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 skills add minsu-kang/make-custom-app-skill --skill skillgit clone --depth 1 https://github.com/minsu-kang/make-custom-app-skillWrote 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/minsu-kang/make-custom-app-skill/skill)<a href="https://agentmods.dev/skills/minsu-kang/make-custom-app-skill/skill"><img src="https://agentmods.dev/badge/skills/minsu-kang/make-custom-app-skill/skill/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/minsu-kang/make-custom-app-skill/skill"><img src="https://agentmods.dev/badge/skills/minsu-kang/make-custom-app-skill/skill.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00100 | $0.02547 |
| Opus 5.5 | $0.00040 | $0.01019 |
| Sonnet 5.5 | $0.00020 | $0.00509 |
| Haiku 4.5 | $0.00010 | $0.00255 |
Grade A, and why
make-custom-app 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 3d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
60 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.
- references/app-compilation-and-deployment-reference.md 23 KB
- references/app-ux-best-practices.md 17 KB
- references/app-ux-best-practices/connections.md 3.1 KB
- references/app-ux-best-practices/fields-and-messages.md 10 KB
- references/app-ux-best-practices/modules-and-actions.md 5.0 KB
- references/builtin-iml-functions.md 19 KB
- references/code-review-criteria.md 14 KB
- references/code-review-criteria/api-imljson.md 19 KB
- references/code-review-criteria/functions.md 7.2 KB
- references/code-review-criteria/ux.md 4.1 KB
- references/code-smells-reference.md 9.2 KB
- references/communication-reference.md 7.6 KB
- references/component-patterns-reference.md 19 KB
- references/component-patterns-reference/agency-module-pattern.md 8.4 KB
- references/component-patterns-reference/connection-aliased.md 2.7 KB
- references/component-patterns-reference/connection-oauth.md 12 KB
- references/component-patterns-reference/install-params.md 6.2 KB
- references/component-patterns-reference/webhook-pattern.md 5.8 KB
- references/component-scaffold-templates.md 27 KB
- references/component-test-guide.md 22 KB
- references/custom-functions-reference.md 3.6 KB
- references/developer-notes-templates.md 2.2 KB
- references/endpoints-reference.md 25 KB
- references/endpoints-reference/api-imljson-shape.md 8.7 KB
- references/endpoints-reference/arbitrary-call.md 17 KB
- references/endpoints-reference/code-review-guidance.md 10 KB
- references/endpoints-reference/forman-schemas.md 17 KB
- references/endpoints-reference/pure-api-wrapper.md 11 KB
- references/examples.md 14 KB
- references/parameters-reference.md 27 KB
- references/polling-trigger-guide.md 9.1 KB
- references/runtime-reference.md 27 KB
- references/runtime-reference/environment-variables.md 10 KB
- references/runtime-reference/inline-endpoint-calls.md 6.9 KB
- references/runtime-reference/isc.md 13 KB
- references/runtime-reference/oauth-connection-variables.md 6.6 KB
- references/runtime-reference/pagination.md 5.9 KB
- references/security-reference.md 11 KB
- scripts/check-setup.js 9.0 KB runs code
- scripts/commit-changes.js 11 KB runs code
- scripts/create-component.js 11 KB runs code
- scripts/delete-component.js 8.4 KB runs code
- scripts/download-app.js 16 KB runs code
- scripts/download-jira-ticket-attachment.js 4.8 KB runs code
- scripts/lib/__tests__/access-guard-logic.test.js 8.1 KB runs code
- scripts/lib/__tests__/access-guard.test.js 16 KB runs code
- scripts/lib/__tests__/endpoint-annotations.test.js 2.0 KB runs code
- scripts/lib/__tests__/jira-myself.test.js 1.7 KB runs code
- scripts/lib/__tests__/run-component-logic.test.js 63 KB runs code
- scripts/lib/__tests__/run-component.test.js 42 KB runs code
- scripts/lib/__tests__/secrets-file.test.js 6.8 KB runs code
- scripts/lib/__tests__/settings.test.js 5.2 KB runs code
- scripts/lib/__tests__/skill-root.test.js 1.6 KB runs code
- scripts/lib/access-guard-logic.js 4.5 KB runs code
- scripts/lib/access-guard.js 4.5 KB runs code
- scripts/lib/endpoint-annotations.js 1.1 KB runs code
- scripts/lib/jira-myself.js 704 B runs code
- scripts/lib/run-component-logic.js 39 KB runs code
- scripts/lib/secrets-file.js 2.8 KB runs code
- scripts/lib/settings.js 5.8 KB runs code
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.
- 3d ago Changed 48ae7bc4842a
- 4d ago Changed f6fc653aad8f
- 7d ago Changed f014337205eb
- 8d ago Changed · +1 lines db4a1ecf3205
- 9d ago Changed 3cdbb664c6fd
- 11d ago Changed · -2 lines 768c7dfc8055
- 16d ago Changed · +34 tokens per session 9936aa83d28c
- 22d ago Changed d5f5c9326fac
- 23d ago Changed 845a2976a1e9
- 29d ago First seen · 97 lines · 66 tokens per session scan A 20b7813f28f5
make-custom-app is a skill published in the GitHub repository minsu-kang/make-custom-app-skill (5 stars, last pushed 3d ago), with no licence file. It adds 100 tokens to every session and 2,547 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-31.
Other skills, from other repositories
mem0-oss-to-platform
Plan, then execute, a migration of a project from the mem0 open-source / self-hosted SDK (local Memory class) to the mem0 Platform / hosted SDK (MemoryClient). TRIGGER when: the developer wants to move, switch, or migrate mem0 off OSS/self-hosted to the hosted API, e.g. "migrate my mem0 setup to the platform", "switch…
azure-mgmt-botservice-dotnet
Azure Resource Manager SDK for Bot Service in .NET. Management plane operations for creating and managing Azure Bot resources, channels (Teams, DirectLine, Slack), and connection settings. Triggers: "Bot Service", "BotResource", "Azure Bot", "DirectLine channel", "Teams channel", "bot management .NET", "create bot".
fastapi-router-py
Create FastAPI routers with CRUD operations, authentication dependencies, and proper response models. Use when building REST API endpoints, creating new routes, implementing CRUD operations, or adding authenticated endpoints in FastAPI applications.
api-design
Use when settling the contract of an API you expose, before implementation: resources/URLs, REST vs GraphQL, versioning, one RFC 9457 error envelope, pagination, idempotency — emitted as OpenAPI 3.1. NOT implementing the endpoints (that is fastapi/nestjs/go/nodejs), NOT auth hardening (that is secure-coding), NOT…
migrate-segw-to-rap
Reverse-engineer a SEGW-built OData V2 service (MPC/DPC/MPCEXT/DPCEXT) into a modern RAP V4 service — tables, CDS views (interface + projection), behavior definitions, draft entities, service definition + binding. Use when asked to "migrate this SEGW service to RAP", "convert OData V2 to V4 RAP", "modernize this…
telnyx-messaging-hosted-curl
Set up hosted SMS numbers, toll-free verification, and RCS messaging. Use when migrating numbers or enabling rich messaging features. This skill provides REST API (curl) examples.