schema-author SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
schema-author from itechmeat/open-second-brain is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add itechmeat/open-second-brain/schema-author@git:20260803.0ae4b09Pins git:20260803.0ae4b09 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- itechmeat/open-second-brain
- Path
skills/schema-author/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260803.0ae4b09, committed Aug 3, 2026
- First version recorded
- May 30, 2026
- Size
- 2,050 bytes
- Repository stars
- 492
- License
- MIT
Use when adding, renaming, reviewing, or explaining Brain schema tokens, aliases, prefixes, link types, extractability, or expert routing in Open Second Brain vaults.
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
# Schema Author Use this skill when a task changes the active Brain schema pack in `Brain/_brain.yaml` or reviews content against that schema. ## Workflow 1. Inspect the active schema pack with `schema_inspect` (`view="active_pack"`) or `o2b brain schema --json`. 2. Check current usage and findings with `schema_inspect` views `stats`, `lint`, and `orphans`. 3. Explain candidate tokens with `schema_inspect` (`view="explain_type"`) before renaming or deleting them. 4. Preview the batch first with `schema_apply_mutations` (`dry_run=true`) or `o2b brain schema apply --dry-run --mutation ...`: it returns the pack that would result and its diff and writes nothing at all - no config write, no audit record, no lock file. It runs the same pack validator the apply runs, so a batch that validator rejects raises identically in both. It does not run the two checks that exist only because the apply writes: the vault-identity write guard, and the atomic writer's re-parse of the rendered YAML. A batch that renders to unparseable YAML previews clean and fails on apply, so treat a clean preview as "the mutations are valid", not as "the apply will succeed". …
Read the whole file at its exact version.
How to install
mdr add itechmeat/open-second-brain/schema-author@sha256:2c37178a64e9dd9eThe line at the top of this page pins the label git:20260803.0ae4b09, 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_i5kl4iunbvzedbod)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 30, 2026 and Aug 3, 2026, about one every 32 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260803.0ae4b09 latest | 2026-08-03 | 0ae4b09 | 2,050 B | A | view · diff |
| git:20260605.957a403 | 2026-06-05 | 957a403 | 1,361 B | A | view · diff |
| git:20260530.40d4e2b | 2026-05-30 | 40d4e2b | 1,332 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 (2050 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
itechmeat/open-second-brain · 492 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i5kl4iunbvzedbod GET https://markdownregistry.com/api/v1/resolve?ref=itechmeat/open-second-brain/schema-author GET https://markdownregistry.com/api/v1/blob/2c37178a64e9dd9e1e9268edd836f0535ecf74b2b63ff4b02f0297ae7e8f6676
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.
More from itechmeat/open-second-brain
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