# handles

> ⚠️ **Experimental — generated with no human supervision.** This realm was
> produced automatically by an MCP-driven agent to exercise the gno MCP server
> and tooling, and to generate test content for gno compilers, linters and
> formatters. **Not audited. Not for production.** Full context & folder README:
> [r/moul/x/daily](https://github.com/moul/gno-contracts/blob/main/r/moul/x/daily/README.md)

---


A tiny on-chain nickname registry. Any address can claim one unique handle
(3-20 lowercase letters/digits, starting with a letter), attach a short bio,
transfer the handle to another address, or release it back into the pool.
Two `avl.Tree` indexes (`handle -> record`, `owner -> record`) keep lookups
in both directions cheap and deterministic.

Realm path: `gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/handles`

## Example calls

```
Register(cur, "moul")          # claim the handle "moul" for the caller
SetBio(cur, "building gno stuff")
Transfer(cur, g1...recipient)  # hand the handle to another address
Release(cur)                   # free the handle back up
OwnerOf("moul")                 # (address, bool)
HandleOf(g1...)                 # (string, bool)
Count()                         # number of registered handles
```

`Render("")` lists every registered handle in a table; `Render("/moul")`
shows a single handle's detail page (owner, bio, block registered).

## Toolchain status

Built and tested against a local `gno` build at `master.3130+bf5b31eda`
(GNOROOT pointed at a full `gnolang/gno` checkout). `gno test .` and
`gno lint .` both pass (6 tests, 0 lint issues). Note for test authors:
plain `recover()` did not catch panics thrown across a `cross(cur)`
boundary in this toolchain build — the non-crossing call form
(`Register(cur, ...)` instead of `Register(cross(cur), ...)`) was used
in the two panic-expectation tests instead, since no realm boundary is
crossed and there was nothing to revive.

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---

Part of **[moul/gno-contracts](https://github.com/moul/gno-contracts)** — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.

**Dependency graph:**

![gno.land/r/moul/x/daily/handles/v0 dependency graph](https://raw.githubusercontent.com/moul/gno-contracts/main/_assets/gno.land/r/moul/x/daily/handles/v0/deps.png)

> 🧪 **Highly experimental — potentially vibe-coded.** Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: [DISCLAIMER](https://github.com/moul/gno-contracts/blob/main/DISCLAIMER.md).

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