Crates / extism-pdk
Rust crate · real downloads · data Oct 27, 2026
extism-pdk downloads, and should you depend on it?
Extism Plug-in Development Kit (PDK) for Rust crates.io · docs.rs · repository
Few direct dependents and gaining.
extism-pdk: only 27 crates name it directly; no release in the last 90 days, so its count is all steady use.
How this verdict is decided (4 rules)
- Usage: crates.io reverse dependencies (crates that list it as a dependency): 10,000+ = foundational, 1,000+ = widely used, 100+ = established, under 100 = few direct dependents.
- Direction: the median quiet day in the last 30 days of the window against the first 30, read against the median tracked crate (the whole field moved +39% from late summer to October, so a raw trend says nothing). 10%+ ahead of the field = gaining; 10%+ behind = losing ground; otherwise steady. Steady with no release in 2+ years = quiet for years.
- Release spikes: the median release-window day against the quiet-day baseline: under 1.15x = no spike, 1.15x to 1.3x = small bumps, 1.3x or more = jumps on release days.
- Release recency: days since the newest version that was not yanked, from crates.io publish times.
release window (release day + next day)quiet dayquiet-day median · download the 89 days as CSV
The numbers in one paragraphextism-pdk got 126,189 crates.io downloads from Jul 30, 2026 to Oct 26, 2026 with no new version in that window, so every day is a quiet day: a median of 1,298 a day, about 9,086 a week. With no release spikes to remove, its whole count is the steady baseline.
What this means if you're choosing a dependency
- You rarely add this one yourself. Only 27 crates name it directly.
- No release in over a year (last: 1.4.1, May 19, 2025). Fine for a finished crate; check open issues and the latest commit before relying on it.
- Fit check: license BSD-3-Clause, edition 2021 (from the latest version's manifest).
- Its raw count is a fair read. Under 1% of its downloads in the window came from release windows, so the raw number and the baseline (1,298 a day) tell the same story.
What the chart says
- Weekend quiet days ran at 87% of weekday quiet days (1,186 vs 1,371). That is a shallow weekend dip, typical of always-on mirrors, scheduled jobs and dependency bots.
- Biggest day: 3,274 on Aug 18, 2026, a quiet day with no release nearby.
Every number
| All-time downloads | 495,713 (outside the crates.io top 1,000 by all-time downloads) |
| Downloads in the window | 126,189 (Jul 30, 2026 to Oct 26, 2026, 89 days) |
| Within 2 days of a release | 0 (0.0%) |
| Quiet-day median (baseline) | 1,298 a day; weekdays 1,371, weekends 1,186 |
| Release-adjusted downloads | 126,189 (release-window days capped at the baseline) |
| Baseline rank | #1260 of the 1329 crates we track |
| Quiet-day trend | +54% raw, +11% against the median tracked crate (+39%) |
| Releases in the window | 0 |
| Versions published, ever | 22 |
| Latest version | 1.4.1, published May 19, 2025 (license BSD-3-Clause, edition 2021) |
| First published | Aug 25, 2022 |
| Reverse dependencies | 27 |
How we compute this
crates.io counts every download, including CI runners, mirrors and bots that fetch each new version, so raw counts run high (why, in The Manual). We split the last 89 days into release windows (the day a version of extism-pdk was published, plus the next day) and quiet days, and use the median quiet day as the baseline: an upper bound on steady use, never a head count. The method and data come from our study of 90 days of crates.io data from 69 crates, featured in This Week in Rust #674; check any crate live with the real-downloads checker.
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Categories
Sources
- Daily downloads: crates.io API, /crates/extism-pdk/downloads (last 90 days, all versions), fetched Oct 27, 2026.
- Versions and publish times: crates.io API, /crates/extism-pdk/versions, same fetch.
- Reverse dependencies: crates.io reverse dependencies, same fetch. Dependency edges between tracked crates: each crate's default version, crates.io API.
- Fetched politely (one request every 2 seconds, identified User-Agent) per the crates.io data access policy. Data is crates.io's; the release-window split, baseline and verdict rules are ours, CC BY 4.0.
Up next
Next by real downloads: The next crate down the real-downloads ranking: 1,275 a day. Few direct dependents and gaining.openai-api-rsRust crate. OpenAI API client library for Rust (unofficial). Real use: 1.3K downloads a day on quiet days; 33 crates depend on it.Read it next →Also worth your time
Art: Nicholas Roerich, Nag Lake (1925). Public domain, via Wikimedia Commons.
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