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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Monitoring & observability

EPA EJScreen

Environmental justice screening indicators, pollution burden, and demographic vulnerability

Checks passed
10 / 22

4 failed · 8 not measured

Median response
533 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
5

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
220
Publisher identityCan the publisher be traced to its source?
222

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 533 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name epa-ejscreen.

  • Pass
    Lists tools

    tools/list returned 5 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 533 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 533 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    0 of 15 parameters have a description (0%). The bar is 80%.

  • Fail
    Safety hints

    5 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Fail
    Recently updated

    Updated 2026-04-02T02:26:43.518665Z, which is older than 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using EPA EJScreen

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

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

Capabilities

Tools 5

get_demographic_indicators

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).

Discovered
get_ej_county_summary

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).

Discovered
get_ej_data_by_location

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).

Discovered
get_ej_state_summary

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).

Discovered
get_environmental_indicators

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).

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected533 ms5