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reserved-handle-policy

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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.

reserved-handle-policy/SKILL.md

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Last checked
Nov 11, 2026

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198
Repository last updated
Nov 9, 2026
License
MIT

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# 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.
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