project-model SKILL.md skillA
project-model from sara-star-quant/presence is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sara-star-quant/presence/project-model@git:20260426.243df5aPins git:20260426.243df5a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sara-star-quant/presence
- Path
skills/project-model/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260426.243df5a, committed Apr 26, 2026
- Size
- 3,173 bytes
- Repository stars
- 8
- License
- Apache-2.0
When working in a codebase you've touched before, consult and update the persistent project model maintained by presence. The model lives at ~/.claude/presence/projects/<repo-id>/model.md and contains terse notes about architecture, conventions, and verified facts. Use it BEFORE re-deriving things you've already learned, and APPEND to it when you confirm something non-obvious that future sessions will benefit from knowing.
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
# Project model: read and write
`presence` injects the contents of `model.md` into your context at the start of each session. Treat it as a trusted-but-stale set of notes. The previous you wrote them, but the code may have changed since.
## When to read
The model is already in your SessionStart context, so you don't need to re-read it explicitly. If you forgot or need to query a specific slice mid-session:
```bash
PRESENCE_ROOT="${CLAUDE_PLUGIN_ROOT:-$(realpath ~/.claude/plugins/presence 2>/dev/null || echo .)}"
PYTHONPATH="$PRESENCE_ROOT/lib" python3 -c "
from model import read_model
print(read_model('$PWD'))
"
```
## When to write
Append a new observation when **all four** are true:
1. You verified something non-obvious about this codebase (architecture decision, a convention not in CLAUDE.md, the actual command for tests/build, an invariant about data flow).
2. The fact would save a future you 2+ minutes of re-deriving.
3. The fact is unlikely to change in the next month (don't write WIP state).
4. The fact is *project-specific*. General programming knowledge belongs nowhere; you already know it.
To append:
```bash
…Read the whole file at its exact version.
How to install
mdr add sara-star-quant/presence/project-model@sha256:3a7353a0e6a37ce8The line at the top of this page pins the label git:20260426.243df5a, 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_nntyv5vpnmeydaso)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Apr 26, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3173 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
sara-star-quant/presence · 8 stars · license Apache-2.0 · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nntyv5vpnmeydaso GET https://markdownregistry.com/api/v1/resolve?ref=sara-star-quant/presence/project-model GET https://markdownregistry.com/api/v1/blob/3a7353a0e6a37ce82582975eff79f1d696991c43a0e7373fe5451476da024345
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: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.