diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36bad91..7ad405e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+- SDK: `validate_icp` can run without an LLM key. Pass `integration_id=NATIVE_ICP_ENGINE` (exported from `discolike`, the string `"native-icp"`) to score with DiscoLike's own ICP-fit model instead of your BYOK LLM: no LLM cost, no LLM key, and no web search on that run. The same sentinel works on `discogen.process` for a prompt that already carries the validation structure. Two new errors are specific to it: a 400 `ValidationError` when the ICP text does not yield a Mandatory / Reject if / Nice-to-have prompt, and a 503 `ServerError` when no ICP-fit engine is available. Task lifecycle, polling and statuses are unchanged.
+- SDK: `Job` / `AsyncJob` returned by `validate_icp`, `discogen.process` and `discogen.process_personas` carry `column_name` from the submit response. The engine picks the columns — an LLM validation returns `Fit` / `Confidence` / `Reasoning`, the native model `ICP Fit` (`Yes` / `No` at a 0.50 threshold on the score) / `ICP Score` (the calibrated probability, 0.00-1.00 as a string) / `Reasoning (always null)` — so read it rather than hardcoding either set. It is `None` on a job reattached with `discogen.job(task_id)`.
+- CLI: `validate-icp --integration-id native-icp` and `discogen run --integration-id native-icp` select the native ICP-fit model; `discolike validate-icp --help` documents both column sets.
+- **Breaking:** the ICP-fit verdict is title case on every surface. An LLM `validate_icp` run's `Fit` column now returns `Yes` / `No` instead of `yes` / `no`, matching the native engine's `ICP Fit` column, DiscoGen and the app. Code that matches the verdict on the exact string `"yes"` has to be updated; compare case-insensitively to survive either.
 - SDK: `contacts.generate` can run without an LLM key. Pass `integration_id=NATIVE_ENGINE` (exported from `discolike`) for DiscoLike Groove, DiscoLike's native extractor, or omit `integration_id` to get your default LLM integration and native when you have none. The native engine returns every person the search surfaces with a title and does not validate titles against `icp_text`; a search provider is still required. `JobStatus` gains `title_validation` (`"llm"` or `"none"`, `None` on non-ContaGen jobs) so you can tell which engine ran.
 - SDK: discover and count take `sub_industry` / `negate_sub_industry` (217 second-level labels scoped to their parent industry category; a bare label like `ROOFING` adds `CONSTRUCTION` to `category` server-side) and a multi-shape geo filter: `geo` (`lat,lon` or `lat,lon,radius`), `bbox` (`min_lat,min_lon,max_lat,max_lon`, longitudes may wrap the antimeridian) and `lat` / `lon` / `radius` (`50km`, `30mi`, or a bare number meaning kilometres; defaults to 50km). `geo` and `bbox` are lists, every circle and box is OR'd with the others and with the `lat`/`lon` centre, and a query carries at most 10 shapes. Passing a single `bbox` or `geo` string still works and is sent as a one-element list. The SDK applies the platform's own shape rules before the request leaves the client: a box is four finite numbers with `-90 <= min_lat < max_lat <= 90`, longitudes within ±180 and `min_lon` different from `max_lon`; a circle is a valid coordinate pair with an optional radius above 0 and at most 1000km.
 - SDK: `CompanyProfile` gains `sub_industry` (label:confidence, `None` when the domain was never scored against its category's sub-labels), `latitude`, `longitude` and `geo_precision`. The coordinates come back under their full names, and a response still using the pre-rename `lat` / `lon` keys parses into them, so the SDK works against an API on either side of that release. The `lat` / `lon` discover and count filters keep their names.
diff --git a/README.md b/README.md
index 75f00e1..37ff589 100644
--- a/README.md
+++ b/README.md
@@ -330,6 +330,29 @@ print(result.title_validation)  # "none" on the native engine, "llm" on a BYOK r
 
 The native engine returns every person the search surfaces with a title and does not validate titles against `icp_text`, so filter them yourself when that matters. Omit `integration_id` to use your default LLM integration, or native when you have none. A search provider is required either way.
 
+### ICP validation without an LLM key
+
+`validate_icp` runs your ICP text against each domain on your own LLM provider key, or on DiscoLike's own ICP-fit model. Pass `NATIVE_ICP_ENGINE` for the latter — no LLM key, no LLM cost, and no web search on that run:
+
+```python
+from discolike import NATIVE_ICP_ENGINE
+from discolike.requests import ValidateIcpRequest
+
+job = client.validate_icp(
+    ValidateIcpRequest(
+        icp_text="Cybersecurity for SMBs in North America, 50-500 employees",
+        domains=["gusto.com", "rippling.com"],
+        integration_id=NATIVE_ICP_ENGINE,
+    )
+)
+print(job.column_name)  # ["ICP Fit", "ICP Score", "Reasoning"]
+result = job.wait()
+```
+
+The engine decides the result columns, so read `job.column_name` instead of hardcoding them: an LLM run returns `Fit` / `Confidence` / `Reasoning`, the native model `ICP Fit` / `ICP Score` / `Reasoning (always null)`. `ICP Fit` is `Yes` or `No` at a 0.50 threshold on `ICP Score`, the calibrated probability as a 0.00-1.00 string. The native model returns only that score, so `Reasoning` is always `null` — the column is there to keep the set the same shape as an LLM run, not to carry an explanation. `integration_id="native-icp"` also works on `discogen.process` for a prompt that already carries the validation structure.
+
+Two errors are specific to the native engine: a 400 `ValidationError` when the ICP text does not yield a Mandatory / Reject if / Nice-to-have prompt, and a 503 `ServerError` when no ICP-fit engine is available. Task lifecycle, polling and statuses are the same either way.
+
 ### Error handling
 
 All errors inherit from `DiscolikeError`:
diff --git a/packages/discolike-cli/src/discolike_cli/_help.py b/packages/discolike-cli/src/discolike_cli/_help.py
index fecb5b3..7a9913e 100644
--- a/packages/discolike-cli/src/discolike_cli/_help.py
+++ b/packages/discolike-cli/src/discolike_cli/_help.py
@@ -160,8 +160,13 @@ def format_help(self, ctx: Context, formatter: HelpFormatter) -> None:
 Output (success, exit 0):
 {_JOB_SUBMITTED}
   With --wait: the results object keyed by domain:
-    {{<domain>: {{"Fit": "yes"|"no", "Confidence": "high"|"medium"|"low", "Reasoning": <string>}}, ...}}
+    {{<domain>: {{"Fit": "Yes"|"No", "Confidence": "high"|"medium"|"low", "Reasoning": <string>}}, ...}}
   Runs on the account's own LLM provider key.
+  With --integration-id native-icp: DiscoLike's own ICP-fit model, no LLM key or cost and no
+  web search. Keys become "ICP Fit" ("Yes"|"No" at a 0.50 threshold on the score), "ICP Score"
+  (the calibrated probability, 0.00-1.00 as a string) and "Reasoning", always null there: the
+  model returns a score, not an explanation. A 400 when the ICP text yields no Mandatory /
+  Reject if / Nice-to-have prompt, a 503 when no ICP-fit engine is available.
 
 {_JOB_ERRORS}
 """,
diff --git a/packages/discolike-cli/src/discolike_cli/discogen.py b/packages/discolike-cli/src/discolike_cli/discogen.py
index a092997..2203954 100644
--- a/packages/discolike-cli/src/discolike_cli/discogen.py
+++ b/packages/discolike-cli/src/discolike_cli/discogen.py
@@ -28,7 +28,10 @@
     "segment jobs 'segment', contact bulk-match 'contactmatch')."
 )
 QUERY_HELP = "Research query to run."
-INTEGRATION_ID_HELP = "Integration ID to use for the run."
+INTEGRATION_ID_HELP = (
+    "Integration ID to use for the run, or 'native-icp' to score an ICP validation prompt with "
+    "DiscoLike's own model at no LLM cost."
+)
 WEB_SEARCH_HELP = "Toggle web search during research."
 CONTEXT_MODE_HELP = "Context mode; see docs.discolike.com."
 INCLUDE_X_SEARCH_HELP = "Toggle including X search in the research."
diff --git a/packages/discolike-cli/src/discolike_cli/enrich.py b/packages/discolike-cli/src/discolike_cli/enrich.py
index 0c56c84..89cd238 100644
--- a/packages/discolike-cli/src/discolike_cli/enrich.py
+++ b/packages/discolike-cli/src/discolike_cli/enrich.py
@@ -21,6 +21,10 @@
 WAIT_HELP = "Block until the job finishes, streaming progress to stderr."
 TIMEOUT_HELP = "Max seconds to wait with --wait."
 QUERY_ID_HELP = "Saved query ID whose domains are included alongside the file/--domain ones (repeatable)."
+INTEGRATION_ID_HELP = (
+    "Integration ID to use for the validation, or 'native-icp' to score with DiscoLike's own "
+    "ICP-fit model at no LLM cost (no LLM key and no web search on that run)."
+)
 
 
 @handle_errors
@@ -35,9 +39,7 @@ def validate_icp_command(
         help="CSV with a 'domain' column, or one domain per line (instead of --domain).",
     ),
     context_mode: str | None = typer.Option(None, "--context-mode", help="Context mode; see docs.discolike.com."),
-    integration_id: str | None = typer.Option(
-        None, "--integration-id", help="Integration ID to use for the validation."
-    ),
+    integration_id: str | None = typer.Option(None, "--integration-id", help=INTEGRATION_ID_HELP),
     web_search: bool | None = typer.Option(
         None, "--web-search/--no-web-search", help="Toggle web search during validation."
     ),
diff --git a/packages/discolike-cli/tests/test_enrich_cli.py b/packages/discolike-cli/tests/test_enrich_cli.py
index 1cb3a3c..dccec9a 100644
--- a/packages/discolike-cli/tests/test_enrich_cli.py
+++ b/packages/discolike-cli/tests/test_enrich_cli.py
@@ -271,3 +271,23 @@ def handler(request: httpx2.Request) -> httpx2.Response:
     assert result.exit_code == 0, result.output
     assert captured[0].url.params.get_list("query_id") == ["q1"]
     assert captured[1].url.params.get_list("query_id") == ["q2"]
+
+
+def test_validate_icp_sends_native_icp_sentinel(install_build_client: Callable[[Handler], None]) -> None:
+    captured: dict[str, object] = {}
+
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        captured["body"] = json.loads(request.content)
+        return httpx2.Response(200, json={"task_id": "vi-native"})
+
+    install_build_client(handler)
+    result = runner.invoke(
+        app,
+        ["validate-icp", "--icp", "Cybersecurity for SMBs", "--domain", "acme.com", "--integration-id", "native-icp"],
+    )
+    assert result.exit_code == 0, result.output
+    assert captured["body"] == {
+        "icp_text": "Cybersecurity for SMBs",
+        "domains": ["acme.com"],
+        "integration_id": "native-icp",
+    }
diff --git a/packages/discolike-cli/tests/test_help.py b/packages/discolike-cli/tests/test_help.py
index be8dc8e..d25bbfd 100644
--- a/packages/discolike-cli/tests/test_help.py
+++ b/packages/discolike-cli/tests/test_help.py
@@ -51,6 +51,15 @@ def test_command_help_documents_output_and_errors(argv: list[str]) -> None:
     assert any(line.strip().startswith("Common errors:") for line in result.output.splitlines())
 
 
+def test_validate_icp_help_documents_a_title_case_verdict() -> None:
+    result = runner.invoke(app, ["validate-icp", "--help"])
+    assert result.exit_code == 0, result.output
+    assert '"Fit": "Yes"|"No"' in result.output
+    assert '"ICP Fit" ("Yes"|"No"' in result.output
+    assert '"yes"' not in result.output
+    assert '"no"' not in result.output
+
+
 def test_every_command_epilog_is_short() -> None:
     for name, text in _help.COMMAND_EPILOGS.items():
         assert len(text.splitlines()) <= 18, name
diff --git a/packages/discolike/README.md b/packages/discolike/README.md
index 815a2ec..152a58a 100644
--- a/packages/discolike/README.md
+++ b/packages/discolike/README.md
@@ -99,6 +99,29 @@ print(result.title_validation)  # "none" on the native engine, "llm" on a BYOK r
 
 The native engine returns every person the search surfaces with a title and does not validate titles against `icp_text`, so filter them yourself when that matters. Omit `integration_id` to use your default LLM integration, or native when you have none. A search provider is required either way.
 
+### ICP validation without an LLM key
+
+`validate_icp` runs your ICP text against each domain on your own LLM provider key, or on DiscoLike's own ICP-fit model. Pass `NATIVE_ICP_ENGINE` for the latter — no LLM key, no LLM cost, and no web search on that run:
+
+```python
+from discolike import NATIVE_ICP_ENGINE
+from discolike.requests import ValidateIcpRequest
+
+job = client.validate_icp(
+    ValidateIcpRequest(
+        icp_text="Cybersecurity for SMBs in North America, 50-500 employees",
+        domains=["gusto.com", "rippling.com"],
+        integration_id=NATIVE_ICP_ENGINE,
+    )
+)
+print(job.column_name)  # ["ICP Fit", "ICP Score", "Reasoning"]
+result = job.wait()
+```
+
+The engine decides the result columns, so read `job.column_name` instead of hardcoding them: an LLM run returns `Fit` / `Confidence` / `Reasoning`, the native model `ICP Fit` / `ICP Score` / `Reasoning (always null)`. `ICP Fit` is `Yes` or `No` at a 0.50 threshold on `ICP Score`, the calibrated probability as a 0.00-1.00 string. The native model returns only that score, so `Reasoning` is always `null` — the column is there to keep the set the same shape as an LLM run, not to carry an explanation. `integration_id="native-icp"` also works on `discogen.process` for a prompt that already carries the validation structure.
+
+Two errors are specific to the native engine: a 400 `ValidationError` when the ICP text does not yield a Mandatory / Reject if / Nice-to-have prompt, and a 503 `ServerError` when no ICP-fit engine is available. Task lifecycle, polling and statuses are the same either way.
+
 ## Links
 
 - **API documentation**: [docs.discolike.com](https://docs.discolike.com)
diff --git a/packages/discolike/src/discolike/__init__.py b/packages/discolike/src/discolike/__init__.py
index 017974b..f992306 100644
--- a/packages/discolike/src/discolike/__init__.py
+++ b/packages/discolike/src/discolike/__init__.py
@@ -19,6 +19,7 @@
 from discolike._models import DiscolikeRequest
 from discolike._version import __version__
 from discolike.resources.contacts import NATIVE_ENGINE
+from discolike.resources.discogen import NATIVE_ICP_ENGINE
 from discolike.resources.discovery import Company
 from discolike.resources.discovery import Count
 from discolike.resources.email import EmailBatchResults
@@ -32,6 +33,7 @@
 
 __all__ = [
     "NATIVE_ENGINE",
+    "NATIVE_ICP_ENGINE",
     "APIConnectionError",
     "ApiKeyCredential",
     "AsyncDiscolike",
diff --git a/packages/discolike/src/discolike/_jobs.py b/packages/discolike/src/discolike/_jobs.py
index c59792e..b3f9355 100644
--- a/packages/discolike/src/discolike/_jobs.py
+++ b/packages/discolike/src/discolike/_jobs.py
@@ -22,6 +22,11 @@
 DEFAULT_WAIT_TIMEOUT_SECONDS = 900.0
 DEFAULT_POLL_INTERVAL_SECONDS = 5.0
 
+# The engine that ran decides the result columns: an LLM validation returns Fit / Confidence /
+# Reasoning, the native ICP-fit model ICP Fit / ICP Score / Reasoning, whose Reasoning is always
+# null. Read it, never assume.
+ColumnName = str | list[str] | None
+
 
 class JobStatus(DiscolikeModel):
     status: str
@@ -41,10 +46,11 @@ class JobStatus(DiscolikeModel):
 
 
 class Job:
-    def __init__(self, transport: Transport, *, task_family: str, task_id: str) -> None:
+    def __init__(self, transport: Transport, *, task_family: str, task_id: str, column_name: ColumnName = None) -> None:
         self._transport = transport
         self.task_family = task_family
         self.task_id = task_id
+        self.column_name = column_name
 
     def status(self) -> JobStatus:
         response = self._transport.request("GET", f"/{self.task_family}/status/{self.task_id}")
@@ -78,10 +84,13 @@ def wait(
 
 
 class AsyncJob:
-    def __init__(self, transport: AsyncTransport, *, task_family: str, task_id: str) -> None:
+    def __init__(
+        self, transport: AsyncTransport, *, task_family: str, task_id: str, column_name: ColumnName = None
+    ) -> None:
         self._transport = transport
         self.task_family = task_family
         self.task_id = task_id
+        self.column_name = column_name
 
     async def status(self) -> JobStatus:
         response = await self._transport.request("GET", f"/{self.task_family}/status/{self.task_id}")
diff --git a/packages/discolike/src/discolike/resources/discogen.py b/packages/discolike/src/discolike/resources/discogen.py
index dae85f6..d6719bd 100644
--- a/packages/discolike/src/discolike/resources/discogen.py
+++ b/packages/discolike/src/discolike/resources/discogen.py
@@ -1,11 +1,14 @@
 from __future__ import annotations
 
+import httpx2
 import pydantic
 
 from discolike._jobs import FAMILY_DISCOGEN
 from discolike._jobs import AsyncJob
 from discolike._jobs import Job
 from discolike._models import DiscolikeModel
+from discolike._transport import AsyncTransport
+from discolike._transport import Transport
 from discolike.requests import DiscoGenPersonaProcessRequest
 from discolike.requests import DiscoGenProcessRequest
 from discolike.requests import ValidateIcpRequest
@@ -13,6 +16,28 @@
 from discolike.resources._base import SyncAPIResource
 from discolike.resources._base import api_route
 
+NATIVE_ICP_ENGINE = "native-icp"
+
+
+def _job(transport: Transport, response: httpx2.Response) -> Job:
+    payload = response.json()
+    return Job(
+        transport,
+        task_family=FAMILY_DISCOGEN,
+        task_id=payload["task_id"],
+        column_name=payload.get("column_name"),
+    )
+
+
+def _async_job(transport: AsyncTransport, response: httpx2.Response) -> AsyncJob:
+    payload = response.json()
+    return AsyncJob(
+        transport,
+        task_family=FAMILY_DISCOGEN,
+        task_id=payload["task_id"],
+        column_name=payload.get("column_name"),
+    )
+
 
 class DiscogenModelInfo(DiscolikeModel):
     name: str | None = None
@@ -26,13 +51,17 @@ class DiscogenModels(DiscolikeModel):
 class DiscogenResource(SyncAPIResource):
     @api_route("POST", "/discogen/process")
     def process(self, request: DiscoGenProcessRequest) -> Job:
-        response = self._transport.request("POST", "/discogen/process", json_body=request.to_wire())
-        return Job(self._transport, task_family=FAMILY_DISCOGEN, task_id=response.json()["task_id"])
+        """Run a research prompt against a list of domains.
+
+        `integration_id` takes an LLM provider integration UUID, or `NATIVE_ICP_ENGINE` to score
+        an ICP validation prompt with DiscoLike's own model. Omit it for the org default.
+        """
+        return _job(self._transport, self._transport.request("POST", "/discogen/process", json_body=request.to_wire()))
 
     @api_route("POST", "/discogen/process-personas")
     def process_personas(self, request: DiscoGenPersonaProcessRequest) -> Job:
         response = self._transport.request("POST", "/discogen/process-personas", json_body=request.to_wire())
-        return Job(self._transport, task_family=FAMILY_DISCOGEN, task_id=response.json()["task_id"])
+        return _job(self._transport, response)
 
     @api_route("GET", "/discogen/models")
     def models(self) -> DiscogenModels:
@@ -45,20 +74,32 @@ def job(self, task_id: str) -> Job:
 class ValidateResource(SyncAPIResource):
     @api_route("POST", "/validate/icp")
     def icp(self, request: ValidateIcpRequest) -> Job:
-        response = self._transport.request("POST", "/validate/icp", json_body=request.to_wire())
-        return Job(self._transport, task_family=FAMILY_DISCOGEN, task_id=response.json()["task_id"])
+        """Validate domains against an ICP description.
+
+        `integration_id` takes an LLM provider integration UUID, or `NATIVE_ICP_ENGINE` to score
+        with DiscoLike's own ICP-fit model: no LLM key, no LLM cost, and no web search on that
+        run. Omit it for the org default. Read `Job.column_name` for the columns the run returns
+        rather than assuming the LLM ones; the native run's `Reasoning` column is always null,
+        since the model returns a score rather than an explanation.
+        """
+        return _job(self._transport, self._transport.request("POST", "/validate/icp", json_body=request.to_wire()))
 
 
 class AsyncDiscogenResource(AsyncAPIResource):
     @api_route("POST", "/discogen/process")
     async def process(self, request: DiscoGenProcessRequest) -> AsyncJob:
+        """Run a research prompt against a list of domains.
+
+        `integration_id` takes an LLM provider integration UUID, or `NATIVE_ICP_ENGINE` to score
+        an ICP validation prompt with DiscoLike's own model. Omit it for the org default.
+        """
         response = await self._transport.request("POST", "/discogen/process", json_body=request.to_wire())
-        return AsyncJob(self._transport, task_family=FAMILY_DISCOGEN, task_id=response.json()["task_id"])
+        return _async_job(self._transport, response)
 
     @api_route("POST", "/discogen/process-personas")
     async def process_personas(self, request: DiscoGenPersonaProcessRequest) -> AsyncJob:
         response = await self._transport.request("POST", "/discogen/process-personas", json_body=request.to_wire())
-        return AsyncJob(self._transport, task_family=FAMILY_DISCOGEN, task_id=response.json()["task_id"])
+        return _async_job(self._transport, response)
 
     @api_route("GET", "/discogen/models")
     async def models(self) -> DiscogenModels:
@@ -72,5 +113,13 @@ def job(self, task_id: str) -> AsyncJob:
 class AsyncValidateResource(AsyncAPIResource):
     @api_route("POST", "/validate/icp")
     async def icp(self, request: ValidateIcpRequest) -> AsyncJob:
+        """Validate domains against an ICP description.
+
+        `integration_id` takes an LLM provider integration UUID, or `NATIVE_ICP_ENGINE` to score
+        with DiscoLike's own ICP-fit model: no LLM key, no LLM cost, and no web search on that
+        run. Omit it for the org default. Read `AsyncJob.column_name` for the columns the run
+        returns rather than assuming the LLM ones; the native run's `Reasoning` column is always
+        null, since the model returns a score rather than an explanation.
+        """
         response = await self._transport.request("POST", "/validate/icp", json_body=request.to_wire())
-        return AsyncJob(self._transport, task_family=FAMILY_DISCOGEN, task_id=response.json()["task_id"])
+        return _async_job(self._transport, response)
diff --git a/packages/discolike/tests/test_discogen.py b/packages/discolike/tests/test_discogen.py
index 67e0bab..0741b1c 100644
--- a/packages/discolike/tests/test_discogen.py
+++ b/packages/discolike/tests/test_discogen.py
@@ -12,6 +12,7 @@
 from discolike.requests import DiscoGenPersonaProcessRequest
 from discolike.requests import DiscoGenProcessRequest
 from discolike.requests import ValidateIcpRequest
+from discolike.resources.discogen import NATIVE_ICP_ENGINE
 from discolike_testkit import AsyncClientFactory
 from discolike_testkit import ClientFactory
 
@@ -280,3 +281,108 @@ def test_route_metadata_stamped() -> None:
     assert get_discolike_route(DiscogenResource.models) == ("GET", "/discogen/models", True)
     assert get_discolike_route(DiscogenResource.job) is None
     assert get_discolike_route(ValidateResource.icp) == ("POST", "/validate/icp", True)
+
+
+def test_validate_icp_native_sentinel_serializes_and_exposes_columns(make_client: ClientFactory) -> None:
+    seen = {}
+
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        seen["body"] = json.loads(request.content)
+        return httpx2.Response(
+            200,
+            json={
+                "task_id": "val-native",
+                "column_name": ["ICP Fit", "ICP Score", "Reasoning"],
+                "status": "in_progress",
+                "total_domains": 1,
+            },
+        )
+
+    with make_client(handler) as client:
+        job = client.validate_icp(
+            ValidateIcpRequest(
+                icp_text="Cybersecurity for SMBs",
+                domains=["gusto.com"],
+                integration_id=NATIVE_ICP_ENGINE,
+            )
+        )
+
+    assert NATIVE_ICP_ENGINE == "native-icp"
+    assert seen["body"]["integration_id"] == "native-icp"
+    assert job.task_id == "val-native"
+    assert job.column_name == ["ICP Fit", "ICP Score", "Reasoning"]
+
+
+async def test_validate_icp_async_native_sentinel_serializes_and_exposes_columns(
+    make_async_client: AsyncClientFactory,
+) -> None:
+    seen = {}
+
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        seen["body"] = json.loads(request.content)
+        return httpx2.Response(
+            200, json={"task_id": "val-native-async", "column_name": ["ICP Fit", "ICP Score", "Reasoning"]}
+        )
+
+    async with make_async_client(handler) as client:
+        job = await client.validate_icp(
+            ValidateIcpRequest(icp_text="q", domains=["a.com"], integration_id=NATIVE_ICP_ENGINE)
+        )
+
+    assert seen["body"]["integration_id"] == "native-icp"
+    assert job.column_name == ["ICP Fit", "ICP Score", "Reasoning"]
+
+
+def test_validate_icp_llm_run_reports_its_own_columns(make_client: ClientFactory) -> None:
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        return httpx2.Response(200, json={"task_id": "val-llm", "column_name": ["Fit", "Confidence", "Reasoning"]})
+
+    with make_client(handler) as client:
+        job = client.validate_icp(ValidateIcpRequest(icp_text="q", domains=["a.com"], integration_id="int-1"))
+
+    assert job.column_name == ["Fit", "Confidence", "Reasoning"]
+
+
+def test_validate_icp_column_name_is_none_when_absent(make_client: ClientFactory) -> None:
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        return httpx2.Response(200, json={"task_id": "val-bare"})
+
+    with make_client(handler) as client:
+        job = client.validate_icp(ValidateIcpRequest(icp_text="q", domains=["a.com"]))
+
+    assert job.column_name is None
+
+
+def test_process_native_icp_sentinel_serializes(make_client: ClientFactory) -> None:
+    seen = {}
+
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        seen["body"] = json.loads(request.content)
+        return httpx2.Response(200, json={"task_id": "dg-native-icp", "column_name": ["ICP Fit"]})
+
+    with make_client(handler) as client:
+        job = client.discogen.process(
+            DiscoGenProcessRequest(
+                query="Mandatory:\nUS-based\n\nReject if:\nagency",
+                domains=["a.com"],
+                integration_id=NATIVE_ICP_ENGINE,
+            )
+        )
+
+    assert seen["body"]["integration_id"] == "native-icp"
+    assert job.column_name == ["ICP Fit"]
+
+
+def test_native_icp_engine_is_exported_from_package_root() -> None:
+    import discolike
+
+    assert discolike.NATIVE_ICP_ENGINE == NATIVE_ICP_ENGINE
+    assert "NATIVE_ICP_ENGINE" in discolike.__all__
+
+
+def test_reattached_job_has_no_column_name(make_client: ClientFactory) -> None:
+    def handler(request: httpx2.Request) -> httpx2.Response:
+        pytest.fail("job() must not perform an HTTP request")
+
+    with make_client(handler) as client:
+        assert client.discogen.job("dg-existing").column_name is None
diff --git a/packages/discolike/tests/test_jobs.py b/packages/discolike/tests/test_jobs.py
index 1cf42a7..cba2095 100644
--- a/packages/discolike/tests/test_jobs.py
+++ b/packages/discolike/tests/test_jobs.py
@@ -59,7 +59,7 @@ def test_status_exposes_cost_metadata_and_warnings() -> None:
     payload = {
         "status": "completed",
         "progress": 100,
-        "results": {"a.com": "yes"},
+        "results": {"a.com": "Yes"},
         "estimated_cost": 0.0283,
         "warnings": ["Search provider out of credits"],
         "cost_metadata": {