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Agent API Proxy with Human-in-the-Loop Approvals
An API gateway designed specifically for autonomous systems. It intercepts outgoing requests to third-party services, allowing read operations while automatically queuing state-changing actions (like sending an email or deleting a file) for human approval via Slack or email.
Why this matters
You are building an automated workflow that needs access to your inbox or cloud infrastructure to be genuinely helpful. However, granting direct API keys means a single malicious input could result in deleted databases or mass-forwarded password reset links. Standard platform permissions are often all-or-nothing, forcing you to choose between a useless, disconnected tool and a massive security vulnerability. You need a way to let the system prepare actions without executing them blindly.
- · Built for Developers and companies building autonomous workflows that interact with sensitive external services..
- · Most likely monetization: SaaS subscription based on request volume and integrated platforms..
The Pain · Narrative
You are building an automated workflow that needs access to your inbox or cloud infrastructure to be genuinely helpful. However, granting direct API keys means a single malicious input could result in deleted databases or mass-forwarded password reset links. Standard platform permissions are often all-or-nothing, forcing you to choose between a useless, disconnected tool and a massive security vulnerability. You need a way to let the system prepare actions without executing them blindly.
Score Breakdown
Go-to-Market
Security-conscious indie hackers and startup teams deploying LLM-based assistants for internal operations.
~20,000 active developers actively building autonomous integrations
Hacker News launch and developer-focused communities showcasing 'How I safely gave my AI access to Gmail'
$29/month for starter proxy usage
15 paying teams routing active traffic through the gateway within 4 weeks of launch
MVP Scope · 1–2 weeks
- Define the architecture for an interception proxy using Node.js or Go
- Implement basic OAuth token storage and proxy routing for a single service (e.g., Gmail)
- Create the policy engine to differentiate between GET (read) and POST/PUT/DELETE (write) requests
- Build a simple webhook system to catch write requests and pause execution
- Draft API documentation showing how to replace standard base URLs with the proxy URL
- Develop a Slack bot integration to receive paused requests and present Approve/Deny buttons
- Implement the callback logic to execute the paused request upon Slack approval
- Build a basic web dashboard for users to view request logs and configure policies
- Implement rate limiting and basic security headers for the proxy endpoints
- Launch a beta testing environment and invite 10 developer contacts to test the flow
Differentiation
Why This Might Fail
Self-rebuttal — the most important trust signal
- 1Developers might prefer to build this logic directly into their own codebases rather than paying for a proxy service.
- 2Major API providers (Google, Microsoft) might release 'agent-safe' granular token scopes, rendering the proxy obsolete.
- 3Handling proxy traffic securely requires high trust; a single breach of the platform would instantly destroy the business.
Evidence Summary
How AI synthesized this insight — no verbatim quotes
Commenters explicitly note that the true danger of automated systems lies not in local execution, but in third-party service access. Several users pointed out that an attacker could trigger password resets or forward sensitive data if an assistant holds email credentials. A highly upvoted sentiment suggested that the ideal solution is treating the system like an enthusiastic junior employee, using read-and-draft permissions where all final actions must be reviewed and approved by a human.
Action Plan
Validate this opportunity before writing code
Recommended Next Step
Build
Strong demand signals detected. Real pain, real willingness to pay — start building an MVP.
Landing Page Copy Kit
Ready-to-paste copy based on real Reddit community language — no editing required
Headline
Agent API Proxy with Human-in-the-Loop Approvals
Sub-headline
An API gateway designed specifically for autonomous systems. It intercepts outgoing requests to third-party services, allowing read operations while automatically queuing state-changing actions (like sending an email or deleting a file) for human approval via Slack or email.
Who It's For
For Developers and companies building autonomous workflows that interact with sensitive external services.
Feature List
✓ Proxy endpoint that wraps common APIs (Gmail, AWS, GitHub) ✓ Configurable policy engine (Auto-allow reads, Queue writes) ✓ Slack/Discord integration for one-click human approval ✓ Audit logs of all requested and executed actions ✓ Draft-mode translation (converts 'send' requests into 'save as draft' automatically)
Where to Validate
Share your landing page in r/HN · ai agent — that's exactly where these pain points were discovered.
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