diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 825cf84..715a1ba 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -55,10 +55,7 @@ jobs:
 
       - name: Set up project
         run: |
-          uv pip install --editable='.[develop,test]'
+          uv pip install --editable='.[all,develop,test]'
 
       - name: Run linter and software tests
         run: poe check
-
-      - name: Run build
-        run: poe build
diff --git a/.gitignore b/.gitignore
index 9aec38f..dd1808a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-.coverage
+.coverage*
 coverage.xml
 .idea
 .venv*
diff --git a/CHANGES.md b/CHANGES.md
index 3b457ef..984170b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,9 +6,10 @@
 - CLI: Provided new subcommand `cratedb-about outline`
 - API: Provided `cratedb_about.CrateDbKnowledgeOutline` for retrieving
   information from the knowledge base outline within Python programs
+- CLI: Zapped working tree building by establishing a new `cratedb-about build`
+  subcommand
 
 ## v0.0.2 - 2025-05-09
-- Chore: Removed `sponge` command in `poe build`
 - Content: Added two pieces of content from blog articles, converted to Markdown format
 - Documentation: Started advertising to use the designated location
   https://cdn.crate.io/about/ for consuming the generated resources
diff --git a/README.md b/README.md
index 5199b81..51ab09f 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ to relevant resources in the spirit of a curated knowledge backbone.
 
 Install `cratedb-about` package.
 ```shell
-uv tool install --upgrade 'cratedb-about @ git+https://github.com/crate/about'
+uv tool install --upgrade 'cratedb-about[all] @ git+https://github.com/crate/about'
 ```
 
 ## Usage
@@ -57,7 +57,17 @@ example_items = outline.get_items("Examples", as_dict=True)
 section_names = outline.section_names
 ```
 
-### Query with LLM
+### llms-txt
+
+#### Build
+
+Rebuild all `llms.txt` and auxiliary files.
+```shell
+export OUTDIR=./public_html
+cratedb-about build
+```
+
+#### Query
 
 Ask questions about CrateDB.
 ```shell
diff --git a/docs/sandbox.md b/docs/sandbox.md
index 8b32e98..e53cf57 100644
--- a/docs/sandbox.md
+++ b/docs/sandbox.md
@@ -8,7 +8,8 @@ cd cratedb-about
 
 Rebuild all the `llms.txt` files.
 ```shell
-uv run poe build
+export OUTDIR=./public_html
+uvx --with-editable=. cratedb-about build
 ```
 
 Ask questions about CrateDB.
diff --git a/pyproject.toml b/pyproject.toml
index d2ba6c7..ffd46df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,19 +70,26 @@ dynamic = [
 ]
 dependencies = [
   "cattrs<25",
-  "claudette",
   "click<9",
+  "colorlog<7",
   "llms-txt==0.0.4",
-  "openai",
-  "poethepoet<1",
+  "pueblo==0.0.11",
   "requests<3",
 ]
+optional-dependencies.all = [
+  "cratedb-about[llm]",
+]
 optional-dependencies.develop = [
   "mypy<1.16",
+  "poethepoet<1",
   "pyproject-fmt<3",
   "ruff<0.12",
   "validate-pyproject<1",
 ]
+optional-dependencies.llm = [
+  "claudette<0.2",
+  "openai<2",
+]
 optional-dependencies.release = [
   "build<2",
   "twine<6",
@@ -98,7 +105,10 @@ urls.Repository = "https://github.com/crate/about"
 scripts.cratedb-about = "cratedb_about.cli:cli"
 
 [tool.setuptools.package-data]
-cratedb_about = [ "*.yaml" ]
+cratedb_about = [
+  "*.md",
+  "*.yaml",
+]
 
 [tool.ruff]
 line-length = 100
@@ -195,17 +205,6 @@ describe-subst = "$Format:%(describe:match=v*)$"
 
 [tool.poe.tasks]
 
-build.env = { OUTDIR = "public_html" }
-build.sequence = [
-  { shell = "echo Generating content, target: ${OUTDIR}" },
-  { shell = "mkdir -p ${OUTDIR}" },
-  { shell = "cp src/content/about/llms-txt.md ${OUTDIR}/readme.md" },
-  { shell = "cp src/cratedb_about/outline/cratedb-outline.yaml ${OUTDIR}/outline.yaml" },
-  { shell = "cratedb-about outline --format markdown > ${OUTDIR}/outline.md" },
-  { shell = "llms_txt2ctx --optional=false ${OUTDIR}/outline.md > ${OUTDIR}/llms.txt" },
-  { shell = "llms_txt2ctx --optional=true ${OUTDIR}/outline.md > ${OUTDIR}/llms-full.txt" },
-]
-
 check = [
   "lint",
   "test",
diff --git a/src/cratedb_about/build/__init__.py b/src/cratedb_about/build/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/content/about/llms-txt.md b/src/cratedb_about/build/llmstxt-about.md
similarity index 100%
rename from src/content/about/llms-txt.md
rename to src/cratedb_about/build/llmstxt-about.md
diff --git a/src/cratedb_about/build/llmstxt.py b/src/cratedb_about/build/llmstxt.py
new file mode 100644
index 0000000..a614266
--- /dev/null
+++ b/src/cratedb_about/build/llmstxt.py
@@ -0,0 +1,51 @@
+# ruff: noqa: S603, S607
+import dataclasses
+import logging
+import shutil
+import subprocess
+from importlib import resources
+from pathlib import Path
+
+logger = logging.getLogger(__name__)
+
+
+@dataclasses.dataclass
+class LllmsTxtBuilder:
+    """
+    Build llms.txt files for CrateDB.
+    """
+
+    outdir: Path
+
+    def run(self):
+        logger.info(f"Building llms-txt. Output directory: {self.outdir}")
+        self.outdir.mkdir(parents=True, exist_ok=True)
+
+        logger.info("Copying source and documentation files")
+        shutil.copy(
+            str(resources.files("cratedb_about.build") / "llmstxt-about.md"),
+            self.outdir / "readme.md",
+        )
+        shutil.copy(
+            str(resources.files("cratedb_about.outline") / "cratedb-outline.yaml"),
+            self.outdir / "outline.yaml",
+        )
+
+        logger.info("Dumping outline source file")
+        subprocess.run(
+            ["cratedb-about", "outline", "--format=markdown"],
+            stdout=open(f"{self.outdir}/outline.md", "w"),
+            check=True,
+        )
+
+        logger.info("Generating llms-txt files")
+        subprocess.run(
+            ["llms_txt2ctx", "--optional=false", f"{self.outdir}/outline.md"],
+            stdout=open(f"{self.outdir}/llms.txt", "w"),
+            check=True,
+        )
+        subprocess.run(
+            ["llms_txt2ctx", "--optional=true", f"{self.outdir}/outline.md"],
+            stdout=open(f"{self.outdir}/llms-full.txt", "w"),
+            check=True,
+        )
diff --git a/src/cratedb_about/cli.py b/src/cratedb_about/cli.py
index 7e8d4b0..09bf0ab 100644
--- a/src/cratedb_about/cli.py
+++ b/src/cratedb_about/cli.py
@@ -1,24 +1,30 @@
+import logging
 import typing as t
+from pathlib import Path
 
 import click
+from pueblo.util.cli import boot_click
 
+from cratedb_about.build.llmstxt import LllmsTxtBuilder
 from cratedb_about.core import CrateDBConversation
 from cratedb_about.model import Example
 from cratedb_about.outline.model import CrateDbKnowledgeOutline
 
+logger = logging.getLogger(__name__)
+
 
 @click.group()
 @click.version_option()
 @click.pass_context
 def cli(ctx: click.Context) -> None:
-    pass
+    boot_click(ctx=ctx)
 
 
 @cli.command()
 @click.option(
     "--format", "-f", "format_", type=click.Choice(["markdown", "yaml", "json"]), default="markdown"
 )
-def outline(format_: t.Literal["markdown", "yaml", "json"] = "markdown"):
+def outline(format_: t.Literal["markdown", "yaml", "json"] = "markdown") -> None:
     """
     Display the outline of the CrateDB documentation.
 
@@ -35,10 +41,21 @@ def outline(format_: t.Literal["markdown", "yaml", "json"] = "markdown"):
         raise ValueError(f"Invalid output format: {format_}")
 
 
+@cli.command()
+@click.option("--outdir", "-o", envvar="OUTDIR", type=Path, required=True)
+def build(outdir: Path) -> None:
+    """
+    Invoke the build. Now: Generate `llms.txt` files.
+    """
+    builder = LllmsTxtBuilder(outdir=outdir)
+    builder.run()
+    logger.info("Ready.")
+
+
 @cli.command()
 @click.argument("question", type=str, required=False)
 @click.option("--backend", type=click.Choice(["openai", "claude"]), default="openai")
-def ask(question: str, backend: t.Literal["claude", "openai"]):
+def ask(question: str, backend: t.Literal["claude", "openai"]) -> None:
     """
     Ask questions about CrateDB.
 
@@ -62,7 +79,7 @@ def ask(question: str, backend: t.Literal["claude", "openai"]):
 
 
 @cli.command()
-def list_questions():
+def list_questions() -> None:
     """
     List a few example questions about CrateDB.
     """
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..c7f9c37
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,9 @@
+import os
+
+import pytest
+
+
+@pytest.fixture(scope="session", autouse=True)
+def prune_environ():
+    """Prevent environment variables from leaking into software tests"""
+    os.environ.pop("OUTDIR", None)
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 629cf93..dc1f241 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -57,3 +57,40 @@ def test_cli_outline():
     assert "# CrateDB" in result.output
     assert "Things to remember when working with CrateDB" in result.output
     assert "Concept: Clustering" in result.output
+
+
+def test_cli_build(caplog, tmp_path):
+    runner = CliRunner()
+
+    result = runner.invoke(
+        cli,
+        args=["build"],
+        env={"OUTDIR": str(tmp_path)},
+        catch_exceptions=False,
+    )
+    assert result.exit_code == 0, result.output
+
+    assert "Building llms-txt" in caplog.text
+    assert "Dumping outline source file" in caplog.text
+    assert "Generating llms-txt files" in caplog.text
+    assert "Ready." in caplog.text
+
+    # Verify that the expected output files are created
+    assert (tmp_path / "llms.txt").exists()
+    assert (tmp_path / "llms-full.txt").exists()
+
+
+def test_cli_build_without_outdir():
+    runner = CliRunner()
+
+    # Test without OUTDIR environment variable.
+    result = runner.invoke(
+        cli,
+        args=["build"],
+        env={},  # No OUTDIR set
+        catch_exceptions=False,
+    )
+
+    # Verify appropriate error handling.
+    assert result.exit_code != 0, result.output
+    assert "Error: Missing option '--outdir' / '-o'" in result.output