Honest comparison
Svix is webhooks-as-a-service: send, ingest, and stream machine-to-machine events with retries and signing. Pushary is a human-in-the-loop platform: an agent calls decisions.ask(), a person answers on their phone, and the agent continues on a fail-closed decision. Different jobs, and this page keeps them straight.
The confusion usually starts with the word webhook. Both products have signed webhooks in the feature list, so both surface in the same searches. The distinction that matters: in Svix, a webhook is the product, delivering events from one server to another with the receiving server's status code as the outcome. In Pushary, a webhook is the last step of a human loop, telling your backend that a person approved, declined, or replied. If your recipient is a server, you want Svix. If your recipient is a person whose answer the agent must wait for, you want Pushary.
Svix resolves a delivery: attempted, retried on a backoff schedule, eventually delivered or marked failed, with the receiving server's status code as the signal. Pushary resolves a decision: approved, declined, answered, or expired into a fail-closed no. An agent guarding a refund needs the second kind of outcome, because a 200 from a server says nothing about consent.
Svix destinations are HTTP endpoints, queues, databases, and storage, and its Slack-style connectors are documented as one-way transformations with no answer capture. Reaching a person's lock screen, collecting their choice, and enforcing a window is a different stack: enrollment, native push and PWA push notifications, a pending decision store, and a ledger. That stack is Pushary's whole product.
Pushary's resolution webhook is signed and lands wherever your backend listens, which can be behind Svix Ingest along with your other inbound events. Machine events through Svix, human decisions through Pushary, one backend joining them. Choosing one does not mean leaving the other.
For webhook infrastructure, Svix is the benchmark: MIT open-source core, mature retries and recovery tooling, an embeddable customer portal, ingestion with provider-specific verification, and event streaming, with a real free tier and enterprise compliance posture. It also ships genuinely useful agent skills and an MCP server for building on Svix. None of that is Pushary's job, and if webhooks are your problem, use Svix for them.
| Feature | Pushary | Svix |
|---|---|---|
| Blocks an agent until a human answersCORE | ||
| Fail-closed decision on timeout | ||
| Reaches a person's phone (keyless one-tap enrollment)ENROLL | ||
| Confirm, multiple-choice, and free-text answers | ||
| Durable decisions ledger with per-decision query | ||
| Signed webhooks | ||
| Send webhooks to your customers at scale (retries, portal) | ||
| Ingest and verify third-party webhooks | ||
| Cross-company event streaming to storage and SIEM sinks | ||
| Open-source core, self-hostable | ||
| Pricing | Partner $99/mo, public and self-serve | Free tier + usage-based (see their pricing) |
Competitor rows reflect Svix's public docs and pricing page as of July 2026. Check their docs for current state.
Mostly no, and this page says so. Svix moves events between machines: your product sends webhooks to your customers' servers, with retries, signing, and a portal. Pushary moves a decision between an agent and a person: the agent asks, a human answers on their phone, the agent continues. Teams land on this comparison because both show up when you search for agent approval infrastructure, so the honest answer is a map, and plenty of stacks run both.
Not out of the box. Svix delivery is asynchronous webhooks where the response signal is the receiving server's HTTP status code, and their docs document no approval feature, no blocking call, and no way to capture a person's answer. You could build an approval system that uses Svix to deliver events to your own backend, and you would still be building the human side (delivery to a person, the wait, the timeout, the record) yourself.
Yes, a developer-tooling one. Svix ships official agent skills and an MCP server that help coding agents integrate and debug Svix itself (github.com/svix/ai). That is agents building webhook pipelines, which is useful and different from an agent pausing for a human decision, which is what Pushary provides.
A common shape: Pushary handles the human decision, and its signed webhook on resolution lands in your backend, which might well be behind webhook infrastructure like Svix Ingest. Machine events flow through Svix, human decisions flow through Pushary, and your backend joins them.
Whenever the job is webhooks: sending them to customers reliably at scale, ingesting and verifying third-party ones, or streaming events across company boundaries. It is open-core, mature, and built exactly for that. Pushary is the right choice when the event is a question only a person can answer.
enroll(externalId) connects the phone. decisions.ask() blocks on the answer, fail-closed, with every outcome in a durable ledger. Works with the Vercel AI SDK, LangGraph, CrewAI, Mastra, the OpenAI Agents SDK, Eve, Hermes, and MCP.
