# crew
Small-group coordination as a product rather than as a framework: three to
fifteen people with a shared pot, a way to decide, and a way to leave with their
share. The pure engine behind
[`r/moul/x/social/crews`](https://github.com/moul/gno-contracts/tree/main/r/moul/x/social/crews), which is the chain wiring.
The targets are real and already exist: a validator set, a working group, a
hackathon team, a five-person company. `p/moul/grants` and daokit are the
framework layer; this is the thing you can create in one transaction.
## The API
```go
cs := crew.New()
id, err := cs.Create("validators", founder, amount, height) // founder gets amount/InitialPricePerShare shares
shares, err := cs.Join(id, who, amount) // minted at the CURRENT per-share value
err := cs.Fund(id, amount) // mints nothing, every share is worth more
pid, err := cs.Propose(id, who, "ship v1", height) // any member, open for VoteBlocks
err := cs.Vote(pid, who, true, height) // weighted by shares held right now
passed, err := cs.Close(pid, height) // anyone, after the deadline
shares, amount, err := cs.Ragequit(id, who) // burn the shares, be credited the slice
amount, err := cs.Withdraw(who) // collect, zeroed before it returns
```
Reads: `Get`, `Proposal`, `Len`, `ProposalCount`, `List`, `CreditOf`,
`TotalOwed`, and on a `*Crew`: `SharesOf`, `IsMember`, `MemberCount`, `Members`,
`Proposals`, `ValuePerShare`, `PricePerShare`.
It returns errors and declares no crossing function. The caller, the height and
the amount all arrive as plain arguments, and the realm decides what to abort
on.
## Shares are the token
A share is the vote weight and the claim on the treasury at the same moment,
minted by paying in and burned by leaving. There is no second asset to issue,
distribute, or fail to make meaningful, and the exit price is the same number
that votes: a member outvoted on everything can still leave with their part of
what the crew built, and nobody has to agree to let them.
## The trap it avoids: which way the division rounds
Both divisions round **down**, so both round in the crew's favour.
| | |
|---|---|
| joining | `amount * totalShares / treasury`, so a late joiner buys at what a share is worth **now**. Rounding up would hand them a sliver of value the existing members built. |
| ragequitting | `shares * treasury / totalShares`, so a leaver takes no more than their slice and the remainder stays with the people who stayed. |
Both go through `xmath.MulDiv`, which computes through a 128-bit intermediate
and refuses rather than returning a wrong number: the naive `a*b/c` wraps to a
plausible-looking figure, which is how a payout split leaks money without
anything failing.
The dust that accrues is never stranded. The last member out holds every
outstanding share, so their division is exact and the treasury empties to the
last ugnot. `TestEveryoneRagequittingEmptiesTheTreasury` pins it on a treasury
of 3002 over three shares, which divides by nothing.
## What v0 does not do
A proposal is **advisory text**. Passing one records that the crew agreed by
share weight and executes nothing: it moves no coins, changes no membership and
binds no code. Executing a payout is the next step, and it is what turns this
into a treasury contract rather than a notice board.
A vote keeps the weight it was cast with. A member who votes and then ragequits
leaves their weight behind in the tally, because unwinding it would mean
reweighing every ballot on every share change.
There is no quorum. A crew where one member votes and the rest ignore it passes
the proposal, which is exactly as advisory as the text it carries. A tie fails.
## Two write-time rules worth knowing
`ValidName` refuses a pipe. A name is rendered as the title of a link inside a
table cell, `md.Link` escapes with the inline-text escaper, and that escaper
deliberately leaves `|` alone because a pipe is markdown-inert outside a table.
Wrapping the title in `ui.Cell` on top would double-escape and render the
backslashes, so the character is refused at write time instead.
`ValidText` allows a pipe, because free prose legitimately contains one, and
the render escapes it with `ui.Cell`. A validator and an escaper protect
against different mistakes.
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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:**
> 🧪 **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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Signatures reconstructed verbatim from vm/qfuncs — interface params keep their inline definitions.