Alternative to · RequestBin
RequestBin lets you watch requests. HookSense lets your agent await them.
RequestBin pioneered paste-a-URL webhook inspection — perfect when a human is watching the page. It now lives inside Pipedream's workflow platform. But an AI agent can't watch a page; it needs to create a callback endpoint and block on the result. HookSense gives it create_callback_endpoint plus wait_for_callback over MCP, signature-verified.
What developers tell us about RequestBin
- RequestBin is a human inspector — there's no way for an agent to await a result over MCP.
- Now part of Pipedream — you land in a workflow builder, not a programmable callback primitive.
- Free bins expire after 48 hours, useless for a long-running tool call or human-in-the-loop step.
- No signature verification and no wait_for_callback primitive for an agent to block on.
Why teams switch
Your agent awaits the result over MCP
create_callback_endpoint then wait_for_callback — the agent blocks until the signed payload arrives. No page to watch, no polling.
MCP-native, one command
`npx @hooksense/mcp` adds the callback toolset to Claude or Cursor — create, wait, verify, replay.
Signature-verified callbacks
verify_signature is built in, so an agent only acts on a payload it can trust. RequestBin offers no signature checks.
Auto-retries and dead-letter (soon)
Failed callbacks retry with backoff and land in a dead-letter queue so an agent never silently loses a result. Paid plans are in early access.
Pricing, side by side
RequestBin
$0 (in Pipedream)
Free bins expire in 48h; lives inside the Pipedream workflow platform
HookSense
$0 / $29/mo
Catch: callback endpoints + MCP. Hook: more endpoints, signature verification, retries (soon)
How to migrate (15 minutes)
- 1Install the MCP server: `npx @hooksense/mcp` in Claude or Cursor.
- 2Have your agent call create_callback_endpoint for a signed callback URL.
- 3Hand the URL to the long-running tool, async job, or human approver.
- 4The agent calls wait_for_callback and blocks until the signed result arrives.
- 5Use verify_signature and get_callback_payload to act on a trusted payload.
FAQ
Is HookSense the modern RequestBin?
In spirit it shares the paste-a-URL simplicity, but the focus has shifted: RequestBin is a human inspector, HookSense is the agent-native callback layer. Your agent creates an endpoint and awaits the signed result over MCP rather than you watching a page.
Can I still inspect what landed?
Yes — list_callbacks and get_callback_payload let you inspect captured callbacks. But the core value is the wait_for_callback primitive your agent blocks on.
How does an agent get the result back?
It calls wait_for_callback over MCP, which blocks until the signed payload arrives or times out — no 48-hour bin, no manual refresh.
Give your agent a callback URL.
Add HookSense to Claude or Cursor with `npx @hooksense/mcp`. Free to start; request early access for paid plans.
Get a callback URL