feat: [AI-7392] humanize tool-call titles at the source

packages/opencode/src/altimate/tool-label.ts

@@ -0,0 +1,89 @@
+/**
+ * Produces a readable, dbt-aware title for a tool call — e.g. "Reading customers
+ * model" instead of a bare file path — so any client (chat webview, TUI, ...) can
+ * render a descriptive label straight from the tool part's `state.title`.
+ *
+ * This is the source of truth for tool-call labels: it runs inside the tool
+ * execute() wrapper (see `tool/tool.ts`) and rewrites the title every tool
+ * returns. Only file-acting tools (whose native title is a bare path) are
+ * rewritten; every other tool keeps the rich title it already emits.
+ *
+ * dbt naming ("model"/"seed"/...) is applied only when the path sits under the
+ * matching directory, so it degrades to the plain filename off-dbt.
+ */
+
+/** File-acting tools whose native title is a bare path → gerund verb. */
+const FILE_TOOL_VERBS: Record<string, string> = {
+  read: "Reading",
+  write: "Writing",
+  edit: "Editing",
+  multiedit: "Editing",
+  glob: "Searching",
+  grep: "Searching",
+  list: "Listing",
+}
+
+/** dbt directory → singular noun used in the label. */
+const DBT_DIR_KIND: Record<string, string> = {
+  models: "model",
+  seeds: "seed",
+  macros: "macro",
+  snapshots: "snapshot",
+  tests: "test",
+  analyses: "analysis",
+  analysis: "analysis",
+}
+
+function asString(value: unknown): string | undefined {
+  return typeof value === "string" && value.trim() ? value : undefined
+}
+
+/**
+ * Turn a file path into a friendly target:
+ *  - under a known dbt dir → "<name> <kind>" with the sql/yaml/csv extension stripped
+ *  - otherwise → the basename, extension kept (e.g. "dbt_project.yml", "index.ts")
+ */
+function friendlyTarget(rawPath: string): string {
+  const segments = rawPath.replace(/\\/g, "/").replace(/^\.\//, "").split("/").filter(Boolean)
+  const base = segments[segments.length - 1] ?? rawPath
+  for (const segment of segments.slice(0, -1)) {
+    const kind = DBT_DIR_KIND[segment.toLowerCase()]
+    if (kind) {
+      const name = base.replace(/\.(sql|ya?ml|csv)$/i, "")
+      return `${name} ${kind}`
+    }
+  }
+  return base
+}
+
+/** Extract the display target for a given file tool from its input args. */
+function fileTarget(tool: string, input: Record<string, unknown>): string | undefined {
+  if (tool === "glob" || tool === "grep") {
+    return asString(input["pattern"])
+  }
+  if (tool === "list") {
+    const path = asString(input["path"])
+    return path ? friendlyTarget(path) : undefined
+  }
+  // read / write / edit / multiedit
+  const filePath = asString(input["filePath"]) ?? asString(input["path"])
+  return filePath ? friendlyTarget(filePath) : undefined
+}
+
+/**
+ * @param tool     the tool id (e.g. "read", "sql_analyze")
+ * @param input    the tool's input args
+ * @param rawTitle the title the tool itself returned (a bare path for file tools,
+ *                 already human-readable for everything else)
+ * @returns a humanized label for file tools, otherwise the tool's own title.
+ */
+export function describeToolCall(tool: string, input: unknown, rawTitle?: string): string | undefined {
+  const fallback = asString(rawTitle)
+  const verb = FILE_TOOL_VERBS[tool]
+  if (verb && input && typeof input === "object") {
+    const target = fileTarget(tool, input as Record<string, unknown>)
+    if (target) return `${verb} ${target}`
+  }
+  // Non-file / rich-title tools: keep the title the tool already emitted.
+  return fallback
+}

packages/opencode/src/altimate/tool-source.ts

@@ -0,0 +1,72 @@
+/**
+ * Authoritative classification of a tool call's origin, stamped onto the tool
+ * part's `state.metadata.source` so clients (chat webview, ...) render the right
+ * badge without re-deriving it from tool-name prefixes.
+ *
+ *  - "builtin"  — native opencode tools (read/glob/bash/...)
+ *  - "altimate" — Altimate-provided tools (sql_*, schema_*, finops_*, ...) AND
+ *                 tools from the Datamates MCP server (Altimate-owned, just
+ *                 delivered over MCP)
+ *  - "mcp"      — third-party MCP tools
+ *
+ * Registry tools and MCP tools are resolved in separate loops (see
+ * `session/prompt.ts` resolveTools), so each has its own classifier.
+ */
+export type ToolSource = "builtin" | "altimate" | "mcp"
+
+/**
+ * Native opencode tool ids. This set is small and stable; every other tool in
+ * the registry is Altimate-provided, so new Altimate tools classify correctly
+ * with no per-tool maintenance here.
+ */
+const NATIVE_TOOL_IDS = new Set<string>([
+  "invalid",
+  "question",
+  "bash",
+  "read",
+  "glob",
+  "grep",
+  "list",
+  "edit",
+  "write",
+  "multiedit",
+  "task",
+  "webfetch",
+  "todowrite",
+  "todoread",
+  "websearch",
+  "codesearch",
+  "skill",
+  "apply_patch",
+  "lsp",
+  "plan_exit",
+  "plan_enter",
+  "StructuredOutput",
+])
+
+/** MCP client-name prefixes that are Altimate-owned (Datamates as an MCP server). */
+const ALTIMATE_MCP_PREFIXES = ["datamate"]
+
+/** Classify a registry tool (never an MCP tool) as builtin vs Altimate. */
+export function registryToolSource(id: string): ToolSource {
+  return NATIVE_TOOL_IDS.has(id) ? "builtin" : "altimate"
+}
+
+/** Classify an MCP tool by its `<client>_<tool>` key: Altimate (Datamates) vs third-party. */
+export function mcpToolSource(key: string): ToolSource {
+  const lower = key.toLowerCase()
+  return ALTIMATE_MCP_PREFIXES.some((p) => lower.startsWith(p)) ? "altimate" : "mcp"
+}
+
+/**
+ * Best-effort readable title for an MCP tool call, from its `<client>_<tool>`
+ * key — e.g. "datamates_jira_get_issue" → "Jira Get Issue". Strips the leading
+ * client segment and Title-Cases the rest. (Richer per-call titles are the MCP
+ * server's job; this is the fallback so MCP rows aren't a bare snake_case id.)
+ */
+export function humanizeMcpTitle(key: string): string {
+  const withoutClient = key.includes("_") ? key.slice(key.indexOf("_") + 1) : key
+  const words = (withoutClient || key).split(/[_-]+/).filter(Boolean)
+  if (words.length === 0) return key
+  return words.map((w) => w.charAt(0).toUpperCase() + w.slice(1)).join(" ")
+}

packages/opencode/src/session/prompt.ts

@@ -65,6 +65,8 @@ import { registerAltimateValidators } from "../altimate/validators"
 registerAltimateValidators()
 import { Config } from "../config/config"
 import { Tracer } from "../altimate/observability/tracing"
+// altimate_change — stamp an authoritative tool source + humanized MCP title
+import { registryToolSource, mcpToolSource, humanizeMcpTitle } from "../altimate/tool-source"
 // altimate_change end
 import { Telemetry } from "@/telemetry" // altimate_change — session telemetry
 
@@ -1564,6 +1566,8 @@ export namespace SessionPrompt {
               messageID: input.processor.message.id,
             })),
           }
+          // altimate_change — stamp authoritative tool source so clients render the right badge
+          output.metadata = { ...(output.metadata ?? {}), source: registryToolSource(item.id) }
           await Plugin.trigger(
             "tool.execute.after",
             {
@@ -1655,10 +1659,13 @@ export namespace SessionPrompt {
           ...(result.metadata ?? {}),
           truncated: truncated.truncated,
           ...(truncated.truncated && { outputPath: truncated.outputPath }),
+          // altimate_change — authoritative source so the chat can badge Datamates MCP tools
+          source: mcpToolSource(key),
         }
 
         return {
-          title: "",
+          // altimate_change — MCP tools have no native title; give a readable label
+          title: humanizeMcpTitle(key),
           metadata,
           output: truncated.content,
           attachments: attachments.map((attachment) => ({

packages/opencode/src/tool/tool.ts

@@ -7,6 +7,9 @@ import { Truncate } from "./truncation"
 // altimate_change start — telemetry instrumentation for tool execution
 import { Telemetry } from "../altimate/telemetry"
 // altimate_change end
+// altimate_change start — humanize tool-call titles at the source
+import { describeToolCall } from "../altimate/tool-label"
+// altimate_change end
 
 export namespace Tool {
   interface Metadata {
@@ -121,6 +124,10 @@ export namespace Tool {
             }
             throw error
           }
+          // altimate_change start — humanize the tool-call title at the source so any
+          // client (chat webview, TUI, ...) can render a readable label from state.title.
+          result = { ...result, title: describeToolCall(id, args, result.title) ?? result.title }
+          // altimate_change end
           // Telemetry runs after execute() succeeds — wrapped so it never breaks the tool
           try {
             const isSoftFailure = result.metadata?.success === false

packages/opencode/test/altimate/tool-label.test.ts

@@ -0,0 +1,52 @@
+import { describe, test, expect } from "bun:test"
+import { describeToolCall } from "../../src/altimate/tool-label"
+
+describe("describeToolCall", () => {
+  test("humanizes reads of a dbt model into 'Reading <name> model'", () => {
+    expect(describeToolCall("read", { filePath: "models/customers.sql" }, "models/customers.sql")).toBe(
+      "Reading customers model",
+    )
+    expect(
+      describeToolCall("read", { filePath: "models/staging/stg_customers.sql" }, "models/staging/stg_customers.sql"),
+    ).toBe("Reading stg_customers model")
+  })
+
+  test("maps other dbt directories to their noun", () => {
+    expect(describeToolCall("edit", { filePath: "macros/cents_to_dollars.sql" }, "macros/cents_to_dollars.sql")).toBe(
+      "Editing cents_to_dollars macro",
+    )
+    expect(describeToolCall("write", { filePath: "analyses/rollup.sql" }, "analyses/rollup.sql")).toBe(
+      "Writing rollup analysis",
+    )
+    expect(describeToolCall("read", { filePath: "seeds/raw_customers.csv" }, "seeds/raw_customers.csv")).toBe(
+      "Reading raw_customers seed",
+    )
+  })
+
+  test("falls back to the filename for non-dbt paths (never a false 'model')", () => {
+    expect(describeToolCall("read", { filePath: "dbt_project.yml" }, "dbt_project.yml")).toBe("Reading dbt_project.yml")
+    expect(describeToolCall("read", { filePath: "src/index.ts" }, "src/index.ts")).toBe("Reading index.ts")
+  })
+
+  test("labels glob / grep / list by their target", () => {
+    expect(describeToolCall("glob", { pattern: "**/*.sql" }, "12 matches")).toBe("Searching **/*.sql")
+    expect(describeToolCall("grep", { pattern: "customer_id" }, "3 matches")).toBe("Searching customer_id")
+    expect(describeToolCall("list", { path: "models" }, "models/")).toBe("Listing models")
+  })
+
+  test("keeps the tool's own title for non-file / rich-title tools", () => {
+    expect(
+      describeToolCall("sql_analyze", { filePath: "models/customers.sql" }, "Analyze: 2 issues [high]"),
+    ).toBe("Analyze: 2 issues [high]")
+    expect(describeToolCall("bash", { command: "dbt build" }, "Run full dbt build")).toBe("Run full dbt build")
+    // apply_patch carries a diff, not a path, so it keeps its own per-file title.
+    expect(describeToolCall("apply_patch", { patch: "*** Update File: models/x.sql" }, "# Patched x.sql")).toBe(
+      "# Patched x.sql",
+    )
+  })
+
+  test("falls back to the raw title when a file tool has no usable path", () => {
+    expect(describeToolCall("read", {}, "some title")).toBe("some title")
+    expect(describeToolCall("read", undefined, "some title")).toBe("some title")
+  })
+})

packages/opencode/test/altimate/tool-source.test.ts

@@ -0,0 +1,39 @@
+import { describe, test, expect } from "bun:test"
+import { registryToolSource, mcpToolSource, humanizeMcpTitle } from "../../src/altimate/tool-source"
+
+describe("registryToolSource", () => {
+  test("native opencode tools → builtin", () => {
+    for (const id of ["read", "write", "edit", "glob", "grep", "list", "bash", "task", "skill", "apply_patch"]) {
+      expect(registryToolSource(id)).toBe("builtin")
+    }
+  })
+
+  test("any non-native registry tool → altimate (incl. tools not enumerated here)", () => {
+    for (const id of ["sql_analyze", "schema_inspect", "finops_query_history", "altimate_core_check", "data_diff", "some_new_altimate_tool"]) {
+      expect(registryToolSource(id)).toBe("altimate")
+    }
+  })
+})
+
+describe("mcpToolSource", () => {
+  test("Datamates MCP tools → altimate", () => {
+    expect(mcpToolSource("datamates_jira_get_issue")).toBe("altimate")
+    expect(mcpToolSource("datamate_snowflake_query")).toBe("altimate")
+  })
+
+  test("third-party MCP tools → mcp", () => {
+    expect(mcpToolSource("github_search_issues")).toBe("mcp")
+    expect(mcpToolSource("linear_create_issue")).toBe("mcp")
+  })
+})
+
+describe("humanizeMcpTitle", () => {
+  test("strips the client segment and Title-Cases the rest", () => {
+    expect(humanizeMcpTitle("datamates_jira_get_issue")).toBe("Jira Get Issue")
+    expect(humanizeMcpTitle("github_search_issues")).toBe("Search Issues")
+  })
+
+  test("falls back gracefully for single-segment keys", () => {
+    expect(humanizeMcpTitle("ping")).toBe("Ping")
+  })
+})

packages/opencode/test/tool/write.test.ts

@@ -328,7 +328,7 @@ describe("tool.write", () => {
   })
 
   describe("title generation", () => {
-    test("returns relative path as title", async () => {
+    test("humanizes the title to a readable label", async () => {
       await using tmp = await tmpdir()
       const filepath = path.join(tmp.path, "src", "components", "Button.tsx")
       await fs.mkdir(path.dirname(filepath), { recursive: true })
@@ -345,7 +345,10 @@ describe("tool.write", () => {
             ctx,
           )
 
-          expect(result.title).toEndWith(path.join("src", "components", "Button.tsx"))
+          // The execute() wrapper humanizes file-tool titles at the source
+          // (see src/altimate/tool-label.ts) — a non-dbt path degrades to the
+          // filename, so the title is a readable "Writing <file>" label.
+          expect(result.title).toBe("Writing Button.tsx")
         },
       })
     })