CoSine · Software that holds
Ship code your LLM can't ship alone.
We encode the way you build into the harness around the model. What gets generated stays reliable, maintainable, on-pattern.
§01 · The problem
Vibe-coded systems break in production.
Patterns drift between every prompt, every engineer.
The knowledge that would have prevented either lives in someone's head.
§02 · The system
One stack. Composes up.
The technical layers. Same primitives at every tier — more of them as the work scales. The discovery that decides what to build sits earlier, in the engagement, not the stack.
- 01
Memory
Atoms of decision, correction, precedent. Append-only. Searchable.
- 02
Precedents
Rejected paths and confirmed patterns retrieved by relevance.
- 03
Harness
The runtime around the model. Hooks, gates, recovery.
- 04
Knowledge Store
Company-wide. Patterns, procedures, lore — queryable by humans and LLMs alike.
§03 · For…
§01 · For individuals
Build the thing you've been trying to vibe-code.
Portfolios, automation, research. We define what you actually want, then equip your harness with the precedents to steer the model into delivering it.
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§02 · For solo business owners
Run your business on software you trust.
A capable harness, deployable code, maintenance you understand. The system that runs your business shouldn’t be the thing that owns you.
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§03 · For engineering teams
Make your engineers ship AI-assisted code that holds.
FDE training for your team, a scalable knowledge store, and the approved-pattern library that lets the model generate deterministically.
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§04 · For enterprise architecture
Unlock your codebase and data for your AI tools.
Data lakes, silos, governance. We configure the integrations so your knowledge store reaches everything your teams need to leverage it.
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§04 · Proof
Selected work
All →
In build · 2026-04 → ongoing
Social Sine
Shipping a real product solo with AI augmentation — and the discipline that takes.
In build · 2025-11 → 2026-04
A memory layer for AI agents
Production-grade memory for AI coding tools — built for myself, now powering the knowledge store at a tech-driven bank.
Live · 2026-02 → ongoing
Ableton Mentor
AI augmentation in a non-traditional place — an MCP server that listens to my music sessions and tells me why track 7 sounds dark and mono.
§05 · Start
What are you building?
A sentence is enough. We'll route you from there.