deepseekplugins

DeepSeek Harness plugin

dsh-ipcalc

IP & subnet math toolbox for DeepSeek Harness (dsh): IPv4 subnet layouts, CIDR summarization and IPv4/IPv6 parsing with RFC 5952 normalization and IANA classification — zero runtime dependencies

Tools & Capabilities
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Source facts

Repository
TYEclipse/dsh-ipcalc
Latest update
Aug 20, 2026
Category
Tools & Capabilities
GitHub stars
1
Format
plugin
Catalog evidence
Upstream dsh.bundle evidence
Evidence path
package.json#dsh.bundle
Checked against
0.1.0-rc.8
Upstream check date
2026-08-20

This evidence comes from the upstream catalog. This site has not installed, run, or security-reviewed the plugin.

Install

Start with a prompt that asks an agent to review the GitHub repository and source. Switch to the command if you want to install it yourself.

Copy this prompt into DSH, Codex, or another agent and ask it to review the GitHub repository and source first.

Do not install or run any commands yet. Read this plugin's GitHub repository, README, and relevant source code. Then answer the questions below clearly and directly so I can decide whether it fits my needs:

1. What is this plugin, and what problem does it solve?
2. Who is it for, and what are its typical use cases?
3. How is it used after installation? Include one minimal example.
4. What known limitations or privacy, security, compatibility, or maintenance risks does it have?
5. Give a clear recommendation: recommend, conditionally recommend, or do not recommend, with reasons.

Distinguish statements documented by the repository, inferences from source code, and unknowns. If evidence is insufficient, say so explicitly. Do not guess or simply repeat the README.

GitHub: https://github.com/TYEclipse/dsh-ipcalc
Plugin: dsh-ipcalc
Author: TYEclipse

Check the source files

Read the README and other files from this plugin directory before installing.

File explorer3 files
README.mdSource · read only

dsh-ipcalc

IP & subnet math toolbox for DeepSeek Harness (dsh). Three pure-math tools — zero runtime dependencies, no network I/O — so agents stop doing subnet arithmetic in their heads (where they frequently get it wrong).

Tools

ToolWhat it does
ipv4_subnetFull subnet layout for an IPv4 CIDR: network, broadcast, netmask, wildcard, host range, address counts, integer forms and IANA classes
ipv4_summarizeReduce a list of IPv4 addresses/ranges to the minimal covering CIDR list (merge + supernet)
ip_parseValidate, normalize (RFC 5952) and classify any IPv4/IPv6 address, including embedded IPv4-in-IPv6 forms

Install

dsh plugin --profile <your-profile> add github:TYEclipse/dsh-ipcalc

Usage

ipv4_subnet("192.168.1.25/24")
→ network 192.168.1.0/24
  netmask 255.255.255.0  wildcard 0.0.0.255  broadcast 192.168.1.255
  host range 192.168.1.1 – 192.168.1.254  (254 usable of 256)
  classes: network=private  host=private

ipv4_subnet("10.10.10.10/255.255.255.248")   # dotted-mask input works too
→ network 10.10.10.8/29  (6 usable hosts)

ipv4_summarize(["10.0.0.0/24", "10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"])
→ ["10.0.0.0/22"]

ip_parse("::ffff:192.168.1.1")
→ IPv6, class ipv4_mapped, normalized ::ffff:c0a8:101 (embeds 192.168.1.1)

Semantics

  • Exact arithmetic — all math uses plain double arithmetic on 32-bit integers

(values up to 2³² are exactly representable), so there is no bitwise-overflow risk.

  • /31 follows RFC 3021 — both addresses are reported as usable (point-to-point links).
  • /32 is a single host — first/last host equal the address itself.
  • Bare addresses are treated as /32; dotted netmasks (/255.255.255.248) are

accepted anywhere a prefix length is; non-contiguous masks are rejected.

  • RFC 5952 canonicalization — IPv6 is lowercased, leading zeros stripped, and the

longest (leftmost on ties) run of two or more zero hextets compressed to ::.

  • Classification follows the IANA special-purpose registries:

IPv4 unspecified / broadcast / loopback / private (10/8, 172.16/12, 192.168/16) / cgnat (100.64/10) / link_local (169.254/16) / documentation (192.0.2/24, 198.51.100/24, 203.0.113/24) / multicast (224/4) / reserved (240/4) / global; IPv6 unspecified / loopback / ipv4_mapped / ipv4_compatible / documentation (2001:db8::/32) / link_local (fe80::/10) / multicast (ff00::/8) / unique_local (fc00::/7) / global. Classification is best-effort for the common registry entries, not a full CIDR-overlap engine.

Development

pnpm install
pnpm build
pnpm test
pnpm lint

License

MIT

---

dsh-ipcalc（中文简介）

面向 DeepSeek Harness 的 IP 与子网数学工具箱，三个纯本地计算工具，零运行时依赖、无任何网络访问：

  • ipv4_subnet：给定 CIDR（支持 a.b.c.d/前缀、点分掩码、裸地址）输出完整子网布局——网络号、广播地址、子网掩码、反掩码、可用主机范围与数量、整数形式、IANA 分类（私网/环回/链路本地/CGNAT/文档段/组播/保留段等）。
  • ipv4_summarize：把一组 IPv4 地址/网段归并成最小覆盖 CIDR 列表（相邻合并 + 对齐超网）。
  • ip_parse：校验、规范化（RFC 5952）并分类任意 IPv4/IPv6 地址，识别 ::ffff:a.b.c.d 内嵌 IPv4 形式。

专门解决大模型心算子网边界常出错的问题；/31 遵循 RFC 3021，/32 视为单主机。

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