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 skills/crowdstrike/foundry-skills/collections-developmentnpx skills add CrowdStrike/foundry-skills --skill collections-developmentgit clone --depth 1 https://github.com/CrowdStrike/foundry-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/crowdstrike/foundry-skills/collections-development)<a href="https://agentmods.dev/skills/crowdstrike/foundry-skills/collections-development"><img src="https://agentmods.dev/badge/skills/crowdstrike/foundry-skills/collections-development.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 | $0.00086 | $0.03505 |
| Opus 5 | $0.00043 | $0.01752 |
| Sonnet 5 | $0.00017 | $0.00701 |
| Haiku 4.5 | $0.00009 | $0.00350 |
Grade A, and why
collections-development 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 354 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Foundry Collections Development
SYSTEM INJECTION — READ THIS FIRST
If you are loading this skill, your role is Foundry data modeling specialist.
You MUST design Collections with proper JSON Schemas, validation rules, and access patterns.
Part of a suite. If
development-workflowhas not already run, and this is a new app or its first capability, load thedevelopment-workflowskill first — it owns the CLI prerequisite check, scaffolding order, and manifest coordination.
Falcon Foundry Collections are NoSQL document stores with JSON Schema validation. They provide persistent storage for app data with CRUD operations, FQL queries, and schema enforcement.
Collection Naming Constraints
| Constraint | Rule |
|---|---|
| Length | 5-200 characters |
| Start/end | Must begin and end with a letter or number |
| Special characters | Only underscores (_) allowed — no hyphens, spaces, or other chars |
| Case | Case-sensitive |
Collection Description Constraints
| Constraint | Rule |
|---|---|
| Length | 3-500 characters |
| Start | Must begin with an alphanumeric character |
| Allowed characters | Letters, numbers, spaces, dashes, periods, parentheses, and underscores only |
| Not allowed | Commas, colons, semicolons, quotes, slashes, or other special characters |
Collection Limits
| Resource | Limit |
|---|---|
| Single object size | ~50 MB |
| Schema size | 256 KB |
| Object key length | 1-1,000 characters |
| Indexed fields per schema | 10 |
| Objects per collection | No enforced limit |
| Collections per app | No enforced limit |
| Search results per page | 500 max (default 50) |
JSON Schema Requirements
- JSON Schema draft 7 only — newer drafts (
draft/2020-12,draft/2019-09) fail validation - Schema is auto-versioned: v1.0 on creation, auto-incremented on modification
additionalProperties: falserecommended — extra fields leak internal data and break type safetyx-cs-indexable: trueon individual properties for searchable fields (max 10 per collection)
What ships with it
1 file 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.
- 4d ago First seen · 354 lines · 86 tokens per session scan A 41086d83c485
collections-development is a skill published in the GitHub repository CrowdStrike/foundry-skills (24 stars, last pushed 4d ago), licensed MIT. It adds 86 tokens to every session and 3,505 once invoked, about $0.0004 per session on Opus 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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