Is Fastjson Safe?
Fastjson — Nerq Trust Score 33.8/100 (F grade). Based on analysis of 2 trust dimensions, it is has significant safety risks. Last updated: 2026-03-31.
Exercise caution with Fastjson. Fastjson is a Rust crate with a Nerq Trust Score of 33.8/100 (F), based on 3 independent data dimensions. It is below the recommended threshold of 70. Security: 65/100. Popularity: 35/100. Data sourced from crates.io registry, GitHub, NVD, and RustSec advisory database. Last updated: 2026-03-31. Machine-readable data (JSON).
Is Fastjson safe?
NO — USE WITH CAUTION — Fastjson has a Nerq Trust Score of 33.8/100 (F). It has below-average trust signals with significant gaps in security, maintenance, or documentation. Not recommended for production use without thorough manual review and additional security measures.
What is Fastjson's trust score?
Fastjson has a Nerq Trust Score of 33.8/100, earning a F grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Fastjson?
Fastjson's strongest signal is security at 65/100. No known vulnerabilities have been detected. It has not yet reached the Nerq Verified threshold of 70+.
What is Fastjson and who maintains it?
| Author | Unknown |
| Category | crates |
| Source | N/A |
Fastjson Across Platforms
Same developer/company in other registries:
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Safety Guide: Fastjson
What is Fastjson?
Fastjson is a Rust crate — A fast Json parser.
How to Verify Safety
Run cargo audit. Review on crates.io for activity.
You can also check the trust score via API: GET /v1/preflight?target=fastjson
Key Safety Concerns for Rust crates
When evaluating any Rust crate, watch for: dependency vulnerabilities, unsafe code, maintenance status.
Trust Assessment
Fastjson has a Nerq Trust Score of 34/100 (F) and has not yet reached Nerq trust threshold (70+). This score is based on automated analysis of security, maintenance, community, and quality signals.
Key Takeaways
- Fastjson has a Trust Score of 34/100 (F).
- Review carefully before use — below trust threshold.
- Always verify independently using the Nerq API.
Frequently Asked Questions
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Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.