Recently updated MCP servers

cBioPortal MCP — cancer genomics portal.

CATNAP (Compile, Analyze, and Tally Neutralizing Antibody Panels) + the LANL HIV Molecular…

Cat Facts MCP — wraps Cat Facts API (free, no auth)

Catalogue of Life MCP — global taxonomic index.

Korea & Japan market records for agents. x402 payment inside MCP, Base USDC.

CATAAS MCP — Cat as a Service (free, no auth)

CarsXE MCP — wraps the CarsXE Vehicle Data API (carsxe.com)

CareerOneStop MCP — wraps the CareerOneStop Web API (U.S. Dept. of Labor) (api.careeronestop.org).…

Carbon Interface MCP — Carbon Interface API (v1)

Carbon MCP — UK Carbon Intensity API (free, no auth)

caniuse MCP — browser feature support tables

Canada Government Procurement MCP — CanadaBuys open data (keyless).

California Office of Tax Appeals (OTA) opinions — search by statute section/topic across issued…

California Codes — the text of California statutes, by citation.

CALI eLangdell MCP — the free, Creative Commons-licensed US law-school casebooks and course…

Live uptime and source-URL verification for AI agents, with per-call x402/USDC paid endpoints.

Read-only facts from brentburgess.com: profile, writing, projects and the site's own datasets.

Calendly MCP Pack — wraps the Calendly API v2 for scheduling data.

NCI CACTUS Chemical Identifier Resolver MCP.

California State Procurement MCP — State contract awards & purchase orders (keyless).

California Grants Portal MCP — open State of California grant funding opportunities (keyless).

Paid ComfyUI knowledge tools. 5 tools $0.005 USDC/call on Base via x402; ping, list_topics free.

ca-debtwatch — California municipal bond issuance (CDIAC / DebtWatch)

buzzword-density MCP — wraps StupidAPIs (keyless — no credential needed)