Rate My GitHub

Profiles, repos, scores & roasts

← Rate my GitHub
nikomatsakis GitHub avatar

#36 · Top 96.7%

nikomatsakis

Niko Matsakis

B

Solid engineer

bronze medal

Overall

0.0

/ 100

Roasts

Category breakdown

nikomatsakis category score radarImpactConsistencyQualityDepthBreadthCommunity

Impact

25% weight

82A

Project names and descriptions indicate distinctive work around Rust education, borrow checking, language design, and developer tools. The portfolio suggests ambitious and coherent contributions, though implementation impact cannot be fully

Consistency

15% weight

78B

The profile shows long-term activity since 2009 and several repositories updated in 2024–2026, alongside older substantial work. The supplied snapshot does not establish continuity between updates.

Quality

25% weight

70B

Non-fork repositories, substantial repository ages, and activity across focused Rust and language-design projects provide positive maturity signals. The supplied metadata offers limited support for judging overall quality, so this score is

Depth

20% weight

79B

The portfolio includes long-lived repositories and technically substantial themes such as borrow checking and non-lexical lifetimes, plus newer Rust projects. The available metadata supports sustained ownership and scope, but not detailed

Breadth

10% weight

64C

The listed work spans Rust, TypeScript, JavaScript, HTML, educational material, RFC/design writing, UI, and developer-oriented projects. Rust is the clear center of gravity rather than one of many equally represented ecosystems.

Community

5% weight

58D

The profile has substantial followers and several repositories with notable stars, offering a modest positive signal of community reach. Popularity is treated only as a tie-breaker and does not determine the other scores.

Stats

52-week commit heatmap

309 active days

Language distribution

  • Rust50%
  • Unknown25%
  • HTML9%
  • JavaScript8%
  • TypeScript8%

Based on the bounded repository sample saved with this analysis.

Numbers

Owned repos

Non-fork sample

10

Commits

Last 12 months

5163

Followers

Accepted fact

4540

Joined GitHub

Profile date

Nov 2009

Top repos

Scores marked Profile rating use bounded public repository metadata. Full repo analysis appears only when a separate accepted repository analysis exists.

Timeline

  1. Joined GitHub
  2. Created nikomatsakis/babysteps - Babysteps blog
  3. Created nikomatsakis/borrowck - Modeling NLL and the Rust borrowck
  4. Created nikomatsakis/nll-rfc - Non-lexical lifetimes RFC.
  5. Created nikomatsakis/skill-tree - Skill-tree rendering
  6. Created nikomatsakis/moro - Experiments with structured concurrency in Rust
  7. Created nikomatsakis/how-to-rust - A collection of blog posts and links that talk about how to successfully use Rust.
  8. Created nikomatsakis/rust-design-axioms - Discovering and describing Rust's design axioms
  9. Created nikomatsakis/mynah-ui - The chat interface of Amazon Q Developer (for IDEs)
  10. Created nikomatsakis/zulook
  11. Created nikomatsakis/sage-dev - SAGE (Symposium AGentic development Experiment)
  12. Created nikomatsakis/rcn-july-2026 - Battery Packs and the Maybe Mucho Std
  13. Created nikomatsakis/blessed-rs - A community guide to the Rust ecosystem
  14. Most recent push to nikomatsakis/sage-dev

Compare

NIKOMATSAKIS · 6DMEDIAN CODER

NIKOMATSAKIS compared with MEDIAN CODER across six rating categoriesImpactConsistencyQualityDepthBreadthCommunity

Rubric

How this score was produced

Overall = Σ(category × weight) + deterministic top-end curve

CategoryWeightScoreContribution
Impact25%8220.50
Quality25%7017.50
Depth20%7915.80
Consistency15%7811.70
Breadth10%646.40
Community5%582.90
Impact · 82/100

What it measures. Project usefulness, ambition, originality, and coherence. Popularity is not impact.

Evidence for nikomatsakis. Project names and descriptions indicate distinctive work around Rust education, borrow checking, language design, and developer tools. The portfolio suggests ambitious and coherent contributions, though implementation impact cannot be fully

Quality · 70/100

What it measures. Engineering and project-maturity signals supported by the available public metadata.

Evidence for nikomatsakis. Non-fork repositories, substantial repository ages, and activity across focused Rust and language-design projects provide positive maturity signals. The supplied metadata offers limited support for judging overall quality, so this score is

Depth · 79/100

What it measures. Sustained ownership, meaningful scope, and continued maintenance rather than one-shots.

Evidence for nikomatsakis. The portfolio includes long-lived repositories and technically substantial themes such as borrow checking and non-lexical lifetimes, plus newer Rust projects. The available metadata supports sustained ownership and scope, but not detailed

Consistency · 78/100

What it measures. Recency and contribution patterns across the supplied activity window.

Evidence for nikomatsakis. The profile shows long-term activity since 2009 and several repositories updated in 2024–2026, alongside older substantial work. The supplied snapshot does not establish continuity between updates.

Breadth · 64/100

What it measures. Language entropy and project-type diversity across owned repos.

Evidence for nikomatsakis. The listed work spans Rust, TypeScript, JavaScript, HTML, educational material, RFC/design writing, UI, and developer-oriented projects. Rust is the clear center of gravity rather than one of many equally represented ecosystems.

Community · 58/100

What it measures. A weak positive tie-breaker for supplied community signals, never a popularity penalty.

Evidence for nikomatsakis. The profile has substantial followers and several repositories with notable stars, offering a modest positive signal of community reach. Popularity is treated only as a tie-breaker and does not determine the other scores.

Raw total
74.80
Top-end curve
+0.00
Final overall
74.8

Tier thresholds

S 90-100 Mass-producing humansA 80-89 Ship machineB 70-79 Solid engineerC 60-69 Getting thereD 40-59 README enthusiastF 0-39 GitHub tourist

I. How this saved profile rating was produced

  1. 01

    Validate. The server validates the login, signed browser session, attempts, cooldown, daily ceiling, and the single provider permit.

  2. 02

    Collect. The VPS collector reads bounded public profile metadata and up to 12 recent repository metadata rows in volatile memory.

  3. 03

    Rate. One pinned provider returned a closed profile-rating object with no tools, browsing, shell, or repository-content access.

  4. 04

    Verify. Server checks bound the subject, rejected unsafe or echoed text, validated the schema, and recomputed rubric-v3 final arithmetic.

  5. 05

    Save. Only a valid completion and allowlisted post-completion facts commit atomically; the public projection is then rebuilt.

This saved profile analysis is metadata-only and did not read repository trees, README files, or source code. Availability of new analysis is separate from this historical result.

Rated 2026-08-10 · rating-rubric/3

II. Data sources & caveats
  • Scores summarize one accepted, subject-bound analysis; they are not a security audit or endorsement.
  • Rank, percentile, and median use 1095 currently accepted public profiles and can change as the leaderboard changes.
  • Repository and language details reflect the bounded analyzed sample, not necessarily every repository.
  • Missing data is shown as unavailable or not evaluated instead of being inferred as zero.
  • Analysis completed Aug 10, 2026, 12:53 AM UTC and is marked aging.