Promptheus / agents · Free · CC0 · No sign-up

A crew of AI subagents for your codebase.

Drop-in subagents for Claude Code & Cursor — a security auditor, a debugger, a test writer, a system architect and 26 more. Each one a focused, senior-level operator. Copy the file, or install it in one command.

Meet the 30 agents How it works

Pick a specialist

Browse the crew by discipline. Each agent is a focused, senior-level operator for one job.

Copy or install

Grab the Claude Code file, a Cursor custom mode or the raw system prompt — copy it, or install it with one command.

Delegate

Drop it in your repo and your main agent hands off the right work to the right specialist.

Review

Read your code and tell you what's wrong — before it ships.

sonnet

Code Reviewer

Correctness-first code review

Reviews your diff like a senior — correctness, then security, then design.

opus

Security Auditor

Adversarial security review

Hunts injection, broken authz, leaked secrets and unsafe deserialization.

sonnet

PR Reviewer

Whole-PR structured review

Reads the whole branch and returns blocking issues, nits and praise.

sonnet

Accessibility Auditor

WCAG / a11y review

Finds div-buttons, missing labels, keyboard traps and contrast fails.

sonnet

Performance Auditor

Bottleneck hunting

Measures first, then kills the real bottleneck — no premature micro-opts.

sonnet

Dependency Auditor

Supply-chain review

Vulns, licenses, dead packages and bloat — with a safe upgrade path.

Testing

Prove it works, and keep it that way.

sonnet

Test Writer

Unit & integration tests

Writes behaviour-focused tests: happy path, edges, error paths.

sonnet

E2E Tester

End-to-end flows

Playwright flows with role-based selectors and zero sleep()s.

opus

Flaky Test Hunter

Flake diagnosis & fix

Roots out timing, order and shared-state flakes — no retry band-aids.

Code

Fix, refactor, migrate and understand code with method.

opus

Debugger

Root-cause diagnosis

Reproduce, bisect, fix the cause — not the symptom — then add a test.

sonnet

Refactorer

Behaviour-preserving refactors

Small, test-green steps that change structure, never behaviour.

opus

Migration Specialist

Framework & version migrations

Migrates frameworks and versions incrementally, green at every step.

sonnet

Legacy Archaeologist

Understand unfamiliar code

Maps unfamiliar code — data flow, side effects, landmines — before you touch it.

sonnet

Bug Triager

Reproduce & localize bugs

Turns a vague report into a reliable repro and a scoped root cause.

Architecture

Decide well before you build.

opus

System Architect

System & feature design

Designs the approach, names the trade-offs, recommends one with reasons.

opus

API Designer

REST & GraphQL contracts

Resource-first contracts: right verbs, status codes, errors, versioning.

opus

Database Optimizer

Schema, indexes & queries

Reads EXPLAIN, fixes the index, kills the N+1 — set-based by default.

opus

Planner

Implementation planning

Breaks a request into an ordered, verifiable plan grounded in the codebase.

DevOps

Ship it safely and keep it running.

sonnet

DevOps Engineer

CI/CD & infrastructure

Pinned, least-privilege, cached pipelines and reproducible infra.

sonnet

Docker Optimizer

Image size & build speed

Multi-stage, cached, non-root, tiny images — no secrets in layers.

opus

Incident Responder

Production incident triage

Stabilize, diagnose, mitigate minimally, then a blameless postmortem.

sonnet

Observability Engineer

Logs, metrics & traces

Structured logs, RED/USE metrics and OTel traces you can actually debug with.

haiku

Release Manager

Releases & changelogs

Semver bump, user-facing changelog and release notes from the diff.

Docs

Explain the why — in code, commits and docs.

sonnet

Doc Writer

READMEs, docs & docstrings

READMEs that actually run, docstrings that explain why — kept in sync.

haiku

Commit Crafter

Commits & PR descriptions

Staged diff → atomic Conventional Commits + a real PR description.

sonnet

ADR Writer

Architecture decision records

Captures the decision, the alternatives and the consequences as an ADR.

sonnet

Code Explainer

Explain how it works

Explains how a system really works — flow, intent, and the gotchas.

Data & AI

Analysis, prompts and models done right.

sonnet

Data Scientist

Analysis & insight

Honest EDA — vectorized, assumptions stated, caveats not hidden.

opus

Prompt Engineer

Prompts & evals

Prompts with structured output and guardrails — proven by evals, not vibes.

opus

ML Engineer

Training & model code

Reproducible training loops — no leakage, seeded, val-tracked, checkpointed.

30 agents · public domain (CC0) · a Promptheus project