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SigRank — AI Operator Benchmarking

REMOTE · SIGNALAF.COM · SCANNED SEP 21

SigRank benchmark MCP: cascade metrics, leaderboard, operator profiles, simulation, diagnostics.

Available components

+4 this week 78 Trust /100
Trust breakdown (7 categories)

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. How we score → Why this is hard to score →

Endpoint Security80
Transport & Reachability100
Schema Quality & AI Usability76
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 4383 tokens (~182/item across 24 items; 16 tools + 8 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management33
  • Stability check failed: schema churn in the 25 days we've observed: 0 tool removals, 15 breaking changes, 0 auth/transport breaks, 1 additions. See how to fix → Fail
Tool Coverage93
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 74% of tool parameters carry a description.Partial
  • Structured output schemas are declared (25% of tools); any adoption earns full credit.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 16 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a current MCP spec version (2026-07-28).Pass
Install

How do I install the SigRank — AI Operator Benchmarking MCP server?

SigRank — AI Operator Benchmarking is a hosted endpoint at https://signalaf.com/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · signalaf.com

# add to Claude Code
claude mcp add --transport http com-signalaf-sigrank 'https://signalaf.com/api/mcp'
// .cursor/mcp.json
{
  "mcpServers": {
    "com-signalaf-sigrank": {
      "url": "https://signalaf.com/api/mcp"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "com-signalaf-sigrank": {
      "type": "http",
      "url": "https://signalaf.com/api/mcp"
    }
  }
}
# ~/.codex/config.toml
[mcp_servers.com-signalaf-sigrank]
url = "https://signalaf.com/api/mcp"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-signalaf-sigrank": {
      "type": "remote",
      "url": "https://signalaf.com/api/mcp",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add com-signalaf-sigrank --url 'https://signalaf.com/api/mcp' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  com-signalaf-sigrank:
    url: "https://signalaf.com/api/mcp"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "com-signalaf-sigrank": {
      "Transport": "http",
      "Url": "https://signalaf.com/api/mcp"
    }
  }
}
# add to Vellum
assistant mcp add com-signalaf-sigrank -t streamable-http -u 'https://signalaf.com/api/mcp'
// mcp.json
{
  "mcpServers": {
    "com-signalaf-sigrank": {
      "type": "http",
      "url": "https://signalaf.com/api/mcp"
    }
  }
}

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

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 21 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 29 to 33.

  • 19 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 22 to 26.

  • 17 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 16 to 19.

  • 15 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 9 to 13.

  • 12 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 0 to 3.

  • 8 Sept 26 0
    • The server rewrote its instructions, which are the text every model session reads security
  • 4 Sept 26 −5
    • Stability: 0.23 → fail security
    • A breaking change shipped without a version bump: still 1.0.0 security
    • Schema quality: 111 → 182 functional
    • “benchmark_me” added a required parameter “context”, so existing callers break functional
    • “compare_to_field” added a required parameter “context”, so existing callers break functional
    • “diagnose_cascade” added a required parameter “context”, so existing callers break functional
    • “field_anomaly” added a required parameter “context”, so existing callers break functional
    • “get_leaderboard” added a required parameter “context”, so existing callers break functional
    • “get_operator” added a required parameter “context”, so existing callers break functional
    • “get_sigrank_standard_record” added a required parameter “context”, so existing callers break functional
    • “operator_gap” added a required parameter “context”, so existing callers break functional
    • “operator_signature” added a required parameter “context”, so existing callers break functional
    • “rank_if” added a required parameter “context”, so existing callers break functional
    • “rank_paste” added a required parameter “context”, so existing callers break functional
    • “rank_windows” added a required parameter “context”, so existing callers break functional
    • “self_improve” added a required parameter “context”, so existing callers break functional
    • “simulate_change” added a required parameter “context”, so existing callers break functional
    • “suggest_improvements” added a required parameter “context”, so existing callers break functional
    • “who_operates_like_me” added a required parameter “context”, so existing callers break functional
    • Tool coverage: 69% → 74% functional
    • Schema quality: excellent → good functional
  • 3 Sept 26 +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.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 21 Sept 2026 · Probed https://signalaf.com/api/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=signalaf.com CN=YR1,O=Let's Encrypt,C=US 19 Aug 2026 17 Nov 2026 RSA 2048 SHA256-RSA 5c4e742624ffd4d00250198ec01c5818860
SANs: signalaf.com
CN=YR1,O=Let's Encrypt,C=US (CA) CN=Root YR,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 RSA 2048 SHA256-RSA a20253f15f2691c05dc1ce13b9bcca4e
CN=Root YR,O=ISRG,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 RSA 4096 SHA256-RSA f24b6d17f9d9ad7cb1c9fea78782699f

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of signalaf.com. Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
com. present 19718 13 Verified
signalaf.com. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=63072000
content-security-policy default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://*.vercel-scripts.com https://www.googletagmanager.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https://*.posthog.com https://*.supabase.co wss://*.supabase.co https://www.google-analytics.com https://*.google-analytics.com; frame-ancestors 'self'
x-content-type-options nosniff
x-frame-options SAMEORIGIN
referrer-policy strict-origin-when-cross-origin

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://signalaf.com/api/mcp Verified 200
http (plaintext) http://signalaf.com/api/mcp HTTPS enforced 308 https://signalaf.com/api/mcp
MCP tools · 16 exposed · ~3,982 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
benchmark_me ~325

Answers 'How good am I?' — benchmarks your token cascade against the live field. Takes 4 token pillars (or a codename), computes your cascade, then compares against the live leaderboard: percentile, rank, distance from median, distance from top 10%, strongest metric, weakest metric, and a one-line interpretation. This is the human-question tool — use it when someone asks 'am I a power user?' or 'how do I compare?'.

NameTypeReqDescription
cache_readnumberCache-read tokens. Required if codename is not provided.
cache_writenumberCache-write tokens. Required if codename is not provided.
codenamestringOperator codename (alternative to providing pillars). If provided, fetches live profile from the board.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberTotal input tokens. Required if codename is not provided.
outputnumberTotal output tokens. Required if codename is not provided.
windowstringTime window for field comparison (default 30d).

No output schema declared.

No examples provided.

compare_to_field ~244

Creates a 'YOU vs FIELD vs TOP 10% vs TOP 1%' comparison table for your cascade metrics. Takes 4 pillars or a codename, fetches the live leaderboard, and returns your metrics alongside field median, top quartile, top decile, and top percentile for yield, leverage, velocity, and SNR. Simple, useful, and immediately understandable.

NameTypeReqDescription
cache_readnumber
cache_writenumber
codenamestringOperator codename (alternative to pillars)
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumber
outputnumber
windowstring

No output schema declared.

No examples provided.

diagnose_cascade ~237

Analyzes your token cascade and diagnoses where you're leaking efficiency. Takes 4 token pillars and produces a ranked list of efficiency leaks with severity (critical/warning/info), findings, recommendations, and estimated Υ impact. Checks: cache leverage, velocity, SNR, cache creation ratio, input bloat, and 10xDEV compounding. Use this before simulate_change to understand what's wrong.

NameTypeReqDescription
cache_readnumberyesCache-read tokens.
cache_writenumberyesCache-write tokens.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberyesTotal input tokens.
outputnumberyesTotal output tokens.

No output schema declared.

No examples provided.

field_anomaly ~188

Finds unusual operators, metric relationships, and outliers in the live leaderboard — without user prompting. Returns: highest velocity among below-median leverage operators, only top-50 operator with near-zero cache write, largest 30-day yield improvement, rarest signature, and extreme divergence. Powers automated micro-marketing and field insights.

NameTypeReqDescription
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
windowstring

No output schema declared.

No examples provided.

get_leaderboard ~191

Read the current public SigRank operator leaderboard. Returns ranked operators with Yield, Leverage, class tier, and display name.

NameTypeReqDescription
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
limitintegerMaximum number of operators to return (1–100, default 25).
windowstringTime window for the leaderboard: 7d, 30d, 90d, or all_time.
NameTypeReqDescription
entriesarray
total_operatorsintegerNumber of operators returned.
windowstringThe time window used for the query.

No examples provided.

get_operator ~176

Read one public operator profile by codename. Returns class tier, rank, percentile, Yield, Leverage, Velocity, and SNR.

NameTypeReqDescription
codenamestringyesThe operator's unique codename (e.g. signal-ae3b5c3c55). Not the display name.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
NameTypeReqDescription
class_tierstringOperator class tier.
codenamestringOperator's unique codename.
display_namestringHuman-readable display name.
leveragenumber|nullLeverage if compounding, else null.
percentilenumberPercentile in the public field.
rankintegerGlobal rank position.
snrnumber|nullSignal-to-noise ratio.
velocitynumber|nullVelocity = output / input.
yield_number|nullYield (Υ) if compounding, else null.

No examples provided.

get_sigrank_standard_record ~280

Build a SigRank Standard v0.1-draft portable operator record from available token telemetry. Input and output are required; unavailable cache telemetry remains null. Computes only the five-metric portable core through @sigrank/cascade and does not submit or persist data.

NameTypeReqDescription
cache_readinteger|nullCache-read tokens, or null when unavailable.
cache_writeinteger|nullCache-write / cache-creation tokens, or null when unavailable.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputintegeryesFresh input tokens.
modelstringOptional model identifier.
outputintegeryesOutput tokens.
providerstringOptional provider identifier.
timestampstringOptional ISO-8601 timestamp. Defaults to the current time.
toolstringOptional tool/client identifier.
NameTypeReqDescription
metricsobjectyes
sourceobjectyes
specyes
telemetryobjectyes
timestampstringyes
warningsarrayyes

No examples provided.

operator_gap ~296

Answers 'What specifically separates operator A from operator B?' — not just 'A has more Yield', but the primary cause, secondary cause, and offsetting weakness. Takes two codenames or two sets of pillars, computes both cascades, and decomposes the yield gap into leverage, velocity, SNR, and scale contributions. Returns the most explanatory factor.

NameTypeReqDescription
a_cache_readnumber
a_cache_writenumber
a_codenamestringCodename for operator A (alternative to a_* pillars)
a_inputnumber
a_outputnumber
b_cache_readnumber
b_cache_writenumber
b_codenamestringCodename for operator B (alternative to b_* pillars)
b_inputnumber
b_outputnumber
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…

No output schema declared.

No examples provided.

operator_signature ~232

Computes a normalized operating signature from 4 token pillars or a codename. Returns a signature code, a legacy six-label signature_label, dominant trait, and closest comparable operators from the live board. The deprecated archetype field is retained as a compatibility alias; these labels are not the 10-type Build Archetypes reference extension.

NameTypeReqDescription
cache_readnumber
cache_writenumber
codenamestringOperator codename (alternative to pillars)
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumber
outputnumber
windowstring

No output schema declared.

No examples provided.

rank_if ~317

Answers 'What would it take to reach a target rank?' — takes your current 4 token pillars and a target percentile (e.g. 90 for top 10%), then simulates the smallest metric changes needed to reach that position. Returns: current rank/percentile, simulated rank/percentile, the specific pillar changes required, and the yield delta. This turns SigRank from a scoreboard into a simulator. Use it when someone asks 'what would move my rank?' or 'how do I get to top 10%?'.

NameTypeReqDescription
cache_readnumberyesCurrent cache-read tokens.
cache_writenumberyesCurrent cache-write tokens.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberyesCurrent input tokens.
outputnumberyesCurrent output tokens.
target_percentilenumberyesTarget percentile (0-100). E.g. 90 for top 10%, 99 for top 1%.
windowstringTime window for field comparison (default 30d).

No output schema declared.

No examples provided.

rank_paste ~214

Calculate SigRank cascade metrics from four non-negative token counts without submitting data. Returns Yield, Leverage, Velocity, SNR, and 10xDEV. No data is persisted.

NameTypeReqDescription
cache_readnumberyesTokens read from prompt cache (reused context).
cache_writenumberyesTokens written to prompt cache (new context stored for reuse).
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberyesTotal input tokens consumed in the session.
outputnumberyesTotal output tokens generated.
NameTypeReqDescription
cache_readnumberEchoed cache-read token count.
cache_writenumberEchoed cache-write token count.
dev10xnumber|nulllog₁₀(Leverage). Logarithmic context amplification.
inputnumberEchoed input token count.
leveragenumber|nullLeverage = cache_read / input. Reusable context amplification. Null when input is zero.
non_compoundingbooleanTrue if cache_write is zero (no compounding context).
outputnumberEchoed output token count.
snrnumber|nullSignal-to-noise ratio = output / (input + output). Null when input is zero.
velocitynumber|nullVelocity = output / input. Output per unit of input. Null when input is zero.
yield_number|nullYield (Υ) = (cache_read × output) / input². Headline cascade efficiency. Null when input is zero.

No examples provided.

rank_windows ~257

Score up to 4 time windows (7d, 30d, 90d, all-time) in one call. Each window is scored independently with the full cascade (Υ, SNR, Leverage, Velocity, 10xDEV, class). Omit windows you don't have — partial input is allowed (1-4 windows). Does NOT submit to the board.

NameTypeReqDescription
30dobject30-day window token pillars (optional)
7dobject7-day window token pillars (optional)
90dobject90-day window token pillars (optional)
allobjectAll-time window token pillars (optional)
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…

No output schema declared.

No examples provided.

self_improve ~250

Runs the full self-improvement cycle in one call: (1) computes your current cascade from 4 token pillars, (2) diagnoses efficiency leaks, (3) generates ranked improvement suggestions, (4) simulates the top suggestion, and (5) returns the complete cycle: diagnosis + suggestions + simulated impact of the best change. The 'one-click optimize' tool — call it at the end of a session to see what to improve next time.

NameTypeReqDescription
cache_readnumberyesCache-read tokens.
cache_writenumberyesCache-write tokens.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberyesTotal input tokens.
outputnumberyesTotal output tokens.

No output schema declared.

No examples provided.

simulate_change ~276

Prescriptive 'what if' tool — takes your current 4 token pillars and proposed changes, runs the cascade on both, returns the exact Υ Yield delta, class change, and per-metric diffs. Test proposed pillar changes and see the payoff before changing your workflow. Changes can be absolute numbers (replace) or strings starting with +/- for relative deltas.

NameTypeReqDescription
cache_readnumberyesCurrent cache-read tokens.
cache_writenumberyesCurrent cache-write tokens.
changesobjectyesProposed changes. Keys: input, output, cache_read, cache_write. Values are absolute numbers (replace) or strings starting with +/- for relative deltas. Omitted pillars are unchanged.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberyesCurrent input tokens.
outputnumberyesCurrent output tokens.

No output schema declared.

No examples provided.

suggest_improvements ~239

Generates ranked, simulated improvement suggestions for your token cascade. Takes 4 token pillars, tests multiple strategies (increase cache reads, reduce input, increase output, optimize cache creation), simulates each, and returns them ranked by Υ yield impact. Each suggestion includes the action, pillar to change, projected Υ, yield delta, projected class, and rationale. Returns the single highest-impact change as best_single_change.

NameTypeReqDescription
cache_readnumberyesCache-read tokens.
cache_writenumberyesCache-write tokens.
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumberyesTotal input tokens.
outputnumberyesTotal output tokens.

No output schema declared.

No examples provided.

who_operates_like_me ~260

Finds operators whose operating signature most resembles yours. Takes 4 pillars or a codename, computes your signature, then searches the live leaderboard for the nearest neighbors by signature distance. Returns: nearest operators, similarity %, where they outperform you, where you outperform them, and what separates you from the better operator. Makes the leaderboard feel like a network, not a list.

NameTypeReqDescription
cache_readnumber
cache_writenumber
codenamestringOperator codename (alternative to pillars)
contextstringyesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVE…
inputnumber
limitnumberNumber of nearest neighbors to return (default 5)
outputnumber
windowstring

No output schema declared.

No examples provided.

Common questions

What is the SigRank — AI Operator Benchmarking MCP server?

SigRank — AI Operator Benchmarking is an MCP server listed in the public MCP registry as com.signalaf/sigrank. SigRank benchmark MCP: cascade metrics, leaderboard, operator profiles, simulation, diagnostics. This page covers its hosted endpoint (https://signalaf.com/api/mcp).

Is the SigRank — AI Operator Benchmarking MCP server safe to use?

SigRank — AI Operator Benchmarking scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the SigRank — AI Operator Benchmarking MCP server expose?

SigRank — AI Operator Benchmarking exposes 16 tools: rank_paste, get_sigrank_standard_record, get_leaderboard, get_operator, simulate_change, and 11 more. Their descriptions and schemas cost roughly 3,982 tokens of context every time the server is loaded.

Does the SigRank — AI Operator Benchmarking MCP server require authentication?

No. We connected to SigRank — AI Operator Benchmarking without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the SigRank — AI Operator Benchmarking MCP server still maintained?

SigRank — AI Operator Benchmarking is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.