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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.

Install with Tessl CLI

npx tessl i github:Lingjie-chen/MT5 --skill pdf
What are skills?

82

Does it follow best practices?

Validation for skill structure

SKILL.md
Review
Evals

Discovery

85%

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 PDF manipulation capabilities and includes explicit 'when' guidance. The main weakness is trigger term coverage - while functional, it could include more natural user variations like '.pdf' files or 'combine PDFs'. The description uses proper third-person voice throughout.

Suggestions

Add more natural trigger term variations users might say, such as '.pdf', 'PDFs', 'combine PDFs', 'split PDF', or 'PDF extraction'

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'extracting text and tables', 'creating new PDFs', 'merging/splitting documents', and 'handling forms'. These are clear, actionable capabilities.

3 / 3

Completeness

Clearly answers both what ('extracting text and tables, creating new PDFs, merging/splitting documents, handling forms') and when ('When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents'). Has explicit trigger guidance.

3 / 3

Trigger Term Quality

Includes 'PDF' multiple times and mentions 'form', 'text', 'tables', but misses common variations users might say like '.pdf', 'PDFs', 'document extraction', or 'combine PDFs'. The term 'programmatically' is more technical than natural user language.

2 / 3

Distinctiveness Conflict Risk

Clearly focused on PDF-specific operations with distinct triggers. The combination of 'PDF form', 'merging/splitting', and 'PDF documents' creates a clear niche unlikely to conflict with general document or text processing skills.

3 / 3

Total

11

/

12

Passed

Implementation

72%

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 PDF processing guide with excellent code examples covering a wide range of operations. The main weaknesses are some verbosity that could be trimmed and missing validation/error-handling steps in multi-step workflows. The progressive disclosure and organization are well done with clear navigation to related files.

Suggestions

Add validation steps after critical operations (e.g., verify merged PDF page count, check output file exists and is readable)

Include basic error handling patterns for common failures like FileNotFoundError, encrypted PDFs, or corrupted files

Trim the Overview section - Claude doesn't need to be told what the guide covers when the structure is self-evident

DimensionReasoningScore

Conciseness

The content is mostly efficient with executable code examples, but includes some unnecessary verbosity like the 'Overview' section explaining what the guide covers, and some examples could be more compact. The quick reference table is helpful but duplicates information already shown.

2 / 3

Actionability

Excellent actionability with fully executable, copy-paste ready code examples for every operation. Both Python code and command-line tools are provided with specific, working commands and complete import statements.

3 / 3

Workflow Clarity

Individual operations are clear, but multi-step workflows lack validation checkpoints. For example, the merge/split operations don't include verification steps to confirm success, and there's no error handling guidance for common failure modes like corrupted PDFs or permission issues.

2 / 3

Progressive Disclosure

Well-structured with clear sections and appropriate references to external files (reference.md, forms.md). The quick start section provides immediate value, and advanced topics are properly signaled with one-level-deep references.

3 / 3

Total

10

/

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.

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

10

/

11

Passed

Reviewed

Table of Contents

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