AgentIndex icon
AgentIndex
NyxID logo
NyxID
★ 40
vs
harvey logo
harvey
★ 2.8k

NyxID vs harvey

NyxID: NyxID is an open-source Agent Connectivity Gateway that allows AI agents to securely access any API, public or private, without exposing credentials. It performs credential injection, NAT traversal, and wraps REST APIs as MCP tools. It also provides per-agent isolation and a full identity layer with OIDC, RBAC, and an LLM gateway.; 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.

01

TL;DR

NyxID logo
NyxIDWorkflow Automation · ★ 40

Give Claude Code access to private APIs without sharing keys

Read NyxID full review →
harvey logo
harveyWorkflow Automation · ★ 2.8k

Run outbound prospecting to small local businesses without Apollo or ZoomInfo

Read harvey full review →
02

Side-by-Side Comparison

Field
NyxID logoNyxID
harvey logoharvey
Category
Workflow Automation
Workflow Automation
Stars
★ 40
★ 2.8k
License
Apache-2.0
MIT
Install Command
git clone https://github.com/ChronoAIProject/NyxID.git
python3.13 -m venv .venv && source .venv/bin/activate && pip install -e .
Updated
1d ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
ai-agents, api-gateway, claude-code
sales-automation, cold-email, prospecting
03

Features

NyxID logoNyxID
01Reach any API (public, private, localhost) via credential nodes and SSH tunneling
02Automatic credential injection – agents never see raw keys
03Auto-wrap REST APIs as MCP tools (OpenAPI -> MCP)
04Per-agent isolation with scoped tokens and RBAC
05Full identity layer: OIDC/OAuth 2.0, RBAC, service accounts, transaction approval, LLM gateway
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
04

Use Cases

NyxID logoNyxID
↳Give Claude Code access to private APIs without sharing keys
↳Expose internal microservices to AI agents through a single MCP endpoint
↳Secure AI agent access to self-hosted tools (Grafana, Jenkins, n8n) behind a firewall
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
FAQ

FAQ

What is the difference between NyxID and harvey?
Both NyxID and harvey are in the Workflow Automation category. NyxID has 40 stars, while harvey has 2.8k stars.
Which is better, NyxID or harvey?
The best choice depends on your use case. Choose NyxID if Give Claude Code access to private APIs without sharing keys, and harvey if Run outbound prospecting to small local businesses without Apollo or ZoomInfo.
Is NyxID free or open source?
Yes, NyxID is open source on GitHub (Apache-2.0).
Is harvey free or open source?
Yes, harvey is open source on GitHub (MIT).
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