diff --git a/solvent/__main__.py b/solvent/__main__.py
index cd0c63d..351b713 100644
--- a/solvent/__main__.py
+++ b/solvent/__main__.py
@@ -15,6 +15,7 @@
   upgrade       check for newer version on PyPI; --check exits 1 if outdated
   jobs          list/show/retry/cancel jobs (jobs --help for sub-commands)
   logs          tail the structured event log; -f to follow, --job/--stage to filter
+  config        show/get/set/reset local configuration values
   serve         webhooks + job API + hosted briefs
   worker        resume incomplete jobs, process the queue
   telegram      long-poll the Telegram bot
@@ -65,6 +66,10 @@ def main():
         sys.argv.pop(1)
         from .logs import main as logs_main
         logs_main()
+    elif len(sys.argv) > 1 and sys.argv[1] == "config":
+        sys.argv.pop(1)
+        from .config_cmd import main as config_main
+        config_main()
     elif len(sys.argv) > 1 and sys.argv[1] == "serve":
         sys.argv.pop(1)
         from .server import main as serve_main
diff --git a/solvent/config_cmd.py b/solvent/config_cmd.py
new file mode 100644
index 0000000..9d36183
--- /dev/null
+++ b/solvent/config_cmd.py
@@ -0,0 +1,147 @@
+"""
+config_cmd.py — CLI for viewing and editing SOLVENT configuration.
+
+Usage:
+    solvent config              show all current config values
+    solvent config get <key>    print a single value
+    solvent config set <key> <value>  update a value and save
+    solvent config reset        restore all defaults
+    solvent config --json       output as JSON
+"""
+
+from __future__ import annotations
+
+import json
+import sys
+from dataclasses import fields
+from typing import Any
+
+
+def _load_or_default():
+    from .config import SolventConfig, load_config
+    return load_config() or SolventConfig()
+
+
+def _coerce(field_type: str, value: str) -> Any:
+    """Convert a CLI string value to the appropriate Python type."""
+    if field_type in ("bool",):
+        if value.lower() in ("true", "1", "yes", "on"):
+            return True
+        if value.lower() in ("false", "0", "no", "off"):
+            return False
+        raise ValueError(f"expected true/false, got {value!r}")
+    if field_type == "int":
+        return int(value)
+    if field_type == "float":
+        return float(value)
+    return value  # str and anything else
+
+
+def _field_type_name(f) -> str:
+    """Return a simplified type name string for a dataclass field."""
+    t = f.type
+    if hasattr(t, "__name__"):
+        return t.__name__
+    s = str(t)
+    for prefix in ("typing.", "<class '", "'"):
+        s = s.replace(prefix, "")
+    return s.rstrip("'>")
+
+
+def cmd_show(*, as_json: bool = False) -> None:
+    cfg = _load_or_default()
+    data = cfg.to_dict()
+    if as_json:
+        print(json.dumps(data, indent=2))
+        return
+    col = max(len(k) for k in data) + 2
+    for k, v in data.items():
+        print(f"  {k:<{col}} {v}")
+
+
+def cmd_get(key: str, *, as_json: bool = False) -> int:
+    cfg = _load_or_default()
+    data = cfg.to_dict()
+    if key not in data:
+        print(f"[solvent config] unknown key: {key!r}", file=sys.stderr)
+        return 1
+    val = data[key]
+    if as_json:
+        print(json.dumps(val))
+    else:
+        print(val)
+    return 0
+
+
+def cmd_set(key: str, value: str) -> int:
+    from .config import SolventConfig, load_config, save_config
+
+    cfg = load_config() or SolventConfig()
+    known_fields = {f.name: f for f in fields(SolventConfig)}
+    if key not in known_fields:
+        print(f"[solvent config] unknown key: {key!r}", file=sys.stderr)
+        print(f"  Valid keys: {', '.join(sorted(known_fields))}", file=sys.stderr)
+        return 1
+
+    f = known_fields[key]
+    type_name = _field_type_name(f)
+    try:
+        coerced = _coerce(type_name, value)
+    except (ValueError, TypeError) as e:
+        print(f"[solvent config] bad value for {key!r} ({type_name}): {e}", file=sys.stderr)
+        return 1
+
+    setattr(cfg, key, coerced)
+    try:
+        cfg.validate()
+    except ValueError as e:
+        print(f"[solvent config] validation error: {e}", file=sys.stderr)
+        return 1
+
+    save_config(cfg)
+    print(f"  {key} = {coerced}")
+    return 0
+
+
+def cmd_reset() -> int:
+    from .config import SolventConfig, save_config
+    cfg = SolventConfig()
+    save_config(cfg)
+    print("[solvent config] reset to defaults")
+    return 0
+
+
+def main() -> None:
+    import argparse
+
+    p = argparse.ArgumentParser(
+        description="View and edit SOLVENT configuration.",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    p.add_argument("--json", dest="as_json", action="store_true",
+                   help="output as JSON")
+    sub = p.add_subparsers(dest="cmd")
+
+    sub.add_parser("show", help="show all config values (default)")
+    g = sub.add_parser("get", help="get a single config value")
+    g.add_argument("key")
+    s = sub.add_parser("set", help="set a config value")
+    s.add_argument("key")
+    s.add_argument("value")
+    sub.add_parser("reset", help="reset all values to defaults")
+
+    args = p.parse_args()
+
+    if args.cmd is None or args.cmd == "show":
+        cmd_show(as_json=args.as_json)
+        sys.exit(0)
+    elif args.cmd == "get":
+        sys.exit(cmd_get(args.key, as_json=args.as_json))
+    elif args.cmd == "set":
+        sys.exit(cmd_set(args.key, args.value))
+    elif args.cmd == "reset":
+        sys.exit(cmd_reset())
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/test_config_cmd.py b/tests/test_config_cmd.py
new file mode 100644
index 0000000..f805aa8
--- /dev/null
+++ b/tests/test_config_cmd.py
@@ -0,0 +1,218 @@
+"""Tests for solvent/config_cmd.py."""
+
+from __future__ import annotations
+
+import json
+import sys
+from io import StringIO
+from pathlib import Path
+from unittest import mock
+
+import pytest
+
+from solvent.config import CONFIG_PATH, SolventConfig, save_config
+from solvent.config_cmd import cmd_get, cmd_reset, cmd_set, cmd_show, _coerce
+
+
+# ---------------------------------------------------------------------------
+# _coerce
+# ---------------------------------------------------------------------------
+
+def test_coerce_bool_true():
+    assert _coerce("bool", "true") is True
+    assert _coerce("bool", "1") is True
+    assert _coerce("bool", "yes") is True
+
+
+def test_coerce_bool_false():
+    assert _coerce("bool", "false") is False
+    assert _coerce("bool", "0") is False
+    assert _coerce("bool", "no") is False
+
+
+def test_coerce_bool_invalid():
+    with pytest.raises(ValueError):
+        _coerce("bool", "maybe")
+
+
+def test_coerce_int():
+    assert _coerce("int", "42") == 42
+
+
+def test_coerce_float():
+    assert _coerce("float", "3.14") == pytest.approx(3.14)
+
+
+def test_coerce_str():
+    assert _coerce("str", "hello") == "hello"
+
+
+# ---------------------------------------------------------------------------
+# Fixtures
+# ---------------------------------------------------------------------------
+
+@pytest.fixture(autouse=True)
+def isolate_config(tmp_path, monkeypatch):
+    """Redirect config reads/writes to tmp_path."""
+    cfg_dir = tmp_path / ".solvent"
+    cfg_dir.mkdir()
+    cfg_path = cfg_dir / "config.json"
+    monkeypatch.setattr("solvent.config.CONFIG_DIR", cfg_dir)
+    monkeypatch.setattr("solvent.config.CONFIG_PATH", cfg_path)
+    monkeypatch.setattr("solvent.config_cmd.CONFIG_PATH", cfg_path, raising=False)
+    yield cfg_path
+
+
+# ---------------------------------------------------------------------------
+# cmd_show
+# ---------------------------------------------------------------------------
+
+def test_cmd_show_prints_keys(capsys):
+    cmd_show()
+    captured = capsys.readouterr()
+    assert "model" in captured.out
+    assert "rate_burst_limit" in captured.out
+
+
+def test_cmd_show_json(capsys):
+    cmd_show(as_json=True)
+    captured = capsys.readouterr()
+    data = json.loads(captured.out)
+    assert "model" in data
+    assert "rate_burst_limit" in data
+
+
+def test_cmd_show_reflects_saved_config(isolate_config, capsys):
+    cfg = SolventConfig(model="nemotron")
+    save_config(cfg)
+    cmd_show()
+    captured = capsys.readouterr()
+    assert "nemotron" in captured.out
+
+
+# ---------------------------------------------------------------------------
+# cmd_get
+# ---------------------------------------------------------------------------
+
+def test_cmd_get_known_key(capsys):
+    rc = cmd_get("model")
+    assert rc == 0
+    captured = capsys.readouterr()
+    assert "offline" in captured.out
+
+
+def test_cmd_get_unknown_key(capsys):
+    rc = cmd_get("nonexistent_key")
+    assert rc == 1
+    captured = capsys.readouterr()
+    assert "unknown key" in captured.err
+
+
+def test_cmd_get_json_mode(capsys):
+    rc = cmd_get("rate_burst_limit", as_json=True)
+    assert rc == 0
+    captured = capsys.readouterr()
+    val = json.loads(captured.out)
+    assert isinstance(val, int)
+
+
+# ---------------------------------------------------------------------------
+# cmd_set
+# ---------------------------------------------------------------------------
+
+def test_cmd_set_string_field(isolate_config, capsys):
+    rc = cmd_set("model", "nemotron")
+    assert rc == 0
+    from solvent.config import load_config
+    cfg = load_config()
+    assert cfg.model == "nemotron"
+
+
+def test_cmd_set_bool_field(isolate_config):
+    rc = cmd_set("stripe_test_mode", "true")
+    assert rc == 0
+    from solvent.config import load_config
+    cfg = load_config()
+    assert cfg.stripe_test_mode is True
+
+
+def test_cmd_set_int_field(isolate_config):
+    rc = cmd_set("rate_burst_limit", "10")
+    assert rc == 0
+    from solvent.config import load_config
+    cfg = load_config()
+    assert cfg.rate_burst_limit == 10
+
+
+def test_cmd_set_unknown_key_returns_1(capsys):
+    rc = cmd_set("bogus_key", "value")
+    assert rc == 1
+    captured = capsys.readouterr()
+    assert "unknown key" in captured.err
+
+
+def test_cmd_set_invalid_value_returns_1(capsys):
+    rc = cmd_set("rate_burst_limit", "not_a_number")
+    assert rc == 1
+
+
+def test_cmd_set_validation_failure_returns_1(capsys):
+    rc = cmd_set("model", "turbo-gpt-99")
+    assert rc == 1
+    captured = capsys.readouterr()
+    assert "validation" in captured.err.lower() or "invalid" in captured.err.lower()
+
+
+# ---------------------------------------------------------------------------
+# cmd_reset
+# ---------------------------------------------------------------------------
+
+def test_cmd_reset_restores_defaults(isolate_config, capsys):
+    cmd_set("model", "nemotron")
+    rc = cmd_reset()
+    assert rc == 0
+    from solvent.config import load_config
+    cfg = load_config()
+    assert cfg.model == "offline"
+    captured = capsys.readouterr()
+    assert "reset" in captured.out.lower()
+
+
+# ---------------------------------------------------------------------------
+# CLI main dispatch
+# ---------------------------------------------------------------------------
+
+def test_main_show(isolate_config, capsys):
+    with mock.patch("sys.argv", ["solvent", "show"]):
+        with pytest.raises(SystemExit) as exc:
+            from solvent.config_cmd import main
+            main()
+        assert exc.value.code == 0
+    captured = capsys.readouterr()
+    assert "model" in captured.out
+
+
+def test_main_no_subcommand_shows_all(isolate_config, capsys):
+    with mock.patch("sys.argv", ["solvent"]):
+        with pytest.raises(SystemExit) as exc:
+            from solvent.config_cmd import main
+            main()
+        assert exc.value.code == 0
+    captured = capsys.readouterr()
+    assert "model" in captured.out
+
+
+def test_main_set_and_get(isolate_config, capsys):
+    with mock.patch("sys.argv", ["solvent", "set", "model", "nemotron"]):
+        with pytest.raises(SystemExit) as exc:
+            from solvent.config_cmd import main
+            main()
+        assert exc.value.code == 0
+
+    with mock.patch("sys.argv", ["solvent", "get", "model"]):
+        with pytest.raises(SystemExit) as exc:
+            from solvent.config_cmd import main
+            main()
+        assert exc.value.code == 0
+    captured = capsys.readouterr()
+    assert "nemotron" in captured.out