The CAST agent roster

CAST dispatches specialist agents through a plan, implement, review, and commit cycle instead of running everything through one general-purpose model. Each of the 27 agents below is pinned to a model tier — Sonnet for reasoning-heavy implementation work, Haiku for fast, low-cost review and mechanical tasks, and Opus for the highest-stakes reviews like database migrations. Core agents cover the everyday plan-write-review-commit loop; dev-workflow agents handle narrower jobs like API contract checks, dependency audits, and CI authoring.

Core (16)

• planner

  sonnethigh

  Sequenced task plans with Agent Dispatch Manifests

• backend-writer

  sonnethigh

  Backend feature implementation across files

• frontend-writer

  sonnethigh

  Frontend feature implementation across files

• bash-specialist

  sonnethigh

  Shell scripts, BATS tests, and hook scripts

• debugger

  sonnethigh

  Root-cause diagnosis and bug fixes

• code-reviewer

  haikulow

  Per-unit diff review for correctness and conventions

• frontend-qa

  haikulow

  React, TypeScript, and accessibility review

• security

  sonnethigh

  Auth, input validation, secrets, and vulnerability audit

• test-writer

  haikulow

  Unit and integration test creation

• test-runner

  haikulow

  Test suite execution and result gating

• commit

  haikulow

  Semantic git commits with Co-Authored-By

• push

  haikulow

  Remote push with branch safety checks

• merge

  haikulow

  PR lifecycle — CI watch and squash-merge on approval

• docs

  haikulow

  Documentation, READMEs, and changelogs

• researcher

  sonnethigh

  Multi-source analysis, gap reports, and citations

• morning-briefing

  haikulow

  Daily git activity and system summary

Dev workflow (11)

• api-contract

  haikulow

  REST API breaking-change detection

• db-reader

  sonnethigh

  Read-only SQL exploration and reporting

• dep-auditor

  haikulow

  Dependency audit for CVEs, licenses, and compatibility

• devops

  haikulow

  CI/CD and GitHub Actions workflow authoring

• email-drafter

  haikulow

  Drafts Gmail messages and syncs showcase READMEs

• eval-writer

  sonnethigh

  Eval and benchmark fixture author for agent prompts

• infra-writer

  haikulow

  Docker, IaC, and deployment configuration

• migration-reviewer

  opushigh

  Database schema change safety and rollback plans

• pr-reviewer

  sonnethigh

  Holistic PR-level review at PR-open time

• release-notes

  haikulow

  Structured changelog generation from git history

• report-writer

  haikulow

  Status updates, health checks, and chain summaries