SlingHook
Inspect, debug and replay captured webhooks (Stripe, GitHub, Shopify) from your AI agent.
- tools
- 11
- auth
- Secret needed
- transport
- STDIO
- env vars
- 2
- last updated
- Nov 9, 2026
Tools
11 toolsPublic tool metadata for what this MCP can expose to an agent.
list_endpointsYour catch URLs and where each one relays
Your catch URLs and where each one relays
No parameter schema in public metadata yet.
list_eventsCaptured webhooks as short summaries (no bodies). The 50 newest on every plan; query and before_id search full history (Pro)
Captured webhooks as short summaries (no bodies). The 50 newest on every plan; query and before_id search full history (Pro)
No parameter schema in public metadata yet.
get_eventOne webhook in full: headers, query, body (long bodies cut)
One webhook in full: headers, query, body (long bodies cut)
No parameter schema in public metadata yet.
debug_signatureWhy the signature failed, optionally against a candidate secret
Why the signature failed, optionally against a candidate secret
No parameter schema in public metadata yet.
replay_eventRe-sends the webhook from your machine to your handler, records it, and returns the verdict: fixed, regressed, still failing or still passing
Re-sends the webhook from your machine to your handler, records it, and returns the verdict: fixed, regressed, still failing or still passing
No parameter schema in public metadata yet.
get_replay_resultReplay history and fix verification verdict (both response bodies on Pro)
Replay history and fix verification verdict (both response bodies on Pro)
No parameter schema in public metadata yet.
list_scenariosSaved scenarios (ordered sets of events) on an endpoint
Saved scenarios (ordered sets of events) on an endpoint
No parameter schema in public metadata yet.
run_scenarioReplays every step of a scenario from your machine to your handler and reports each step (back to back, or recorded gaps capped at 5s with keep_timing; 3 runs a minute)
Replays every step of a scenario from your machine to your handler and reports each step (back to back, or recorded gaps capped at 5s with keep_timing; 3 runs a minute)
No parameter schema in public metadata yet.
generate_handlerTypes, a fixture and a test (TypeScript, Python, PHP or Go) from a real event, to build a handler around. Writes no files itself
Types, a fixture and a test (TypeScript, Python, PHP or Go) from a real event, to build a handler around. Writes no files itself
No parameter schema in public metadata yet.
compare_eventsWhat differs between two webhooks, field by field (defaults to the previous event of the same type)
What differs between two webhooks, field by field (defaults to the previous event of the same type)
No parameter schema in public metadata yet.
create_endpointA new catch URL (same name returns the existing one; at most 5 per session; no secrets through the chat)
A new catch URL (same name returns the existing one; at most 5 per session; no secrets through the chat)
No parameter schema in public metadata yet.
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SLINGHOOK_TOKENsecretSlingHook API token (shk_...). Optional after running `npx slinghook login` once.
SLINGHOOK_SERVERServer URL. Defaults to https://slinghook.co.za; set it for a self-hosted server.
Readme
slinghook CLI
Forwards webhooks captured by a SlingHook server to a server on your machine,
such as localhost:3000. A hosted SlingHook instance can't reach your localhost,
so the CLI makes the connection outbound, the same way stripe listen does.
Requires Node 20.17+.
npm install -g slinghook
slinghook auth login --server https://slinghook.co.za
slinghook auth status # who you're logged in as
slinghook endpoints # list your endpoint UUIDs
slinghook mcp # MCP server for AI agents (see below)
slinghook listen <uuid> --forward http://localhost:3000/webhooks
# <uuid> can also be the catch URL you copied, e.g. https://slinghook.co.za/c/<uuid>
Details
- Repository
- github.com/dylancourtney584/slinghook-cli
- Website
- slinghook.co.za
- Categories
- AI & LLM Tools, Developer Tools, Finance & Commerce
- Package
slinghook- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active
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