Wisp - Ralphing on Sprites

Wisp automates spec-driven development using pure bash loop Ralph in isolated Sprites.

Requirements

• claude (locally authenticated)
• GITHUB_TOKEN (for cloning and PR creation)
• SPRITE_TOKEN

Install

go install github.com/thruflo/wisp@latest

Setup

cd your-project
wisp init

Edit .wisp/.sprite.env with your credentials:

GITHUB_TOKEN="..."
SPRITE_TOKEN="..."

Usage

You provide an RFC. Wisp generates tasks and runs claude until done or blocked. Prompts for user input when needed. When done produces a PR.

Start a session

wisp start --repo org/repo --spec docs/my-rfc.md

With sibling repos:

wisp start --repo org/repo --spec docs/my-rfc.md --sibling-repos org/shared-lib

Interactive mode

• t — toggle tail (stream output)
• a — attach (shell into Sprite)
• d — detach (return to summary)
• k — kill session
• esc — background

Respond to questions

When the agent needs input, the TUI prompts for a response. Type and press Enter.

Complete and create PR

wisp done feat-auth

Other commands

wisp status              # list sessions
wisp status feat-auth    # show session details
wisp stop feat-auth      # stop session
wisp resume feat-auth    # resume session
wisp attach feat-auth    # shell into Sprite
wisp tail feat-auth      # stream output

Update RFC mid-implementation

wisp update --spec docs/my-rfc.md --branch feat-auth

Address PR feedback

wisp review feedback.md --branch feat-auth

Configuration

.wisp/config.yaml — limits:

limits:
  max_iterations: 50
  max_budget_usd: 20.00
  max_duration_hours: 4
  no_progress_threshold: 3

.wisp/settings.json — Claude deny rules and MCP servers.

.wisp/templates/default/ — prompt templates.

Local development

go install ./cmd/wisp

Rebuilds to $GOPATH/bin. Run again after changes.

Running tests

make test                            # unit tests
make test-integration                # integration tests (mocks)
make test-real-sprites               # real Sprite tests
make test-e2e                        # E2E CLI tests

See Testing Guide for credentials setup, debugging, and cleanup.

Docs

• RFC — implementation specification
• PRD — product requirements
• Testing — test tiers, setup, and debugging