# EPA EJScreen (remote · mcp.olyport.com)

Environmental justice screening indicators, pollution burden, and demographic vulnerability

- Trust score: 64/100 (medium)
- Change this week: +6
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.olyport.com`: 64/100 (this document), [markdown](https://verifymcp.io/servers/com-olyport-ejscreen/ejscreen-mcp.md), [page](https://verifymcp.io/servers/com-olyport-ejscreen/ejscreen-mcp)

## Channel facts

- Endpoint: `https://mcp.olyport.com/ejscreen/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 5 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 792 tokens (~158/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http com-olyport-ejscreen https://mcp.olyport.com/ejscreen/mcp
```

### Codex

```toml
[mcp_servers.com-olyport-ejscreen]
url = "https://mcp.olyport.com/ejscreen/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-olyport-ejscreen": {
      "type": "remote",
      "url": "https://mcp.olyport.com/ejscreen/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-olyport-ejscreen --url https://mcp.olyport.com/ejscreen/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-olyport-ejscreen:
    url: "https://mcp.olyport.com/ejscreen/mcp"
```

### Other

```json
{
  "mcpServers": {
    "com-olyport-ejscreen": {
      "type": "http",
      "url": "https://mcp.olyport.com/ejscreen/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 63, +3)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 60, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 58, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 58)

First indexed and scored.

## MCP tools (5)

### `get_ej_data_by_location` (~134 tokens)

Get EJScreen environmental justice data for a specific location.

    Uses the EPA EJScreen REST broker to retrieve EJ screening indicators
    for a point location with a buffer distance. Returns environmental
    indicators, demographic data, and EJ indexes.

    Args:
        latitude: Latitude of the location (e.g. 47.61).
        longitude: Longitude of the location (e.g. -122.33).
        distance: Buffer distance in miles around the point (default 1.0).

Input parameters:

- `distance` (number)
- `latitude` (number, required)
- `longitude` (number, required)

Output parameters:

- `result` (string)

### `get_ej_county_summary` (~174 tokens)

Get EJ indicators for census block groups in a county.

    Returns EJScreen environmental justice data for block groups within
    the specified county, sorted by highest overall environmental burden.
    Includes environmental indicators, demographic data, and EJ indexes.

    Args:
        state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
        county_fips: County FIPS code, either 5-digit full (e.g. '53033')
                     or 3-digit county portion (e.g. '033'). If 3 digits,
                     state FIPS is prepended automatically.
        limit: Maximum number of block groups to return (default 50, max 500).

Input parameters:

- `county_fips` (string, required)
- `limit` (integer)
- `state` (string, required)

Output parameters:

- `result` (string)

### `get_ej_state_summary` (~113 tokens)

Get a state-level overview of EJ indicators across block groups.

    Returns the most environmentally burdened block groups in the state,
    sorted by PM2.5 percentile. Useful for identifying areas with the
    highest environmental justice concerns.

    Args:
        state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
        limit: Maximum number of block groups to return (default 100, max 500).

Input parameters:

- `limit` (integer)
- `state` (string, required)

Output parameters:

- `result` (string)

### `get_demographic_indicators` (~159 tokens)

Get demographic vulnerability indicators by block group.

    Returns demographic data including minority percentage, low income
    percentage, linguistic isolation, education levels, and age
    distributions. These are the demographic components used in
    EJScreen's EJ index calculations.

    Args:
        state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
        county_fips: Optional county FIPS code (3-digit or 5-digit).
                     If omitted, returns state-level results sorted by
                     highest demographic index.
        limit: Maximum number of block groups to return (default 50, max 500).

Input parameters:

- `county_fips` (string)
- `limit` (integer)
- `state` (string, required)

Output parameters:

- `result` (string)

### `get_environmental_indicators` (~212 tokens)

Get specific environmental indicators by block group.

    Returns environmental indicator values and state percentiles for
    block groups. Can filter to a specific indicator type or return all.

    Args:
        state: Two-letter US state abbreviation (e.g. 'WA', 'CA').
        county_fips: Optional county FIPS code (3-digit or 5-digit).
                     If omitted, returns state-level results.
        indicator: Optional specific indicator to focus on. Options:
                   'pm25', 'ozone', 'diesel', 'cancer', 'respiratory',
                   'traffic', 'lead', 'superfund', 'hazwaste',
                   'wastewater', 'rmp', 'ust'. If omitted, returns all.
        limit: Maximum number of block groups to return (default 50, max 500).

Input parameters:

- `county_fips` (string)
- `indicator` (string)
- `limit` (integer)
- `state` (string, required)

Output parameters:

- `result` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-olyport-ejscreen/ejscreen-mcp#diagnostics

## Score history

- 2026-08-03: 64
- 2026-08-02: 64
- 2026-08-01: 63
- 2026-07-31: 63
- 2026-07-30: 60
- 2026-07-29: 60
- 2026-07-28: 59
- 2026-07-27: 58
- 2026-07-26: 58

## Links

- Remote endpoint: https://mcp.olyport.com/ejscreen/mcp
- Website: https://olyport.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-olyport-ejscreen/ejscreen-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-olyport-ejscreen/ejscreen-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/com-olyport-ejscreen/ejscreen-mcp