Agent skill

wavecap-transcripts

Check and analyze WaveCap transcriptions. Use when the user wants to inspect transcript quality, find problematic transcriptions, compare original vs corrected text, or audit transcription accuracy.

View SKILL.md on GitHub Repository
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npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/wavecap-transcripts-tobiaswooldridge-wavecap

SKILL.md

WaveCap Transcripts Analysis Skill

Use this skill to inspect, analyze, and audit transcription quality in WaveCap.

Get Transcriptions

List recent transcriptions for a stream

bash
curl -s "http://localhost:8000/api/streams/{STREAM_ID}/transcriptions?limit=20" | \
  jq '.transcriptions[] | {id, timestamp, text, confidence, reviewStatus}'

Get all transcriptions across streams

bash
curl -s http://localhost:8000/api/transcriptions/export | jq 'length'

Get transcription with full details

bash
curl -s "http://localhost:8000/api/streams/{STREAM_ID}/transcriptions?limit=100" | \
  jq '.transcriptions[] | select(.id == "TRANSCRIPTION_ID")'

Quality Analysis

Find low-confidence transcriptions

bash
# Very low confidence (< 0.5) - likely errors
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.confidence != null and .confidence < 0.5)] | sort_by(.confidence) | .[:20] | .[] | {id, streamId, confidence, text}'

# Medium-low confidence (0.5 - 0.7) - may need review
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.confidence != null and .confidence >= 0.5 and .confidence < 0.7)] | length'

Find very short transcriptions (might be noise)

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select((.text | length) < 10)] | .[:20] | .[] | {id, text, duration, confidence}'

Find transcriptions with common error patterns

bash
# Find transcriptions with repeated words (stuttering artifact)
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.text | test("\\b(\\w+)\\s+\\1\\b"))] | .[:10] | .[] | {id, text}'

# Find transcriptions with "[inaudible]" or similar markers
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.text | test("inaudible|unclear|unintelligible"; "i"))] | length'

Analyze confidence distribution

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq 'group_by(.confidence | . * 10 | floor / 10) | map({confidence_bucket: .[0].confidence | . * 10 | floor / 10, count: length}) | sort_by(.confidence_bucket)'

Compare Original vs Corrected

List corrected transcriptions

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.reviewStatus == "corrected")] | .[] | {id, original: .text, corrected: .correctedText, reviewer: .reviewedBy}'

Show diff between original and corrected

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.reviewStatus == "corrected")] | .[:5] | .[] | "--- Original ---\n" + .text + "\n--- Corrected ---\n" + .correctedText + "\n"'

Calculate correction rate

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '{
    total: length,
    corrected: [.[] | select(.reviewStatus == "corrected")] | length,
    verified: [.[] | select(.reviewStatus == "verified")] | length,
    pending: [.[] | select(.reviewStatus == "pending" or .reviewStatus == null)] | length
  } | . + {correction_rate: (.corrected / .total * 100 | . * 100 | round / 100)}'

Review Status Audit

Count by review status

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq 'group_by(.reviewStatus // "pending") | map({status: .[0].reviewStatus // "pending", count: length})'

List transcriptions needing review (low confidence, unreviewed)

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select((.reviewStatus == "pending" or .reviewStatus == null) and .confidence != null and .confidence < 0.7)] | sort_by(.confidence) | .[:20] | .[] | {id, streamId, confidence, text}'

Find recently reviewed transcriptions

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.reviewedAt != null)] | sort_by(.reviewedAt) | reverse | .[:10] | .[] | {id, reviewStatus, reviewedAt, reviewedBy}'

Stream-by-Stream Analysis

Transcription count per stream

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq 'group_by(.streamId) | map({stream: .[0].streamId, count: length}) | sort_by(.count) | reverse'

Average confidence per stream

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq 'group_by(.streamId) | map({
    stream: .[0].streamId,
    count: length,
    avg_confidence: ([.[] | .confidence // 0] | add / length | . * 100 | round / 100)
  }) | sort_by(.avg_confidence)'

Find streams with quality issues

bash
# Streams with many low-confidence transcriptions
curl -s http://localhost:8000/api/transcriptions/export | \
  jq 'group_by(.streamId) | map({
    stream: .[0].streamId,
    total: length,
    low_confidence: [.[] | select(.confidence != null and .confidence < 0.6)] | length
  }) | map(. + {pct_low: (.low_confidence / .total * 100 | round)}) | sort_by(.pct_low) | reverse | .[:10]'

Segment Analysis

Inspect transcription segments (word-level timing)

bash
curl -s "http://localhost:8000/api/streams/{STREAM_ID}/transcriptions?limit=5" | \
  jq '.transcriptions[0].segments'

Find segments with low confidence (within a transcription)

bash
curl -s "http://localhost:8000/api/streams/{STREAM_ID}/transcriptions?limit=10" | \
  jq '.transcriptions[] | {id, low_conf_segments: [.segments[]? | select(.no_speech_prob > 0.5 or .avg_logprob < -1)] | length}'

Time-Based Analysis

Transcriptions in the last hour

bash
SINCE=$(date -u -v-1H +"%Y-%m-%dT%H:%M:%SZ" 2>/dev/null || date -u -d "1 hour ago" +"%Y-%m-%dT%H:%M:%SZ")
curl -s http://localhost:8000/api/transcriptions/export | \
  jq --arg since "$SINCE" '[.[] | select(.timestamp >= $since)] | length'

Activity over time

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq 'group_by(.timestamp | split("T")[0]) | map({date: .[0].timestamp | split("T")[0], count: length}) | sort_by(.date) | .[-14:]'

Text Search

Search transcriptions for keywords

bash
curl -s "http://localhost:8000/api/transcriptions/search?q=fire&limit=20" | \
  jq '.results[] | {id, streamId, timestamp, text, matchCount}'

Find transcriptions mentioning addresses

bash
curl -s http://localhost:8000/api/transcriptions/export | \
  jq '[.[] | select(.text | test("\\d+\\s+\\w+\\s+(street|st|avenue|ave|road|rd|drive|dr|lane|ln)"; "i"))] | .[:10] | .[] | {id, text}'

Tips

  • Use .confidence to prioritize which transcriptions need review
  • The reviewStatus field can be: pending, corrected, or verified
  • correctedText contains human-corrected version when reviewStatus == "corrected"
  • Segments provide word-level timing and confidence via no_speech_prob and avg_logprob
  • Very short transcriptions with low confidence are often noise, not real speech
  • Use the search API for keyword queries rather than filtering exports client-side

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