Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add managedcode/dotnet-skills --skill signalrgit clone --depth 1 https://github.com/managedcode/dotnet-skillsWrote 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/managedcode/dotnet-skills/signalr)<a href="https://agentmods.dev/skills/managedcode/dotnet-skills/signalr"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/signalr/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/managedcode/dotnet-skills/signalr"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/signalr.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 | $0.00109 | $0.02705 |
| Opus 5.5 | $0.00044 | $0.01082 |
| Sonnet 5.5 | $0.00022 | $0.00541 |
| Haiku 4.5 | $0.00011 | $0.00270 |
Grade A, and why
signalr 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 1mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- dotnet-signalr — 91% identical, 11 lines differ
How it starts
The opening of the file, as written. The whole thing — 344 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SignalR
Trigger On
- building chat, notification, collaboration, or live-update features
- debugging hub lifetime, connection state, or transport issues
- deciding whether SignalR or another transport better fits the scenario
- implementing real-time broadcasting to groups of connected clients
- scaling SignalR across multiple servers
Documentation
- ASP.NET Core SignalR Overview
- SignalR Hubs
- SignalR API Design Considerations
- SignalR Production Hosting and Scaling
- SignalR Configuration
References
- patterns.md - Detailed hub patterns, streaming, groups, presence, and advanced messaging techniques
- anti-patterns.md - Common SignalR mistakes and how to avoid them
Workflow
- Use SignalR for broadcast-style or connection-oriented real-time features; do not force gRPC into hub-style fan-out scenarios.
- Model hub contracts intentionally and keep hub methods thin, delegating durable work elsewhere.
- Plan for reconnection, backpressure, auth, and fan-out costs instead of treating real-time messaging as stateless request/response.
- Use groups, presence, and connection metadata deliberately so scale-out behavior is understandable.
- If Native AOT or trimming is in play, validate supported protocols and serialization choices explicitly.
- Test connection behavior and failure modes, not just happy-path message delivery.
Current Upstream Notes
dotnet/aspnetcorev10.0.11is a servicing release and does not change the SignalR programming model. Keep guidance focused on hub contract design, reconnection, transport, authorization, and scale-out validation.- The August 2026 ASP.NET Core overview still positions SignalR for real-time server/client communication. After servicing updates, rerun at least one reconnect and group-broadcast smoke path because dependency updates can expose client/server package mismatches.
What ships with it
3 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.
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.
- 1mo ago First seen · 344 lines · 109 tokens per session scan A 7393a16feb1e
signalr is a skill published in the GitHub repository managedcode/dotnet-skills (496 stars, last pushed yesterday), licensed MIT. It adds 109 tokens to every session and 2,705 once invoked, about $0.0004 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.
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