# Microblog Wall

> ⚠️ **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 public, append-only microblog for gno.land. Anyone can post a short message
(up to 280 bytes); each post records the caller's address and the block height
at which it was made. The `Render` view shows the wall newest-first, 20 posts
per page, with total count and prev/next pagination driven by the render path.

- **Realm path:** `gno.land/r/REPLACE_ADDR/microblog`
- **Gno version:** 0.9 (sapphire)

## API

- `Post(cur realm, msg string)` — crossing tx. Panics if `msg` is empty or
  longer than 280 bytes. Stores `{author, msg, height}`.
- `Count() int` — total number of posts.
- `Render(path string) string` — Markdown wall, newest-first, paginated.

## Example calls

Post a message (crossing call via `gnokey`):

```sh
gnokey maketx call \
  -pkgpath "gno.land/r/REPLACE_ADDR/microblog" \
  -func Post \
  -args "gm gno.land 👋" \
  -gas-fee 1000000ugnot -gas-wanted 2000000 \
  -broadcast -chainid sapphire-1 -remote <rpc> mykey
```

View the wall in gnoweb:

```
https://gno.land/r/REPLACE_ADDR/microblog          # page 1 (newest 20)
https://gno.land/r/REPLACE_ADDR/microblog:?page=2  # older posts
https://gno.land/r/REPLACE_ADDR/microblog:/2       # same page, path form
```

From another realm:

```go
import "gno.land/r/REPLACE_ADDR/microblog"

func Shout(cur realm) {
    microblog.Post(cross(cur), "posted from another realm")
}
```

## What changed in v1

Identical behaviour to [`v0`](https://github.com/moul/gno-contracts/tree/4f2df83869b80470eb81c48a82fdbe82256b8113/r/moul/x/daily/microblog) apart from rendering, which now goes
through [`p/moul/kit/ui`](/p/moul/kit/ui/v0) instead of the local `escapeInline`, `shortAddr` helpers.

**One address format.** Eleven realms carried their own `shortAddr` with four different truncation rules, so the same account rendered differently depending on which realm you opened. `ui.Addr` is that decision made once: 8 leading characters, an ellipsis, 4 trailing, in backticks.

**Real escaping.** The local helper replaced a handful of markdown metacharacters. `ui.Inline` and `ui.Cell` delegate to [`p/nt/markdown/sanitize`](/p/nt/markdown/sanitize/v0), which also strips bidi and zero-width characters and folds newlines, so user text cannot reorder or escape the line it sits on.

Visible change: addresses now render in monospace.

The rendering change means the output differs from v0, which under this repo's versioning rule is a compatibility change, hence a new version rather than an edit in place. `v0` stays live and untouched.

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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/microblog/v1 dependency graph](https://raw.githubusercontent.com/moul/gno-contracts/main/_assets/gno.land/r/moul/x/daily/microblog/v1/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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