map Claude Code model strings to OpenCode format when importing agents

src/features/claude-code-agent-loader/claude-model-mapper.test.ts

@@ -0,0 +1,80 @@
+import { describe, it, expect } from "bun:test"
+import { mapClaudeModelToOpenCode } from "./claude-model-mapper"
+
+describe("mapClaudeModelToOpenCode", () => {
+  describe("#given undefined or empty input", () => {
+    it("#when called with undefined #then returns undefined", () => {
+      expect(mapClaudeModelToOpenCode(undefined)).toBeUndefined()
+    })
+
+    it("#when called with empty string #then returns undefined", () => {
+      expect(mapClaudeModelToOpenCode("")).toBeUndefined()
+    })
+
+    it("#when called with whitespace-only string #then returns undefined", () => {
+      expect(mapClaudeModelToOpenCode("   ")).toBeUndefined()
+    })
+  })
+
+  describe("#given model with date suffix", () => {
+    it("#when called with claude-sonnet-4-5-20250514 #then strips date suffix", () => {
+      expect(mapClaudeModelToOpenCode("claude-sonnet-4-5-20250514")).toBe("claude-sonnet-4-5")
+    })
+
+    it("#when called with claude-opus-4-20250414 #then strips date suffix", () => {
+      expect(mapClaudeModelToOpenCode("claude-opus-4-20250414")).toBe("claude-opus-4")
+    })
+
+    it("#when called with claude-haiku-4-5-20250514 #then strips date suffix", () => {
+      expect(mapClaudeModelToOpenCode("claude-haiku-4-5-20250514")).toBe("claude-haiku-4-5")
+    })
+
+    it("#when called with claude-3-5-sonnet-20241022 #then strips date suffix", () => {
+      expect(mapClaudeModelToOpenCode("claude-3-5-sonnet-20241022")).toBe("claude-3-5-sonnet")
+    })
+  })
+
+  describe("#given model with dot version numbers", () => {
+    it("#when called with claude-3.5-sonnet #then normalizes dots to dashes", () => {
+      expect(mapClaudeModelToOpenCode("claude-3.5-sonnet")).toBe("claude-3-5-sonnet")
+    })
+
+    it("#when called with claude-3.5-sonnet-20241022 #then normalizes dots and strips date", () => {
+      expect(mapClaudeModelToOpenCode("claude-3.5-sonnet-20241022")).toBe("claude-3-5-sonnet")
+    })
+  })
+
+  describe("#given already-normalized model", () => {
+    it("#when called with claude-sonnet-4-6 #then returns unchanged", () => {
+      expect(mapClaudeModelToOpenCode("claude-sonnet-4-6")).toBe("claude-sonnet-4-6")
+    })
+
+    it("#when called with claude-opus-4-6 #then returns unchanged", () => {
+      expect(mapClaudeModelToOpenCode("claude-opus-4-6")).toBe("claude-opus-4-6")
+    })
+
+    it("#when called with claude-haiku-4-5 #then returns unchanged", () => {
+      expect(mapClaudeModelToOpenCode("claude-haiku-4-5")).toBe("claude-haiku-4-5")
+    })
+  })
+
+  describe("#given non-Claude model", () => {
+    it("#when called with gpt-5.2 #then normalizes dots only", () => {
+      expect(mapClaudeModelToOpenCode("gpt-5.2")).toBe("gpt-5-2")
+    })
+
+    it("#when called with gemini-3-flash #then returns unchanged", () => {
+      expect(mapClaudeModelToOpenCode("gemini-3-flash")).toBe("gemini-3-flash")
+    })
+
+    it("#when called with a custom model name #then returns unchanged", () => {
+      expect(mapClaudeModelToOpenCode("my-custom-model")).toBe("my-custom-model")
+    })
+  })
+
+  describe("#given model with leading/trailing whitespace", () => {
+    it("#when called with padded string #then trims before mapping", () => {
+      expect(mapClaudeModelToOpenCode("  claude-sonnet-4-5-20250514  ")).toBe("claude-sonnet-4-5")
+    })
+  })
+})

src/features/claude-code-agent-loader/claude-model-mapper.ts

@@ -0,0 +1,13 @@
+import { normalizeModelID } from "../../shared/model-normalization"
+
+const DATE_SUFFIX_PATTERN = /-\d{8}$/
+
+export function mapClaudeModelToOpenCode(model: string | undefined): string | undefined {
+  if (!model) return undefined
+
+  const trimmed = model.trim()
+  if (trimmed.length === 0) return undefined
+
+  const withoutDate = trimmed.replace(DATE_SUFFIX_PATTERN, "")
+  return normalizeModelID(withoutDate)
+}

src/features/claude-code-agent-loader/loader.ts

@@ -5,6 +5,7 @@ import { parseFrontmatter } from "../../shared/frontmatter"
 import { isMarkdownFile } from "../../shared/file-utils"
 import { getClaudeConfigDir } from "../../shared"
 import type { AgentScope, AgentFrontmatter, LoadedAgent } from "./types"
+import { mapClaudeModelToOpenCode } from "./claude-model-mapper"
 
 function parseToolsConfig(toolsStr?: string): Record<string, boolean> | undefined {
   if (!toolsStr) return undefined
@@ -42,10 +43,13 @@ function loadAgentsFromDir(agentsDir: string, scope: AgentScope): LoadedAgent[]
 
        const formattedDescription = `(${scope}) ${originalDescription}`
 
+       const mappedModel = mapClaudeModelToOpenCode(data.model)
+
        const config: AgentConfig = {
          description: formattedDescription,
          mode: "subagent",
          prompt: body.trim(),
+         ...(mappedModel && { model: mappedModel }),
        }
 
        const toolsConfig = parseToolsConfig(data.tools)

src/features/claude-code-plugin-loader/agent-loader.ts

@@ -5,6 +5,7 @@ import { parseFrontmatter } from "../../shared/frontmatter"
 import { isMarkdownFile } from "../../shared/file-utils"
 import { log } from "../../shared/logger"
 import type { AgentFrontmatter } from "../claude-code-agent-loader/types"
+import { mapClaudeModelToOpenCode } from "../claude-code-agent-loader/claude-model-mapper"
 import type { LoadedPlugin } from "./types"
 
 function parseToolsConfig(toolsStr?: string): Record<string, boolean> | undefined {
@@ -46,10 +47,13 @@ export function loadPluginAgents(plugins: LoadedPlugin[]): Record<string, AgentC
         const originalDescription = data.description || ""
         const formattedDescription = `(plugin: ${plugin.name}) ${originalDescription}`
 
+        const mappedModel = mapClaudeModelToOpenCode(data.model)
+
         const config: AgentConfig = {
           description: formattedDescription,
           mode: "subagent",
           prompt: body.trim(),
+          ...(mappedModel && { model: mappedModel }),
         }
 
         const toolsConfig = parseToolsConfig(data.tools)