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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 · Data access / search

CDC Mortality (WONDER)

Leading causes of death, mortality rates, infant mortality, and drug overdose data

Checks passed
10 / 22

4 failed · 8 not measured

Median response
532 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 532 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name cdc-wonder.

  • 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 532 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 532 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 13 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 2026-04-02T02:26:39.333882Z, which is older than 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using CDC Mortality (WONDER)

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 cdc-mortality-wonder https://mcp.olyport.com/cdc-wonder/mcp

Capabilities

Tools 5

get_drug_overdose_deaths

Get provisional drug overdose death data by state. Returns provisional counts and rates of drug overdose deaths from the National Vital Statistics System (NVSS). Includes data on opioid, synthetic opioid, and other drug-involved deaths. Updated monthly. Args: state: Filter by state name (e.g. 'West Virginia', 'Ohio'). Case-insensitive. Returns all states if not specified. year: Filter by year. Returns all available years if not specified. limit: Maximum number of records to return (default 25, max 1000).

Discovered
get_infant_mortality

Get infant mortality rates by state and race/ethnicity. Returns infant mortality data including rates per 1,000 live births, broken down by state and race/ethnicity. Infant mortality is a key indicator of community health status used in CHNAs. Args: state: Filter by state name (e.g. 'Ohio', 'Georgia'). Case-insensitive. Returns all states if not specified. year: Filter by year. Returns all available years if not specified.

Discovered
get_leading_causes_of_death

Get leading causes of death with death counts and age-adjusted rates. Returns data from the NCHS Leading Causes of Death dataset, which provides national and state-level mortality statistics by cause of death, year, and age-adjusted death rate per 100,000 population. Data spans 1999-2017. Args: state: Filter by state name (e.g. 'California', 'Texas'). Case-insensitive. Returns all states if not specified. year: Filter by year (e.g. 2017). Returns all available years if not specified. limit: Maximum number of records to return (default 25, max 1000).

Discovered
get_mortality_by_state

Compare mortality rates across states for a specific cause or all causes. Returns age-adjusted death rates by state, useful for comparing mortality burdens across geographies. Data from NCHS Leading Causes of Death. Args: cause: Cause of death to filter by (e.g. 'Heart disease', 'Cancer', 'Unintentional injuries', 'Alzheimer\'s disease'). Partial match supported. Returns all causes if not specified. year: Filter by year (e.g. 2017). Defaults to most recent available year if not specified.

Discovered
get_provisional_mortality

Get most recent provisional mortality data including COVID and other causes. Returns provisional death counts from the NVSS, covering major cause groups including COVID-19, respiratory diseases, circulatory diseases, and more. Data is updated weekly and covers the most recent periods. Args: state: Filter by state/jurisdiction name (e.g. 'New York', 'Florida'). Case-insensitive. Returns all jurisdictions if not specified. cause_group: Filter by cause group (e.g. 'COVID-19', 'Respiratory', 'Circulatory', 'Malignant neoplasms'). Partial match supported. Returns all cause groups if not specified. limit: Maximum number of records to return (default 50, max 1000).

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected532 ms5