CLAUDE.md@packages/coreA
CLAUDE.md@packages/core from roasbeef/loom is a CLAUDE.md file: the standing instructions Claude Code reads in that repo.
mdr add roasbeef/loom/packages/core/CLAUDE.md@git:20261012.74bd46ePins git:20261012.74bd46e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- CLAUDE.md file
- Repository
- roasbeef/loom
- Path
packages/core/CLAUDE.md- Versions recorded
- 5
- Latest version
- git:20261012.74bd46e, committed Oct 12, 2026
- First version recorded
- Oct 1, 2026
- Size
- 14,082 bytes
- Repository stars
- 11
- 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
# core
## Purpose
The vocabulary every other package shares: opaque ids, the write-once
durable rows, the closed register-namespace set, the transaction types, and
the two total codecs (JSON and msgpack) that guard every durability and
wire boundary. WP-A, and the root of the dependency DAG — `core` depends on
`gleam_stdlib` and nothing else, not even `gleam_erlang`.
## Key Types
- `core/ids.{EntryId, UsageId, OpId, SessionId}` — distinct opaque UUIDv7
wrappers, so an `EntryId` can never be passed where an `OpId` belongs.
`Generator` mints them purely from an injected `Clock` plus a seeded
SplitMix64 state; `mint_follower` reuses a parent's 48-bit time prefix
with a fresh random tail. `SessionId` (`protocol-change/008`) names a
whole session rather than a row in one — minted once at session
creation, persisted by `session`, and what the event bus keys by.
- `core/entry.Entry` — the four write-once row shapes (`MessageEntry`,
`CompactionEntry`, `BranchSummaryEntry`, `CustomEntry`), placement fields
and payload together. `UsageRow` is the ledger row.
- `core/message.Origin` distinguishes human attribution from peer-agent
…Read the whole file at its exact version.
How to install
mdr add roasbeef/loom/packages/core/CLAUDE.md@sha256:8100b6a30435dd08The line at the top of this page pins the label git:20261012.74bd46e, 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.
[](https://markdownregistry.com/a/art_q5twm5khgwgabwja)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Oct 1, 2026 and Oct 12, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.74bd46e latest | 2026-10-12 | 74bd46e | 14,082 B | A | view · diff |
| git:20261009.4de2261 | 2026-10-09 | 4de2261 | 13,531 B | A | view · diff |
| git:20261006.f7a771d | 2026-10-06 | f7a771d | 11,810 B | A | view · diff |
| git:20261004.22a0a73 | 2026-10-04 | 22a0a73 | 11,401 B | A | view · diff |
| git:20261001.a34318a | 2026-10-01 | a34318a | 11,312 B | A | view |
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (14082 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
roasbeef/loom · 11 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_q5twm5khgwgabwja GET https://markdownregistry.com/api/v1/resolve?ref=roasbeef/loom/packages/core/CLAUDE.md GET https://markdownregistry.com/api/v1/blob/8100b6a30435dd0827548087d92b950209eab73f47efaf46ff737b15fb73289d
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Guides: what a CLAUDE.md file is · keeping AGENTS.md and CLAUDE.md in sync · which agent file does what.