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 agents/microsoft/bcquality/show-can-create-agent-does-not-block-code-creategit clone --depth 1 https://github.com/microsoft/BCQualityWrote 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/agents/microsoft/bcquality/show-can-create-agent-does-not-block-code-create)<a href="https://agentmods.dev/agents/microsoft/bcquality/show-can-create-agent-does-not-block-code-create"><img src="https://agentmods.dev/badge/agents/microsoft/bcquality/show-can-create-agent-does-not-block-code-create.svg" alt="Measured on agentmods" 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 | $0.00000 | $0.00287 |
| Opus 5 | $0.00000 | $0.00143 |
| Sonnet 5 | $0.00000 | $0.00057 |
| Haiku 4.5 | $0.00000 | $0.00029 |
Grade A, and why
show-can-create-agent-does-not-block-code-create 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
ShowCanCreateAgent only hides UI create, not programmatic create
Description
IAgentFactory.ShowCanCreateAgent controls whether the type appears in the in-client create UI. Returning false does not stop Agent.Create from AL. From 28.1, non-admins can discover extension agents unless this method (and agent configuration rights) restrict them. Models treat a false return as a hard create lock.
Best Practice
Use ShowCanCreateAgent to decide discovery. If only agent administrators should see the type, return Agent System Permissions.CurrentUserHasCanManageAllAgentsPermission. Enforce extra policy inside your own create API. Never assume UI hiding blocks code.
See sample: show-can-create-agent-does-not-block-code-create.good.al.
Anti Pattern
Returning exit(false) from ShowCanCreateAgent and then documenting that instances cannot be created, while page actions or other apps still call Agent.Create. Detection signal: ShowCanCreateAgent always false with no matching guard on programmatic create.
See sample: show-can-create-agent-does-not-block-code-create.bad.al.
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 · 27 lines · 0 tokens per session scan A 583c3a0e9296
show-can-create-agent-does-not-block-code-create is an agent published in the GitHub repository microsoft/BCQuality (204 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 287 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 2026-09-03.
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