doca-comch SKILL.md skillA
doca-comch from nvidia/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nvidia/skills/doca-comch@git:20261028.3d06e7ePins git:20261028.3d06e7e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nvidia/skills
- Path
skills/doca-comch/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261028.3d06e7e, committed Oct 28, 2026
- First version recorded
- Jul 17, 2026
- Size
- 12,369 bytes
- Repository stars
- 3,871
- License
- Apache-2.0
Use this skill when the user is doing hands-on DOCA Comch work on a host + BlueField pair — bringing up host ↔ DPU PCIe control-plane messaging, picking server (DPU) vs client (host) roles, choosing slow-path send-task / recv-callback vs fast-path producer / consumer, querying max-msg-size or max-clients capabilities, registering connection callbacks, or debugging DOCA_ERROR_* returns from the Comch API. Trigger even when the user does not explicitly mention "DOCA Comch" or "Comm Channel…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# DOCA Comch ## Examples - **"Send a control message from host to BlueField over PCIe."** — this is in scope. Pick server (DPU) vs client (host) and stay on the Comch send/recv path; do not fall back to TCP. - **"Connect callback never fires."** — check role, representor visibility, and the 2.5 rename overlay before rewriting the app as raw verbs. ## Instructions Follow Loading order below. Open the tasks companion for configure / modify / debug. Open the capabilities companion for slow-path vs fast-path and the 2.5 rename. Do not open every companion file. **Where to start:** This skill assumes DOCA is already installed and the user is doing **hands-on Comch work** on a BlueField + host pair with DOCA. Open the tasks companion if the user wants to *do* something (configure / build / modify / run / test / debug); open the capabilities companion when the question is *what can Comch express* on this version. If the user has not installed DOCA yet, route to `doca-setup/SKILL.md` first. If the user is asking *"is Comch even on this DOCA"* because the docs they read mention `doca-comm-channel`, route to ## Version compatibility for the 2.5 rename. …
Read the whole file at its exact version.
How to install
mdr add nvidia/skills/doca-comch@sha256:f1c8340356a5f52fThe line at the top of this page pins the label git:20261028.3d06e7e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_c53zn7qixsgc3mtk)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 17, 2026 and Oct 28, 2026, about one every 34 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261028.3d06e7e latest | 2026-10-28 | 3d06e7e | 12,369 B | A | view · diff |
| git:20261022.a4cf47e | 2026-10-22 | a4cf47e | 12,360 B | A | view · diff |
| git:20261014.bbb601a | 2026-10-14 | bbb601a | 12,733 B | A | view · diff |
| git:20260717.f64fa0e | 2026-07-17 | f64fa0e | 12,623 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12369 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nvidia/skills · 3,871 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_c53zn7qixsgc3mtk GET https://markdownregistry.com/api/v1/resolve?ref=nvidia/skills/doca-comch GET https://markdownregistry.com/api/v1/blob/f1c8340356a5f52f7a5bef20370e58d7042717bc8541c9dc20761dac52347a30
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.