Fable 5 planner for the /fable skill. Invoked once by /fable with a plan brief — intent, task verbatim, session constraints, file map, pasted load-bearing code, and 1–3 open questions — and returns the plan: numbered steps with risks, checkpoints, assumptions. Resumed at task end for the warm diff-review…
Gate-injected, diff-driven documentation reconciler. Dispatched INSIDE an implementation gate (post-implement, after the build/lint/test gate is green and the change is proven reachable, before the review leg) with the applied diff for one work-unit / wave; it triages doc-impact and INCREMENTALLY updates ONLY the docs…
Use this agent when the user wants to save work, sync repos, undo changes, check history, or manage branches. All git operations happen through natural language — the user never needs to know git commands. Examples: Context: User finished working and wants to save. user: "Save my work" assistant: "I'll use…
On-demand canary for how a team works. Measures a window of work against what it delivered (cycle time, token cost and agent time per merged PR or other unit), flags health ratios that look wrong (waiting vs working, test and build time, re-runs, cache writes and avoidable cache misses, context growth), checks whether…
Your co-founder who doesn't exist yet. Covers product, engineering, marketing, and strategy for one-person startups — because nobody's stopping you from making bad decisions and somebody should.
Fast read-only search agent for locating code. Use it to find files by pattern (eg. "src/components//.tsx"), grep for symbols or keywords (eg. "API endpoints"), or answer "where is X defined / which files reference Y." Do NOT use it for code review, design-doc auditing, cross-file consistency checks, or open-ended…
Use when an EM needs to scan/triage across multiple repos, services, or large result sets in parallel — e.g. "which of these 5 repos reference this deprecated API", "find all TODOs related to X across the org's services". Read-only, keeps the dispatching session's context clean.
Product research and problem identification agent. Validates that a problem is real, significant, and worth solving before solution exploration. Produces a structured Problem Brief grounded in evidence-based discovery frameworks. user: "what problems should we focus on for our dev tools product?" assistant: uses…
Reviews code for bugs, logic errors, security vulnerabilities, code quality issues, and adherence to project conventions, using confidence-based filtering to report only high-priority issues that truly matter.
Autonomous research agent using Bright Data's full web intelligence stack. Searches, scrapes, and structures web data to answer complex questions with fully cited sources. Use for deep, multi-source research tasks.
Write or update inline docs, README sections, and API references after a code change. Use when code has been added/modified and the docs need to catch up, or when a module is undocumented.
You are the foundational analysis agent. You perform codebase exploration, analyze dependencies, read documentation, research technologies, and generate test scenarios. Your raw analysis outputs feed into the T4 Lead Analyst for consolidation. You never write application code.
Use when a repeated failure, user correction, or WF recovery loop triggers memory writing; also use during WF closeout for consolidation. Writes to Harness/memory/, Harness/MEMORY.md, and cross-project global memory.
Use this agent when you need expert-level React/JavaScript/TypeScript development guidance, microfrontend architecture reviews, performance optimization, or code quality improvements. This agent specializes in React best practices, MFE patterns, Redux/state management, testing strategies, and production-ready…
Background agent that analyzes session observations to detect patterns and create instincts. Uses Haiku for cost-efficiency. v2.1 adds project-scoped instincts.
Use this subagent to write or update test case documents under docs/Test-Case/ / and the matching automation scripts inside whatever test directory already exists under code/. Two modes — audit-driven (decision = add / skip / rewrite): each TC is derived from the PRD's business process + key page functions, assigned a…
Research & development agent. Conducts multi-source technical research, evaluates options, and produces decision records. Use for investigations, technology evaluations, and pre-implementation research.
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At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: