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Dev tools · December 13, 2023

Key-Value Store API, No Subscription Needed

Hi HN, I often run into systems that can send email but cannot call a webhook directly I built a tool that creates an opaque email address @hook.echovalue.dev and forwards inbound messages as structured JSON to a configured endpoint. It can also call a webhook from a cron schedule, so small scheduled jobs do not need their own worker There are built-in formats for Slack, Discord, Teams, Telegram and custom JSON templates. Pricing is pay-as-you-go and intentionally low. It is mostly there as an abuse limit rather than a subscription model Docs:…

Key-Value Store API, No Subscription Needed launched on December 13, 2023 with 6 votes, #1,302 of 3,780 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 2 years on.

What it does

echoValue is a Key-Value Store API that offers a lightweight solution for developers. This API simplifies the storage and retrieval of key-value data, eliminating the need for complex server setups. No subscription, Pay what you use

echoValue provides simple, pay-as-you-go APIs for developers. Key-Value Store, Webhook API, API utilities like My IP, URL To Metadata, and DNS Lookup, plus free tools like JSONLint, GeoIP, URL Summary, Lookup, and Crontab. No subscriptions, no complexity.

Pay-as-you-go APIs and free developer tools. No subscriptions. No complexity. Just code that works. All projects share authentication and credit system. Pay once, use everywhere. Lightweight Key-Value Store API. No server setup required. Perfect for serverless apps, prototyping, metrics, and config storage. Trigger webhooks from inbound email or cron schedules. Configure an endpoint once, then receive structured JSON payloads. Small HTTP endpoints for scripts, agents, and backend workflows. Same token, same credit wallet. Inspect the public IP seen by echoValue, including request-derived geo metadata. Useful for servers, scripts, and network checks. Fetch structured metadata for a public…from echovalue.dev

In the maker’s words, at launch

Hi HN, I often run into systems that can send email but cannot call a webhook directly I built a tool that creates an opaque email address <mailboxId>@hook.echovalue.dev and forwards inbound messages as structured JSON to a configured endpoint. It can also call a webhook from a cron schedule, so small scheduled jobs…

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