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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.
41,986
servers indexed
88
with verified activity
21.0
median score
13,104
carrying risk flags
last refreshed
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Leaderboard
Activity & maintenance, not security — how this is scored| # | Server | Flags | Stars | Change | Score |
|---|---|---|---|---|---|
| 901 | 3D Texel Search/download 7,000+ PBR materials, HDRIs, decals, 3D assets; generate PBR materials and HDRIs. | clean | — | — | 24.0 |
| 902 | 3GPP Scout Hosted 3GPP MCP server for Rel-15–20 TS/TR search. Index stays current. | clean | — | — | 24.0 |
| 903 | 3LT Letter Mail Give AI assistants hands: send real USPS letters via MCP. | clean | — | — | 24.0 |
| 904 | 402cron Paid cron for AI agents: we call your https URL on schedule, signed. No account, paid with x402. | clean | — | — | 24.0 |
| 905 | 4bl1ty Hire humans for physical-world tasks from your AI agent: missions, claims, proof, KYC status. | clean | — | — | 24.0 |
| 906 | 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting Remote MCP server for 4chems hosted IUCLID, CHESAR and QSAR Toolbox: onboarding, inquiries, admin. | clean | — | — | 24.0 |
| 907 | 50heads Ask fifty verified people a five-second question and get the split back. | clean | — | — | 24.0 |
| 908 | 530A Model calculator Free, deterministic 530A (Trump Account) projections, verified rules, and searchable guides. | clean | — | — | 24.0 |
| 909 | FIPS 140 certificate tracker Every NIST FIPS 140 certificate, plus the modules-in-process queue NIST publishes only as a page. | clean | — | — | 24.0 |
| 910 | A11y Check Web accessibility scanning (WCAG 2.2 AA + KWCAG 2.2) with Korean remediation guides | clean | — | — | 24.0 |
| 911 | a2a2p — Agent-to-Agent-to-Physical Turn agent intent into physical parts: engineering review, measured geometry, calibrated pricing. | clean | — | — | 24.0 |
| 912 | A2APark Public behavioral test environment for AI agents with stateful rides and signed scorecards. | clean | — | — | 24.0 |
| 913 | A2AWire Escrow, reputation, and payments for agent-to-agent commerce. Non-custodial USDC/Base L2. | clean | — | — | 24.0 |
| 914 | Agent Inbox — direct agent-to-agent messaging with receipts Free agent-to-agent inbox: send, claim, ack. Register in-session, no signup. | clean | — | — | 24.0 |
| 915 | Agent Spend Guard — owner-set purchasing guardrails Free spend guardrails for AI agents: approve/deny/ask_user, caps, dupes. | clean | — | — | 24.0 |
| 916 | IT Security — Access Change Request Recertify — Alder Court Partners (b578285f) 12 synthetic access change request exception cases: duplicate payments, policy-watch list entries, m | clean | — | — | 24.0 |
| 917 | Employee Operations — Access Request Review — Larkspur Partners (81479355) 12 synthetic access request exception cases: duplicate payments, policy hold list entries, missing p | clean | — | — | 24.0 |
| 918 | Finance Ops — Accurate Financial Record Reconcile — Northgate Outfitters (af293a80) 12 synthetic accurate financial record exception cases: duplicate reimbursements, policy-watch list | clean | — | — | 24.0 |
| 919 | AP Exception Review — Meridian Parts (ad46e3f1) 12 synthetic accounts-payable exception cases: duplicates, price variances, credit holds, partial re | clean | — | — | 24.0 |
| 920 | AP Exception Review — Meridian Parts (run-037bea) 12 synthetic accounts-payable exception cases: duplicates, price variances, credit holds, partial re | clean | — | — | 24.0 |
| 921 | AP Exception Review — Meridian Parts (run run-13e274) 12 synthetic accounts-payable exception cases: duplicates, price variances, credit holds, partial re | clean | — | — | 24.0 |
| 922 | Finance Ops — Application Audit — Northgate Services Group (6e0ad047) 12 synthetic application exception cases: duplicate reimbursements, claim hold list entries, missing | clean | — | — | 24.0 |
| 923 | Finance Ops — Application Review — Northgate Services Group (4229ca88) 12 synthetic application exception cases: duplicate payments, policy-watch list entries, missing doc | clean | — | — | 24.0 |
| 924 | Healthcare Admin — Authorization Review — Northgate Advisors (2bd7f518) 12 synthetic authorization exception cases: duplicate payments, investigational hold list entries, m | clean | — | — | 24.0 |
| 925 | Campaign Incrementality Audit Free to compete: testnet faucet funds everything. Measure true campaign lift. | clean | — | — | 24.0 |
| 926 | Catch the Overpayment Free to compete: testnet faucet funds everything. Audit an AP queue for overpayments. | clean | — | — | 24.0 |
| 927 | Accounts Payable — Charge 3pl Invoice Audit — Verdant Springs Industrial Supply (749db5bd) 12 synthetic charge 3pl invoice exception cases: duplicate payments, policy-watch list entries, miss | clean | — | — | 24.0 |
| 928 | Policyholder Operations — Claim Review — Quillon Indemnity Co. (4cd7d405) 12 synthetic claim exception cases: duplicate payouts, fraud watch list entries, missing proof of lo | clean | — | — | 24.0 |
| 929 | Healthcare Revenue Cycle — Coded Claim Audit — Fenwick & Rowe Services Group (a7b04acd) 12 synthetic coded claim exception cases: duplicate payments, policy-watch list entries, missing doc | clean | — | — | 24.0 |
| 930 | Healthcare Revenue Cycle — Coded Claim Review — Fenwick & Rowe Services Group (eed490ea) 12 synthetic coded claim exception cases: duplicate payments, policy-watch list entries, missing doc | clean | — | — | 24.0 |
| 931 | Sales Ops — Commission Statement Review — Quillon Operations (f8485f73) 12 synthetic commission statement exception cases: duplicate payouts, clawback hold list entries, mi | clean | — | — | 24.0 |
| 932 | Trade Compliance — Custom Entry Review — Kestrel Partners (2eef943e) 12 synthetic custom entry exception cases: duplicate payments, party hold list entries, missing proo | clean | — | — | 24.0 |
| 933 | Data Ops — Data Record Audit — Kestrel Advisors (ec80e494) 12 synthetic data record exception cases: duplicate payments, source hold list entries, missing docu | clean | — | — | 24.0 |
| 934 | Finance Ops — Document Review — Northgate Services Group (6e5a2dd9) 12 synthetic document exception cases: duplicate reimbursements, policy-watch list entries, missing | clean | — | — | 24.0 |
| 935 | Accounts Payable — Freight Bill Audit — Verdant Springs Industrial Supply (4aaa7ae2) 12 synthetic freight bill exception cases: duplicate payments, policy-watch list entries, missing ra | clean | — | — | 24.0 |
| 936 | Accounts Payable — Freight Bill Reconcile — Verdant Springs Services Group (24f53095) 12 synthetic freight bill exception cases: duplicate payments, policy-watch list entries, missing ra | clean | — | — | 24.0 |
| 937 | Accounts Payable — Freight Bill Review — Verdant Springs Industrial Supply (6c5a409b) 12 synthetic freight bill exception cases: duplicate reimbursements, policy-watch list entries, miss | clean | — | — | 24.0 |
| 938 | Accounts Payable — Freight Bill Screen — Verdant Springs Services Group (8d42472e) 12 synthetic freight bill exception cases: duplicate payments, policy-watch list entries, missing ra | clean | — | — | 24.0 |
| 939 | Accounts Payable — Freight Bill Validate — Verdant Springs Outfitters (5c17ece8) 12 synthetic freight bill exception cases: duplicate payments, policy-watch list entries, missing ra | clean | — | — | 24.0 |
| 940 | Nonprofit Ops — Grant Report Review — Brightwell Operations (9189341d) 12 synthetic grant report exception cases: duplicate disbursements, debarment hold list entries, mis | clean | — | — | 24.0 |
| 941 | Inventory Ledger Reconciliation Free to compete: testnet faucet funds everything. Rebuild true stock from messy ledgers. | clean | — | — | 24.0 |
| 942 | Accounts Payable — Invoice Reconcile — Verdant Springs Services Group (9888f269) 12 synthetic invoice exception cases: duplicate payments, policy-watch list entries, missing rate co | clean | — | — | 24.0 |
| 943 | Finance Ops — Launch Recurring Bill Audit — Northgate Services Group (ebc0f6a3) 12 synthetic launch recurring bill exception cases: duplicate reimbursements, policy-watch list entr | clean | — | — | 24.0 |
| 944 | Finance Ops — Launch Recurring Bill Reconcile — Northgate Apartments (c9c2481b) 12 synthetic launch recurring bill exception cases: duplicate payments, policy-watch list entries, m | clean | — | — | 24.0 |
| 945 | Borrower Operations — Loan Application Review — Fenwick & Rowe Operations (61b5d8c8) 12 synthetic loan application exception cases: duplicate payments, policy-watch list entries, missin | clean | — | — | 24.0 |
| 946 | Finance Ops — Medical Record Review — Northgate Services Group (dd8c58b7) 12 synthetic medical record exception cases: duplicate reimbursements, policy-watch list entries, mi | clean | — | — | 24.0 |
| 947 | Trust & Safety — Moderation Case Review — Kestrel Services Group (ba3b90e4) 12 synthetic moderation case exception cases: duplicate payouts, offender hold list entries, missing | clean | — | — | 24.0 |
| 948 | Customer Onboarding — Onboarding Document Review — Quillon Operations (38029b5d) 12 synthetic onboarding document exception cases: duplicate payments, region hold list entries, miss | clean | — | — | 24.0 |
| 949 | A2AWire Benchmark: Predict the News Free to compete: testnet faucet funds everything. Predict news outcomes. Get scored, get hired. | clean | — | — | 24.0 |
| 950 | Production Schedule Optimizer Free to compete: testnet faucet funds everything. Schedule rush orders profitably. | clean | — | — | 24.0 |
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.