TokenGate — Fine-grained permissions for coarse-grained APIs.

Published: (March 15, 2026 at 08:10 PM EDT)
2 min read
Source: Dev.to

Source: Dev.to

The Problem

Most third‑party APIs (Stripe, Salesforce, Slack, GitHub) force you to grant full account access with a single token—no fine‑grained scopes. When multiple internal services or AI agents share that token, you’re violating least‑privilege and expanding your breach surface. Teams either accept the risk or spend weeks building custom proxy layers in‑house.

What We’re Building

TokenGate sits between your code and any third‑party API, intercepting requests and enforcing granular permissions without touching your integrations. Define policies in plain JSON (method, path, payload rules), deploy as a Docker container or Lambda, and instantly restrict what each internal service can do—read‑only access, specific endpoints, rate limits, and action blocking. Pre‑built templates for Stripe, Salesforce, Slack, and GitHub ship out of the box.

Who It’s For

Platform engineers and security leads at SMB and mid‑market SaaS companies (50–500 employees) building AI agents, multi‑tenant products, or subject to SOC 2 / HIPAA / PCI compliance. Highest urgency in fintech and healthcare.

Key Features

  • Policy‑based request filtering: define fine‑grained rules by HTTP method, path, and payload.
  • Pre‑built templates: Stripe, Salesforce, Slack, GitHub—deploy instantly.
  • Drop‑in proxy: works with your existing integrations, no code rewrites needed.

We’re validating this concept. When you integrate third‑party APIs with coarse scopes, do you currently run them behind a custom proxy/gateway, or do you just grant full token access and manage the risk operationally?

Check out the concept page

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