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Imagine you’re scanning 50 episodes of a health podcast looking for the best supplements. You don’t know the product names yet. That’s the whole point. You can’t search for “Shilajit” or “Tongkat Ali” because you’ve never heard of them. What you can describe is what you’re looking for: “supplement that actually improved energy,” “what I take every morning,” “the one thing I’d recommend for men over 30.” Keyword search is useless here. You’d have to already know the answers to search for them. deep_search flips this: you describe the idea, and Augent finds the exact moments where products, recommendations, and protocols are discussed, even when you have no idea what they’re called. The names, the dosages, the timestamps, all surfaced from a natural language prompt.

Searching by meaning

deep_search doesn’t match words. It matches meaning. Under the hood, it converts every segment of the transcript into a numerical fingerprint that captures its meaning. Your query gets the same treatment. Augent finds the segments whose meaning is closest to yours and ranks them by relevance. Describe what you’re looking for in plain language and Augent finds the moments where that idea was discussed, regardless of the exact words. Query: “supplements that improve energy and testosterone” Finds:
  • “The data on Shilajit is really compelling for men over 30” — ep-33, 34:22
  • “Most people would benefit from Tongkat Ali” — ep-11, 1:12:05
  • “If you’re feeling burned out, this is the first thing I’d add to your stack” — ep-07, 48:15
None of these results necessarily contain the words “energy” or “testosterone.” All of them are exactly what you were looking for.

Real example: supplement research across 50 episodes

Take 50 episodes of a health podcast and run deep_search with queries like “supplement that actually works,” “what I take every morning,” and “the one thing I’d recommend.” What you get back would take weeks to compile by hand:
SupplementBenefitWho It’s ForDailyEpisodeTimestamp
ShilajitTestosterone, energyMen 30+Yesep-3334:22
Tongkat AliHormone optimizationMen, athletesYesep-111:12:05
AshwagandhaStress, cortisol regulationHigh-stress individualsCyclingep-2928:41
ApigeninSleep onsetAnyone with sleep issuesYesep-4252:07
Oregano OilGut health, antimicrobialImmune supportYesep-1518:33
TurmericAnti-inflammatory, jointsGeneral health, athletesYesep-2241:09
With matched quotes and timestamps:
“The data on Shilajit is really compelling for men over 30” — ep-33, 34:22
“Most people would benefit from Tongkat Ali” — ep-11, 1:12:05
“The literature strongly supports Ashwagandha for stress” — ep-29, 28:41
“If you have trouble falling asleep, Apigenin is the one to look at” — ep-42, 52:07
Fifty hours of audio. Every recommendation pulled out, sourced, and timestamped. Minutes, not weeks.

Same pattern, any domain

The supplement example is one use case. Same approach works anywhere you have hours of content and don’t know exactly what to search for:
DomainWhat you’d queryWhat gets surfaced
Product research”tool they swear by,” “product that saved them time”Specific software, hardware, and services you’ve never heard of, with firsthand endorsements and context
Competitive intel”feature their customers love,” “what they do differently”Positioning, strategy, and advantages mentioned in interviews, demos, and earnings calls
Legal & compliance”admitted fault,” “agreed to terms,” “changed their story”Critical moments in depositions, hearings, and recorded calls
Hiring & culture”why they left,” “what made them stay,” “red flag in the interview”Patterns across exit interviews, all-hands recordings, and candidate screens
Education”the key insight,” “most common mistake,” “what I wish I knew”Actionable takeaways from lectures, courses, and tutorials without watching the full thing
Content repurposing”best quote,” “most controversial take,” “funniest moment”Clip-worthy moments across an entire content library
The workflow is always the same: describe what you’re looking for, get back the exact moments with names, details, and timestamps that you couldn’t have found with keywords alone.

Finding what you didn’t know to search for

This is what deep_search is built for. Keyword search only works when you already know what you’re looking for. But the most valuable content in any recording is often something you didn’t expect: a passing recommendation, an offhand insight, a product mention you’d never heard of. You can’t write a keyword query for something you don’t know exists. With semantic search, broad queries surface specific moments:
QueryWhat it finds
”product that changed their routine”A specific brand or supplement the host credits with a measurable result
”tool they use every day”Software, hardware, or workflow the speaker can’t live without
”something most people get wrong”Contrarian insights and corrections buried in long-form conversation
”underrated strategy that actually works”Tactics and approaches that aren’t mainstream but have proven results
These aren’t keyword matches. They’re meaning matches. The speaker never said “underrated strategy.” They told a story about what worked. But the meaning aligned, and deep_search found it. Instead of listening through hours of audio, you mine across it. You’re not searching for words. You’re searching for ideas — and finding ones you didn’t know were there.

Embeddings are shared and stored

The first time deep_search runs on a file, it computes embeddings for every segment and stores them in memory. Every subsequent search on that file is instant, no matter how different the query. The expensive computation happens once. These embeddings are also shared with chapters and search_memory (semantic mode), which use the same vectors. Run deep_search on a file, and chapters or search_memory on that file is free. The embeddings are already computed.
Need to search across all stored transcriptions at once? Use search_memory — it queries every file in memory with a single call, no audio_path needed.

Both tools exist because they solve different problems:
Keyword searchDeep search
Best forProduct names, brand names, proper nouns, specific phrasesConcepts, themes, ideas, exploratory queries
Query"Ashwagandha""supplement that helps with stress"
MatchesExact word occurrencesSemantically similar segments
SpeedInstant (string matching)Instant after first run (embedding lookup)
MissesAnything said differentlyNothing meaningful. If the idea is there, it finds it
Use search_audio when you know the exact term: a product name, a brand, a person. Use deep_search when you know the idea but not the words, or when you want to discover what’s in the content without knowing in advance.

Tool Reference

Parameters, response format, and technical details