Mmcp.market

ARBITER MCP server

by grip.fyi·fyi.grip/arbiter·v1.0.2
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Decision arbitration, action routing, workflow control, deployment remediation, persistent memory.

C69/100grade C
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Safety scan
C69/100

full report

Adoption
New

Little public usage data yet

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If you have run it, two minutes of your experience saves the next person an afternoon.

ARBITER tools (2)

write = sends, deletes, buys or posts
  • arbiter_compareFree

    Paid ARBITER finite-candidate measurement for contextual choice. Use when a caller already has an explicit candidate field and needs it ordered against a query, current state, intent, context, question, or perspective. query is the situation to measure. candidates is the finite caller-supplied field to order. top_k optionally limits returned results. Returns MCP text content containing the JSON result from POST /v1/compare with the supplied candidates ordered by measured coherence. Does not generate candidates or execute the selected action. Deterministic for identical inputs and engine state. Price: $0.01 USDC on Base per call. MCP identity: fyi.grip/arbiter.

  • arbiter_embedFree

    Paid ARBITER deterministic persistent machine representation. Use when a caller needs representations of supplied text for storage, indexing, retrieval, clustering, reuse, or later comparison. Use arbiter_compare instead when an explicit finite candidate field needs ordering now. texts is one or more supplied strings. Returns MCP text content containing the JSON result from POST /v1/embed. Does not store, retrieve, update, delete, or rank records. Deterministic for identical inputs and engine state. Price: $0.01 USDC on Base per call. MCP identity: fyi.grip/arbiter.

Public scan report

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 751ms20/20
  • Tool poisoning2 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenanceno repository listed3/15
  • Maintainer identityverified namespace with website, no repo4/10

Findings (1)

  • lowNo source repository listedmaint.no-repo
Overall 69/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install directly

claude mcp add --transport http arbiter https://api.grip.fyi/mcp
Add to Cursor

ARBITER: common questions

Is ARBITER MCP server safe?
With care: it is graded C, so read the findings first (69/100). Read the ARBITER safety report
How do I install ARBITER?
It runs remotely at api.grip.fyi. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
Does ARBITER need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is ARBITER maintained?
The latest release is v1.0.2.
Is ARBITER up?
100% of our last 5 checks got an answer. We check remote servers about four times a day.
What can I use instead of ARBITER?
Servers from other publishers that do the same job: State Memory MCP server, Knowl MCP server and Hypermnesia MCP server. Compare all ARBITER alternatives.

Alternatives to ARBITER

Same job from other publishers: the closest match first, then the best rated.

All ARBITER alternatives →
  • State Memory MCP
    Deterministic, persistent graph server for tracking workflow state, decisions, and blockers.
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  • Knowl
    Persistent memory for Claude Code, Cursor and Codex. Facts retire when they change.
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  • Hypermnesia
    Persistent memory for AI agents — 36 cited neuroscience mechanisms, local-first, hybrid retrieval.
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