# RT-Thread/rt-thread — health index 93/100 (Exceptional)

> Inspection of the public repository RT-Thread/rt-thread by inspect.software. It holds a health index of 93 out of 100, placing it in the Exceptional band. The index is a signal derived from publicly visible practice, not a warranty, a security audit, or an endorsement, and it is independent of payment.

- Repository: https://github.com/RT-Thread/rt-thread
- Report page: https://inspect.software/software/RT-Thread/rt-thread
- Full JSON report: https://inspect.software/api/repositories/RT-Thread/rt-thread/report
- Badge: https://raw.githubusercontent.com/inspect-software/badges/main/v1/r/RT-Thread/rt-thread.svg
- Inspected: 2026-09-07
- Methodology: metrics 2.10.0, report schema 0.34.0 (https://inspect.software/methodology.md)

## Category summary

| Category | Weight | Index | Band |
|---|---|---|---|
| Vitality | 21% | 82/100 | Excellent |
| Community & Adoption | 17% | 96/100 | Exceptional |
| Sustainability & Governance | 23% | 79/100 | Good |
| Engineering Quality | 19% | 78/100 | Good |
| Security | 16% | 56/100 | Moderate |
| AI Readiness | 4% | 77/100 | Good |

The weighted overall 79 is calibrated to 93 on the published index scale (record calibration 2026-08-02).

## Repository facts

| Field | Value |
|---|---|
| Description | RT-Thread is an open source IoT Real-Time Operating System (RTOS).                                                                                                https://rt-thread.github.io/rt-thread/ |
| Homepage | https://www.rt-thread.io |
| Primary language | C |
| License | Apache-2.0 |
| Stars | 12,197 |
| Forks | 5,455 |
| Created | 2013-01-02 |
| Last push | 2026-09-07 |
| Latest release | v5.2.2 |
| Commits (last year) | 808 |
| Bus factor | 4 |
| Topics | embedded-systems, kernel, iot, rtos, arm, cortex-m, cortex-a, risc-v, mips, microcontroller, microkernel, real-time, aiot |

## Published packages

| Registry | Package | Latest | Monthly downloads |
|---|---|---|---|
| npm | hello | 0.6.2 | 616 |

## Vitality — 82/100 (Excellent)

Is the project alive — is code being written and are releases shipping? Weight: 21% of the overall index.

### Development activity — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Push recency | met | 36 / 36 | last push 0 days ago |
| Commit cadence | met | 36 / 36 | 52/52 weeks with commits |
| Commit volume | met | 18 / 18 | 808 commits in the last year |
| OpenSSF Scorecard: Maintained | met | 10 / 10 | 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10 |

### Release discipline — 56/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ships releases | met | 27 / 27 | 38 releases published |
| Release recency | partial | 16.2 / 36 | latest release 310 days ago |
| Release cadence | partial | 12.6 / 27 | a release every ~145.7 days |
| OpenSSF Scorecard: Signed-Releases | not met | 0 / 10 | Project has not signed or included provenance with any releases. |

### Abandonment — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Project is still maintained | met | 100 / 100 | last human commit 0 days ago |

## Community & Adoption — 96/100 (Exceptional)

Does the project have users, downloads, attention, and a welcoming setup for contributors? Weight: 17% of the overall index.

### Popularity & adoption — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Stars | met | 60 / 60 | 12,197 stars |
| Forks | met | 25 / 25 | 5,455 forks |
| Watchers | met | 15 / 15 | 516 watchers |

### Community health — 92/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 22.5 / 22.5 | — |
| License | met | 22.5 / 22.5 | recognized license (Apache-2.0) |
| CONTRIBUTING guide | met | 18 / 18 | — |
| Code of conduct | met | 13.5 / 13.5 | — |
| Issue template | not met | 0 / 7.2 | — |
| PR template | met | 6.3 / 6.3 | — |

## Sustainability & Governance — 79/100 (Good)

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep? Weight: 23% of the overall index.

### Maintainer resilience (bus factor) — 81/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Bus factor | partial | 43.2 / 54 | 4 contributor(s) cover half of all commits |
| Commit distribution | partial | 14.4 / 22.5 | top contributor authored 36% of commits |
| Contributor breadth | met | 13.5 / 13.5 | 100 contributors |
| OpenSSF Scorecard: Contributors | met | 10 / 10 | project has 19 contributing companies or organizations |

### Issue & PR responsiveness — 80/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Issue resolution | partial | 33.8 / 42 | 80% of issues closed |
| PR acceptance | partial | 23.2 / 30 | 7444/9642 decided PRs merged |
| Newcomer PR acceptance | partial | 7.8 / 13 | 3/5 first-time contributors' PRs merged in 30d |
| OpenSSF Scorecard: Code-Review | met | 15 / 15 | all changesets reviewed |

### Ownership & stewardship — 75/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ownership backing | met | 30 / 30 | organization-owned |
| Verified domain | not met | 0 / 20 | — |
| Owner reach | partial | 21.8 / 25 | 1,068 followers of RT-Thread |
| Track record | partial | 23.3 / 25 | 35 public repos, account ~14 yr old |

## Engineering Quality — 78/100 (Good)

Are baseline engineering and documentation practices in place? Weight: 19% of the overall index.

### Engineering practices — 64/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| CI workflows | met | 24 / 24 | 28 workflow(s) |
| Tests present | met | 24 / 24 | — |
| Linter config | not met | 0 / 16 | — |
| Pre-commit hooks | not met | 0 / 9.6 | — |
| .editorconfig | not met | 0 / 6.4 | — |
| OpenSSF Scorecard: CI-Tests | partial | 16 / 20 | 15 out of 17 merged PRs checked by a CI test -- score normalized to 8 |

### Documentation — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 30 / 30 | — |
| Documentation directory | met | 25 / 25 | — |
| Documentation / homepage site | met | 15 / 15 | https://www.rt-thread.io |
| Repository description | met | 10 / 10 | — |
| Topics | met | 10 / 10 | 13 topics |
| Wiki | met | 10 / 10 | — |

## Security — 56/100 (Moderate)

Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure? Weight: 16% of the overall index.

### Security posture — 45/100 (Weak)

Excluded from scoring (no data or not applicable): Branch-Protection, Packaging. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Binary-Artifacts | not met | 0 / 7.5 | binaries present in source code |
| Branch-Protection | excluded | 0 / 7.5 | internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md |
| CI-Tests | partial | 2 / 2.5 | 15 out of 17 merged PRs checked by a CI test -- score normalized to 8 |
| CII-Best-Practices | partial | 0.5 / 2.5 | badge detected: InProgress |
| Code-Review | met | 7.5 / 7.5 | all changesets reviewed |
| Contributors | met | 2.5 / 2.5 | project has 19 contributing companies or organizations |
| Dangerous-Workflow | met | 10 / 10 | no dangerous workflow patterns detected |
| Dependency-Update-Tool | not met | 0 / 7.5 | no update tool detected |
| Fuzzing | not met | 0 / 5 | project is not fuzzed |
| License | met | 2.5 / 2.5 | license file detected |
| Maintained | met | 7.5 / 7.5 | 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10 |
| Packaging | excluded | 0 / 5 | packaging workflow not detected |
| Pinned-Dependencies | not met | 0 / 5 | dependency not pinned by hash detected -- score normalized to 0 |
| SAST | not met | 0 / 5 | SAST tool is not run on all commits -- score normalized to 0 |
| Security-Policy | partial | 2 / 5 | security policy file detected |
| Signed-Releases | not met | 0 / 7.5 | Project has not signed or included provenance with any releases. |
| Token-Permissions | not met | 0 / 7.5 | detected GitHub workflow tokens with excessive permissions |
| Vulnerabilities | met | 7.5 / 7.5 | 0 existing vulnerabilities detected |

### Dependency advisories — 100/100 (Exceptional)

Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the npm:hello@0.6.2 runtime dependency closure — what installing the published package pulls in — 25 packages. Reachability is not analyzed.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Direct dependencies free of known advisories | met | 35 / 35 | no direct dependency carries a known advisory |
| Indirect dependencies free of known advisories | met | 25 / 25 | no indirect dependency carries a known advisory |
| No advisories left outstanding | excluded | 0 / 40 | no advisory carries a publication date |

### Malicious dependencies — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| No dependency reported as a malicious package | met | 100 / 100 | no dependency is reported as a malicious package |

### High-Risk Jurisdiction Exposure — 100/100 (Exceptional)

Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Policy exposure multiplier | met | 100 / 100 | no confirmed policy-scope location match |

## AI Readiness — 77/100 (Good)

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight: agent tooling is a real maintenance signal, but its absence must never gate the top of the scale (calibration saturates at raw 91, so 100/100 remains reachable with AI Readiness at zero).

### Agent context & guidance — 76/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Agent instructions | met | 45 / 45 | .github/copilot-instructions.md, AGENTS.md, documentation/6.components/device-driver/scmi/agent.md |
| Machine-readable docs (llms.txt) | not met | 0 / 15 | — |
| Legible commit history | partial | 30.9 / 40 | 58 of 100 human commits state their intent (structured subject or explanatory body) |

### Verify loop (build / test / typecheck) — 61/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| One-command bootstrap | met | 18 / 18 | bsp/Infineon/psoc6-pioneerkit_modus/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ccmu/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ccmu/sunxi-ng/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ccmu/sunxi/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ccmu/sunxi/sun8iw19p1/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ce/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/cir/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/common/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/disp2/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/disp2/disp/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/disp2/disp/de/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/disp2/disp/de/lowlevel_v2x/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/disp2/soc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/dma/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/efuse/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/eise/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/g2d_rcq/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gmac/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gpadc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gpio/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gpio/sun50iw11/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gpio/sun8iw18/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gpio/sun8iw19/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/gpio/sun8iw20/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/hwspinlock/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/intc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ir/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/ledc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/lradc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/mbus/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/msgbox/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/msgbox/msgbox_amp/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/msgbox/msgbox_sx/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/phy/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/prcm/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/prcm/prcm-sun50iw11/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/pwm/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/regulator/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/rtc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sdmmc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sdmmc/osal/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sdmmc/osal/os/FreeRTOS/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sdmmc/osal/os/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sdmmc/osal/os/RT-Thread/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/codecs/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/component/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/component/aw-alsa-lib/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/component/aw-alsa-utils/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/core/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/sound/platform/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/spi/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/spinor/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/thermal/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/timer/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/tpadc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/twi/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/uart/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/core/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/hid/Class/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/hid/Client/KeyBoard/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/hid/Client/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/hid/Client/Mouse/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/hid/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/host/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/include/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/manager/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/platform/sun20iw1/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/platform/sun8iw18/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/platform/sun8iw19/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/storage/Class/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/storage/Disk/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/storage/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/storage/Misc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/udc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/uvc/Class/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/uvc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/uvc/Misc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/uvc/Webcam/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/usb/uvc/drv_webcam/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/source/watchdog/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/ccmu/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/cir/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/disp2/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/dma/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/gpadc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/gpio/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/hwspinlock/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/ir/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/lradc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/msgbox/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/pwm/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/rtc/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/spi/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/spinor/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/thermal/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/timer/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/twi/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/uart/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/usb/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/usb/host/Makefile, bsp/allwinner/libraries/sunxi-hal/hal/test/usb/udc/Makefile, bsp/allwinner/libraries/sunxi-hal/osal/Makefile, bsp/allwinner/libraries/sunxi-hal/osal/src/Makefile, bsp/hifive1/Makefile, bsp/microchip/samd51-adafruit-metro-m4/bsp/armcc/Makefile, bsp/microchip/samd51-adafruit-metro-m4/bsp/gcc/Makefile, bsp/microchip/samd51-seeed-wio-terminal/bsp/armcc/Makefile, bsp/microchip/samd51-seeed-wio-terminal/bsp/gcc/Makefile, bsp/mm32/mm32f526x/Makefile, bsp/msp432e401y-LaunchPad/libraries/msp432e4/driverlib/lib/ccs/m4f/makefile, bsp/msp432e401y-LaunchPad/libraries/msp432e4/driverlib/lib/gcc/m4f/makefile, bsp/msp432e401y-LaunchPad/libraries/msp432e4/driverlib/lib/iar/m4f/makefile, bsp/nuvoton/numaker-hmi-ma35d1/preload/Makefile, bsp/nxp/imx/imx6ul/Makefile, bsp/nxp/imx/imx91/Makefile, bsp/phytium/aarch32/makefile, bsp/phytium/aarch64/makefile, bsp/sparkfun-redv/Makefile, components/net/lwip/lwip-2.0.3/test/fuzz/Makefile, components/net/lwip/lwip-2.1.2/test/fuzz/Makefile |
| Automated tests | met | 22 / 22 | — |
| Lint / format config | not met | 0 / 11 | — |
| Static type checking | met | 11 / 11 | C (statically typed) |
| Reproducible environment | met | 10 / 10 | devcontainer, Dockerfile |
| Demonstrated agent practice | not met | 0 / 10 | no agent-authored commits among the last 100 |
| Automated maintenance | not met | 0 / 8 | no automated dependency updates observed |
| OpenSSF Scorecard: Pinned-Dependencies | not met | 0 / 10 | dependency not pinned by hash detected -- score normalized to 0 |

### Code legibility for models — 96/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Type-checkable code | met | 45 / 45 | C (statically typed) |
| Manageable file sizes | partial | 51.4 / 55 | 1516/23093 source files over 60KB |

### Machine-readable interfaces — 100/100 (Exceptional)

Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| API schema (OpenAPI/GraphQL/proto) | excluded | 0 / 40 | not applicable to this kind of software |
| MCP server | excluded | 0 / 20 | not applicable to this kind of software |
| Runnable examples | met | 40 / 40 | example, examples, sample, samples |

## Collection warnings

- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
- First-time contributor figures cover 12 of 18 authors (cap 12)
- npm package 'hello' points at a different repository (https://github.com/hello-js/hello); excluded from ecosystem scoring

## What this report is

inspect.software measures public repositories against a single published, versioned methodology and reports the result as a 1–100 health index. Findings are signals derived from what is visible in public repository data — they are not a security audit, a warranty, or an endorsement, and no result depends on payment.

- Methodology, formulas and weights: https://inspect.software/methodology.md
- What a result does and does not claim: https://inspect.software/wiki/signals-not-warranties.md
- Rating bands: https://inspect.software/wiki/scoring-bands.md
- Corrections: https://inspect.software/contact.md
- Index of all documents: https://inspect.software/llms.txt