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Relayna gives AI workflows a simple way to upload files, generate temporary asset URLs, pause for human review, and continue automatically after approval.
Built for modern AI workflows
Sharing files with another tool
AI Agent
file
cobbled together with
Another
Tool
Getting a human to review
AI Agent
file
cobbled together with
Human
Reviewer
Agents can generate PDFs, screenshots, images, reports, CSVs, and other assets in seconds. But the workflow usually becomes messy the moment those files need to be shared with another tool or reviewed by a human.
Private storage is too closed. Public links are too risky. Human approval often gets hacked together with email, Slack, or custom logic that is hard to maintain.
The result is fragile workflows, lost context, and manual back-and-forth in the part of the system that should feel automatic.
A REST API built for agents — call it from any LLM framework, poll for status or receive a webhook, and let humans review without an account.
One multipart request. Attach the file, set the title and instructions, and get back a ready-to-share review URL.
Request
POST /api/checkpoints Authorization: Bearer $API_KEY Content-Type: multipart/form-data attachments[][email protected] title="Approve invoice #INV-2847 for $12,400" instructions="Confirm vendor details before approving payment." callback_url="https://yourapp.com/webhooks/relayna" external_ref="inv_2847"
Response
// Share review_url with your reviewer — done { "review_url": "https://relayna.app/r/k3Hq9mXzP2…", "checkpoint": { "status": "pending", "id": "chk_9vRt4xKpMn" } }
Every review decision, uploaded asset, and webhook payload is logged automatically. You get a complete audit trail from day one — no logging pipeline, no custom admin panel, nothing to stitch together.
Review history
Decisions, reviewers & timestamps
Asset manager
Files, TTL status & download links
Webhook inspector
Every payload, live & searchable
API console
Test endpoints from the dashboard
OpenAPI Spec
AI-readyFeed into ChatGPT, Claude, Cursor, or Copilot to generate type-safe clients instantly.
Interactive Explorer
Browse all endpoints, try requests live, and inspect response schemas with the Swagger UI.
Free Webhook Catcher
A zero-friction tool to inspect incoming JSON payloads in real-time. No account required.
Everything you need to integrate Relayna lives in the browser. Explore the full API reference, try live requests, and feed the OpenAPI spec directly into your AI tools for instant client generation.
Works with your AI coding tool
Claude Code
Codex
Gemini
Cursor
Copilot
Point any tool at relayna.app/api/json/open_api and start generating typed clients instantly.
Start free. Scale as your workflows grow.
Starter
Free forever
For prototyping and side projects
Builder
billed $190/yr
For production workflows
Scale
billed $790/yr
For teams and high-volume automations
Need more? Talk to us →
Let agents upload, share, pause for review, and continue — without duct-taping storage and approval together.
Learn how to use Relayna's Assets API as a standalone secure buffer for sharing files between agents and users without requiring a human review step.
A fast, zero-friction, ad-free webhook inspector built specifically for developers building AI workflows and agents. No account required.
A deep dive into the architecture of Relayna. How we use Elixir's concurrency, the Ash Framework's declarative power, and Cloudflare R2's storage to build a secure human-in-the-loop review platform for AI agents.