io.github.codelipenghui/mcp-mat
NPM · MCP-MAT · SCANNED SEP 25
Headless Eclipse MAT MCP server for Java heap dump analysis
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 96 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (Apache-2.0).Pass
- Actively maintained (last published 190 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability54
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 440 tokens (~73/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management83
- Stability observed for 25 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage70
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 9% of tool parameters carry a description.Partial
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "mat_oql_query" implies "execute" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the io.github.codelipenghui/mcp-mat server?
io.github.codelipenghui/mcp-mat runs locally as an npm package, launched with npx -y mcp-mat. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · mcp-mat
claude mcp add codelipenghui-mcp-mat -- npx -y mcp-mat
{
"mcpServers": {
"codelipenghui-mcp-mat": {
"command": "npx",
"args": [
"-y",
"mcp-mat"
]
}
}
} {
"servers": {
"codelipenghui-mcp-mat": {
"command": "npx",
"args": [
"-y",
"mcp-mat"
]
}
}
} codex mcp add codelipenghui-mcp-mat -- npx -y mcp-mat
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"codelipenghui-mcp-mat": {
"type": "local",
"command": [
"npx",
"-y",
"mcp-mat"
],
"enabled": true
}
}
} openclaw mcp add codelipenghui-mcp-mat --command npx --arg -y --arg mcp-mat
mcp_servers:
codelipenghui-mcp-mat:
command: "npx"
args: ["-y", "mcp-mat"] {
"McpServers": {
"codelipenghui-mcp-mat": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"mcp-mat"
]
}
}
} assistant mcp add codelipenghui-mcp-mat -t stdio -c npx -a -y mcp-mat
{
"mcpServers": {
"codelipenghui-mcp-mat": {
"command": "npx",
"args": [
"-y",
"mcp-mat"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 −3
- Stability: pass → 0.80 functional
- 23 Sept 26 0
- Stability: 0.97 → pass security
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 −3
- Security disclosure: unverified → fail ▼ functional
- Stability: pass → 0.80 functional
- 16 Sept 26 0
- Stability: 0.97 → pass security
- Security disclosure: fail → unverified ▼ functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Analysed npm/mcp-mat@0.1.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
mat_healthcheck ~33
Validate MAT launcher and Java runtime availability.
| Name | Type | Req | Description |
|---|---|---|---|
| java_path | string | – | – |
| mat_home | string | – | – |
No output schema declared.
No examples provided.
mat_index_status ~29
Report whether MAT index artifacts already exist for a heap dump.
| Name | Type | Req | Description |
|---|---|---|---|
| heap_path | string | yes | – |
No output schema declared.
No examples provided.
mat_oql_query ~76
Execute a single MAT OQL query and return result artifacts.
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | – | – |
| heap_path | string | yes | – |
| limit | integer | – | – |
| oql | string | yes | – |
| timeout_sec | integer | – | – |
| unzip | boolean | – | – |
| xmx_mb | integer | – | – |
No output schema declared.
No examples provided.
mat_oql_spec ~25
Return MAT OQL parser-mode guidance, supported patterns, and known limitations.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
mat_parse_report ~61
Run a predefined MAT report headlessly and return generated artifacts.
| Name | Type | Req | Description |
|---|---|---|---|
| heap_path | string | yes | – |
| options | object | – | – |
| report_id | string | yes | – |
| timeout_sec | integer | – | – |
| xmx_mb | integer | – | – |
No output schema declared.
No examples provided.
mat_run_command ~216
Execute a named MAT analysis command headlessly and return result artifacts. Supports 56 built-in commands including: dominator_tree, path2gc, merge_shortest_paths, histogram, thread_overview, thread_details, collection_fill_ratio, gc_roots, find_strings, component_report, system_properties, and many more. Use mat_oql_query for OQL queries instead.
| Name | Type | Req | Description |
|---|---|---|---|
| command_args | string | – | Optional arguments for the command. Format depends on the command, e.g. an object address like '0x12345678' for path2gc, or a class pattern for histogram. |
| command_name | string | yes | MAT command name, e.g. histogram, dominator_tree, path2gc, thread_overview, collection_fill_ratio, gc_roots, find_strings, etc. |
| format | string | – | – |
| heap_path | string | yes | – |
| limit | integer | – | – |
| timeout_sec | integer | – | – |
| unzip | boolean | – | – |
| xmx_mb | integer | – | – |
No output schema declared.
No examples provided.
What is the io.github.codelipenghui/mcp-mat server?
io.github.codelipenghui/mcp-mat is listed in the public MCP registry as io.github.codelipenghui/mcp-mat. Headless Eclipse MAT MCP server for Java heap dump analysis. This page covers its npm package (mcp-mat).
Is the io.github.codelipenghui/mcp-mat server safe to use?
io.github.codelipenghui/mcp-mat scores 74 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 25 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.github.codelipenghui/mcp-mat server expose?
io.github.codelipenghui/mcp-mat exposes 6 tools: mat_healthcheck, mat_parse_report, mat_oql_query, mat_index_status, mat_run_command, mat_oql_spec. Their descriptions and schemas cost roughly 440 tokens of context every time the server is loaded.
Is the io.github.codelipenghui/mcp-mat server still maintained?
io.github.codelipenghui/mcp-mat is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the io.github.codelipenghui/mcp-mat server under?
io.github.codelipenghui/mcp-mat declares the Apache-2.0 licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.