vendor-prompting

vendor-prompting is a Prompt design & optimisation skill for AI agents, published by jonathan-vella in the apex repository on GitHub. Skillspace rates vendor-prompting C (77/100) and it passed the safety scan; the rating is based on static analysis only.

**ANALYSIS SKILL** — Audit-grade reference for Anthropic Claude and OpenAI GPT-5.5 prompting best practices. WHEN: "claude prompting", "gpt-5.5 prompting", "audit agent", "review prompt", "vendor best practices", "anthropic best practices", "openai prompting". DO NOT USE FOR: routine prompt edits where rules are already known, generic markdown style (markdown.instructions.md).

Grade
C
Quality
77 / 100
Safety
Passed
GitHub stars
215

Unproven: rated by static analysis only, not yet compared head-to-head.

This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.

Our review

Architecture
94 / 100
Maturity
Packaged: licensed, with a version or references
Security scan
No issues found
License
MIT
Adoption
Adopted by 2 other repositories, in 0 collections
Scope
Vendor-specific: built around one product. Documents public Anthropic and OpenAI prompting best practices

Not checked yet

  • Not judged on the rubric yet (not a contender in its category)
  • No blind task eval yet
  • Sibling files (scripts, references) not fetched; security scan covers SKILL.md only

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