# Validator Performance Tracker (`gochujang/validator-performance-tracker`) Actor

Track blockchain validator and staking node performance across Ethereum (Beacon Chain) and Cosmos. Monitor attestation effectiveness, missed proposals, APR estimates, and network health. No API key required.

- **URL**: https://apify.com/gochujang/validator-performance-tracker.md
- **Developed by:** [Hojun Lee](https://apify.com/gochujang) (community)
- **Categories:** Business
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $3.00 / 1,000 validator trackeds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Validator Performance Tracker

Track blockchain validator and staking-node performance across **Ethereum**, **Solana**, and **Cosmos** — all from free, public APIs. No API key required.

### What it does

For each validator, this Actor fetches live on-chain data and computes performance metrics that matter to stakers, node operators, and DeFi researchers:

| Chain | Data Source |
|-------|------------|
| Ethereum (Beacon Chain) | [beaconcha.in](https://beaconcha.in) public API |
| Solana | Public mainnet-beta JSON-RPC |
| Cosmos Hub | cosmos-rest.publicnode.com |

***

### Output fields

#### Ethereum validators

| Field | Description |
|-------|-------------|
| `index_or_address` | Validator index (integer) |
| `moniker_or_pubkey` | BLS public key |
| `status` | `active`, `pending`, `exited`, etc. |
| `balance_eth` | Current balance in ETH |
| `effective_balance_eth` | Effective balance (used for rewards) |
| `attestation_effectiveness_pct` | Percentage of duties attested (0–100) |
| `missed_attestations_7d` | Missed attestation duties in the last 7 days |
| `missed_proposals_7d` | Missed block proposals in the last 7 days |
| `apr_estimate_pct` | Estimated annual staking APR |
| `performance_tier` | `excellent` (≥99%) / `good` (≥97%) / `average` (≥95%) / `poor` (<95%) |

#### Cosmos validators

| Field | Description |
|-------|-------------|
| `index_or_address` | Operator address (bech32) |
| `moniker_or_pubkey` | Validator name |
| `voting_power_pct` | Share of total bonded stake |
| `commission_rate_pct` | Commission charged to delegators |
| `min_self_delegation` | Minimum self-delegation in uATOM |
| `is_jailed` | Whether the validator is currently jailed |
| `uptime_score` | 1.0 if active, 0.0 if jailed |
| `delegator_tier` | `whale_magnet` / `popular` / `mid` / `small` |

#### Solana validators

| Field | Description |
|-------|-------------|
| `index_or_address` | Vote account public key |
| `moniker_or_pubkey` | Node public key |
| `voting_power_pct` | Share of total active stake |
| `commission_rate_pct` | Commission percentage |
| `attestation_effectiveness_pct` | Epoch credits ratio vs maximum credits |
| `is_jailed` | Whether the vote account is delinquent |
| `uptime_score` | 1.0 if current, 0.0 if delinquent |

#### Cross-chain summary (key-value store `SUMMARY`)

```json
{
  "total_validators_tracked": 40,
  "by_chain": { "ethereum": 20, "cosmos": 20, "solana": 0 },
  "avg_attestation_effectiveness_pct": 98.7,
  "network_health_score": 97.5,
  "fetched_at": "2026-09-02T10:00:00+00:00"
}
```

***

### Input

```json
{
  "includeEthereum": true,
  "ethereumValidatorIndices": ["1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20"],
  "includeSolana": false,
  "solanaTopN": 20,
  "includeCosmos": true,
  "cosmosTopN": 20
}
```

**Default run**: Top 20 Ethereum validators by index + Top 20 Cosmos validators by voting power.

***

### Pricing (Pay-Per-Event)

| Event | Price |
|-------|-------|
| Actor start | $0.001 |
| Per validator tracked | $0.003 |

A default run tracking 40 validators costs approximately **$0.12**.

***

### Use cases

- **Staking dashboards**: Monitor your validators' health at a glance
- **Slashing risk alerts**: Catch declining attestation effectiveness before a penalty
- **Decentralisation research**: Analyse voting power distribution across the Cosmos ecosystem
- **Yield optimisation**: Compare APR estimates and commission rates across validators

***

### Notes

- No API key or proxy is required — all data sources are freely accessible
- beaconcha.in has a public rate limit; the Actor batches requests and adds polite delays
- Cosmos pagination is handled automatically — the Actor fetches all bonded validators before selecting the top N
- Solana delinquent validators are included and flagged with `is_jailed: true`

***

### Related actors

- [ETH Validator Tracker](https://apify.com/gochujang/eth-validator-tracker) — Deep Ethereum beacon chain metrics including attestation history and inclusion distance
- [LST Health Tracker](https://apify.com/gochujang/lst-health-tracker) — Liquid staking token health (stETH, rETH, cbETH peg + exchange rate)
- [EigenLayer Restaking Tracker](https://apify.com/gochujang/eigenlayer-restaking-tracker) — Restaking operator performance and AVS delegation data on EigenLayer

### Feedback

If this actor helps your staking research, a review helps others find it: [Leave a review on Apify Store](https://apify.com/gochujang/validator-performance-tracker#reviews)

***

**Keywords:** blockchain validator performance, Ethereum validator tracker, Cosmos validator monitoring, staking APR calculator, attestation effectiveness, missed proposals tracker, beacon chain analytics, validator uptime monitoring, staking node performance, crypto staking rewards, validator metrics API, ETH staking data scraper, Cosmos staking analytics, no API key required

# Actor input Schema

## `includeEthereum` (type: `boolean`):

Fetch Ethereum Beacon Chain validator data from beaconcha.in (no API key required)

## `ethereumValidatorIndices` (type: `array`):

Validator indices or pubkeys to track. Leave empty to use top validators by index (1–20).

## `includeSolana` (type: `boolean`):

Fetch Solana vote account data from the public RPC endpoint

## `solanaTopN` (type: `integer`):

How many top Solana validators to include (sorted by activated stake)

## `includeCosmos` (type: `boolean`):

Fetch Cosmos Hub bonded validator data from the public REST node

## `cosmosTopN` (type: `integer`):

How many top Cosmos validators to include (sorted by tokens)

## Actor input object example

```json
{
  "includeEthereum": true,
  "ethereumValidatorIndices": [
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "10",
    "11",
    "12",
    "13",
    "14",
    "15",
    "16",
    "17",
    "18",
    "19",
    "20"
  ],
  "includeSolana": false,
  "solanaTopN": 20,
  "includeCosmos": true,
  "cosmosTopN": 20
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "ethereumValidatorIndices": [
        "1",
        "2",
        "3",
        "4",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("gochujang/validator-performance-tracker").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "ethereumValidatorIndices": [
        "1",
        "2",
        "3",
        "4",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("gochujang/validator-performance-tracker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "ethereumValidatorIndices": [
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "10",
    "11",
    "12",
    "13",
    "14",
    "15",
    "16",
    "17",
    "18",
    "19",
    "20"
  ]
}' |
apify call gochujang/validator-performance-tracker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,gochujang/validator-performance-tracker"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/txDQWC5eu90c2e8TL/builds/NCTPj0hYsWpywJi3H/openapi.json