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How Wix scaled Al-native work to 5,000 employees with Willow
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Home / Compare / Willow vs systemprompt.io
Last updated: April 2026
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Willow gives IT a managed way to find employee AI. systemprompt.io gives engineers a control plane they run themselves.

Willow automatically finds supported AI clients and local configuration files on managed devices, adds browser controls, and manages identities and background agents. systemprompt.io routes model and MCP traffic through a customer-run Rust platform with synchronous controls and customer-owned audit data.

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Choose Willow when
IT and security need managed discovery and governance across employee devices, browsers, identities, MCP access, and background agents.
Choose Arcade when
Engineering specifically wants to own a source-available Rust runtime, route several model providers, keep detailed lineage in PostgreSQL, or build compile-time extensions.
Check this first
Willow already provides private deployment, pre-execution controls, rate limits, and audit logs. Choose systemprompt.io for code ownership and model routing, not for those shared capabilities alone.

Willow

Willow finds supported employee AI on managed devices and in supported browsers, then connects discovery to identity, policy, MCP access, and agent administration.

systemprompt.io

systemprompt.io is a source-available Rust platform customers deploy and operate for model routing, MCP enforcement, agent workflows, Skills, and audit.
AT A GLANCE

Willow covers more employee AI with less platform work. systemprompt.io gives engineers ownership of the runtime code.

Both provide private deployment, pre-execution controls, rate limits, identities, Skills, agents, and audit logs. Willow adds automatic device and browser discovery. systemprompt.io adds model routing and a source-available Rust codebase.

Compare what each product covers and what your team must operate.
Willow systemprompt.io
Main job Discover and govern employee AI across devices, browsers, identities, MCP access, and background agents Run governed model, agent, and MCP traffic through customer-owned infrastructure
Before registration Finds supported local MCP configurations, Skills, agent instructions, and installed AI tools Registers agents, Skills, providers, and MCP servers configured in the platform
Runtime controls Blocks or redacts tool inputs and outputs before delivery; also supports approvals, policy conditions, and per-user rate limits Runs scope, scanner, blocklist, and token-bucket checks before connected tool execution
Model layer Governs the tools AI clients can use rather than routing model requests across providers Routes Anthropic, OpenAI, Gemini, Bedrock, Vertex, and compatible providers
Audit Logs identity, access decisions, guard actions, tool calls, responses, tokens, and execution details, with export options Stores prompt, response, identity, tool, token, and cost lineage in customer PostgreSQL
Operation Managed SaaS plus hybrid, on-premises, and air-gapped deployment Customer-run source-available Rust binary and PostgreSQL; no SaaS product
Extensibility Admin configuration, APIs, connectors, guards, hooks, and custom MCP servers Compile-time Rust extensions, jobs, routes, and MCP tools
Assurance SOC 2 Type II Framework control mappings; no independent SOC 2 or ISO 27001 certification
FOR IT AND SECURITY

Choose Willow when IT needs visibility without running another AI platform

Willow makes discovery and governance available through managed administration and existing device-management workflows.

Find AI employees configured locally

Willow finds supported AI clients, local MCP configurations, Skills, CLAUDE.md, and AGENTS.md on managed macOS and Windows devices.

Cover supported browser activity

Prompt Guard checks messages and attachments in supported web AI chats. Claude Guard separately controls risky Claude-in-Chrome actions.

Give employees governed access

Willow combines SSO, groups, approved tools, self-service workflows, Skills, machine users, and background agents.

Choose managed or private deployment

Willow offers SaaS, hybrid, on-premises, and air-gapped deployment instead of requiring every customer to operate the platform.
WHERE SYSTEMPROMPT.IO FITS

Choose systemprompt.io for source-code ownership and model routing

systemprompt.io gives engineering a Rust codebase, a built-in model gateway, PostgreSQL lineage, and compile-time extensions.

SYSTEMPROMPT.IO

Own the runtime code

systemprompt.io is a source-available Rust platform that customers build, deploy, upgrade, and operate with PostgreSQL.
SYSTEMPROMPT.IO

Use one fixed four-check pipeline

Connected MCP calls pass scope, scanner, blocklist, and token-bucket checks. Willow also blocks calls before execution, but uses configurable guards, policies, approvals, and rate limits.
SYSTEMPROMPT.IO

Route models and tools together

The gateway routes several model providers and links model requests, identities, tool calls, tokens, and cost.
SYSTEMPROMPT.IO

Extend the platform in Rust

Engineering can add compile-time extensions, routes, jobs, and MCP tools, while owning their maintenance and upgrades.
AT ENTERPRISE SCALE

Willow governs AI use across large organizations

We are six to ten months ahead of most companies in AI adoption. More code to production, fewer incidents, real outcomes. Willow is what made it possible to move that fast without slowing down our security posture.

Asaf Yonay
Asaf Yonay Head of AI Core, Wix

~5,000

weekly active users at Wix

~600

governed tools and MCPs

300K+

governed tool calls every week

Bottom line

Choose based on what your team must own

Willow finds supported employee AI before registration and governs devices, browsers, identities, MCP access, and background agents. It also provides pre-execution controls, rate limits, detailed logs, and private deployment. systemprompt.io concentrates on a customer-operated model and MCP runtime built from a source-available Rust codebase.

Use Willow if IT and security need broad visibility and governance without turning the product into a software project.Use systemprompt.io if platform engineering specifically needs model routing, compile-time Rust extensions, or ownership of the runtime code and PostgreSQL lineage.

FAQ

Frequently asked questions

Common questions from teams comparing Willow with systemprompt.io.

Does systemprompt.io discover AI employees configured locally?
systemprompt.io manages Cowork deployments and agents, Skills, providers, and MCP servers registered with its platform. Willow automatically discovers supported local MCP configurations, Skills, agent instruction files, and installed AI clients before registration.
Can both products stop tool calls before execution?
Yes. Willow applies identity checks, access rules, runtime guards, policy conditions, approvals, and rate limits. systemprompt.io uses a fixed pipeline of scope, scanner, blocklist, and token-bucket checks for connected calls.
Can both products run air-gapped?
Yes. Willow offers a fully on-premises deployment with no external runtime dependencies. systemprompt.io runs as a customer-operated Rust binary with PostgreSQL.
Which product gives customers more code-level control?
systemprompt.io. Customers run its source-available Rust platform and can add compile-time extensions, routes, jobs, and MCP tools.
Is systemprompt.io open source?
No. It is source-available under BSL-1.1, which differs from an OSI open-source license.
Is systemprompt.io independently certified for SOC 2 or ISO 27001?
No independent SOC 2 or ISO 27001 certification is listed. systemprompt.io provides control mappings for compliance frameworks.

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