Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/CrowdStrike/foundry-skillsnpx agentmods add skills/crowdstrike/foundry-skills/development-workflowWrote 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/development-workflow)<a href="https://agentmods.dev/skills/crowdstrike/foundry-skills/development-workflow"><img src="https://agentmods.dev/badge/skills/crowdstrike/foundry-skills/development-workflow/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/crowdstrike/foundry-skills/development-workflow"><img src="https://agentmods.dev/badge/skills/crowdstrike/foundry-skills/development-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 136 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Excessive Agency · line 144 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium MCP Rug Pull · line 284 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00141 | $0.04949 |
| Opus 5.5 | $0.00056 | $0.01980 |
| Sonnet 5.5 | $0.00028 | $0.00990 |
| Haiku 4.5 | $0.00014 | $0.00495 |
Grade A, and why
development-workflow 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 17d 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.
# IMPORTANT: Download specs inline with gh/curl. Do NOT spawn Explore agents for spec download. How it starts
The opening of the file, as written. The whole thing — 317 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Foundry Development Workflow
This skill owns the Foundry development flow. Follow the App Creation Flow below from user prompt to running app, scaffold with
foundry apps createand related CLI commands, delegate capability-specific content to the Foundry sub-skills, and hand-write only what the CLI can't generate (OpenAPI content, workflow logic, UI code).Don't hand Foundry app creation to superpowers:brainstorming or superpowers:writing-plans. They don't know the Foundry CLI and produce plans that hand-write manifest.yml and boilerplate files. They can supplement this flow (TDD discipline, code review), not replace it.
CRITICAL: add
--no-promptto every command that accepts it — without it, interactive prompts causeError: EOF. Thecreate,validate,deploy,release, anddeletecommands all accept it (apps deletealso needs--force-delete). Three reject it and fail withunknown flag:foundry version,apps list, andapps list-deployments. Verify withfoundry <command> --help. When a command fails, MUST NOT fall back tomkdir— fix the command and retry.CRITICAL: All
foundryapp commands MUST run from the app root directory (wheremanifest.ymllives). The CLI resolves manifest paths relative toos.Getwd(), not relative to the manifest's location. Runningfoundry apps validate,foundry apps deploy, orfoundry ui runfrom a subdirectory (e.g.,ui/extensions/my-ext/) causes doubled paths and misleading "file not found" errors. Aftercd-ing into a subdirectory fornpm install && npm run build, alwayscdback to the app root before running anyfoundry apps *orfoundry ui *command. Commands that work from anywhere:foundry version,foundry profile *,foundry apps list.
This skill coordinates the full Falcon Foundry app lifecycle — from parsing requirements through scaffolding, implementation, and deployment. It delegates capability-specific work to sub-skills that know the platform details.
What ships with it
6 files 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.
- 17d ago Changed 7d00fc6c614b
- 19d ago Changed · -17 lines 199db1266cf4
- 25d ago Changed · +6 lines 383ceff24572
- 27d ago Changed · +17 lines 8d817e804388
- 1mo ago First seen · 311 lines · 141 tokens per session scan A a70e8b49b182
development-workflow is a skill published in the GitHub repository CrowdStrike/foundry-skills (35 stars, last pushed 2d ago), licensed MIT. It adds 141 tokens to every session and 4,949 once invoked, about $0.0006 per session on Opus 5.5. 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 2026-08-30.
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