Crate spar 

spar: two coding agents alternate implementing and reviewing GitHub issues until a pull request converges.

A single model reviewing its own work grades its own homework. Two models with different training and different failure modes catch different things, and the disagreements are the useful part.

Re-exports

pub use error::Result;

pub use error::SparError;

Modules

agent

Driving one CLI.

answer

Answering what an issue asks of you.

brainstorm

Brainstorming with the pair: existing pieces, paired in ways nobody has.

checkin

Answering the comments other people left on a pull request.

cli

The command line.

clock

Dates and times without a date crate.

code

Turn a project request into an issue before handing it to the normal run.

comments

Reading what other people said on a pull request or an issue, and answering it.

config

Configuration, and the agent presets that make a new CLI a data change rather than a code change.

error

One error type. Every failure that a user could plausibly cause carries a sentence explaining what to do about it, because a failure whose reason is missing from the message costs more than the failure itself.

followups

The local follow-up queue, and working it.

jsonx

Getting structured data back out of a model, and hashing it stably.

listen

Listening for what happens after a review.

logging

Progress goes to stderr so stdout stays parseable. --quiet silences progress but never silences a warning or an error: those are exactly what quiet mode would otherwise bury.

model

The shapes that cross the boundary between spar and a model, and the shapes spar keeps for itself.

proc

Running external commands.

progress

How far a run has got through the work it picked up.

repo

git and gh. Every outbound string passes through the style and concision gates before it reaches GitHub.

review

Alternating custody until a PR converges.

review_only

Reviewing a pull request without touching it.

schema

JSON schemas for the three structured exchanges.

spend

What a run spent.

split

Breaking one issue or one pull request into smaller ones.

style

Two gates over every string spar sends to GitHub.

textsim

Deciding whether two pieces of prose make the same point.

tracker

A tracking issue’s checklist, read as work.

triage

Both agents judge every issue independently, then the two verdicts are reconciled mechanically.

Macros

bail

Return early with a SparError.

log

logdim

logwarn

spar_err

Build a SparError with format! syntax.