Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale.
81
76%
Does it follow best practices?
Impact
85%
3.69xAverage score across 3 eval scenarios
Risky
Do not use without reviewing
Optimize this skill with Tessl
npx tessl skill review --optimize ./plugins/all-skills/skills/pdf/SKILL.mdQuality
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a strong skill description that clearly articulates specific capabilities (extracting text/tables, creating, merging/splitting, form handling) and provides an explicit 'When' clause for trigger guidance. It uses third-person voice appropriately and includes natural keywords users would use when needing PDF-related help. The description is concise yet comprehensive.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'extracting text and tables', 'creating new PDFs', 'merging/splitting documents', 'handling forms', 'fill in a PDF form', 'programmatically process, generate, or analyze PDF documents'. | 3 / 3 |
Completeness | Clearly answers both 'what' (extracting text/tables, creating PDFs, merging/splitting, handling forms) and 'when' ('When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale'). The 'When' clause is explicit. | 3 / 3 |
Trigger Term Quality | Includes strong natural keywords users would say: 'PDF', 'text', 'tables', 'merging', 'splitting', 'forms', 'PDF form', 'extract', 'generate', 'analyze PDF documents'. Covers many common variations of PDF-related tasks. | 3 / 3 |
Distinctiveness Conflict Risk | Clearly scoped to PDF manipulation with distinct triggers like 'PDF form', 'merging/splitting documents', 'PDF documents'. Unlikely to conflict with other skills due to the specific PDF focus and detailed action list. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
52%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The skill provides excellent actionable, executable code examples across multiple PDF libraries and tools, making it highly practical. However, it lacks workflow validation steps for file operations (no verification that outputs are correct/valid), and the main file is too long for an overview—much of the detailed code could be offloaded to reference files. The content is moderately concise but includes some examples Claude could derive on its own.
Suggestions
Add validation/verification steps after key operations (e.g., verify merged PDF page count matches expected total, confirm output file exists and is readable, validate encrypted PDF requires password to open).
Move detailed library-specific examples (pypdf operations, reportlab creation, CLI tools) into separate reference files and keep SKILL.md as a concise overview with only the most essential quick-start examples.
Add error handling guidance for common failure modes (corrupted PDFs, password-protected inputs, missing dependencies) as part of workflow checkpoints.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is fairly comprehensive but includes some redundancy (e.g., showing merge/split/rotate operations that are straightforward for Claude). The quick reference table at the end partially duplicates what's already shown. Some sections like 'Extract Metadata' and 'Rotate Pages' are simple enough that Claude wouldn't need full examples, but overall it's not egregiously verbose. | 2 / 3 |
Actionability | All code examples are fully executable and copy-paste ready with proper imports. Both Python and command-line approaches are provided with concrete, complete examples covering a wide range of PDF operations. | 3 / 3 |
Workflow Clarity | There are no multi-step workflows with validation checkpoints. Operations like merging, watermarking, and encryption involve file manipulation but lack any verification steps (e.g., confirming output PDF is valid, checking page counts after merge, verifying encryption). For destructive/batch file operations, this absence is a significant gap. | 1 / 3 |
Progressive Disclosure | The skill references forms.md and reference.md for advanced content, which is good. However, the main file itself is quite long (~200+ lines) with extensive inline code examples that could be split into separate reference files. The structure is decent with clear headers but the body contains too much detail for an overview document. | 2 / 3 |
Total | 8 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
- Repository
- davepoon/buildwithclaude
- Commit
d065ead
- Reviewed
Table of Contents
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