---
title: Glossary
description: Every Ysra term in one place — from acceptance criteria to workers — with a link to where it's explained in full.
---

Acceptance criteria
:   The checklist a session is reviewed against: yours, derived from your goal,
    or Ysra's quality baseline. [Plans and criteria](../developer/plans.md)

Agent (worker)
:   A worker's identity and instructions, and the capabilities it may ever use.
    [Workers](../workers/index.md)

Approval
:   Your consent to one exact outside action — an email, a Slack post, a Jira
    change. Editing the content needs a new approval.
    [Actions and approvals](../knowledge/actions.md)

Autonomy policy
:   What Ysra may do without asking, for your account and per repository.
    [Autonomy policy](../workspace/autonomy-policy.md)

Browser proof
:   Interactive requirements executed in a real browser, with steps and
    screenshots. [Review and verification](../developer/review.md#browser-proof)

Budget
:   The spending ceiling for a session; Ysra stops before exceeding it.
    [Start a session](../developer/start-a-session.md#budgets)

Candidate
:   The complete change a session produced, against the exact revision it
    started from. [Developer](../developer/index.md)

Checkpoint
:   A saved, exact version of a session's work, used to resume and to rewind.
    [Steering and checkpoints](../developer/steering.md)

Citation
:   A numbered link from a Knowledge claim to a source that was actually read.
    [Sources and citations](../knowledge/sources.md)

Clean-build check
:   Installing, building and booting the candidate from a clean copy.
    [Review and verification](../developer/review.md#clean-build-check)

Deep dive
:   A research-style Knowledge answer with findings, evidence and open questions.
    [Knowledge](../knowledge/index.md)

Delivery
:   Getting a candidate into your repository: keep, commit, push a branch, or
    open a pull request. [Delivery and deployment](../developer/delivery.md)

Deployment
:   Putting a candidate live on hosting you connected — a separate, explicitly
    authorised step. [Delivery and deployment](../developer/delivery.md#deploying)

Expert
:   A configured Knowledge coworker with a purpose, sources and capabilities.
    [Experts](../knowledge/experts.md)

Grant
:   A capability a worker may use, such as web search or mail draft.
    [Create a worker](../workers/create.md#grants)

Memory
:   Facts and preferences carried across Knowledge conversations, visible and
    deletable. [Memory](../knowledge/memory.md)

Plan
:   The ordered steps of a session's work. Plan progress is not a verdict.
    [Plans and criteria](../developer/plans.md)

Playbook
:   A repeatable brief that fills the Build composer.
    [Playbooks](../developer/playbooks.md)

Pre-existing failure
:   A check that was already failing before the session changed anything.
    [Review and verification](../developer/review.md#your-checks)

Preview
:   The candidate running in its own temporary environment.
    [Previews](../developer/previews.md)

Project
:   A large objective planned as milestones and tasks, integrated into one
    candidate. [Projects](../developer/projects.md)

Repair
:   A fix scoped to one concrete failure, starting from the exact reviewed
    candidate. [Review and verification](../developer/review.md#acceptance-review)

Report
:   The receipt for one candidate: criteria, checks, effort and cost.
    [Reports and sharing](../developer/reports.md)

Rule
:   A standing instruction every Developer session reads first.
    [Rules and instructions](../developer/rules.md)

Run
:   One execution of a worker. [Runs and approvals](../workers/runs.md)

Session
:   One goal worked to a result in one repository. [Developer](../developer/index.md)

Steering
:   Redirecting a running session without restarting it.
    [Steering and checkpoints](../developer/steering.md)

Unproven
:   A criterion that couldn't be checked — never counted as passed or failed.
    [Review and verification](../developer/review.md)

Wallet
:   Your account's spending limit, drawn on by session budgets.
    [Wallet and usage](../workspace/wallet.md)

Worker
:   Work that runs on a schedule or on demand, and asks before acting outside
    Ysra. [Workers](../workers/index.md)

Workroom
:   The session screen: conversation, canvas and panels.
    [The workroom](../developer/workroom.md)

Workspace
:   The shared space for sessions, files, experts, workers and connections.
    [Workspaces and files](../workspace/index.md)