Uptime (30d)%100.0

Latency (p50)878 msfaster than 21% of servers

Protocol eralegacy

Tools21

AimRank

Description

Read public pairwise-preference rankings and their statistical quality evidence. No API key.

What our measurements say

AimRank is a remote MCP server published at app.aimrank.io. It has been probed 13 times since 9/12/2026. It answered in 13 of them (100.0%), a near-uninterrupted record. Median response time is 878 ms, a delay an agent will notice. It exposes a broad tool surface of 21 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.

LegacyLegacy ⚠Website ↗Version: 4.12.0First probe: 2026-09-12 15:21:42Last probe: 2026-09-13 16:52:42

Agent readability score

Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.

Agent readability score

AimRank tools are well-structured but lack clarity in some parameter definitions and tool naming.based on measured tool list

Strengths

Tool names generally align with their purpose (e.g., 'aimrank_get_daily_pair')
Detailed descriptions for ranking metadata and matchup strategies
Consistent use of 'ranking_id' parameter across relevant tools

Weaknesses

Some parameters have null type definitions (e.g., 'api_key')
Overlapping functionality between 'aimrank_get_leaderboard' and 'aimrank_get_ranking'
Ambiguous tool names like 'aimrank_predict' without specifying prediction type

aimrank_get_daily_pair — Incomplete description of fallback behavior
aimrank_predict — Vague name without specifying prediction context
aimrank_get_ranking — Missing explicit error handling for missing 'api_key'
aimrank_get_leaderboard — Functionally overlaps with 'aimrank_get_ranking'
aimrank_healthcheck — No parameters listed despite being a critical tool

Verdict

The AimRank toolset demonstrates strong organization with clear domain-specific functionality, but requires improvements in parameter type consistency, tool name specificity, and documentation of edge cases. The 85/100 score reflects its solid foundation while acknowledging areas for refinement in API clarity and error handling.

9/12/2026, 10:17:59 PM

Event narrative

Supported versions

2025-11-25

as declared by server/discover + initialize

Capabilities

experimental, prompts, resources, tools

Schema score

100

21 tools

Schema compliance

tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.

100/100

Excellent21 tools

tools/list schema valid
inputSchema is valid JSON Schema
Smoke test passed · last run: 2026-09-13 04:35:29
Cold-start: cold 37ms → warm 35ms (penalty 2ms)

Tools

Tools the server advertised in the latest measurement — measured, not catalog-claimed.

aimrank_get_daily_pair1 param
Fetch today's Daily Pair — the trending matchup chosen at 00:00 UTC. Pairs with the `vote_of_the_day` agent template. Returns the challenge + a fresh matchup. If the cron hasn't run yet, falls back via ok=False so the agent can use `aimrank_get_matchup` instead. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- api_key
aimrank_get_ranking2 params · 1 required
Fetch a ranking's metadata + top 25 entities sorted by rating. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- api_key
aimrank_get_leaderboard3 params · 1 required
Get the top N entities of a ranking sorted by rating. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- api_key
- limitinteger
aimrank_get_matchup3 params · 1 required
Get the next pair of entities to evaluate. Strategies: adaptive (default), swiss, balanced, random, uncertainty, explore, information_gain. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- api_key
- strategystring
aimrank_search_entities4 params · 2 required
Find entities by name substring within a ranking. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- querystringrequired
- api_key
- limitinteger
aimrank_create_share_card3 params · 1 required
Return share-ready URLs + embed snippets for a ranking. Formats: "all" (default — everything), "twitter", "linkedin", "embed_leaderboard", "embed_vote", "badge_markdown", "qr_code", "data_card". Pass these to a human to paste into a tweet, blog, Notion page, or Slack message. The OG image renders automatically when the public_url is unfurled by Twitter / LinkedIn / Slack. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- api_key
- formatstring
aimrank_predict_matchup_winner4 params · 3 required
Predict the winner of a matchup BEFORE a vote is cast. Uses Glicko-2 win probability under the same formula matchmaking uses internally. Pairs with aimrank_submit_vote for the "Claude predicts, you vote, we compare" demo. Does not record a vote — read-only. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- entity_a_idstringrequired
- entity_b_idstringrequired
- api_key
aimrank_discover_public_rankings5 params
Browse public rankings — agent equivalent of surfing aimrank.io. Filters: category, media_type ("text" | "image" | "audio" | "video"), sort ("trending" | "recent" | "most_votes" | "random"), limit 1-50. Each result embeds share assets so the agent can hand any ranking back to the user as a clickable link without a follow-up call. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- api_key
- category
- media_type
- sortstring
- limitinteger
aimrank_list_domain_entities2 params · 1 required
List all entities in a domain's pool sorted by rating. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- domain_idstringrequired
- api_key
aimrank_get_domain2 params · 1 required
Get domain details including entity pool and competition list. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- domain_idstringrequired
- api_key
aimrank_list_competitions2 params · 1 required
List all competitions (open voting + brackets) in a domain. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- domain_idstringrequired
- api_key
aimrank_get_data_card3 params · 1 required
Auto data card — Layer 7. Provenance + IAA + coverage + per-annotator quality + transitivity + qualification stats in one synthesized markdown audit artefact. Format: 'markdown' (default) or 'json' for structured summary. api_key is optional on the public endpoint; on /mcp/mcp a missing key is refused.
- ranking_idstringrequired
- api_key
- formatstring

Availability history

Event log

Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.

yesterdayAdded to watch — era: Legacy

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Markdown

[![mcpmetrics](https://mcpmetrics.io/badge/io.aimrank/aimrank/era.svg)](https://mcpmetrics.io/servers/io-aimrank-aimrank)

HTML

<a href="https://mcpmetrics.io/servers/io-aimrank-aimrank"><img src="https://mcpmetrics.io/badge/io.aimrank/aimrank/era.svg" alt="mcpmetrics"></a>

Raw observations

You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.

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https://app.aimrank.io/mcp/public

Run	Era	Modern	ms	Legacy	ms	Versions
2026-09-13 16:52:42	Legacy	400	588	200	581	2025-11-25
2026-09-13 14:49:35	Legacy	400	1163	200	1161	2025-11-25
2026-09-13 12:47:19	Legacy	400	872	200	877	2025-11-25
2026-09-13 10:45:14	Legacy	400	874	200	878	2025-11-25
2026-09-13 08:43:04	Legacy	400	822	200	832	2025-11-25
2026-09-13 06:40:42	Legacy	400	1138	200	1133	2025-11-25
2026-09-13 04:35:29	Legacy	400	2057	200	2054	2025-11-25
2026-09-13 01:33:33	Legacy	400	438	200	428	2025-11-25
2026-09-12 23:31:36	Legacy	400	994	200	1210	2025-11-25
2026-09-12 21:29:15	Legacy	400	1166	200	1164	2025-11-25

AimRank

Description

What our measurements say

Agent readability score

Agent readability score

Strengths

Weaknesses

Verdict

Event narrative

Schema compliance

Tools

Availability history

Event log

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Raw observations

Era history

Response time history