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PayHook vs OpenGrant

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PayHook compared with OpenGrant
DetailPayHook logo PayHookOpenGrant logo OpenGrant
What it doesPayment webhook debugger for Stripe, Paddle, Lemon Squeezy, Polar and Dodo Search UK grant schemes and funders from Node.js or the terminal
StageMVP Not given
FoundedNot given Not given
Based inNot given GB
Pricing modelNot given Open source
PricingFree plan: $0 forever with 1 project, signature checks for all five providers, 3 days of history with daily event limit. Pro plan: $12 per month with unlimited projects, plain-English diagnosis, fix prompts, and 30 days of history. Lifetime: $99 once, first 100 only, with everything in Pro for life Not given
Key features
  • Signature verification for Stripe, Paddle, Lemon Squeezy, Polar and Dodo
  • Plain-English diagnosis of webhook failures
  • Fix prompts for Cursor and Claude Code
  • Replay events with re-signed payloads
  • Works without localhost for cloud development environments
  • View incoming events and HTTP status codes
  • 30 days of event history in Pro plan
  • Search grants with filters for region, organisation, theme and deadline
  • Count matching grant schemes and get link to website search
  • Retrieve public facts for individual grant schemes
  • Look up funder profiles by charity number, slug or name
  • No API key required
  • No runtime dependencies
  • MIT licensed open source
  • Rate limit of 60 requests per 60 seconds per client
  • Command-line tool with --json output option
  • Access to OpenGrant MCP server tools
What makes it different
  • Diagnosis explains what went wrong, not just what arrived
  • Built for AI code editors and cloud development
  • No code changes required during beta
  • Covers five payment providers including ones Stripe CLI doesn't support
  • Core is open source at launch
  • No API key needed to use the SDK
  • Search UK grant schemes and funders from code or terminal
  • MIT licensed and open source
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)20
Citation Flow (Majestic)1615
Referring domains (Majestic)25

3 details filled in for both companies.

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