Borrowing it
Nothing to install: this file belongs to umbraco/Umbraco.Automate. 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/umbraco/Umbraco.Automate/v18/dev/.claude/skills/session-hook-config/SKILL.mdgit clone --depth 1 https://github.com/umbraco/Umbraco.AutomateWrote 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/umbraco/umbraco.automate/session-hook-config)<a href="https://agentmods.dev/skills/umbraco/umbraco.automate/session-hook-config"><img src="https://agentmods.dev/badge/skills/umbraco/umbraco.automate/session-hook-config/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/umbraco/umbraco.automate/session-hook-config"><img src="https://agentmods.dev/badge/skills/umbraco/umbraco.automate/session-hook-config.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00058 | $0.00710 |
| Opus 5 | $0.00029 | $0.00355 |
| Sonnet 5 | $0.00012 | $0.00142 |
| Haiku 4.5 | $0.00006 | $0.00071 |
Grade A, and why
session-hook-config scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
Claude Code web runs in a containerized environment that requires JWT-authenticated proxies for external network access. While tools like `curl`, `npm`, and `wget` work correctly with this proxy, .NET's HttpClient doesn' How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Session Start Hook for .NET Proxy Setup
This skill configures Claude Code to automatically handle .NET/NuGet proxy authentication when running in the Claude Code web environment.
Problem
Claude Code web runs in a containerized environment that requires JWT-authenticated proxies for external network access. While tools like curl, npm, and wget work correctly with this proxy, .NET's HttpClient doesn't properly handle the JWT authentication format, causing dotnet restore and dotnet build to fail with 401 errors.
Solution
We use px-proxy as an intermediary proxy that:
- Accepts unauthenticated connections locally (port 3128)
- Forwards requests to the upstream proxy with proper JWT authentication
- Allows .NET to work normally by pointing it at the local proxy
Files
.claude/scripts/setup-dotnet-proxy.sh
This script:
- Detects if running in Claude Code web environment (checks for JWT in proxy URL)
- Installs
px-proxyif not present - Starts px-proxy on port 3128 with upstream auth
- Exports proxy environment variables for .NET
.claude/settings.json
Configures the SessionStart hook to run the setup script when a Claude Code session begins.
Manual Usage
If the hook doesn't run automatically, you can manually set up the proxy:
# Source the setup script
source .claude/scripts/setup-dotnet-proxy.sh
# Then run dotnet commands
dotnet restore
dotnet build
Or run dotnet with explicit proxy:
# Start px-proxy manually
pip install px-proxy
export PX_PASSWORD="<jwt_token_from_HTTP_PROXY>"
px --server="<proxy_host:port>" --username="<container_id>" --auth=BASIC --port=3128 &
# Use local proxy for dotnet
export http_proxy="http://127.0.0.1:3128"
export https_proxy="http://127.0.0.1:3128"
dotnet restore
Local Development
When running locally (not in Claude Code web), the script detects that no JWT proxy is configured and skips the setup entirely. This means:
- Local development works normally without any proxy
- The script is safe to run in any environment
- No changes needed for local vs web development
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 First seen · 99 lines · 58 tokens per session scan A 826eb5cbd3ec
session-hook-config is a skill published in the GitHub repository umbraco/Umbraco.Automate (5 stars, last pushed today), licensed MIT. It adds 58 tokens to every session and 710 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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