--- schema: 1 type: video title: How I Built an AI Software Factory With Fable 5 description: >- Kieran Klaassen built an AI software factory for Cora, Every’s AI email app. Teammates submit feedback in Slack, a scheduled Claude Cowork routine analyzes it and creates a structured pull request, then Kieran uses Fable 5 and Compound Engineering’s LFG workflow to implement the fixes in a batch. In this walkthrough, Kieran shows how he processed 17 pieces of feedback in a single pull request, reviewed the changes through video walkthroughs, and let the system merge working improvements while he slept. Every is the most AI-native startup on the internet. Through ideas, software and education, subscribers get the tools to work at the frontier of AI. Start your free trial today: https://every.to/subscribe?utm_source=youtube In this video: 00:00 Why Fable 5 feels like a major shift 00:21 Inside Cora V2 01:11 Turning Slack into a feedback inbox 01:50 The scheduled Claude Cowork workflow 02:36 Capturing better feedback with RiffRec 03:24 Automatically turning feedback into a PR 04:02 Fixing everything with the LFG workflow 05:28 Reviewing the completed work 06:07 Why batching beats reviewing 17 PRs 06:40 Teaching the system from its mistakes 07:03 Shipping features while sleeping Learn Compound Engineering: https://every.to/guides/compound-engineering Get the open-source plugin: https://github.com/EveryInc/compound-engineering-plugin Try RiffRec: https://github.com/kieranklaassen/riffrec Read our full Fable 5 review: https://every.to/vibe-check/anthropic-mythos-our-fable-vibe-check Claude Fable 5 Prompt Library: https://every.to/p/claude-fable-5-prompt-library canonical: >- https://liquidgold.cc/channel/everyinc/explore/video/how-i-built-an-ai-software-factory-with-fable-5-47e5a36e1acc markdown: >- https://liquidgold.cc/channel/everyinc/video/how-i-built-an-ai-software-factory-with-fable-5-47e5a36e1acc.md llms: null parent: 'https://liquidgold.cc/channel/everyinc.md' channel: everyinc updated: '2026-10-23T22:20:54.267Z' language: null children: [] videoId: rYX6m4gIys0 durationSeconds: 466 publishedAt: '2026-06-11T05:38:24.000Z' searchChunks: - ordinal: 0 text: null startSeconds: 38 endSeconds: 72 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=38' heldReason: rights - ordinal: 1 text: null startSeconds: 72 endSeconds: 83 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=72' heldReason: rights - ordinal: 2 text: null startSeconds: 83 endSeconds: 117 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=83' heldReason: rights - ordinal: 3 text: null startSeconds: 117 endSeconds: 128 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=117' heldReason: rights - ordinal: 4 text: null startSeconds: 128 endSeconds: 162 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=128' heldReason: rights - ordinal: 5 text: null startSeconds: 128 endSeconds: 162 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=128' heldReason: rights - ordinal: 6 text: null startSeconds: 162 endSeconds: 174 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=162' heldReason: rights - ordinal: 7 text: null startSeconds: 174 endSeconds: 209 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=174' heldReason: rights - ordinal: 8 text: null startSeconds: 209 endSeconds: 222 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=209' heldReason: rights - ordinal: 9 text: null startSeconds: 222 endSeconds: 245 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=222' heldReason: rights - ordinal: 10 text: null startSeconds: 257 endSeconds: 334 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=257' heldReason: rights - ordinal: 11 text: null startSeconds: 257 endSeconds: 334 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=257' heldReason: rights - ordinal: 12 text: null startSeconds: 257 endSeconds: 334 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=257' heldReason: rights - ordinal: 13 text: null startSeconds: 334 endSeconds: 345 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=334' heldReason: rights - ordinal: 14 text: null startSeconds: 367 endSeconds: 379 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=367' heldReason: rights - ordinal: 15 text: null startSeconds: 379 endSeconds: 400 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=379' heldReason: rights - ordinal: 16 text: null startSeconds: 400 endSeconds: 411 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=400' heldReason: rights - ordinal: 17 text: null startSeconds: 411 endSeconds: 434 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=411' heldReason: rights - ordinal: 18 text: null startSeconds: 434 endSeconds: 444 watch: 'https://liquidgold.cc/watch/rYX6m4gIys0?t=434' heldReason: rights --- # How I Built an AI Software Factory With Fable 5 Kieran Klaassen built an AI software factory for Cora, Every’s AI email app. Teammates submit feedback in Slack, a scheduled Claude Cowork routine analyzes it and creates a structured pull request, then Kieran uses Fable 5 and Compound Engineering’s LFG workflow to implement the fixes in a batch. In this walkthrough, Kieran shows how he processed 17 pieces of feedback in a single pull request, reviewed the changes through video walkthroughs, and let the system merge working improvements while he slept. Every is the most AI-native startup on the internet. Through ideas, software and education, subscribers get the tools to work at the frontier of AI. Start your free trial today: https://every.to/subscribe?utm_source=youtube In this video: 00:00 Why Fable 5 feels like a major shift 00:21 Inside Cora V2 01:11 Turning Slack into a feedback inbox 01:50 The scheduled Claude Cowork workflow 02:36 Capturing better feedback with RiffRec 03:24 Automatically turning feedback into a PR 04:02 Fixing everything with the LFG workflow 05:28 Reviewing the completed work 06:07 Why batching beats reviewing 17 PRs 06:40 Teaching the system from its mistakes 07:03 Shipping features while sleeping Learn Compound Engineering: https://every.to/guides/compound-engineering Get the open-source plugin: https://github.com/EveryInc/compound-engineering-plugin Try RiffRec: https://github.com/kieranklaassen/riffrec Read our full Fable 5 review: https://every.to/vibe-check/anthropic-mythos-our-fable-vibe-check Claude Fable 5 Prompt Library: https://every.to/p/claude-fable-5-prompt-library Canonical: https://liquidgold.cc/channel/everyinc/explore/video/how-i-built-an-ai-software-factory-with-fable-5-47e5a36e1acc · Channel: [Every](https://liquidgold.cc/channel/everyinc.md) > Search chunk text is held until public-source provenance is verified. ## Document chunks --- #### Chunk 0: Document excerpt (0:01 to 1:12) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 1: Document excerpt (1:12 to 2:08) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 2: Document excerpt (2:08 to 3:29) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 3: Document excerpt (3:29 to 4:17) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 4: Document excerpt (4:17 to 5:34) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 5: Document excerpt (5:34 to 6:19) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 6: Document excerpt (6:19 to 6:51) > Held: transcript rights do not permit this chunk's text. --- #### Chunk 7: Document excerpt (6:51 to 7:46) > Held: transcript rights do not permit this chunk's text.