MCP Tools Reference

Luciq’s MCP Server provides 10 tools grouped by problem areas

The details and context for each tool are detailed below.

1. App Context

1.1 list_applications

What it does

Returns all applications accessible to your account.

Use this when

• Setting up your MCP config and not sure which slug / mode to use.

• You work across multiple apps and want a quick list in the IDE.

Parameters

None required.

Optional:

• platform: ios, android, react_native, flutter

• limit, offset

Key Fields

• slug — Identifier used in most tools

• name — Display name

• token — Needed for the Reviews tool

• platform — App platform

• mode — App environment

• created_at — Timestamp

Usage Examples

• “List all my applications.”

• “Show only iOS applications.”

• “Which apps do I have access to?”

2. Crash-Level Debugging

2.1 list_crashes

What it does

Shows crash groups for an app: how often they happen, how many users they affect, and basic cause.

Use this when

• You want to know “what should we fix first?”

• You’re scanning production for new, recent, or high-impact crashes.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

Useful Filters

• date_ms (time window)

• status_id (open, closed, in progress)

• devices, os_versions

• app_versions

• current_views, teams, platform

Key Fields

• number — Crash ID

• exception — Main exception message

• crash_cause — File/function of failure

• crash_type — Fatal or non-fatal

• occurrences_counter — Total occurrences

• affected_users_counter — Unique users affected

• app_version — Version where it occurred

• last_occurred_at — Latest timestamp

• severity / level — Severity indicators

Usage Examples

• “Show production crashes for the last 7 days.”

• “List crashes for version 3.0.1.”

• “Show open crashes only.”

• “What are the top Android crashes?”

2.2 crash_details

What it does

Shows everything we know about a single crash (stack, versions, status, severity).

Use this when

You need to investigate or reproduce the crash.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

• number crash number

Key Fields

• exception — Full exception

• exception_name — Exception class/type

• crash_cause — Main file/line

• stack_frames[] — Parsed stack trace

• min_app_version, max_app_version — Affected versions

• crash_type — Fatal/non-fatal

• status_id — Current status

• team — Assigned team

• sdk_version — SDK version

• package / ndk_info / path — Platform extra fields

Usage Examples

• “Show details for crash #12.”

• “Explain the stack trace for crash 45.”

• “Which file caused crash #17?”

• “What versions are affected by crash 5?”

2.3 crash_patterns

What it does

Groups a crash’s occurrences by device, app version, OS, view, etc. to show where it clusters.

Use this when

• You want to understand where a crash is concentrated.

• You want to answer: “Is this crash mostly on Pixel 8? On Android 14? On version 3.0.4?”

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

• number crash number

• pattern_key: devices, oses, app_versions, current_views, app_status, experiments

Key Fields

• value — Group label (device, OS, version, etc.)

• occurrences_count — Occurrences in that bucket

• first_seen, last_seen — Timestamp range

Usage Examples

• “Break down crash #20 by device.”

• “Show OS patterns for crash #12.”

• “Which views are tied to crash #3?”

• “Group crash #5 by app versions.”

3. Occurrences Deep Dive

3.1 list_occurences_tokens

What it does

Lists individual occurrences of a crash as ULID tokens, so you can pick specific ones to inspect.

Use this when

• You want to inspect or debug specific sessions.

• You want to drill down from a crash group to specific user/device sessions.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

• number crash number

Useful Filters

• Foreground/background

• Device model

• OS version

• App version

• Experiments

• View/screen

• Date range

Key Fields

• states_tokens[] — ULIDs for occurrences

• total_occurrences — Count of matches

Usage Examples

• “List all occurrences for crash #28.”

• “Show only foreground occurrences.”

• “Which iOS 17 devices experienced crash 5?”

• “List occurrences from Pixel devices.”

3.2 get_occurrence_details

What it does

Shows the exact context of one crash occurrence: device, OS, memory, storage, app status, user, and log URLs.

Use this when

You need to reproduce or understand a single session.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

• number crash number

• ulid state/occurrence ULID token (obtained from list_occurrences_tokens)

Key Fields

state.fields:

• app_version — Version at crash moment

• device, os — Device info

• current_view — Active screen

• app_status — Foreground/background

• memory, storage — Resource usage

• country, city — Location

• screen_size, density — Display metrics

• reported_at — Timestamp

• email, user_name — User identity

logs:

• Downloadable compressed logs

• Experiment logs

user:

• Email, UUID, name

exception_message:

• Exception for this specific occurrence

Usage Examples

• “Show occurrence details for token X.”

• “Which device caused this occurrence?”

• “Show logs for the earliest occurrence of crash #8.”

• “What view was active during this crash?”

4. Stability Beyond Crashes (App Hangs)

4.1 list_app_hangs

What it does

Shows grouped hang events (UI freezes) for your application.

The server automatically chooses:

• FATAL_UI_HANG for iOS

• ANDROID_FATAL_HANG for Android

• Both for cross-platform apps

Use this when

You want to find “the app froze for me” issues, not just crashes.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

Useful Filters

Same as crashes: filters.date_ms, status_id, app_versions, devices, os_versions, platform, current_views

Key Fields

• number — Hang ID

• crash_type — Hang classification

• exception — Hang summary

• crash_cause — Where it froze

• occurrences_counter — Total hangs

• affected_users_counter — Unique impacted users

• platform, app_version

• last_occurred_at — Recent hang timestamp

Usage Examples

• “Show hangs in production for the last 14 days.”

• “List iOS hangs only.”

• “Which hangs are still open?”

• “What views cause most UI hangs?”

5. User-Reported Issues

5.1 list_bugs

What it does

Shows user-reported bugs (reported via Luciq’s SDK), with simple filtering.

Use this when

• You want to see user-submitted issues.

• You’re scanning for new or high-priority bugs in a release.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

Useful Filters

• Status: new, closed, in-progress

• Priority: trivial → blocker

• App version

Key Fields

• number — Bug ID

• title — User-entered title

• email — Reporter

• priority_id, status_id

• reported_at, last_activity

• categories

• duplicated_bugs_count

Usage Examples

• “Show new bugs for version 3.3.”

• “List all open bugs.”

• “Show bugs reported today.”

• “Which bugs are highest priority?”

5.2 bug_details

What it does

Returns detailed bug information including logs, user data, and device metadata.

Use this when

You need full context to reproduce the bug.

Required

• slug application slug

• mode beta, production, staging, alpha, qa, development

• number bug number

Key Fields

Top-level:

• title, type — Bug title & type

• priority_id, status_id — Bug priority & status

• reported_at, last_activity — When it was reported, last update time

• email, tags — Reporter’s email, tags

• categories, team — Assigned categories, team

state.fields (context):

• os, device, country, city

• app_version, sdk_version

• current_view

• screen_size, density

• bundle_id

• user_attributes

• duration (session length)

state.logs:

• user_steps, network_log, sessions_profiler, etc. with url and is_empty_array.

Usage Examples

• “Show details for bug #468.”

• “What steps did the user take?”

• “Which device was used?”

• “Show the network log for this bug.”

6. User Sentiment & Store Ratings

6.1 list_reviews

What it does

Lists app reviews (e.g., from store/native/custom prompts) with filters for rating, version, country, etc.

Use this when

• You want to correlate user feedback with app stability.

• You want to see 1–2 star reviews for a release.

• You’re checking if a performance or crash issue shows up in user feedback.

Required

• application_token App Token

Useful Filters

• date_ms.gte / lte

• app_version

• rating – array of star ratings [1–5]

• country

• device

• prompt_type – custom, native, app_store

• os (for cross-platform)

Key Fields

• title, body — Review content

• star_rating — 1–5 stars

• username, country

• app_version, device

• date

• has_suspected_sessions — Linked to stability issues

• has_custom_suspected_sessions

Usage Examples

• “Show 1-star reviews for version 3.0.”

• “List negative reviews from the US.”

• “Show native prompt reviews only.”

• “What are the most recent app store reviews?”