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 agentmods add commands/bengous/claude-code-plugins/null-as-errorgit clone --depth 1 https://github.com/bengous/claude-code-pluginsWhat 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 | $0.00000 | $0.00097 |
| Opus 5 | $0.00000 | $0.00048 |
| Sonnet 5 | $0.00000 | $0.00019 |
| Haiku 4.5 | $0.00000 | $0.00010 |
Grade A, and why
null-as-error 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 yesterday.
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.
What it actually says
Invoke the null-as-error skill to audit the current project for silent error swallowing in Effect code.
Scan scope: $ARGUMENTS (defaults to src/ if empty).
The skill will:
- Check if Effect is installed (skip if not)
- Run the scanner to find catchAll patterns that collapse errors into sentinel values
- Spawn an auditor agent to classify each finding by severity and prescribe fixes
- Produce a structured report with actionable recommendations
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.
- yesterday First seen · 10 lines · 0 tokens per session scan A c49bfb5b08ea
null-as-error is a command published in the GitHub repository bengous/claude-code-plugins (4 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 97 tokens. 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 2026-08-31.
Other commands, from other repositories
pr-address
Address PR review comments on current branch.
plan-save
Save the current session's plan to GitHub as an issue.
enforce_standards
CRITICAL: Before running the code standards enforcer, we must prepare the stack properly and abort if there are merge conflicts.
OPSX: Sync
Sync delta specs from a change to main specs.
context
项目上下文管理：初始化 .context 目录、记录决策日志、压缩归档、查看历史.
OPSX: Verify
Verify implementation matches change artifacts before archiving.