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Sentinel

Monitors Stacks contracts for calls, transfers and state changes, alerting by email, Slack or signed webhook.

Free plan · From $19/moActively maintained

LegalMonitoringFree tier
runsentinel.app ↗
Open runsentinel.appAlternativesSet it up for my team
Sentinel: data, price, alternatives
At a glancechecked Oct 29, 2026

4.2k installs/mo

Widely used

For
teams running Stacks contracts that want alerts on admin changes and large outflows
Price
Free plan · From $19/mopricing page, read Oct 29, 2026
Activity
Actively maintainedrelease 4 days ago
How it runs
CLI
Used for
  • replay a watch over 90 days of past events
  • get alerted when an admin function is called
  • route contract alerts to email, Slack or webhooks
read off runsentinel.app on Oct 29, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 29, 2026

Free plan · From $19/mo

pricing page

Price Watch: every price change in the Atlas, weekly

How a program reaches itfound, not claimed · read Oct 29, 2026
  • MCP serverapp.runsentinel/sentinelverified in the MCP registry
  • Statedid not answer on 2026-10-29
  • Address to connectapi.runsentinel.app/mcp
  • API docsrunsentinel.app/docs/apithe vendor's page ↗
  • MCP docsrunsentinel.app/docs/mcpthe vendor's page ↗

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Legalby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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From people who use itnot part of the reading

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Questions this page answers
  • What is Sentinel?

    Monitors Stacks contracts for calls, transfers and state changes, alerting by email, Slack or signed webhook. It is listed in the Atlas under Legal.

  • Who is Sentinel for?

    teams running Stacks contracts that want alerts on admin changes and large outflows

  • How much does Sentinel cost?

    Sentinel has a free plan; paid plans start at $19/mo, per its pricing page on 2026-10-29.

  • Is Sentinel free?

    Yes, Sentinel has a free plan, per its pricing page on 2026-10-29.

  • Do people use Sentinel?

    Widely used: 4.2k installs/mo (npm).

  • Is Sentinel still maintained?

    Actively maintained: release 4 days ago.

  • What are alternatives to Sentinel?

    In Legal, by use: Sentio, MyContractDecoder, Court Delta, Verifreta, Nomos.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk