MCP server

Rubrkit Official

com.rubrkit/rubrkit

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

MCP-native AI evaluation: rubric audits, eval suites, and proof reports for AI/LLM output.

Website Source

At a glance

Type

MCP server

Publisher

rubrkit.com (verified by the MCP Registry)

Status

Working at last check

Tools

41

Token cost

About 5,141 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http rubrkit https://www.rubrkit.com/api/v1/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.rubrkit]
url = "https://www.rubrkit.com/api/v1/mcp"

Gemini CLI

{"mcpServers":{"rubrkit":{"httpUrl":"https://www.rubrkit.com/api/v1/mcp"}}}

Cursor

{"mcpServers":{"rubrkit":{"url":"https://www.rubrkit.com/api/v1/mcp"}}}

VS Code

{"servers":{"rubrkit":{"type":"http","url":"https://www.rubrkit.com/api/v1/mcp"}}}

Antigravity

agy mcp add rubrkit https://www.rubrkit.com/api/v1/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"rubrkit","server_url":"https://www.rubrkit.com/api/v1/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"rubrkit","server_url":"https://www.rubrkit.com/api/v1/mcp"}

Tools

• rubrkit_add_golden_case ~192 tokens
  Add a golden case (a real edge-case input with a confirmed-correct output) to an artifact bundle via POST /api/v1/artifact-bundles/{artifactBundleId}/golden-cases. Requires artifact_bundles:write for API keys.
• rubrkit_apply_audit_rewrite ~107 tokens
  Apply a completed audit's AI rewrite to the bundle files (a new version per changed file). Requires audits:run for API keys.
• rubrkit_apply_deep_compaction ~132 tokens
  Save a succeeded deep compaction job's verified result as a new version of the file. Refused if the file changed since the job started. Requires files:write for API keys.
• rubrkit_compact_artifact_file ~224 tokens
  Shorten a markdown or text prompt without losing instructions. mode standard (default) is a free deterministic pass that saves a new version unless dryRun is true; requires files:write for API keys. mode deep starts an AI compaction job that uses credits, verifies every instruction was kept, and nev
• rubrkit_create_artifact_bundle ~132 tokens
  Create an artifact bundle through /api/v1/artifact-bundles. Requires artifact_bundles:write for API keys.
• rubrkit_create_drift_monitor ~144 tokens
  Create a drift monitor pinned to a file version via POST /api/v1/artifact-bundles/{artifactBundleId}/drift-monitors. Requires artifact_bundles:write for API keys.
• rubrkit_delete_artifact_bundle Deletes data · ~122 tokens
  Archive an artifact bundle (soft delete) through DELETE /api/v1/artifact-bundles/{artifactBundleId}. The bundle moves to the archived state and can be restored or permanently deleted later. Requires artifact_bundles:write for API keys.
• rubrkit_estimate_deep_compaction ~104 tokens
  Estimate the credit cost of a deep compaction of one file before starting it. Requires compactions:run for API keys.
• rubrkit_export_proof_report ~227 tokens
  Start an async proof report job with export storage enabled by default. Requires evals:run for API keys.
• rubrkit_hard_delete_artifact_bundle Deletes data · ~138 tokens
  Permanently delete an archived artifact bundle and all of its files, versions, and run history through DELETE /api/v1/artifact-bundles/{artifactBundleId}/permanent. This is irreversible and only works on bundles that are already archived. Requires artifact_bundles:write for API keys.
• rubrkit_list_artifact_bundle_versions ~98 tokens
  List bundle-level version events. Requires artifact_bundles:read for API keys.
• rubrkit_list_artifact_bundles ~101 tokens
  List artifact bundles through /api/v1/artifact-bundles. Requires artifact_bundles:read for API keys.
• rubrkit_list_artifact_files ~92 tokens
  List files in an artifact bundle. Requires files:read for API keys.
• rubrkit_list_audits ~92 tokens
  List persisted audit history. Requires artifact_bundles:read for API keys.
• rubrkit_list_drift_monitors ~104 tokens
  List the drift monitors for an artifact bundle via /api/v1/artifact-bundles/{artifactBundleId}/drift-monitors. Requires artifact_bundles:read (or artifacts:pull) for API keys.
• rubrkit_list_evals ~88 tokens
  List eval history. Requires artifact_bundles:read for API keys.
• rubrkit_list_file_versions ~108 tokens
  List immutable versions for a file. Requires files:read for API keys.
• rubrkit_list_golden_cases ~122 tokens
  List the golden cases for an artifact bundle via /api/v1/artifact-bundles/{artifactBundleId}/golden-cases. Requires artifact_bundles:read (or artifacts:pull) for API keys.
• rubrkit_list_job_events ~86 tokens
  Read append-only job progress events. Requires jobs:read for API keys.
• rubrkit_poll_job ~61 tokens
  Read async job progress. Requires jobs:read for API keys.
• rubrkit_read_api_doc ~73 tokens
  Read a docs/api Markdown guide or OpenAPI source by slug, file name, or docs/api path.
• rubrkit_read_artifact_bundle ~82 tokens
  Read artifact bundle details, files, and file tree. Requires artifact_bundles:read for API keys.
• rubrkit_read_artifact_file ~90 tokens
  Read the latest file metadata and content. Requires files:read for API keys.
• rubrkit_read_audit ~88 tokens
  Read a single audit run. Requires artifact_bundles:read for API keys.
• rubrkit_read_drift_observations ~104 tokens
  List the recorded observations for a drift monitor via /api/v1/drift-monitors/{driftMonitorId}/observations. Requires artifact_bundles:read (or artifacts:pull) for API keys.
• rubrkit_read_eval ~112 tokens
  Read one eval run, including the `stats` statistical verdict on advanced-mode runs (empty for standard runs). Requires artifact_bundles:read for API keys.
• rubrkit_read_input_drift ~148 tokens
  Compare recent production inputs against a prior reference window (population stability index) for an artifact bundle via GET /api/v1/artifact-bundles/{artifactBundleId}/drift/input. Requires artifact_bundles:read (or artifacts:pull) for API keys.
• rubrkit_read_openapi_contract ~45 tokens
  Read the canonical docs/api/openapi.yaml contract.
• rubrkit_read_proof_report ~92 tokens
  Read one proof report. Requires artifact_bundles:read for API keys.
• rubrkit_read_validity_drift ~128 tokens
  Correlate rubric scores against recorded outcome metrics for an artifact bundle to check whether the rubric is still predictive via GET /api/v1/artifact-bundles/{artifactBundleId}/drift/validity. Requires artifact_bundles:read (or artifacts:pull) for API keys.
• rubrkit_record_outcome ~178 tokens
  Record a production outcome event (input feature, metric, and/or label) for an artifact bundle via POST /api/v1/artifact-bundles/{artifactBundleId}/outcomes. Requires artifact_bundles:write for API keys.
• rubrkit_restore_artifact_bundle_version ~129 tokens
  Restore files from a prior artifact-bundle version by creating new file versions. Requires artifact_bundles:write and files:write for API keys.
• rubrkit_restore_file_version ~126 tokens
  Restore a prior file version by creating a new version. Requires files:write for API keys.
• rubrkit_retire_golden_case ~84 tokens
  Retire a golden case via DELETE /api/v1/golden-cases/{goldenCaseId}. Requires artifact_bundles:write for API keys.
• rubrkit_run_drift_check ~128 tokens
  Queue a drift check immediately instead of waiting for the monitor's schedule, via POST /api/v1/drift-monitors/{driftMonitorId}/check. The first check on a new monitor calibrates its baseline. Costs one audit per repeat. Requires artifact_bundles:write for API keys.
• rubrkit_run_evals ~324 tokens
  Start an async eval run. Requires evals:run for API keys. Set mode: "advanced" with baselineVersionId and candidateVersionId to run a statistically-backed A/B (repeats defaults to 3, max 5).
• rubrkit_search_api_docs ~87 tokens
  Search the canonical docs/api Markdown guides and OpenAPI operation summaries.
• rubrkit_set_drift_monitor_status ~109 tokens
  Pause or resume a drift monitor via PATCH /api/v1/drift-monitors/{driftMonitorId}. Requires artifact_bundles:write for API keys.
• rubrkit_start_audit ~254 tokens
  Start an async audit job. Audit results are cached per account by a content hash of their inputs; pass force: true to bypass the cache and run a fresh audit (the same as the CLI's --no-cache flag). Requires audits:run for API keys.
• rubrkit_update_artifact_file ~123 tokens
  Write a new editable version for a file. Requires files:write for API keys.
• rubrkit_upload_artifact_files ~163 tokens
  Upload one or more text files into an artifact bundle. Requires files:write for API keys.

Browse

• Converting to Markdown
• Calling other AI models

Related MCP servers

• AI PM Lab
  Learn how AI products work: lessons, model cost comparisons, real experiments, PM guides.
• IA-QA — 130+ QA & Dev Tools for AI Agents
  130+ QA & dev tools for AI agents: prompt injection, RAG testing, VLM eval, guardrails. Free.
• Apex Edge — x402-paid machine services
  x402-paid MCP tools: utils, audit screens, corpus search, inference. USDC Base+Solana.
• Moretes Architect MCP
  Evidence-first architecture workbench: 48 deterministic tools, 10 architect personas, any cloud
• ZeroWidth Caliper
  Build datasets and rubrics, then run evals that score your AI in Caliper.
• STEADYWRK Agentic Readiness Probe, Store Guard and Dispatch
  Keyless storefront readiness probe linking a Store Guard audit, plus dispatch estimates and quotes.
• Synthex Forge — x402 Paid Agent Services
  Paid agent services settled in USDC on Base via x402. Signed, verifiable, and free to verify.
• Skill Market
  x402 skill catalog on lvlltd.com — search, quote, pay with Base USDC, unlock sealed packs.

Badge for your README

[![AptLynx](https://aptlynx.net/badge/com.rubrkit/rubrkit.svg)](https://aptlynx.net/servers/com.rubrkit/rubrkit)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents