summarize

Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).

2.63x

Quality

76%

Does it follow best practices?

Impact

87%

2.63x

Average score across 3 eval scenarios

Securityby

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./nanobot/skills/summarize/SKILL.md

Quality

Discovery

64%

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 has good trigger term coverage with natural keywords like 'transcribe', 'YouTube', 'podcasts', and 'summarize' that users would commonly use. However, it lacks an explicit 'Use when...' clause which limits its completeness score, and the scope of 'local files' is broad enough to potentially conflict with other file-processing skills.

Suggestions

Add an explicit 'Use when...' clause, e.g., 'Use when the user asks to summarize a URL, transcribe a podcast or video, or extract text from a media file.'

Narrow the 'local files' scope by specifying file types (e.g., audio files, video files, HTML files) to reduce overlap with generic file-processing skills.

Dimension	Reasoning	Score
Specificity	Names the domain (URLs, podcasts, local files) and some actions (summarize, extract text/transcripts), but doesn't list comprehensive specific actions beyond summarize/extract.	2 / 3
Completeness	The 'what' is reasonably clear (summarize/extract text from URLs, podcasts, files), but there is no explicit 'Use when...' clause. The parenthetical hint about YouTube/video serves as an implicit trigger but doesn't constitute explicit trigger guidance, capping this at 2.	2 / 3
Trigger Term Quality	Includes strong natural trigger terms users would say: 'summarize', 'extract text', 'transcripts', 'URLs', 'podcasts', 'YouTube', 'video', 'transcribe'. Good coverage of common variations including the parenthetical fallback note.	3 / 3
Distinctiveness Conflict Risk	The combination of URLs, podcasts, and transcripts gives it some distinctiveness, but 'extract text from local files' and 'summarize URLs' could overlap with general file processing or web scraping skills.	2 / 3
	Total	9 / 12 Passed

Implementation

87%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This is a well-crafted, concise skill that provides immediately actionable CLI commands with clear trigger phrases and organized reference sections. Its main weakness is the lack of error-handling guidance or validation steps when things go wrong (missing keys, failed extractions, unsupported URLs). The YouTube transcript handling could benefit from a more explicit workflow.

Suggestions

Add brief error-handling guidance: what to do if the command fails (e.g., missing API key, unsupported URL, extraction timeout).

Make the large-transcript workflow more explicit with concrete steps, e.g., 'Run with --length short first, then re-run with a --time-range flag if the user wants a specific section.'

Dimension	Reasoning	Score
Conciseness	Every section is lean and purposeful. No unnecessary explanations of what URLs, PDFs, or YouTube are. The API key list is minimal and the flags section is a compact reference.	3 / 3
Actionability	Provides fully executable bash commands for all primary use cases (URLs, local files, YouTube). Flags, config file format, and environment variable names are all concrete and copy-paste ready.	3 / 3
Workflow Clarity	The skill covers a relatively simple CLI tool, but the guidance for handling large transcripts ('return a tight summary first, then ask which section/time range to expand') is somewhat vague and lacks explicit steps. There's no validation or error-handling guidance (e.g., what happens if a key is missing or extraction fails).	2 / 3
Progressive Disclosure	For a skill under 50 lines with a single CLI tool, the content is well-organized into clearly labeled sections (trigger phrases, quick start, YouTube specifics, model/keys, flags, config) with no unnecessary nesting or external references needed.	3 / 3
	Total	11 / 12 Passed

Validation

72%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 8 / 11 Passed

Validation for skill structure

Criteria	Description	Result
metadata_version	'metadata.version' is missing	Warning
metadata_field	'metadata' should map string keys to string values	Warning
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	8 / 11 Passed

Repository: HKUDS/nanobot
Commit: 04a41e3

Reviewed: about 22 hours ago

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