substack SKILL.md skillA
substack from acedatacloud/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add acedatacloud/skills/substack@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- acedatacloud/skills
- Path
skills/substack/SKILL.md- Versions recorded
- 4
- Latest version
- v1.0, committed Aug 22, 2026
- First version recorded
- Jul 3, 2026
- Size
- 5,645 bytes
- Repository stars
- 17
- License
- a license file GitHub does not identify
Read and publish on Substack (substack.com) with the user's own login cookies (BYOC) — show who they are and their primary publication, list their published posts with stats, and publish a new post / newsletter. Use when the user mentions Substack, "my Substack", their newsletter, or publishing a post to Substack.
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
# substack — read & publish on Substack via your own cookies
Drives the user's **real** Substack account through the same internal web API
the site uses (Substack has no official public write API), authenticated by the
login cookie they captured with the ACE extension. No browser, no third-party
deps — just `urllib`. The publish flow mirrors the community `python-substack`
library: **create draft → prepublish → publish**.
The connector injects the cookie jar as an env var:
- `SUBSTACK_COOKIES` — a JSON array of cookies (`substack.sid`, `substack.lli`,
…). **Secret — never echo or print it.** Substack authenticates writes with
the session cookie alone (no CSRF token header needed).
## CLI
The skill ships [`scripts/substack.py`](scripts/substack.py) — self-contained, stdlib only.
```sh
# $SKILL_DIR can point at another skill loaded this turn — anchor on our own
# script, and re-run this at the top of every Bash block (fresh shell each time).
SUB="$SKILL_DIR/scripts/substack.py"; [ -f "$SUB" ] || SUB=$(find /tmp -maxdepth 8 -path '*/skills/*/scripts/substack.py' 2>/dev/null | head -1)
[ -f "$SUB" ] || { echo "substack script not found (SKILL_DIR=$SKILL_DIR)" >&2; exit 1; }
…Read the whole file at its exact version.
How to install
mdr add acedatacloud/skills/substack@sha256:4e4da47220af436aThe line at the top of this page pins the label v1.0, 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_6vrhth5tkohvjzyz)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 3, 2026 and Aug 22, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0 latest | 2026-08-22 | bbddf70 | 5,645 B | A | view · diff |
| v1.0 | 2026-07-05 | fdef58d | 5,641 B | A | view · diff |
| v1.0 | 2026-07-04 | 08dd3bd | 4,980 B | A | view · diff |
| v1.0 | 2026-07-03 | 352bb28 | 4,454 B | A | view |
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 (5645 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
acedatacloud/skills · 17 stars · license a license file GitHub does not identify · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6vrhth5tkohvjzyz GET https://markdownregistry.com/api/v1/resolve?ref=acedatacloud/skills/substack GET https://markdownregistry.com/api/v1/blob/4e4da47220af436a8eaf2169a0c2aadf4e589eb2414d5bad6c2069f3db6339cc
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.