Geas
Install when you want every Claude Code session framed as missions, contracts, evidence, and explicit user judgment instead of open-ended chat.
Overview
geas is a plugin marketplace for the Build phase that structures Claude Code agent work as Mission, Task Contract, Evidence, User Judgment, and reflection.
What is this marketplace?
- Single plugin: geas v0.1.0 structures work as Mission, Task Contract, Evidence, User Judgment, and reflection
- Forces explicit task contracts before the agent commits to implementation steps
- Evidence and user-judgment gates reduce silent assumption drift on solo builds
- Reflection loop after tasks so context carries into the next mission
- Claude Code plugin marketplace bundle—not a standalone MCP server
- Marketplace lists 1 plugin: geas at version 0.1.0
- Core model has 5 named pillars: Mission, Task Contract, Evidence, User Judgment, reflection
Community signal: 13 GitHub stars.
What problem does it solve?
Solo builders lose accountability when agents skip scoped contracts and ship answers without evidence or explicit approval.
Who is it for?
Indie developers who want disciplined agent rituals on real product work without a separate project-management tool.
Skip if: Teams that only need one-off prompts with no mission framing, or builders not using Claude Code plugin marketplaces.
What do I get? / Deliverables
After you add the marketplace, sessions follow named missions with contracts, proof, judgment calls, and reflection before the next task.
- Installed geas plugin (v0.1.0) from the marketplace bundle
- Agent sessions framed with missions, contracts, evidence, and reflection
- Clearer handoffs between consecutive agent tasks on your repo
Plugins in this marketplace
1 plugin — install individually after you add the marketplace.
Recommended Marketplaces
Journey fit
How it compares
Agent methodology marketplace, not a single integration skill or MCP finance server.
Common Questions / FAQ
Who is Geas for?
Geas is for solo and indie builders using Claude Code who want structured missions, contracts, and evidence checkpoints on agent-driven coding work.
When should I use Geas?
Use Geas when you are in active Build work and the agent keeps expanding scope or finishing tasks without verifiable evidence or your explicit judgment.
How do I add Geas to my agent?
Register the choam2426/Geas Claude Code plugin marketplace, install the Geas plugin from the bundle, and invoke it so sessions follow its Mission–Contract–Evidence–Judgment–reflection model.