Fabraix Red Team Playground
Free · Open source
AI security researchers
Vultrino
FreeOpen SourceAPISelf-Hosted
The moment an AI agent needs to call a real API, you face a choice with no good options: hardcode the key, paste it into a prompt, or hand it to a tool you haven't fully audited — any of which puts a live credential one log file away from exposure. Vultrino exists to close that gap.
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Get This Tool
License: MIT Any use incl. commercial
Local-run terms: Self-host the open-source MIT-licensed software and run it locally or on your infrastructure.
Pricing
- Model
- Free
Summary
Vultrino runs as a self-hosted credential proxy: agents reference an alias like 'github', and Vultrino injects the real token server-side, scrubs it from egress, and enforces a policy layer that decides whether the request is allowed at all. The agent never sees the key. AES-256-GCM encryption with Argon2 key derivation protects credentials at rest, so a stolen storage file doesn't yield anything readable without the master password. WASM plugins extend the model to PGP signing, SSH authentication, and crypto wallet transaction signing — credential types most proxy tools don't touch. The policy engine lets you scope each agent to specific URL patterns and HTTP methods, so a compromised agent role can't pivot beyond what it was granted.
Bottom line: Pick Vultrino when your agent stack needs a credential firewall you control entirely — it fits cleanly; reach for a managed secrets platform instead when your team lacks the infrastructure to run and maintain a self-hosted proxy in production.
Find your fit
Before you choose Vultrino
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Pros
- Alias-based credential isolation means agents never receive the actual secret in any response or log, so a compromised agent process or intercepted request doesn't yield a usable credential.
- WASM plugin architecture extends coverage to PGP signing, SSH authentication, and crypto wallet signing, so teams handling cryptographic operations don't have to build a separate secrets layer for non-HTTP credential types.
- AES-256-GCM encryption with Argon2 key derivation protects credentials at rest, which means a stolen storage file doesn't expose secrets without the master password — avoiding the 'encrypted but trivially crackable' pattern common in lighter-weight stores.
- Per-role policy enforcement scopes each agent to specific URL patterns and HTTP methods, so a leaked scoped API key cannot be used to perform actions outside the role it was issued for.
- Native MCP integration lets Claude, GPT, and other MCP-compatible LLMs call authenticated tools through the proxy without custom middleware, reducing the integration surface where credentials could be mishandled.
Cons
- Self-hosted is the only deployment option the vendor describes — there is no managed cloud version. Teams running agents on hosted infrastructure who cannot or will not operate a persistent self-hosted sidecar will have no path to use Vultrino without adding meaningful infrastructure overhead.
- The WASM plugin model requires a developer to implement and maintain custom plugins for any credential type not covered out of the box. Teams without WebAssembly development experience face a steep ramp before extending beyond the built-in use cases — at which point they often evaluate managed secrets platforms like HashiCorp Vault that offer broader plugin ecosystems and enterprise support contracts.
- No hosted offering means zero-to-operational requires infrastructure setup before a single agent can route through the proxy. Teams prototyping under deadline pressure frequently skip the proxy entirely, which defeats the tool's purpose — and teams that skip it in prototyping rarely retrofit it before production.
About
- Platforms
- Self-hosted
- API Available
- Yes
- Self-Hosted
- Yes
- Last Updated
- August 14, 2026
Best For
Who it's for
- AI agent developers needing credential security
- Self-hosted environments requiring policy enforcement
- Teams using extensible plugins for custom credentials
- MCP-compatible LLM workflows
What it does well
- Secure API key usage by agents for GitHub, OpenAI, Stripe, AWS
- PGP signing of commits and documents without exposing private keys
- Crypto wallet transaction signing without seed exposure
- SSH authentication without sharing private keys
- MCP integration for Claude, GPT, and other LLMs
Integrations
Frequently Asked Questions
- Is Vultrino free?
- Vultrino offers a free option. Hosting, model usage, or optional services may have separate costs; check the pricing details and official terms.
- Is Vultrino open source?
- Yes. Vultrino is open source.
- Does Vultrino have an API?
- Yes. Vultrino exposes a developer API. See the official documentation at https://vultrino.com for details.
- Can I self-host Vultrino?
- Yes. Vultrino supports self-hosting on your own infrastructure.
- What platforms does Vultrino support?
- Vultrino is available on: Self-hosted.
Curated lists that include this category
When an AI agent must call a real API, the usual options are to hardcode a key, paste it into a prompt, or pass it to an unvetted tool, each leaving a live credential one log file from exposure.
How Vultrino works
Vultrino runs as a self-hosted credential proxy. Agents reference an alias such as ‘github’; Vultrino injects the real token server-side, removes it from egress traffic, and applies a policy layer that decides whether the request is allowed. The agent never receives the key. AES-256-GCM encryption with Argon2 key derivation protects stored credentials, so a stolen file remains unreadable without the master password. WASM plugins add support for PGP signing, SSH authentication, and crypto-wallet transaction signing.
Supported uses
The tool handles secure API key usage for GitHub, OpenAI, Stripe, and AWS; PGP signing of commits without exposing private keys; crypto-wallet transaction signing without seed exposure; SSH authentication without sharing private keys; and MCP integration for Claude, GPT, and other LLMs. It is free, self-hosted only, and ships with an API.
Trade-offs
Alias-based isolation keeps actual secrets out of agent responses and logs. The WASM plugin system covers cryptographic operations that most proxies ignore. No managed cloud option exists, and extending beyond built-in credential types requires custom WASM development.
Who it is for / who should skip it
Vultrino suits AI agent developers who need credential security in self-hosted environments, teams that want policy enforcement, and MCP-compatible LLM workflows. Teams without WebAssembly experience or those that require a managed cloud service should skip it.
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