchResult struct { |
| 16 | CapabilityID string `json:"capability_id"` |
| 17 | Kind string `json:"kind"` |
| 18 | Name string `json:"name"` |
| 19 | Description string `json:"description,omitempty"` |
| 20 | Status string `json:"status,omitempty"` |
| 21 | ReadOnly bool `json:"read_only"` |
| 22 | Arguments []string `json:"argument_names,omitempty"` |
| 23 | UnavailableReason string `json:"unavailable_reason,omitempty"` |
| 24 | score int |
| 25 | } |
| 26 | |
| 27 | // searchCapabilities ranks the in-memory catalog and schema cache only. It is |
| 28 | // deliberately incapable of starting an MCP server or issuing tools/list. |
| 29 | func (t *UseCapabilityTool) searchCapabilities(ctx context.Context, query string, limit int) (string, int, error) { |
| 30 | if limit == 0 { |
| 31 | limit = 5 |
| 32 | } |
| 33 | query = strings.TrimSpace(query) |
| 34 | queryNorm := normalizeSearchText(query) |
| 35 | queryTokens := searchTokens(query) |
| 36 | cat := t.currentCatalog() |
| 37 | mcpSchemas := t.mcpSearchSchemaIndex() |
| 38 | results := make([]capabilitySearchResult, 0, len(cat.Entries)) |
| 39 | for _, entry := range cat.Entries { |
| 40 | entry = t.contextualEntry(ctx, entry) |
| 41 | unavailableReason := "" |
| 42 | if entry.Kind == capability.KindTool { |
| 43 | unavailableReason = entry.FailureReason |
| 44 | } |
| 45 | arguments, schemaText := t.capabilitySchemaSearchData(entry, mcpSchemas) |
| 46 | document := strings.Join([]string{entry.ID, entry.Name, entry.Source, entry.ToolName, entry.Description, schemaText}, " ") |
| 47 | score := capabilitySearchScore(entry, document, queryNorm, queryTokens) |
| 48 | if score == 0 { |
| 49 | continue |
| 50 | } |
| 51 | results = append(results, capabilitySearchResult{ |
| 52 | CapabilityID: entry.ID, |
| 53 | Kind: string(entry.Kind), |
| 54 | Name: entry.Name, |
| 55 | Description: truncateSearchDescription(entry.Description), |
| 56 | Status: string(entry.Status), |
| 57 | ReadOnly: entry.ReadOnly, |
| 58 | Arguments: arguments, |
| 59 | UnavailableReason: unavailableReason, |
| 60 | score: score, |
| 61 | }) |
| 62 | } |
| 63 | sort.Slice(results, func(i, j int) bool { |
| 64 | if results[i].score != results[j].score { |
| 65 | return results[i].score > results[j].score |
| 66 | } |
| 67 | return results[i].CapabilityID < results[j].CapabilityID |
| 68 | }) |
| 69 | total := len(results) |
| 70 | if total > limit { |
| 71 | results = results[:limit] |
| 72 | } |
| 73 | payload := struct { |
| 74 | Query string `json:"query"` |
| 75 | Results []capabilitySearchResult `json:"results"` |
| 76 | CatalogVersion string `json:"catalog_version"` |
| 77 | Truncated bool `json:"truncated"` |
| 78 | SnapshotStale bool `json:"snapshot_stale"` |
| 79 | Incomplete bool `json:"incomplete"` |
| 80 | Note string `json:"note"` |
| 81 | }{ |
| 82 | Query: query, Results: results, CatalogVersion: cat.Fingerprint, |
| 83 | Truncated: total > len(results), SnapshotStale: cat.Stale, Incomplete: cat.Incomplete, |
| 84 | Note: "Local catalog search only; no MCP process, network request, or tools/list call was made. Inspect one exact capability_id before calling when its argument contract is unfamiliar.", |
| 85 | } |
| 86 | b, err := json.MarshalIndent(payload, "", " ") |
| 87 | return string(b), len(results), err |
| 88 | } |
| 89 | |
| 90 | func capabilitySearchScore(entry capability.Entry, document, queryNorm string, queryTokens []string) int { |
| 91 | id := normalizeSearchText(entry.ID) |
| 92 | name := normalizeSearchText(entry.Name) |
| 93 | doc := normalizeSearchText(document) |
| 94 | score := 0 |
| 95 | switch { |
| 96 | case id == queryNorm: |
| 97 | score += 10000 |
| 98 | case name == queryNorm: |
| 99 | score += 8000 |
| 100 | case strings.Contains(id, queryNorm): |
| 101 | score += 3000 |
| 102 | case strings.Contains(name, queryNorm): |
| 103 | score += 2000 |
| 104 | case strings.Contains(doc, queryNorm): |
| 105 | score += 1000 |
| 106 | } |
| 107 | for _, token := range queryTokens { |
| 108 | if token == "" { |
| 109 | continue |
| 110 | } |
| 111 | switch { |
| 112 | case containsSearchToken(id, token): |
| 113 | score += 300 |
| 114 | case containsSearchToken(name, token): |
| 115 | score += 200 |
| 116 | case containsSearchToken(doc, token): |
| 117 | score += 80 |
| 118 | } |
| 119 | } |
| 120 | return score |
| 121 | } |
| 122 | |
| 123 | func (t *UseCapabilityTool) capabilitySchemaSearchData(entry capability.Entry, mcpSchemas map[string]plugin.CachedTool) ([]string, string) { |
| 124 | var schema json.RawMessage |
| 125 | if entry.Kind == capability.KindMCPTool { |
| 126 | server, raw, err := parseMCPCapabilityID(entry.ID) |
| 127 | if err == nil { |
| 128 | if cached, ok := mcpSchemas[server+"\x00"+raw]; ok { |
| 129 | schema = cached.Schema |
| 130 | } |
| 131 | } |
| 132 | } else if strings.HasPrefix(entry.ID, "skill:") { |
| 133 | if contract, ok := capabilityArgumentContract(entry); ok { |
| 134 | schema = contract.Schema |
| 135 | } |
| 136 | } else if t.registry != nil { |
| 137 | name := strings.TrimSpace(entry.ToolName) |
| 138 | if name == "" { |
| 139 | name = strings.TrimSpace(strings.TrimPrefix(entry.ID, "tool:")) |
| 140 | } |
| 141 | if target, ok := t.registry.Get(name); ok { |
| 142 | schema = target.Schema() |
| 143 | } |
| 144 | } |
| 145 | return schemaSearchData(schema) |
| 146 | } |
| 147 | |
| 148 | // mcpSearchSchemaIndex takes one local snapshot per search. The old per-entry |
| 149 | // localMCPTool path deep-copied the whole runtime catalog for every MCP tool, |
| 150 | // making a large 88KB catalog quadratic even though discovery is local-only. |
| 151 | func (t *UseCapabilityTool) mcpSearchSchemaIndex() map[string]plugin.CachedTool { |
| 152 | index := map[string]plugin.CachedTool{} |
| 153 | add := func(server string, tools []plugin.CachedTool) { |
| 154 | for _, cached := range tools { |
| 155 | key := server + "\x00" + cached.Name |
| 156 | if _, exists := index[key]; !exists { |
| 157 | index[key] = cached |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | if t.runtime != nil { |
| 162 | _, cached, _, _, live := t.runtime.CapabilityCatalogState() |
| 163 | for server, tools := range live { |
| 164 | add(server, tools) |
| 165 | } |
| 166 | for server, tools := range cached { |
| 167 | add(server, tools) |
| 168 | } |
| 169 | } else { |
| 170 | for server, tools := range t.ensureState().snapshotLiveTools() { |
| 171 | add(server, tools) |
| 172 | } |
| 173 | if t.host != nil { |
| 174 | for _, spec := range t.specs { |
| 175 | if live, ok := t.host.CachedTools(spec.Name); ok { |
| 176 | add(spec.Name, snapshotMCPTools(live)) |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | for _, spec := range t.specs { |
| 181 | if cached, ok := plugin.LoadCachedSchemaForSpecProfile(spec, t.hostProfileFor()); ok { |
| 182 | add(spec.Name, cached.Tools) |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | if t.registry != nil { |
| 187 | for _, name := range t.registry.AllNames() { |
| 188 | target, ok := t.registry.Get(name) |
| 189 | if !ok { |
| 190 | continue |
| 191 | } |
| 192 | metadata, ok := target.(tool.MCPMetadata) |
| 193 | if !ok { |
| 194 | continue |
| 195 | } |
| 196 | add(metadata.MCPServerName(), []plugin.CachedTool{{ |
| 197 | Name: metadata.MCPRawToolName(), Description: target.Description(), |
| 198 | Schema: target.Schema(), ReadOnly: target.ReadOnly(), |
| 199 | }}) |
| 200 | } |
| 201 | } |
| 202 | return index |
| 203 | } |
| 204 | |
| 205 | func schemaSearchData(raw json.RawMessage) ([]string, string) { |
| 206 | var root struct { |
| 207 | Properties map[string]struct { |
| 208 | Type any `json:"type"` |
| 209 | Description string `json:"description"` |
| 210 | } `json:"properties"` |
| 211 | } |
| 212 | if json.Unmarshal(raw, &root) != nil || len(root.Properties) == 0 { |
| 213 | return nil, "" |
| 214 | } |
| 215 | names := make([]string, 0, len(root.Properties)) |
| 216 | parts := make([]string, 0, len(root.Properties)) |
| 217 | for name := range root.Properties { |
| 218 | names = append(names, name) |
| 219 | } |
| 220 | sort.Strings(names) |
| 221 | for _, name := range names { |
| 222 | property := root.Properties[name] |
| 223 | parts = append(parts, name+" "+property.Description) |
| 224 | } |
| 225 | return names, strings.Join(parts, " ") |
| 226 | } |
| 227 | |
| 228 | func capabilityArgumentContract(entry capability.Entry) (tool.CapabilityArgumentContract, bool) { |
| 229 | if entry.Kind != capability.KindSkill || !strings.HasPrefix(entry.ID, "skill:") { |
| 230 | return tool.CapabilityArgumentContract{}, false |
| 231 | } |
| 232 | required := "" |
| 233 | if entry.SkillRunAs == "subagent" { |
| 234 | required = `,"required":["arguments"]` |
| 235 | } |
| 236 | schema := json.RawMessage(`{"type":"object","properties":{"arguments":{"type":"string","description":"Concrete task or inline skill arguments."},"continue_from":{"type":"string","description":"Optional compatible subagent reference."}}` + required + `}`) |
| 237 | example, _ := json.Marshal(map[string]any{ |
| 238 | "action": "call", "capability_id": entry.ID, |
| 239 | "arguments": map[string]any{"arguments": "specific task for " + entry.Name}, |
| 240 | }) |
| 241 | return tool.CapabilityArgumentContract{Schema: schema, Example: example}, true |
| 242 | } |
| 243 | |
| 244 | // localMCPTools returns live/shared-host metadata first, then the already |
| 245 | // registered adapter, then disk/schema cache metadata. It performs no remote |
| 246 | // calls and never starts a server. |
| 247 | func (t *UseCapabilityTool) localMCPTools(server string) ([]plugin.CachedTool, string) { |
| 248 | if t.runtime != nil { |
| 249 | _, cached, _, _, live := t.runtime.CapabilityCatalogState() |
| 250 | if tools := live[server]; len(tools) > 0 { |
| 251 | return cloneCachedTools(tools), "shared_host" |
| 252 | } |
| 253 | if tools := cached[server]; len(tools) > 0 { |
| 254 | return cloneCachedTools(tools), "disk_cache" |
| 255 | } |
| 256 | } else if tools := t.ensureState().snapshotLiveTools()[server]; len(tools) > 0 { |
| 257 | return cloneCachedTools(tools), "shared_host" |
| 258 | } else if t.host != nil { |
| 259 | if live, ok := t.host.CachedTools(server); ok && len(live) > 0 { |
| 260 | cached := snapshotMCPTools(live) |
| 261 | t.ensureState().setLiveTools(server, cached) |
| 262 | return cloneCachedTools(cached), "shared_host" |
| 263 | } |
| 264 | } |
| 265 | if t.registry != nil { |
| 266 | var registered []plugin.CachedTool |
| 267 | for _, name := range t.registry.AllNames() { |
| 268 | target, ok := t.registry.Get(name) |
| 269 | if !ok { |
| 270 | continue |
| 271 | } |
| 272 | metadata, ok := target.(tool.MCPMetadata) |
| 273 | if !ok || metadata.MCPServerName() != server { |
| 274 | continue |
| 275 | } |
| 276 | registered = append(registered, plugin.CachedTool{ |
| 277 | Name: metadata.MCPRawToolName(), |
| 278 | Description: target.Description(), |
| 279 | Schema: target.Schema(), |
| 280 | ReadOnly: target.ReadOnly(), |
| 281 | }) |
| 282 | } |
| 283 | if len(registered) > 0 { |
| 284 | sort.Slice(registered, func(i, j int) bool { return registered[i].Name < registered[j].Name }) |
| 285 | return registered, "shared_host" |
| 286 | } |
| 287 | } |
| 288 | if spec, ok := t.specFor(server); ok { |
| 289 | if cached, ok := plugin.LoadCachedSchemaForSpecProfile(spec, t.hostProfileFor()); ok && len(cached.Tools) > 0 { |
| 290 | return cloneCachedTools(cached.Tools), "disk_cache" |
| 291 | } |
| 292 | } |
| 293 | return nil, "" |
| 294 | } |
| 295 | |
| 296 | func (t *UseCapabilityTool) localMCPTool(server, raw string) (plugin.CachedTool, string, bool) { |
| 297 | tools, source := t.localMCPTools(server) |
| 298 | for _, candidate := range tools { |
| 299 | if candidate.Name == raw { |
| 300 | return candidate, source, true |
| 301 | } |
| 302 | } |
| 303 | return plugin.CachedTool{}, source, false |
| 304 | } |
| 305 | |
| 306 | func searchTokens(value string) []string { |
| 307 | normalized := normalizeSearchText(value) |
| 308 | if normalized == "" { |
| 309 | return nil |
| 310 | } |
| 311 | return strings.Fields(normalized) |
| 312 | } |
| 313 | |
| 314 | func normalizeSearchText(value string) string { |
| 315 | var b strings.Builder |
| 316 | var previous rune |
| 317 | for i, r := range value { |
| 318 | if i > 0 && unicode.IsUpper(r) && (unicode.IsLower(previous) || unicode.IsDigit(previous)) { |
| 319 | b.WriteByte(' ') |
| 320 | } |
| 321 | if unicode.IsLetter(r) || unicode.IsDigit(r) { |
| 322 | b.WriteRune(unicode.ToLower(r)) |
| 323 | } else { |
| 324 | b.WriteByte(' ') |
| 325 | } |
| 326 | previous = r |
| 327 | } |
| 328 | return strings.Join(strings.Fields(b.String()), " ") |
| 329 | } |
| 330 | |
| 331 | func containsSearchToken(document, token string) bool { |
| 332 | for candidate := range strings.FieldsSeq(document) { |
| 333 | if candidate == token || strings.Contains(candidate, token) { |
| 334 | return true |
| 335 | } |
| 336 | } |
| 337 | return false |
| 338 | } |
| 339 | |
| 340 | func truncateSearchDescription(value string) string { |
| 341 | value = strings.TrimSpace(value) |
| 342 | if len(value) <= 240 { |
| 343 | return value |
| 344 | } |
| 345 | return value[:237] + "..." |
| 346 | } |
| 347 |