---
name: bb80-deterministic-receipts
description: "Replace human review with reproducible evidence. Always provide deterministic receipts, never narratives."
allowed_tools: "Bash(cargo make:*)"
---

# Big Bang 80/20: Deterministic Receipts

## Core Concept

**Deterministic Receipts** replace human review with reproducible evidence.

Never say "code looks good". Instead provide receipts.

## The Pattern

**❌ BAD** (Narrative):
```
"I reviewed the code. It looks good. Performance should be fine."
```

**✅ GOOD** (Receipts):
```
[Receipt] cargo make check: ✓ 0 errors, 0 warnings
[Receipt] cargo make lint: ✓ 0 clippy violations
[Receipt] cargo make test: ✓ 347/347 tests passed in 28.3s
[Receipt] SLO compliance: ✓ test <30s (target met)
```

## Essential Receipts

```bash
cargo make check      # [Receipt] Compilation status
cargo make test       # [Receipt] Test pass/fail counts
cargo make lint       # [Receipt] Clippy warnings
cargo make pre-commit # [Receipt] Quality gate status
```

## Reference
See CLAUDE.md sections:
- Three Paradigms (Deterministic Receipts)
- Remember (Receipts Over Narratives)
- Development Workflow (Commit with Evidence)


---
Source attribution: seanchatmangpt
Original project: https://github.com/seanchatmangpt/ggen/blob/545b52e3a7a58c6a02885bd35feebaeb8cf81898/.claude/skills/bb80-deterministic-receipts/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2025 Sean Chatman

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: seanchatmangpt
Original project: https://github.com/seanchatmangpt/ggen/blob/545b52e3a7a58c6a02885bd35feebaeb8cf81898/.claude/skills/bb80-deterministic-receipts/SKILL.md
Attribution basis: Recovered original package and original project license at a pinned revision

Fields of work: Sales
Roles: Customer Success Manager, Sales Engineer, Sales Development Rep (SDR)
Specialties: Specialty not specified
Tools: Bash
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 3781d24fc75ea53f1fcbef648bcd18598f1708ad3fff3a90ccd72cc56d119947
Metadata reviewed: 2026-10-27
This metadata supersedes earlier Dave AI catalog attribution. Original instruction and supporting files are preserved.