droidasc-mcp

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asc_list_classes

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Lists Android APK class descriptors filtered by package or class prefix to help you identify relevant classes for analysis.

Instructions

List class descriptors, optionally filtered by package or class prefix.

Input Schema

Name	Required	Description	Default
`limit`	No	Maximum result page size in rows or source lines, server-capped
`offset`	No	Zero-based result offset; graph traversal requires zero
`prefix`	No	Literal class/package prefix, case-sensitive
`backend`	No	Engine; rust_asc is opt-in and reports unverified coverage	droidasc
`threads`	No	Positive ASC worker count; requested values above 32 are capped
`apk_path`	Yes	APK file path within configured allowed roots

Output Schema

Name	Required	Description	Default
`xml`	No
`code`	No
`kind`	No
`items`	No
`limit`	No
`total`	No
`module`	No
`offset`	No
`source`	No
`status`	No
`backend`	No
`message`	No
`sources`	No
`apk_path`	No
`coverage`	No
`has_more`	No
`input_id`	No
`truncated`	No
`apk_sha256`	No
`class_name`	No
`session_id`	No
`limitations`	No
`next_offset`	No
`artifact_path`	No
`artifact_sha256`	No
`backend_version`	No
`selected_modules`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed12 schema fields changedv0.2.5Oct 29, 2026

addedOutput schema / $defs / DexRow / properties / target_index

Added value: +{
+  "title": "Target Index",
+  "type": "integer"
+}

addedOutput schema / $defs / Source / properties / container_sha256

Added value: +{
+  "title": "Container Sha256",
+  "type": "string"
+}

addedOutput schema / $defs / Source / properties / container_size_bytes

Added value: +{
+  "title": "Container Size Bytes",
+  "type": "integer"
+}

addedOutput schema / $defs / Source / properties / logical_header_offset

Added value: +{
+  "title": "Logical Header Offset",
+  "type": "integer"
+}

addedOutput schema / $defs / Source / properties / logical_size_bytes

Added value: +{
+  "title": "Logical Size Bytes",
+  "type": "integer"
+}

addedOutput schema / $defs / Source / properties / module

Added value: +{
+  "title": "Module",
+  "type": "string"
+}

addedOutput schema / $defs / Source / properties / normalization

Added value: +{
+  "title": "Normalization",
+  "type": "string"
+}

addedOutput schema / $defs / Source / properties / original_dex_version

Added value: +{
+  "title": "Original Dex Version",
+  "type": "string"
+}

addedOutput schema / $defs / Source / properties / snapshot_entry

Added value: +{
+  "title": "Snapshot Entry",
+  "type": "string"
+}

addedOutput schema / $defs / Source / properties / stored_size_bytes

Added value: +{
+  "title": "Stored Size Bytes",
+  "type": "integer"
+}

addedOutput schema / properties / module

Added value: +{
+  "title": "Module",
+  "type": "string"
+}

addedOutput schema / properties / selected_modules

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "title": "Selected Modules",
+  "type": "array"
+}

Changed9 schema fields changedv0.2.4Oct 27, 2026

changedInput schema / properties / limit / description

Previous value: -"Positive result page size in rows or source lines, server-capped"New value: +"Maximum result page size in rows or source lines, server-capped"

removedOutput schema / $defs / DexRow / properties / instruction_offset / anyOf

Removed value: -[
-  {
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / $defs / DexRow / properties / instruction_offset / type
```
Added value: +[
+  "integer",
+  "null"
+]
```

removedOutput schema / $defs / DexRow / properties / offset_unit / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / $defs / DexRow / properties / offset_unit / type
```
Added value: +[
+  "string",
+  "null"
+]
```

removedOutput schema / $defs / DexRow / properties / target_dex_entry / anyOf

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / $defs / DexRow / properties / target_dex_entry / type
```
Added value: +[
+  "string",
+  "null"
+]
```

removedOutput schema / properties / next_offset / anyOf

Removed value: -[
-  {
-    "type": "integer"
-  },
-  {
-    "type": "null"
-  }
-]

addedOutput schema / properties / next_offset / type
```
Added value: +[
+  "integer",
+  "null"
+]
```

Changed9 schema fields changedv0.2.3Oct 23, 2026

addedInput schema / properties / apk_path / description

Added value: +"APK file path within configured allowed roots"

addedInput schema / properties / backend

Added value: +{
+  "default": "droidasc",
+  "description": "Engine; rust_asc is opt-in and reports unverified coverage",
+  "enum": [
+    "droidasc",
+    "rust_asc"
+  ],
+  "title": "Backend",
+  "type": "string"
+}

addedInput schema / properties / limit / description

Added value: +"Positive result page size in rows or source lines, server-capped"

addedInput schema / properties / offset / description

Added value: +"Zero-based result offset; graph traversal requires zero"

addedInput schema / properties / prefix / description

Added value: +"Literal class/package prefix, case-sensitive"

addedInput schema / properties / threads / description

Added value: +"Positive ASC worker count; requested values above 32 are capped"

addedOutput schema / $defs

Added value: +{
+  "DexRow": {
+    "additionalProperties": true,
+    "properties": {
+      "access": {
+        "enum": [
+          "read",
+          "write"
+        ],
+        "title": "Access",
+        "type": "string"
+      },
+      "access_flags": {
+        "title": "Access Flags",
+        "type": "integer"
+      },
+      "call_site_prototype": {
+        "title": "Call Site Prototype",
+        "type": "string"
+      },
+      "callee": {
+        "title": "Callee",
+        "type": "string"
+      },
+      "caller": {
+        "title": "Caller",
+        "type": "string"
+      },
+      "class_name": {
+        "title": "Class Name",
+        "type": "string"
+      },
+      "descriptor": {
+        "title": "Descriptor",
+        "type": "string"
+      },
+      "detail": {
+        "title": "Detail",
+        "type": "string"
+      },
+      "dex": {
+        "title": "Dex",
+        "type": "string"
+      },
+      "dex_entry": {
+        "title": "Dex Entry",
+        "type": "string"
+      },
+      "dispatch_kind": {
+        "title": "Dispatch Kind",
+        "type": "string"
+      },
+      "field_descriptor": {
+        "title": "Field Descriptor",
+        "type": "string"
+      },
+      "has_code": {
+        "title": "Has Code",
+        "type": "boolean"
+      },
+      "instruction": {
+        "title": "Instruction",
+        "type": "string"
+      },
+      "instruction_offset": {
+        "anyOf": [
+          {
+            "type": "integer"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Instruction Offset"
+      },
+      "kind": {
+        "title": "Kind",
+        "type": "string"
+      },
+      "matched": {
+        "title": "Matched",
+        "type": "string"
+      },
+      "method": {
+        "title": "Method",
+        "type": "string"
+      },
+      "method_descriptor": {
+        "title": "Method Descriptor",
+        "type": "string"
+      },
+      "name": {
+        "title": "Name",
+        "type": "string"
+      },
+      "offset_unit": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Offset Unit"
+      },
+      "opcode": {
+        "title": "Opcode",
+        "type": "string"
+      },
+      "parameter_types": {
+        "items": {
+          "type": "string"
+        },
+        "title": "Parameter Types",
+        "type": "array"
+      },
+      "raw": {
+        "title": "Raw",
+        "type": "string"
+      },
+      "reason": {
+        "title": "Reason",
+        "type": "string"
+      },
+      "relation": {
+        "title": "Relation",
+        "type": "string"
+      },
+      "return_type": {
+        "title": "Return Type",
+        "type": "string"
+      },
+      "source": {
+        "title": "Source",
+        "type": "string"
+      },
+      "storage": {
+        "enum": [
+          "static",
+          "instance"
+        ],
+        "title": "Storage",
+        "type": "string"
+      },
+      "string": {
+        "title": "String",
+        "type": "string"
+      },
+      "string_index": {
+        "title": "String Index",
+        "type": "integer"
+      },
+      "target": {
+        "title": "Target",
+        "type": "string"
+      },
+      "target_dex_entry": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "title": "Target Dex Entry"
+      },
+      "target_resolution": {
+        "title": "Target Resolution",
+        "type": "string"
+      },
+      "type_descriptor": {
+        "title": "Type Descriptor",
+        "type": "string"
+      },
+      "value": {
+        "title": "Value",
+        "type": "string"
+      }
+    },
+    "title": "DexRow",
+    "type": "object"
+  },
+  "Source": {
+    "additionalProperties": true,
+    "properties": {
+      "container_entry": {
+        "title": "Container Entry",
+        "type": "string"
+      },
+      "declared_class_count": {
+        "title": "Declared Class Count",
+        "type": "integer"
+      },
+      "dex_entry": {
+        "title": "Dex Entry",
+        "type": "string"
+      },
+      "dex_version": {
+        "title": "Dex Version",
+        "type": "string"
+      },
+      "path": {
+        "title": "Path",
+        "type": "string"
+      },
+      "sha256": {
+        "title": "Sha256",
+        "type": "string"
+      },
+      "size_bytes": {
+        "title": "Size Bytes",
+        "type": "integer"
+      }
+    },
+    "title": "Source",
+    "type": "object"
+  }
+}

addedOutput schema / properties

Added value: +{
+  "apk_path": {
+    "title": "Apk Path",
+    "type": "string"
+  },
+  "apk_sha256": {
+    "title": "Apk Sha256",
+    "type": "string"
+  },
+  "artifact_path": {
+    "title": "Artifact Path",
+    "type": "string"
+  },
+  "artifact_sha256": {
+    "title": "Artifact Sha256",
+    "type": "string"
+  },
+  "backend": {
+    "title": "Backend",
+    "type": "string"
+  },
+  "backend_version": {
+    "title": "Backend Version",
+    "type": "string"
+  },
+  "class_name": {
+    "title": "Class Name",
+    "type": "string"
+  },
+  "code": {
+    "title": "Code",
+    "type": "string"
+  },
+  "coverage": {
+    "title": "Coverage",
+    "type": "string"
+  },
+  "has_more": {
+    "title": "Has More",
+    "type": "boolean"
+  },
+  "input_id": {
+    "title": "Input Id",
+    "type": "string"
+  },
+  "items": {
+    "items": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "$ref": "#/$defs/DexRow"
+        }
+      ]
+    },
+    "title": "Items",
+    "type": "array"
+  },
+  "kind": {
+    "title": "Kind",
+    "type": "string"
+  },
+  "limit": {
+    "title": "Limit",
+    "type": "integer"
+  },
+  "limitations": {
+    "items": {
+      "type": "string"
+    },
+    "title": "Limitations",
+    "type": "array"
+  },
+  "message": {
+    "title": "Message",
+    "type": "string"
+  },
+  "next_offset": {
+    "anyOf": [
+      {
+        "type": "integer"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "title": "Next Offset"
+  },
+  "offset": {
+    "title": "Offset",
+    "type": "integer"
+  },
+  "session_id": {
+    "title": "Session Id",
+    "type": "string"
+  },
+  "source": {
+    "title": "Source",
+    "type": "string"
+  },
+  "sources": {
+    "items": {
+      "$ref": "#/$defs/Source"
+    },
+    "title": "Sources",
+    "type": "array"
+  },
+  "status": {
+    "enum": [
+      "ok",
+      "partial",
+      "error",
+      "not_applicable"
+    ],
+    "title": "Status",
+    "type": "string"
+  },
+  "total": {
+    "title": "Total",
+    "type": "integer"
+  },
+  "truncated": {
+    "title": "Truncated",
+    "type": "boolean"
+  },
+  "xml": {
+    "title": "Xml",
+    "type": "string"
+  }
+}

changedOutput schema / title

Previous value: -"asc_list_classesDictOutput"New value: +"LegacyResult"

First observedv0.1.1Sep 20, 2026

TDQS

C2.9/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that: no mention of pagination behavior, result caps, backend tradeoffs, or the fact that a fresh APK read may occur; it merely restates the filter capability.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence with no filler, which is well sized for a simple enumeration tool. It is efficient but borders on under-specified rather than maximally informative.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present and full schema coverage, the description needn't explain return values. However, for a six-parameter listing tool on an APK analysis surface it omits how prefix matching interacts with package versus class names and how this list relates to the sibling source/ref tools.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so all six parameters including prefix, backend, limit and offset are documented in the schema with semantics like case-sensitivity and server caps. The description only echoes that prefix filtering exists and adds no format or syntax detail, making the baseline 3 appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('List class descriptors') plus the optional filter scope, so an agent knows exactly what comes back. It does not differentiate itself from siblings like asc_get_class_source or asc_find_refs, which likely operate on the same class universe.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no when-to-use context, no exclusions, and never names an alternative. An agent cannot tell from this text whether to enumerate classes here versus resolving source via asc_get_class_source or refs via asc_find_refs.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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