base/pessimism
Detect real-time threats and events on OP Stack compatible blockchains observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 8
- Longevity 90
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 1261
- days_rel: n/a
- days_push: 826
- n_releases_24m: 0
Adoption not part of the score
1614 stars · 484 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Pessimism is a self-hosted monitoring service that continuously assesses OP Stack and EVM-compatible blockchains for real-time threats using user-defined heuristic rule sets. It was developed by Base as a public good but was deprecated in May 2024 and is no longer actively maintained.
Use cases
- monitor OP Stack chains for real-time security threats
- alert on suspicious on-chain events
- define custom heuristic rules for blockchain anomaly detection
- watch EVM chain activity for risk conditions
- set up automated threat detection for rollup infrastructure
When to choose
- studying blockchain threat monitoring architecture
- forking a heuristic-based chain monitoring service for your own needs
When to avoid
- you need actively maintained blockchain monitoring
- you want production-ready threat detection with support
- you monitor non-EVM chains
Facets
service · maturity abandoned
monitoring alerting blockchain blockchain monitoring security go self-hosted op-stack evm real-time-threat-detection heuristic-rules deprecated cryptocurrency linux docker
1 source
- readme: https://github.com/base/pessimism · fetched 2026-08-28 · 596f44c7e8f8
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| base/pessimism | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem