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Comet's official Opik MCP: query traces and spans of LLM apps in chat, log scores and comments, and manage datasets, experiments and prompt versions. Works with Opik Cloud (API key or browser sign-in) and self-hosted open-source Opik.

Edits formulaic or AI-sounding prose with small phrasing changes, keeping the author's voice, facts, citations, technical claims and paragraph structure. Leaves deliberate fragments, parallelism and humor alone; can return review findings or apply the edits directly.

hledger workflow that files bank and card CSV exports in a set folder layout and applies rules to build journals in one step, rebuilding when rules change. Needs hledger; download from Releases (macOS and Linux only). Have an accountant check the books.

Official iFlytek skills: machine translation, video translation and dubbing, Chinese document proofreading, PDF, image and invoice OCR, speech-to-text and TTS, plus contract review (lawyer check needed). Needs iFlytek open platform services and keys; contract review also needs OCR and LLM APIs.

Official iFlytek skill that translates text or text files via iFlytek's machine translation API across Chinese, English, Japanese, Korean, French, Spanish, Arabic and more, up to 4,096 bytes per call. Needs Python 3 and iFlytek open platform credentials; paid beyond the free quota.

SE Ranking's official skills that turn SEO data into deliverables: content briefs, keyword clustering, AI search visibility, technical site audits, backlink gap and competitor analysis, 90-day SEO plans. Most need SE Ranking API access (OAuth sign-in); Google data skills need Python.

PayPal's official agent toolkit, including the @paypal/mcp server: create and send invoices, handle orders and refunds, manage disputes, subscriptions, product catalogs and shipment tracking, and look up transactions. Needs a PayPal developer access token; defaults to the sandbox.

MongoDB's official plugin: runs the MongoDB MCP locally via npx and adds skills for query generation, index tuning, schema design, and full-text and vector search. Connects to self-hosted or Atlas databases with a connection string.

MongoDB's official skill library covering document model design, driver connection setup, query optimization, natural-language query generation, Atlas full-text and vector search, and stream processing. Works alongside the MongoDB MCP Server.

Official CLI for Mercury, the business banking platform for startups: check balances and transactions, download statements, manage recipients, customers, invoices and cards, and send payments. JSON/YAML output helps agents reconcile. Needs a Mercury login or API token; confirm payments by hand.

Official Alibaba Cloud MCP: query logs, metrics and traces from SLS, CloudMonitor and ARMS, with time-series comparison and natural-language-to-SQL. Needs an AccessKey; some AI tools are billed per call. The install uses the Python version (main branch is now a Go binary).

Microsoft Translator's translation quality tool: GPT scores each sentence using MQM error categories or a direct score; --list_mqm_errors shows error types and severity. Needs line-aligned source and target files, Python and an OpenAI or Azure OpenAI key (paid); a translator should still review.

Gives agents 250+ Financial Modeling Prep endpoints: financials, valuation and technical indicators, insider and congressional trades, SEC filings and earnings calendars. Needs an FMP API key (free tier); connect to the author's hosted URL or run locally on Node.js 25.3+. Results need expert review.

Octagon AI's official research MCP: ask in plain language about SEC filings, earnings calls, financial metrics, stock and crypto prices and news; also prediction-market reports and a deep research agent. Needs a free API key and Node.js. Not investment advice; verify findings.

Official BibiGPT skill: hand agents YouTube, Bilibili, podcast or local audio and video to get summaries, timestamped transcripts, chapter notes and mind maps. Needs a BibiGPT account (free tier has daily limits) plus its desktop app (with the bibi CLI) or an API key.

Alibaba Cloud's official ops MCP: manage ECS, RDS, OSS, VPC and other resources in plain language, view CloudMonitor metrics, and analyze a project and deploy it to ECS. Needs an Alibaba Cloud AccessKey and uv.

Connects any FHIR-compliant EHR server (e.g. the Epic sandbox or HAPI) to agents to search, read, create and update patient clinical data in plain language, with SMART on FHIR auth. By WSO2. Needs a FHIR server URL, access token and uv; clinicians must review results.

Tencent Cloud's official CLI: call any Tencent Cloud API by product and action name to manage resources (e.g. tccli cvm DescribeZones), with multiple profiles, role credentials and JSON or table output for scripting. Needs a SecretId and SecretKey.

Lets agents inspect Alibaba Cloud ACK clusters, run kubectl operations, query Prometheus metrics, control-plane and audit logs, and run resource diagnostics and health checks. Maintained by Alibaba Cloud; needs an AccessKey and cluster RBAC permissions.

DeepL's official MCP: translate text and documents (PDF, DOCX, PPTX, XLSX and more) and rephrase or polish writing, using the glossaries and style rules in your account. Needs a DeepL API key.

Jenkins plugin that turns Jenkins itself into an MCP server: agents can list jobs, trigger and rerun builds, page through and search build logs, and view test results and SCM info. Hosted in the official jenkinsci organization; authenticates with a Jenkins API token over Basic auth.

Strips AI-writing tells from prose while keeping meaning, voice and density: locks facts and quotes, flags filler, inflated significance and formulaic contrast, and rewrites without inventing details. Includes scripts for slop, passive-voice and meaning-preservation checks.

Shapes the agent's own replies rather than your documents: separates what changed from what was verified, cuts invented confidence, leads with the action and keeps load-bearing caveats. Manually invoked and stays on until you say stop; a script can enable it in CLAUDE.md or AGENTS.md.

Neon's official plugin combining the Neon MCP and skills to manage serverless Postgres: projects and branches, object storage, Functions and the AI Gateway. Signs in to Neon via OAuth the first time you use the MCP.