Real-time Slack alerts on release publish - #173
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Fire a Slack notification inline from the publish CLI, the moment latest.json goes live, instead of polling for new releases. The alert goes to a per-country channel via an incoming webhook (SLACK_WEBHOOK_POPULACE_US / _UK) and is a no-op unless that env var is set. A failed post is logged, never raised, so a Slack hiccup can never fail an otherwise-successful publish. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
PavelMakarchuk
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Jun 23, 2026
Release alerts now fire in real time from the Populace publish pipeline (PolicyEngine/microcosm#173), the moment latest.json goes live. The polling cron was a fragile fallback that could double-post, so drop it: the cron route, its Slack/KV helpers, and the crons block in vercel.json. Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Sends a Slack notification the moment a Populace release is published, instead of relying on a polling cron job.
The alert fires inline from
populace-publish-release(the publish CLI) right afterlatest.jsonis uploaded — so it's truly event-driven, real-time, and runs wherever the publish runs.How it works
populace.data.slack.notify_release(...)posts to a per-country Slack incoming webhook.populace-uk*→ UK, everything else → US.SLACK_WEBHOOK_POPULACE_USSLACK_WEBHOOK_POPULACE_UK::warning::) but never raised, so a Slack outage can't fail an otherwise-successful publish.urllib) — no new dependencies.Setup (to activate)
Create an incoming webhook for each channel (
#populace-us,#populace-uk) and setSLACK_WEBHOOK_POPULACE_US/SLACK_WEBHOOK_POPULACE_UKin whatever environment runspopulace-publish-release. Until then it's a silent no-op.Tests
tests/test_slack.py— country inference, no-op without webhook, posts to the country webhook, and never raises on post failure. All passing locally alongsidetest_release.py.🤖 Generated with Claude Code