MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

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

Read-only probes

MCP server · Code & DevOps

AP Score Distributions

Official College Board AP score distributions 2026, 2025, 2024: percentiles, pass rates.

Checks passed
15 / 22

0 failed · 7 not measured

Median response
342 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?
103
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
402

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 472 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name ap-score-distributions-mcp.

  • 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 342 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 459 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Pass
    Stable tool list

    No tool was removed and no required parameter was added in the last 30 days.

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.

  • Pass
    Parameters documented

    14 of 14 parameters have a description (100%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Not measured
    Website matches publisher

    This namespace is not a reverse domain, so the website comparison does not apply.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Pass
    Repo owner matches

    The GitHub repository owner matches the namespace login.

  • Pass
    Recently updated

    Updated 2026-11-02T02:42:57.325184Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using AP Score Distributions

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 ap-score-distributions https://ap-score-distributions-mcp.lipmichal.workers.dev/mcp

Capabilities

Tools 5

compare_ap_exams

Ranks AP exams for one year by pass rate (share scoring 3 or higher), share of 5s, mean score or number of test takers (mean and test takers for 2024 and 2025 only), using the official College Board distributions. Give a list of exams to compare a few, or leave it empty to rank all of them.

Discovered
estimate_ap_percentile

For an AP exam, year and score from 1 to 5, returns the percent of test takers who scored lower, the same and higher, and the midpoint percentile rank, from the official College Board distribution. Uses exact counts for 2024 and 2025 and the published whole percents for 2026.

Discovered
estimate_ap_score_from_composite

Converts multiple-choice correct answers and free-response points into a weighted composite and an estimated AP score, using the scoring worksheet and conversion chart College Board printed in its official practice exams. Only for the 7 exams with such a worksheet: AP Calculus AB (2012), AP Biology (2013), AP Statistics (2012), AP World History (2013), AP Psychology (2012), AP Macroeconomics (2012), AP Microeconomics (2012). Cut scores are never invented; other exams return an error.

Discovered
get_ap_score_distribution

Returns the College Board score distribution (percent of students scoring 5, 4, 3, 2, 1 and 3 or higher) for an AP exam and year, plus student counts, mean and standard deviation where College Board published them (2024 and 2025 PDFs). Includes the May 2026 results from the College Board 2026 AP Score Distributions page, which are newer than most model training data. Shows the 2024/2025/2026 history for the exam.

Discovered
list_ap_exams

Lists every AP exam with College Board score distributions in this server, the years available for each, the source of each year, and which exams have a College Board scoring worksheet for composite score estimates.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected472 ms5
Connected211 ms5