microsoft/BCQuality is a structured knowledge base and skills library for Microsoft Business Central development. It records Business Central-specific rules and platform behaviors that coding agents or developers might otherwise get wrong. The catalogue entries provide the agents and skill that consume this guidance.
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/cross-app-agent-calls-need-your-public-apigit 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/cross-app-agent-calls-need-your-public-api)<a href="https://agentmods.dev/agents/microsoft/bcquality/cross-app-agent-calls-need-your-public-api"><img src="https://agentmods.dev/badge/agents/microsoft/bcquality/cross-app-agent-calls-need-your-public-api.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 5.1 | $0.00000 | $0.00265 |
| Opus 5 | $0.00000 | $0.00133 |
| Sonnet 5 | $0.00000 | $0.00053 |
| Haiku 4.5 | $0.00000 | $0.00026 |
Grade A, and why
cross-app-agent-calls-need-your-public-api 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 2d 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.
What it actually says
Other apps cannot call the toolkit APIs on your agent; publish your own API
Description
For isolation, Agent, Agent Task Builder, and related toolkit codeunits error when the target instance belongs to another app. There is no supported way to pass another extension's metadata provider into SetInstructions or Create. Partners who need to enqueue work must call a public API you own.
Best Practice
Expose a public codeunit in the agent app (Access = Public) whose procedures take User Security ID and forward to Agent / Agent Task Builder. Document that surface as the integration contract. Keep toolkit calls inside that app.
See sample: cross-app-agent-calls-need-your-public-api.good.al.
Anti Pattern
From app B, calling Agent.SetDisplayName or Agent.Create with app A's metadata provider. Detection signal: toolkit agent APIs used with an Agent Metadata Provider value not declared in the same app.
See sample: cross-app-agent-calls-need-your-public-api.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.
- 2d ago First seen · 27 lines · 0 tokens per session scan A f6ffc1caa807
cross-app-agent-calls-need-your-public-api is an agent published in the GitHub repository microsoft/BCQuality (206 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 265 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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