DESIGN.mdA

DESIGN.md from aallan/vera is a DESIGN.md file: the design rules coding agents follow in that repo.

Install it, pinned
mdr add aallan/vera/DESIGN.md@git:20261015.07c784c

Pins git:20261015.07c784c in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
DESIGN.md file
Repository
aallan/vera
Path
DESIGN.md
Versions recorded
5
Latest version
git:20261015.07c784c, committed Oct 15, 2026
First version recorded
Oct 10, 2026
Size
11,604 bytes
Repository stars
418
License
MIT

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Design

Technical decisions, rationale, and prior art. For the design philosophy and FAQ, see [FAQ.md](FAQ.md). For the language specification, see [spec/](spec/). For the compiler architecture, see [vera/README.md](vera/README.md).

---

## Design principles

1. **Checkability over correctness.** Code that can be mechanically checked. When wrong, the compiler provides a natural language explanation of the error with a concrete fix — an instruction, not a status report.
2. **Explicitness over convenience.** All state changes declared. All effects typed. All function contracts mandatory. No implicit behaviour.
3. **One canonical form.** One preferred spelling per construct; for a given parse, formatting is deterministic and idempotent. No style choices.
4. **Structural references over names.** Bindings referenced by type and positional index (`@T.n`), not arbitrary names. See [`DE_BRUIJN.md`](DE_BRUIJN.md).
5. **Contracts as the source of truth.** Every function declares what it requires and guarantees. The compiler verifies statically what the solver can decide, and checks the rest at run time.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add aallan/vera/DESIGN.md@sha256:9d61db4254cad381

The line at the top of this page pins the label git:20261015.07c784c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_i2ys4xrk2qfufjqu.svg)](https://markdownregistry.com/a/art_i2ys4xrk2qfufjqu)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Oct 10, 2026 and Oct 15, 2026, about one every day.

versioncommittedcommitsizeaudit
git:20261015.07c784c latest2026-10-15 07c784c 11,604 BA view · diff
git:20261014.fa958732026-10-14 fa95873 11,414 BA view · diff
git:20261014.0b3b8e32026-10-14 0b3b8e3 11,430 BA view · diff
git:20261014.67ca15c2026-10-14 67ca15c 11,476 BA view · diff
git:20261010.73dd01d2026-10-10 73dd01d 11,394 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (11604 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

aallan/vera · 418 stars · license MIT · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_i2ys4xrk2qfufjqu
GET https://markdownregistry.com/api/v1/resolve?ref=aallan/vera/DESIGN.md
GET https://markdownregistry.com/api/v1/blob/9d61db4254cad381fc6206bb09704006ecdc37cf8d7f85007ee9f751a2e953ea

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: what DESIGN.md is and how agents use it · which agent file does what.

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