reserved-handle-policy SKILL.md skillA
reserved-handle-policy from swyxio/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add swyxio/skills/reserved-handle-policy@git:20260714.0ab390ePins git:20260714.0ab390e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- swyxio/skills
- Path
reserved-handle-policy/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260714.0ab390e, committed Jul 14, 2026
- First version recorded
- Jul 14, 2026
- Size
- 4,549 bytes
- Repository stars
- 194
- License
- MIT
Design, implement, audit, or refresh protected username and handle namespaces for public products. Use whenever a product has open signup, mutable handles, profile URLs, impersonation or squatting risk, reserved route names, short usernames, common-word or common-name claims, developer/AI terminology, notable social identities, or administrator-approved handle assignment—even if the user only asks for a username denylist.
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
# Reserved Handle Policy Use this skill to protect a public handle namespace without turning a broad list into an unexplained permanent ban. ## Start with the policy model Separate two kinds of restriction: 1. `hard_reserved`: platform routes, authority terms, security identities, and service names that users must never claim. 2. `manual_claim_required`: scarce or impersonation-prone names that an administrator may assign after identity review. Do not report both as merely `taken`. A caller needs to distinguish an existing account, a permanent platform reservation, and a claim that can be reviewed. Read [rationale.md](references/rationale.md) before changing the tiers or source cohorts. Load [reserved-handles.toml](references/reserved-handles.toml) only when implementing, auditing, or inspecting the concrete list; it is intentionally kept out of the default context because it contains thousands of names. ## Implementation workflow 1. Locate the canonical handle validator, signup command, rename command, availability endpoint, database uniqueness constraints, and administrator mutation boundary. …
Read the whole file at its exact version.
How to install
mdr add swyxio/skills/reserved-handle-policy@sha256:e57746247fff4bb6The line at the top of this page pins the label git:20260714.0ab390e, 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_ph7wsnvtse6vg55n)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Jul 14, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260714.0ab390e latest | 2026-07-14 | 0ab390e | 4,549 B | A | view · diff |
| git:20260714.64a1a47 | 2026-07-14 | 64a1a47 | 4,299 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 (4549 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
swyxio/skills · 194 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ph7wsnvtse6vg55n GET https://markdownregistry.com/api/v1/resolve?ref=swyxio/skills/reserved-handle-policy GET https://markdownregistry.com/api/v1/blob/e57746247fff4bb6629cffb0384f2c9409b7e066d23121f394783220b151b558
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.