Install
$ agentstack add skill-treylom-thiscodex-prompt ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
prompt — structured prompt generation
Vendored, unmodified-in-substance copy of the public prompt-engineering-skills package (MIT). It turns a rough intent into a structured, framework-grounded prompt rather than an ad-hoc one, and routes by task type.
When to use (mandatory-invocation)
Invoke this skill — do not free-hand a prompt — whenever the work is:
- "write / make / improve / review a prompt" for any model
- building GPTs or Gems system instructions
- fact-check / research prompting (IFCN-grounded base templates required)
- image-generation prompting (5-stage framework)
- any request whose deliverable is itself a prompt
A bot whose config mandates /prompt (see the repo's docs/SETUP-CONFIG-GUIDE.md §"force-invoke") MUST route here first.
How it routes (progressive disclosure)
This SKILL.md is the router. Load the heavy reference only for the matched task — do not read all of it up front:
See references/ for detailed procedures only when the matched prompt task asks for them.
| Task | Load | |---|---| | Generate / refine a prompt (main workflow) | [references/prompt-generator.md](references/prompt-generator.md) | | Framework / technique deep reference | [references/prompt-engineering-guide.md](references/prompt-engineering-guide.md) | | Worked examples (Claude / GPT / image) | [references/examples/](references/examples/) | | Build a GPTs instruction | [references/instructions/GPTs-Prompt-Generator.md](references/instructions/GPTs-Prompt-Generator.md) | | Build a Gems instruction | [references/instructions/Gems-Prompt-Generator.md](references/instructions/Gems-Prompt-Generator.md) | | Build bot meta files (soul.md / CLAUDE.md / AGENTS.md) | [references/instructions/Bot-Persona-Generator.md](references/instructions/Bot-Persona-Generator.md) |
Procedure:
- Classify the request (generate / fact-check / research / image / GPTs / Gems).
- Read only the matched reference above.
- For fact-check / research, the engineering guide's IFCN base template is
mandatory — do not emit a generic XML prompt.
- Produce the structured prompt; show the user the final prompt explicitly.
Subcommands
This is a single-invocation skill — call /prompt with your task description (generate, review, refine, GPT/Gem instructions, image, fact-check, research). The skill routes internally to the matched reference (generator, engineering guide, examples, GPT/Gem instructions). Subcommands are:
| When to use | Call | |---|---| | Generate or refine a prompt | /prompt — turns rough intent into a structured, framework-grounded prompt. | | Review a prompt for robustness | /prompt review: — checks completeness, phrasing, and edge cases. | | Build GPT system instructions | /prompt gpt: — generates structured GPT instructions using the GPT-Prompt-Generator framework. | | Build Gem system instructions | /prompt gem: — generates structured Gem instructions using the Gems-Prompt-Generator framework. | | Build bot persona/meta files | /prompt bot-persona: — generates soul.md + CLAUDE.md/AGENTS.md using the Bot-Persona-Generator framework (used by guided onboarding). | | Image generation prompting | /prompt image: — applies the 5-stage image-generation framework (subject, style, composition, quality, mood). | | Fact-check or research prompting | /prompt research: — wraps the IFCN base template for verifiable claims and source-grounded research. | | Study the framework | Load references/prompt-engineering-guide.md — deep techniques, mental models, and worked examples. |
Attribution
- Upstream:
github.com/treylom/prompt-engineering-skills(public, MIT) —
see [LICENSE](LICENSE). Context-Engineering basis: Muratcan Koylan, Agent-Skills-for-Context-Engineering.
- Vendored here so the bot ships self-contained. The upstream maintainer's
personal deploy script (commands/prompt-sync.md) is intentionally excluded (machine-specific, not relevant to distributees).
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: treylom
- Source: treylom/ThisCodex
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.