AgentIndex icon
AgentIndex
harvey logo
harvey
★ 2.8k
vs
loopx logo
loopx
★ 6.4k

harvey vs loopx

harvey: Harvey is an autonomous sales agent that finds businesses, learns something specific about each, writes and sends cold email, and works replies toward a meeting. It runs locally in a 15-minute loop using a Claude Code or Codex subscription instead of a per-token API bill, and by default every email waits for approval.; loopx: LoopX is a local-first semantic control plane and research workbench for long-running agent teams. It keeps goals, accepted requirements, decisions, ownership and evidence durable across sessions and runtimes such as Codex, Claude Code and DeepSeek Harness, so agents and people can judge progress by what changed.

01

TL;DR

harvey logo
harveyWorkflow Automation · ★ 2.8k

Run outbound prospecting to small local businesses without Apollo or ZoomInfo

Read harvey full review →
loopx logo
loopxWorkflow Automation · ★ 6.4k

Keep a coding or research agent working across many sessions

Read loopx full review →
02

Side-by-Side Comparison

Field
harvey logoharvey
loopx logoloopx
Category
Workflow Automation
Workflow Automation
Stars
★ 2.8k
★ 6.4k
License
MIT
Apache-2.0
Install Command
python3.13 -m venv .venv && source .venv/bin/activate && pip install -e .
python3 -m pip install --upgrade loopx && loopx workflow-skills --install
Updated
1d ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
sales-automation, cold-email, prospecting
long-horizon, agent-control-plane, codex
03

Features

harvey logoharvey
01Discover, profile, enrich and verify pipeline for local businesses
02Uses Claude Pro/Max or ChatGPT plans through the CLI, not API keys
03Approval outbox by default, with an optional autopilot mode
04Deterministic pre-send gate, opt-out handling and send windows in the recipient's time zone
05Local dashboard on localhost:5555 backed by SQLite
loopx logoloopx
01Durable goals, decisions and evidence across sessions and restarts
02Agent-native Kanban with claims, leases, gates and writebacks
03Works through Codex, Claude Code, DeepSeek Harness and other hosts
04Human authorization still governs protected actions
05Published long-horizon benchmark study on LHTB
04

Use Cases

harvey logoharvey
↳Run outbound prospecting to small local businesses without Apollo or ZoomInfo
↳Draft personalized cold email sequences for human approval
↳Triage replies and hand complex conversations back to a person
loopx logoloopx
↳Keep a coding or research agent working across many sessions
↳Coordinate peer agents with explicit ownership and handoff
↳Run multi-day experiments and keep their evidence
FAQ

FAQ

What is the difference between harvey and loopx?
Both harvey and loopx are in the Workflow Automation category. harvey has 2.8k stars, while loopx has 6.4k stars.
Which is better, harvey or loopx?
The best choice depends on your use case. Choose harvey if Run outbound prospecting to small local businesses without Apollo or ZoomInfo, and loopx if Keep a coding or research agent working across many sessions.
Is harvey free or open source?
Yes, harvey is open source on GitHub (MIT).
Is loopx free or open source?
Yes, loopx is open source on GitHub (Apache-2.0).
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