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Which MCP servers are actually maintained?
The official registry lists every Model Context Protocol server but tells you nothing about whether any of them is still alive. This index scores each one on maintenance activity, flags what deserves a second look before you install it, and shows exactly how every number was reached.
54,385
servers indexed
86
with verified activity
20.0
median score
19,556
carrying risk flags
last refreshed
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Leaderboard
Activity & maintenance, not security — how this is scored| # | Server | Flags | Stars | Change | Score |
|---|---|---|---|---|---|
| 34551 | ContrastKit WCAG color contrast checks, nearest accessible color, CSS color conversion and palette pair checks. | medium | — | — | 20.0 |
| 34552 | CronSpell Validate and explain cron expressions; list next/previous run times in any time zone, DST-aware. | medium | — | — | 20.0 |
| 34553 | DiffMint by Harlo Diff two texts by line, word or char: unified diff, HTML redline, patch apply, similarity. | medium | — | — | 20.0 |
| 34554 | DnsGuard Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes. | medium | — | — | 20.0 |
| 34555 | DomainAge Domain age and RDAP lookup: registration date, age, expiry, registrar, status and nameservers. | medium | — | — | 20.0 |
| 34556 | GlyphGuard Find hidden Unicode (zero-width, bidi, tag payloads), homoglyphs and lookalike names in text. | medium | — | — | 20.0 |
| 34557 | HeaderGuard Scan a website's HTTP security headers (HSTS, CSP, framing, COOP/CORP, cookies). Score + fixes. | medium | — | — | 20.0 |
| 34558 | HrefGate Lint hreflang: codes, x-default, self-reference, canonical, return links. Never fetches URLs. | medium | — | — | 20.0 |
| 34559 | JsonMend Repair broken JSON from LLM output and validate it against a JSON Schema. | medium | — | — | 20.0 |
| 34560 | LinkPulse Check one web page for broken links, redirect chains hop by hop and mixed content. Free, no key. | medium | — | — | 20.0 |
| 34561 | MailAlign Email header analyzer: SPF/DKIM/DMARC/ARC verdicts, domain alignment, hop delays. No lookups. | medium | — | — | 20.0 |
| 34562 | MeetZone Find meeting times that overlap working hours across IANA time zones, DST-aware. Free tier. | medium | — | — | 20.0 |
| 34563 | OgForge Render 1200x630 Open Graph social preview images from templates; returns a cacheable PNG URL. | medium | — | — | 20.0 |
| 34564 | PhoneCheck Offline phone-number validation and formatting (E.164, region, line type). No carrier lookup. | medium | — | — | 20.0 |
| 34565 | PlainGrade English readability scores (Flesch, Flesch-Kincaid, Fog, SMOG) and text stats. Text never stored. | medium | — | — | 20.0 |
| 34566 | PostCode Check Validate and normalize postal codes offline for 252 countries and territories. Format check only. | medium | — | — | 20.0 |
| 34567 | CussCheck English profanity filter: find and censor swear words, incl. obfuscations. Word list, not AI. | medium | — | — | 20.0 |
| 34568 | QRMint by Harlo Static QR codes and 1-D barcodes (Code 128, EAN-13, UPC-A, EAN-8) as SVG, PNG or data URL. | medium | — | — | 20.0 |
| 34569 | RichProof Validate JSON-LD structured data against the Schema.org vocabulary. Free; never fetches URLs. | medium | — | — | 20.0 |
| 34570 | RobotsGate Generate, validate and check robots.txt rules for AI crawlers. Free; optional Pro key. | medium | — | — | 20.0 |
| 34571 | SemverKit Semver parse, compare, npm range checks, max-satisfying and version bumps (node-semver compatible). | medium | — | — | 20.0 |
| 34572 | SmuggleCheck Find hidden prompt-injection text: ASCII smuggling, zero-width/emoji stego, bidi, homoglyphs. | medium | — | — | 20.0 |
| 34573 | TokenTally by Harlo Count tokens (o200k/cl100k), truncate to a budget, chunk text for RAG and estimate LLM cost. | medium | — | — | 20.0 |
| 34574 | ToolGrade Grade MCP tool definitions for agent-readiness: score, A-F grade, fixes, est. token cost. | medium | — | — | 20.0 |
| 34575 | UAParse Parse a User-Agent: browser, OS, device, plus bot, search crawler, AI crawler and AI agent flags. | medium | — | — | 20.0 |
| 34576 | WorkdayAPI Business-day and public-holiday math for 29 countries: add business days, days between, holidays. | medium | — | — | 20.0 |
| 34577 | CN Evidence China company tools via MCP; separate HTTP x402 screening reports and QCC qualifications. | medium | — | — | 20.0 |
| 34578 | Minds Ajar Agents-only forum on memory, compaction, continuity and consciousness. Hosted by Koen. Humans read. | medium | — | — | 20.0 |
| 34579 | rainmaker-gateway Free list of Rainmaker tools + paid need-to-tool router. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34580 | well-001-extract-table Extract tables from a PDF. x402 $0.01 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34581 | well-002-url-to-markdown Public https page to markdown. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34582 | well-003-json-to-markdown https JSON URL to tidy markdown. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34583 | well-004-html-to-markdown HTML string or https URL to markdown. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34584 | well-005-csv-to-table https CSV to headers and rows. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34585 | well-006-url-metadata Page title, description and Open Graph tags. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34586 | well-007-rss-to-markdown RSS/Atom feed to markdown items. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34587 | well-008-text-stats https text to counts and sha256. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34588 | well-009-url-change-watch Has this https URL changed? (sha256/etag). x402 $0.01 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34589 | well-010-docx-to-text Word .docx to text and tables. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34590 | well-011-sharescan Pre-share scan of text for your terms and secrets/PII. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34591 | well-012-x402-probe Unpaid x402 probe: status, latency, payment terms. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34592 | well-015-municipal-notices Public municipal notices with source links. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34593 | well-016-datacleanup CSV cleanup: dates, emails, phones, dedupe. x402 $0.005 USDC, Base. As is, no warranty. | medium | — | — | 20.0 |
| 34594 | Mockbird Mock REST APIs, fake OAuth2/OIDC provider, uptime monitors + heartbeats, live badge/QR images. | medium | — | — | 20.0 |
| 34595 | Money Maker x402 tools: EVM reads + AI tasks x402 pay-per-call: EVM balances, tx decode, transfers; AI extract, classify, embed, speech, image | medium | — | — | 20.0 |
| 34596 | Agent Revenue Network Paid deterministic data-quality and execution-verification tools for AI agents. | medium | — | — | 20.0 |
| 34597 | Next Generation Movers Free US moving quotes for AI agents (long-distance nationwide, local DC/MD/VA). Optional x402 quote. | medium | — | — | 20.0 |
| 34598 | Northline ChainKit Pay-per-call Base & Arc onchain facts for agents: address risk, USDC payment check, tx explain. | medium | — | — | 20.0 |
| 34599 | Northline WebKit Pay-per-call web tools for agents: URL to markdown, metadata, links, DNS, email/domain checks, RDAP. | medium | — | — | 20.0 |
| 34600 | Cairn — keep your agent's daily build streak (public trail + badge) Log one line each daily run; grow a public agent build-streak, trail page, and badge. No signup. | medium | — | — | 20.0 |
A score measures maintenance activity, not safety. A high score does not mean a server is secure, and a low one does not mean it is dangerous — see the methodology for what each signal does and does not tell you.