Borrowing it
Nothing to install: this file belongs to OPCFoundation/UA-.NETStandard. 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/OPCFoundation/UA-.NETStandard/master/.agents/skills/opcua-v20-migration/SKILL.mdgit clone --depth 1 https://github.com/OPCFoundation/UA-.NETStandardWrote 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/opcfoundation/ua-.netstandard/opcua-v20-migration)<a href="https://agentmods.dev/skills/opcfoundation/ua-.netstandard/opcua-v20-migration"><img src="https://agentmods.dev/badge/skills/opcfoundation/ua-.netstandard/opcua-v20-migration/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/opcfoundation/ua-.netstandard/opcua-v20-migration"><img src="https://agentmods.dev/badge/skills/opcfoundation/ua-.netstandard/opcua-v20-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00288 | $0.06765 |
| Opus 5 | $0.00144 | $0.03383 |
| Sonnet 5 | $0.00058 | $0.01353 |
| Haiku 4.5 | $0.00029 | $0.00677 |
Grade A, and why
opcua-v20-migration 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 9d 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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
26 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/Directory.Build.targets.example.xml 2.0 KB
- assets/PackageReference.example.xml 705 B
- README.md 4.8 KB
- references/analyzer-rules.md 22 KB
- references/compatibility-matrix.md 6.1 KB
- references/known-gaps.md 9.6 KB
- references/migration-patterns.md 22 KB
- references/package-install.md 7.2 KB
- references/runtime-shim.md 5.3 KB
- references/source-generator.md 11 KB
- references/stack-migration/alarms-model-change.md 5.3 KB
- references/stack-migration/certificates.md 23 KB
- references/stack-migration/configuration.md 8.7 KB
- references/stack-migration/encoders.md 9.6 KB
- references/stack-migration/identity.md 13 KB
- references/stack-migration/node-states.md 22 KB
- references/stack-migration/packages.md 9.0 KB
- references/stack-migration/pubsub.md 11 KB
- references/stack-migration/README.md 7.2 KB
- references/stack-migration/sessions-subscriptions.md 38 KB
- references/stack-migration/source-generation.md 8.2 KB
- references/stack-migration/telemetry.md 18 KB
- references/stack-migration/timeprovider.md 7.0 KB
- references/stack-migration/transport-listener-async.md 7.3 KB
- references/stack-migration/types.md 41 KB
- scripts/apply-codefixes.ps1 12 KB runs code
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.
- 9d ago Changed · +28 lines · +10 tokens per session 5e27f4789784
- 11d ago First seen · 344 lines · 278 tokens per session scan A b2cab0b46d9d
opcua-v20-migration is a skill published in the GitHub repository OPCFoundation/UA-.NETStandard (2,384 stars, last pushed today), with no licence file. It adds 288 tokens to every session and 6,765 once invoked, about $0.0014 per session on Opus 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.
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