push-to-registry
Push Packer build metadata to HCP Packer registry for tracking and managing image lifecycle. Use when integrating Packer builds with HCP Packer for version control and governance.
80
70%
Does it follow best practices?
Impact
96%
1.15xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./packer/hcp/skills/push-to-registry/SKILL.mdQuality
Discovery
75%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description is well-structured with a clear 'Use when' clause and targets a distinct niche (HCP Packer registry). Its main weakness is that the specific capabilities could be more granular — listing concrete actions beyond 'push build metadata' would improve specificity. Trigger terms are adequate but could include more user-facing variations.
Suggestions
Add more specific concrete actions such as 'register iterations, track build artifacts, assign channels, manage image ancestry' to improve specificity.
Include additional natural trigger terms users might use, such as 'HCP Packer channel', 'iteration', 'artifact', or 'image registry' to broaden keyword coverage.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | It names the domain (HCP Packer registry) and a general action ('push build metadata'), but doesn't list multiple concrete actions. It mentions 'tracking and managing image lifecycle' which is somewhat vague rather than listing specific capabilities like 'register iterations, track build artifacts, assign channels'. | 2 / 3 |
Completeness | Clearly answers both 'what' (push Packer build metadata to HCP Packer registry for tracking and managing image lifecycle) and 'when' (Use when integrating Packer builds with HCP Packer for version control and governance), with an explicit 'Use when' clause. | 3 / 3 |
Trigger Term Quality | Includes relevant terms like 'Packer', 'HCP Packer', 'build metadata', 'registry', 'image lifecycle', and 'version control'. However, it misses common variations users might say such as 'HCP Packer channel', 'iteration', 'artifact tracking', 'packer build push', or 'image management'. | 2 / 3 |
Distinctiveness Conflict Risk | Very specific niche — HCP Packer registry integration is a distinct domain unlikely to conflict with other skills. The combination of 'HCP Packer', 'registry', and 'build metadata' creates clear, unique triggers. | 3 / 3 |
Total | 10 / 12 Passed |
Implementation
64%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a solid, actionable skill with excellent executable code examples covering the full HCP Packer registry workflow. Its main weaknesses are the lack of explicit validation checkpoints in the workflow (e.g., verifying metadata was pushed successfully) and some verbosity in explanatory sections that could be trimmed. The content would benefit from being split into a concise overview with references to separate files for CI/CD and Terraform integration.
Suggestions
Add an explicit validation step after `packer build` to verify metadata was pushed (e.g., using HCP CLI or API to confirm the iteration exists in the registry).
Move CI/CD integration and Terraform querying sections into separate referenced files to keep the main SKILL.md focused on core registry configuration.
Remove explanatory text that restates what the code already shows (e.g., the bucket_name/bucket_labels/build_labels descriptions) and trim the service principal creation steps to just the essential command or link.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is mostly efficient with good code examples, but includes some unnecessary explanations (e.g., the note about HCP Packer being free, step-by-step UI instructions for creating a service principal that Claude doesn't need). The configuration options section explains obvious things like 'bucket_name (required) - The image identifier' which is self-evident from the code. | 2 / 3 |
Actionability | Provides fully executable HCL templates, bash commands, GitHub Actions YAML, and Terraform data source examples. All code blocks are copy-paste ready with realistic values and complete configurations covering the full workflow from authentication to querying artifacts. | 3 / 3 |
Workflow Clarity | The implicit workflow (authenticate → configure → build → query) is discernible but not explicitly sequenced with numbered steps or validation checkpoints. There's no explicit verification step to confirm metadata was successfully pushed to the registry, and the troubleshooting section is reactive rather than integrated into the workflow as validation gates. | 2 / 3 |
Progressive Disclosure | The content is well-structured with clear section headers and progresses from basic to advanced (CI/CD, Terraform querying). However, at ~150 lines it's somewhat long for a single file with no bundle files to offload detail into. The CI/CD integration and Terraform querying sections could be separate referenced files to keep the main skill focused. | 2 / 3 |
Total | 9 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- hashicorp/agent-skills
- Commit
339a113
- Reviewed
Table of Contents
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