Harden ARR MCP tool surface and installer

This commit is contained in:
Mikei386
2026-08-28 13:05:21 +02:00
parent 0008dd3b3e
commit da6e762d72
9 changed files with 380 additions and 301 deletions
+138 -132
View File
@@ -3,6 +3,7 @@
CONCEPT:ECO-4.82 — gitlab-style organized per-service tool surface.
"""
import asyncio
import os
import json
import re
@@ -10,44 +11,23 @@ import secrets
import time
from typing import Any
from agent_utilities.mcp_utilities import dispatch, run_blocking
from fastmcp import FastMCP
from pydantic import Field
from arr_mcp.auth import get_sonarr_client
READ_ONLY_ACTIONS = frozenset(
{
"get_system_status", "get_health", "get_diskspace", "get_ping",
"get_series", "get_series_id", "get_series_lookup", "lookup_series",
"get_episode", "get_episode_id", "get_episodefile", "get_episodefile_id",
"get_calendar", "get_calendar_id", "get_history", "get_history_series",
"get_history_since", "get_queue", "get_queue_details", "get_queue_status",
"get_wanted_missing", "get_wanted_missing_id", "get_wanted_cutoff",
"get_wanted_cutoff_id", "get_qualityprofile", "get_qualityprofile_id",
"get_languageprofile", "get_languageprofile_id", "get_tag", "get_tag_id",
"get_tag_detail", "get_tag_detail_id", "get_command", "get_command_id",
"get_release",
}
)
PSEUDO_ACTIONS = frozenset(
{
"find_series",
"get_season_summary",
"search_releases",
"preview_episode_search",
"preview_release_grab",
}
)
WRITE_ACTIONS = frozenset({"start_episode_search", "grab_release"})
MAX_COLLECTION_ITEMS = 50
APPROVAL_TTL_SECONDS = 600
_APPROVALS: dict[str, tuple[float, str]] = {}
async def _call(client: Any, action: str, kwargs: dict[str, Any] | None = None) -> Any:
"""Call one known upstream API method without exposing dynamic dispatch."""
method = getattr(client, action)
return await asyncio.to_thread(method, **(kwargs or {}))
def _plain(value: Any) -> Any:
if hasattr(value, "model_dump") and callable(value.model_dump):
return value.model_dump()
@@ -173,9 +153,9 @@ def _compact_result(action: str, value: Any) -> Any:
async def _find_series(client: Any, kwargs: dict[str, Any]) -> dict[str, Any]:
query = str(kwargs.get("query", "")).strip()
if len(query) < 2:
raise ValueError("find_series requires params_json with a query of at least 2 characters")
raise ValueError("query must contain at least two characters")
limit = max(1, min(int(kwargs.get("limit", 8)), 15))
raw = _unwrap(await run_blocking(dispatch, client, "get_series", {}, service="arr-sonarr"))
raw = _unwrap(await _call(client, "get_series"))
words = [word for word in re.findall(r"[a-z0-9]+", query.casefold()) if len(word) > 1]
matches = []
for item in raw if isinstance(raw, list) else []:
@@ -197,26 +177,12 @@ async def _find_series(client: Any, kwargs: dict[str, Any]) -> dict[str, Any]:
async def _season_summary(client: Any, kwargs: dict[str, Any]) -> dict[str, Any]:
series_id = int(kwargs["series_id"])
season_number = int(kwargs["season_number"])
series = _unwrap(
await run_blocking(dispatch, client, "get_series_id", {"id": series_id}, service="arr-sonarr")
)
series = _unwrap(await _call(client, "get_series_id", {"id": series_id}))
episodes = _unwrap(
await run_blocking(
dispatch,
client,
"get_episode",
{"seriesId": series_id, "seasonNumber": season_number},
service="arr-sonarr",
)
await _call(client, "get_episode", {"seriesId": series_id, "seasonNumber": season_number})
)
files = _unwrap(
await run_blocking(
dispatch,
client,
"get_episodefile",
{"seriesId": series_id},
service="arr-sonarr",
)
await _call(client, "get_episodefile", {"seriesId": series_id})
)
selected_episodes = [
_compact_episode(item) for item in episodes
@@ -255,7 +221,7 @@ async def _search_releases(client: Any, kwargs: dict[str, Any]) -> dict[str, Any
query["episodeId"] = int(episode_id)
if season_number is not None:
query["seasonNumber"] = int(season_number)
raw = await run_blocking(dispatch, client, "get_release", query, service="arr-sonarr")
raw = await _call(client, "get_release", query)
raw = _unwrap(raw)
if release_group and isinstance(raw, list):
needle = release_group.casefold()
@@ -322,17 +288,9 @@ async def _resolve_episode_search(client: Any, kwargs: dict[str, Any]) -> dict[s
if series_id < 1 or season_number < 0:
raise ValueError("series_id and season_number must be non-negative identifiers")
series = _unwrap(
await run_blocking(dispatch, client, "get_series_id", {"id": series_id}, service="arr-sonarr")
)
series = _unwrap(await _call(client, "get_series_id", {"id": series_id}))
episodes = _unwrap(
await run_blocking(
dispatch,
client,
"get_episode",
{"seriesId": series_id, "seasonNumber": season_number},
service="arr-sonarr",
)
await _call(client, "get_episode", {"seriesId": series_id, "seasonNumber": season_number})
)
candidates = [
item for item in episodes
@@ -414,13 +372,7 @@ async def _start_episode_search(client: Any, kwargs: dict[str, Any]) -> dict[str
"scope": resolved["scope"],
}
command = _unwrap(
await run_blocking(
dispatch,
client,
"post_command",
{"name": "EpisodeSearch", "episodeIds": episode_ids},
service="arr-sonarr",
)
await _call(client, "post_command", {"data": {"name": "EpisodeSearch", "episodeIds": episode_ids}})
)
return {
"ok": True,
@@ -464,7 +416,7 @@ async def _resolve_release_grab(client: Any, kwargs: dict[str, Any]) -> dict[str
)
query = _release_query(kwargs)
raw = _unwrap(
await run_blocking(dispatch, client, "get_release", query, service="arr-sonarr")
await _call(client, "get_release", query)
)
matches = [
item for item in raw if isinstance(item, dict) and str(item.get("guid", "")) == guid
@@ -484,13 +436,7 @@ async def _resolve_release_grab(client: Any, kwargs: dict[str, Any]) -> dict[str
season_number = query.get("seasonNumber")
if season_number is not None:
episodes = _unwrap(
await run_blocking(
dispatch,
client,
"get_episode",
{"seriesId": query["seriesId"], "seasonNumber": season_number},
service="arr-sonarr",
)
await _call(client, "get_episode", {"seriesId": query["seriesId"], "seasonNumber": season_number})
)
if isinstance(episodes, list):
existing_file_count = sum(
@@ -587,13 +533,7 @@ async def _grab_release(client: Any, kwargs: dict[str, Any]) -> dict[str, Any]:
if not secrets.compare_digest(approval[1], resolved["fingerprint"]):
raise PermissionError("Approval ticket does not match this exact release grab")
result = _unwrap(
await run_blocking(
dispatch,
client,
"post_release",
resolved["raw_release"],
service="arr-sonarr",
)
await _call(client, "post_release", {"data": resolved["raw_release"]})
)
return {
"ok": True,
@@ -612,59 +552,125 @@ async def _grab_release(client: Any, kwargs: dict[str, Any]) -> dict[str, Any]:
def register_sonarr_tools(mcp: FastMCP) -> None:
@mcp.tool(tags={"sonarr"})
async def sonarr_action(
action: str = Field(
description="Choose one Sonarr operation. Use find_series only to resolve a TV-series name. For questions whether a release/group/season pack is AVAILABLE, immediately use search_releases with release_group and season_pack_only as requested; do not infer availability from existing library files or call get_season_summary first. If the user requests a SPECIFIC release, group, or complete season pack, NEVER use automatic episode search: use preview_release_grab with its exact GUID, wait for approval, then grab_release. preview_episode_search/start_episode_search automatically chooses releases and may immediately download them; use it only when the user accepts any suitable release."
),
params_json: str = Field(
default="{}",
description="JSON object encoded as a string. Common forms: find_series {\"query\":\"Title\"}; get_season_summary {\"series_id\":123,\"season_number\":2}; search_releases {\"series_id\":123,\"season_number\":2,\"release_group\":\"FuN\",\"season_pack_only\":true}; preview_release_grab {\"series_id\":123,\"season_number\":2,\"guid\":\"exact-guid-from-search\"}; preview_episode_search {\"series_id\":123,\"season_number\":2,\"episode_numbers\":[2,3]}. For grab_release or start_episode_search reuse the exact preview scope and add confirm:true plus approval_ticket.",
),
async def sonarr_find_series(
query: str = Field(description="Series title or title fragment, for example Mord ist ihr Hobby."),
limit: int = Field(default=8, ge=1, le=15),
) -> Any:
"""USE ONLY for TV-series tasks managed by Sonarr: identify a series, inspect missing episodes, search configured indexers, grab one explicitly selected and approved release, or start an approved automatic missing-episode search. A specific season pack/release must use preview_release_grab then grab_release; automatic episode search is not equivalent. DO NOT use for movies (use Radarr), public-web research, media playback, filesystem copying, or direct URL downloads. Read-only by default; monitoring is never changed."""
if action in {"list_actions", "help", "actions"}:
return {
"service": "sonarr",
"access_mode": "write" if os.environ.get("ARR_MCP_WRITE", "").strip().lower() in ("1", "true", "yes", "on") else "read-only",
"actions": sorted(READ_ONLY_ACTIONS),
"write_actions": sorted(WRITE_ACTIONS) if os.environ.get("ARR_MCP_WRITE", "").strip().lower() in ("1", "true", "yes", "on") else [],
"preferred_compact_actions": sorted(PSEUDO_ACTIONS),
}
allow_write = os.environ.get("ARR_MCP_WRITE", "").strip().lower() in (
"1", "true", "yes", "on"
)
if action in READ_ONLY_ACTIONS | PSEUDO_ACTIONS:
pass
elif allow_write and action in WRITE_ACTIONS:
pass
else:
if allow_write:
raise PermissionError(
f"Sonarr MCP write mode is enabled, but action '{action}' "
"is not in the allowed write set. Allowed: "
f"{sorted(WRITE_ACTIONS)}"
)
raise PermissionError(
f"Sonarr action '{action}' is blocked by the server-side "
"read-only policy. Set ARR_MCP_WRITE=1 to enable write mode."
)
"""Find a Sonarr series by name. READ ONLY. Never changes monitoring and never starts a search or download."""
client = get_sonarr_client()
kwargs = {k: v for k, v in json.loads(params_json).items() if v is not None}
if action == "find_series":
return await _find_series(client, kwargs)
if action == "get_season_summary":
return await _season_summary(client, kwargs)
if action == "search_releases":
return await _search_releases(client, kwargs)
if action == "preview_episode_search":
return await _preview_episode_search(client, kwargs)
if action == "preview_release_grab":
return await _preview_release_grab(client, kwargs)
if action == "start_episode_search":
return await _start_episode_search(client, kwargs)
if action == "grab_release":
return await _grab_release(client, kwargs)
result = await run_blocking(
dispatch, client, action, kwargs, service="arr-sonarr"
return await _find_series(client, {"query": query, "limit": limit})
@mcp.tool(tags={"sonarr"})
async def sonarr_get_season_summary(
series_id: int = Field(description="Exact Sonarr series id returned by sonarr_find_series."),
season_number: int = Field(ge=0, description="Season number."),
) -> Any:
"""Return episodes and existing files for one Sonarr season. READ ONLY. File names do not prove audio language."""
return await _season_summary(
get_sonarr_client(),
{"series_id": series_id, "season_number": season_number},
)
@mcp.tool(tags={"sonarr"})
async def sonarr_search_releases(
series_id: int = Field(description="Exact Sonarr series id."),
season_number: int | None = Field(default=None, ge=0),
episode_id: int | None = Field(default=None, ge=1),
release_group: str = Field(default="", description="Optional release-group filter, for example FuN."),
season_pack_only: bool = Field(default=False, description="Only complete season packs. Requires season_number."),
) -> Any:
"""Search Sonarr's configured indexers and return compact matching releases. READ ONLY: does not alter monitoring, start automatic search, grab, or download anything."""
return await _search_releases(
get_sonarr_client(),
{
"series_id": series_id,
"season_number": season_number,
"episode_id": episode_id,
"release_group": release_group,
"season_pack_only": season_pack_only,
},
)
@mcp.tool(tags={"sonarr"})
async def sonarr_system_status() -> Any:
"""Return compact Sonarr version and runtime status. READ ONLY."""
return _compact_result("get_system_status", await _call(get_sonarr_client(), "get_system_status"))
if os.environ.get("ARR_MCP_WRITE", "").strip().lower() not in ("1", "true", "yes", "on"):
return
@mcp.tool(tags={"sonarr", "write"})
async def sonarr_preview_release_grab(
series_id: int = Field(description="Exact Sonarr series id."),
guid: str = Field(description="Exact GUID returned by sonarr_search_releases."),
season_number: int | None = Field(default=None, ge=0),
episode_id: int | None = Field(default=None, ge=1),
force: bool = Field(default=False),
) -> Any:
"""Preview one exact release grab and issue a short-lived approval ticket. Does not download anything."""
return await _preview_release_grab(
get_sonarr_client(),
{
"series_id": series_id,
"guid": guid,
"season_number": season_number,
"episode_id": episode_id,
"force": force,
},
)
@mcp.tool(tags={"sonarr", "write"})
async def sonarr_grab_release(
series_id: int = Field(description="Same series id used for the preview."),
guid: str = Field(description="Same exact release GUID used for the preview."),
approval_ticket: str = Field(description="Ticket returned by sonarr_preview_release_grab."),
confirm: bool = Field(description="Must be true after explicit user approval."),
season_number: int | None = Field(default=None, ge=0),
episode_id: int | None = Field(default=None, ge=1),
force: bool = Field(default=False),
) -> Any:
"""Grab exactly one previously previewed release. WRITE: can immediately start a download."""
return await _grab_release(
get_sonarr_client(),
{
"series_id": series_id,
"guid": guid,
"approval_ticket": approval_ticket,
"confirm": confirm,
"season_number": season_number,
"episode_id": episode_id,
"force": force,
},
)
@mcp.tool(tags={"sonarr", "write"})
async def sonarr_preview_episode_search(
series_id: int = Field(description="Exact Sonarr series id."),
season_number: int = Field(ge=0),
episode_numbers: list[int] | None = Field(default=None, description="Optional episode numbers; omit for all missing episodes in the season."),
) -> Any:
"""Preview an automatic Sonarr episode search. Does not change monitoring or download anything."""
return await _preview_episode_search(
get_sonarr_client(),
{"series_id": series_id, "season_number": season_number, "episode_numbers": episode_numbers},
)
@mcp.tool(tags={"sonarr", "write"})
async def sonarr_start_episode_search(
series_id: int = Field(description="Same series id used for the preview."),
season_number: int = Field(ge=0),
approval_ticket: str = Field(description="Ticket returned by sonarr_preview_episode_search."),
confirm: bool = Field(description="Must be true after explicit user approval."),
episode_numbers: list[int] | None = Field(default=None),
) -> Any:
"""Start a previously previewed automatic episode search. WRITE: may immediately download releases."""
return await _start_episode_search(
get_sonarr_client(),
{
"series_id": series_id,
"season_number": season_number,
"episode_numbers": episode_numbers,
"approval_ticket": approval_ticket,
"confirm": confirm,
},
)
return _compact_result(action, result)