Borrowing it
Nothing to install: this file belongs to frankbolero/dotnet-dump-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/frankbolero/dotnet-dump-mcp/main/.claude/skills/dndump/SKILL.mdgit clone --depth 1 https://github.com/frankbolero/dotnet-dump-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/frankbolero/dotnet-dump-mcp/dndump)<a href="https://agentmods.dev/skills/frankbolero/dotnet-dump-mcp/dndump"><img src="https://agentmods.dev/badge/skills/frankbolero/dotnet-dump-mcp/dndump/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/frankbolero/dotnet-dump-mcp/dndump"><img src="https://agentmods.dev/badge/skills/frankbolero/dotnet-dump-mcp/dndump.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 136 Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.Fix: Pin the image: image:tag or image@sha256:abc123
- medium MCP Rug Pull · line 144 Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.Fix: Pin the image: image:tag or image@sha256:abc123
- medium MCP Rug Pull · line 159 Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.Fix: Pin the image: image:tag or image@sha256:abc123
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00146 | $0.02756 |
| Opus 5.5 | $0.00058 | $0.01102 |
| Sonnet 5.5 | $0.00029 | $0.00551 |
| Haiku 4.5 | $0.00015 | $0.00276 |
Grade A, and why
dndump scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.
dndump — .NET dump analysis CLI
dndump is a per-invocation CLI over ClrMD. Each command starts, prints results, and exits — no
persistent process, no tool-manifest context cost. Prefer it over any MCP-server equivalent
whenever a shell is available.
Filter in the shell, not in your head. A dumpheap on a real dump can be thousands of rows.
Never dump a full unfiltered result into context to eyeball it — use --format json/tsv with
jq/grep/awk, or --limit, so only the rows you actually need cost tokens. See "Piping" below.
Selecting a dump
dndump use /path/to/dump.core # writes .dndump/session.json; validates the dump opens
dndump info # runtime, arch, DAC match, heap/segment/thread counts — always run this first
After use, every later command in the same directory tree needs no --dump. Resolution order:
--dump <path> flag → DNDUMP_PATH env var → .dndump/session.json (searched upward). Each shell
invocation is a fresh process with no inherited env, which is exactly why use exists — set it
once, not per command.
If dndump fails to load the dump locally (wrong OS/architecture for the dump, no local .NET
runtime matching it, or no matching DAC available), see "Docker fallback" below before concluding
the dump is unreadable.
Global options
| Option | Default | Notes |
|---|---|---|
--format md|json|tsv |
md |
json is a stable API contract (envelope {data, pagination}, camelCase, 16-hex addresses) — safe to jq against. tsv is header + tab-separated rows for grep/awk/cut. |
--limit <n> / --offset <n> |
50 / 0 |
Paging on every list command. dumpheap also accepts --top <n> as a friendlier alias for --limit (that command only). |
--sort <field> / --order asc|desc |
per command | Valid fields differ per command — run dndump <command> --help if unsure. |
--quiet |
off | Suppresses the informational header on stderr; doesn't affect stdout data. |
--dump <path>, --dac <path> |
— | Override dump/DAC resolution for one call. |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 199 lines · 146 tokens per session scan A faf72c0aa2bd
dndump is a skill published in the GitHub repository frankbolero/dotnet-dump-mcp (14 stars, last pushed 1mo ago), licensed MIT. It adds 146 tokens to every session and 2,756 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
dndump compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| dndumpfrankbolero/dotnet-dump-mcp | Skill | 14 | 1mo ago | MIT | A | 146 | Claude Code |
| dotnet-performancewieslawsoltes/Performance-Skill | Skill | 36 | 3mo ago | MIT | A | 42 | Claude Code, Codex |
| blazing-fast-dotnetmanagedcode/dotnet-skills | Skill | 508 | yesterday | MIT | A | 72 | Claude Code, Codex |
| profilingmanagedcode/dotnet-skills | Skill | 508 | yesterday | MIT | A | 119 | Claude Code, Codex |
| roslyn-codelensMarcelRoozekrans/roslyn-codelens-mcp | Skill | 70 | yesterday | MIT | A | 104 | Claude Code |
| cs0618-hunterjoslat/maf-doctor | Skill | 14 | 11d ago | MIT | A | 85 | Claude Code, Codex |
| nuget-diff-analyzerjoslat/maf-doctor | Skill | 14 | 11d ago | MIT | A | 56 | Claude Code, Codex |