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summarize

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

Install with Tessl CLI

npx tessl i github:HKUDS/nanobot --skill summarize
What are skills?

83

2.63x

Quality

82%

Does it follow best practices?

Impact

87%

2.63x

Average score across 3 eval scenarios

SKILL.md
Review
Evals

Evaluation results

79%

44%

Podcast Episode Transcript Helper

YouTube transcript extraction

Criteria
Without context
With context

Uses summarize CLI

100%

100%

youtube auto flag

0%

100%

extract-only flag

0%

100%

Default model used

0%

100%

GEMINI_API_KEY referenced

100%

100%

Large transcript summary first

0%

0%

Prompt for section/time range

0%

40%

Transcript written to file

100%

100%

Without context: $0.3889 · 1m 57s · 23 turns · 24 in / 6,226 out tokens

With context: $0.2512 · 1m 1s · 15 turns · 177 in / 3,357 out tokens

100%

68%

Daily Research Digest Automation

URL batch summarization pipeline

Criteria
Without context
With context

Uses summarize CLI

0%

100%

JSON flag used

0%

100%

Length flag used

0%

100%

Max output tokens flag

30%

100%

OPENAI_API_KEY referenced

100%

100%

Config file location correct

0%

100%

Config file format correct

0%

100%

Output collected into digest.json

100%

100%

Iterates over urls.txt

100%

100%

Without context: $0.7590 · 3m 12s · 40 turns · 44 in / 10,937 out tokens

With context: $0.5793 · 2m 6s · 33 turns · 193 in / 6,960 out tokens

84%

52%

Competitive Intelligence Monitor

Firecrawl fallback for blocked sites

Criteria
Without context
With context

Uses summarize CLI

0%

100%

Firecrawl always flag

0%

100%

FIRECRAWL_API_KEY referenced

100%

100%

ANTHROPIC_API_KEY referenced

100%

100%

Anthropic model used

0%

100%

Correct brew install formula

0%

100%

Default model documented

0%

0%

Output written to file

100%

100%

APIFY_API_TOKEN mentioned

0%

0%

Without context: $0.3761 · 1m 54s · 21 turns · 27 in / 5,326 out tokens

With context: $0.3137 · 1m 1s · 21 turns · 300 in / 3,310 out tokens

Evaluated
Agent
Claude Code
Model
Claude Sonnet 4.6

Table of Contents

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