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MCP servers over stdio

An MCP server is something you connect an agent to. The registry will tell you a server's name, its version and how to reach it — but not what it can do, which is the only thing you actually want to know. We read that off the repository.

31,279 servers, 76,670 tool names across 6,537 of them, last read 11 September 2026.

How you run it
anyremotelocalboth
Transport
anystreamable-httpssestdio
Tools
anyknown

A server's tools are not in the registry. We read them from the repository README, which means a list here is what the README documented and an absence is usually silence rather than a server with nothing to offer: 20.9% of servers have a list, and filtering on tools narrows to those. Where a list exists, the page for the server says which part of the README it came from.

  1. impreza-mcpio.github.imprezahost
  2. agentosio.github.imran-siddique
  3. tickerrio.github.imviky-ctrl
  4. xrechnung-mcpio.github.imysfylmz
  5. cowork-qaio.github.inSideos-designs · 5 tools
  6. inam-mcpio.github.inamprotocol
  7. inavi-mcpio.github.inavi-systems · 4 tools
  8. imageatio.github.incendies · 3 tools
  9. index365io.github.index365usa
  10. mcpio.github.index9-org · 5 tools
  11. razorpayio.github.indiamcp · 14 tools
  12. uniprofio.github.indragiek
  13. iaiopsio.github.industrial-aiops
  14. iaiops-energyio.github.industrial-aiops
  15. fattlyio.github.industriesfatty-spec
  16. vulnfeedio.github.infai-tech · 9 tools
  17. mcp-ezpathio.github.infiniteezverse
  18. code-contextio.github.infino-ai
  19. mcp-serverio.github.infino-ai · 15 tools
  20. inflectiv-mcp-serverio.github.inflectiv
  21. unlocalhostio.github.info-arnav
  22. dns-aidio.github.infobloxopen
  23. mcp-browser-researchio.github.infoinlet-marketplace
  24. mcp-calendario.github.infoinlet-marketplace
  25. mcp-clickhouseio.github.infoinlet-marketplace
  26. mcp-codeauditio.github.infoinlet-marketplace
  27. mcp-dataio.github.infoinlet-marketplace
  28. mcp-elasticsearchio.github.infoinlet-marketplace
  29. mcp-emailio.github.infoinlet-marketplace
  30. mcp-fetchio.github.infoinlet-marketplace
  31. mcp-filesystemio.github.infoinlet-marketplace
  32. mcp-gitio.github.infoinlet-marketplace
  33. mcp-githubio.github.infoinlet-marketplace
  34. mcp-imageio.github.infoinlet-marketplace
  35. mcp-jp-doc-intelio.github.infoinlet-marketplace
  36. mcp-kafkaio.github.infoinlet-marketplace
  37. mcp-knowledge-ragio.github.infoinlet-marketplace
  38. mcp-memoryio.github.infoinlet-marketplace
  39. mcp-mongodbio.github.infoinlet-marketplace
  40. mcp-mysqlio.github.infoinlet-marketplace
  41. mcp-notionio.github.infoinlet-marketplace
  42. mcp-observabilityio.github.infoinlet-marketplace
  43. mcp-openapiio.github.infoinlet-marketplace
  44. mcp-postgres-nl-queryio.github.infoinlet-marketplace
  45. mcp-qdrantio.github.infoinlet-marketplace
  46. mcp-redisio.github.infoinlet-marketplace
  47. mcp-s3io.github.infoinlet-marketplace
  48. mcp-socialio.github.infoinlet-marketplace
  49. mcp-stripeio.github.infoinlet-marketplace
  50. mcp-timeio.github.infoinlet-marketplace
  51. mcp-translateio.github.infoinlet-marketplace
  52. mcp-workflowio.github.infoinlet-marketplace
  53. legal-geio.github.infolegalge
  54. agent-guardio.github.infraveilhq
  55. control-planeio.github.infraveilhq
  56. ingeroio.github.ingero-io
  57. mcp-serverio.github.ingressward
  58. mcp-execio.github.inhuman
  59. mcp-k8s-ephemeral-jobio.github.inhuman · 2 tools
  60. mcp-ssh-fleetio.github.inhuman
  61. agentstack-mcpio.github.inity13
  62. decisionmatrix-mcpio.github.inity13
  63. precisioncalc-mcpio.github.inity13
  64. scenariosim-mcpio.github.inity13
  65. inkogio.github.inkog-io · 7 tools
  66. symbolio.github.inotakeh
  67. mcp-defectdojoio.github.inspicere · 24 tools
  68. inssist-mcpio.github.inssist
  69. instagitio.github.instagitai
  70. rankcli-mcp-serverio.github.integrallis
  71. turbopentestio.github.integsec · 12 tools
  72. router-mcpio.github.intelli-verse-x
  73. idf-mcpio.github.intent-driven-software · 3 tools
  74. intenttext-mcpio.github.intenttext
  75. intlpullio.github.intlpull
  76. mcp-server-zotero-devio.github.introfini
  77. invapi-mcpio.github.invapi-org · 14 tools
  78. invigilio.github.invigil
  79. obolusio.github.inviti8
  80. tacitus-mcp-serverio.github.ionasrobert · 24 tools
  81. ionoscloud-mcpio.github.ionos-cloud
  82. adios-mcpio.github.iowarp
  83. arxiv-mcpio.github.iowarp
  84. chronolog-mcpio.github.iowarp
  85. compression-mcpio.github.iowarp
  86. darshan-mcpio.github.iowarp
  87. geo-mcpio.github.iowarp
  88. geojson-mcpio.github.iowarp
  89. hdf5-mcpio.github.iowarp
  90. jarvis-mcpio.github.iowarp
  91. lmod-mcpio.github.iowarp
  92. ndp-mcpio.github.iowarp
  93. node-hardware-mcpio.github.iowarp
  94. pandas-mcpio.github.iowarp
  95. parallel-sort-mcpio.github.iowarp
  96. paraview-mcpio.github.iowarp
  97. parquet-mcpio.github.iowarp
  98. plot-mcpio.github.iowarp
  99. sac-mcpio.github.iowarp
  100. scientific-catalog-mcpio.github.iowarp
  101. seismic-mcpio.github.iowarp
  102. slurm-mcpio.github.iowarp
  103. spack-mcpio.github.iowarp
  104. terrain-mcpio.github.iowarp
  105. web-mcpio.github.iowarp
  106. mcp-ip2location-ioio.github.ip2location · 1 tools
  107. mcp-ip2whoisio.github.ip2whois · 2 tools
  108. agent-guardio.github.ipezygj
  109. evalgateio.github.ipezygj
  110. numguardio.github.ipezygj
  111. mcpio.github.ipinfo
  112. proxy-toolkitio.github.ipvolt
  113. 429-throttle-mcpio.github.iqingyoung
  114. search2chart-mcpio.github.iqingyoung
  115. bing-search-freeio.github.iridite
  116. mcp-serverio.github.iris-eval · 1 tools
  117. memoryguardio.github.irisxc4
  118. argusio.github.ironclawdevs27 · 9 tools
  119. mcpio.github.ironflowsh
  120. secret-safe-envio.github.irrenwill
  121. forageio.github.isaac-levine · 6 tools
  122. venunite-eventsio.github.isaacaskew
  123. spikemeio.github.isaacviannadev
  124. codeofpaperio.github.isagelswann
  125. kolada-mcpio.github.isakskogstad
  126. mulmocast-visionio.github.isamu
  127. mcpio.github.isco-tec · 9 tools
  128. mcp_weather_serverio.github.isdaniel
  129. pgtuner_mcpio.github.isdaniel · 16 tools
  130. e-arveldaja-mcpio.github.iseppo
  131. mycrab-mcpio.github.isgudtek · 4 tools
  132. dicepdfio.github.ishan-maheshwari
  133. memstackio.github.isiomaC
  134. cotforce-mcpio.github.islobodan
  135. cruncher-mcpio.github.islobodan · 43 tools
  136. mcp-serverio.github.issuecapture
  137. dt-mcpio.github.istefox
  138. stackguide-mcpio.github.isucorp-taimiralain
  139. mcpio.github.itcons-app · 17 tools
  140. feedlioio.github.itechsoftsolution16
  141. mcp-serverio.github.itmplatform
  142. jira-admin-mcpio.github.its-qusai-nasr
  143. mcp-serverio.github.itsconvo · 15 tools
  144. craftstory-mcpio.github.itseez3d
  145. cloudflareio.github.itunified-io
  146. opnsenseio.github.itunified-io
  147. postgresio.github.itunified-io
  148. tailscaleio.github.itunified-io
  149. gpt-image-2-polza-mcp-serverio.github.ivanantigravity-lgtm
  150. model-council-mcp-serverio.github.ivanantigravity-lgtm · 4 tools
  151. nanobanana-2-polzaia-mcp-serverio.github.ivanantigravity-lgtm
  152. perplexity-polza-mcp-serverio.github.ivanantigravity-lgtm
  153. seedance-polza-mcp-serverio.github.ivanantigravity-lgtm · 4 tools
  154. walletapio.github.ivangr1 · 23 tools
  155. primer-mcpio.github.ivanlai · 15 tools
  156. lucius-mcpio.github.ivanostanin
  157. ratchetio.github.iversonwuwei
  158. iweio.github.iwe-org
  159. codebase-synapseio.github.iwiels
  160. btcmcpio.github.iworkist
  161. avcsio.github.izagood
  162. openclaw-registryio.github.izworskic · 4 tools
  163. codewiki-mcpio.github.izzzzzi
  164. iz-tolk-mcpio.github.izzzzzi · 4 tools
  165. pixel-surgeonio.github.j-east · 10 tools
  166. code-assistantio.github.j0hanz · 13 tools
  167. code-lensio.github.j0hanz · 13 tools
  168. code-review-analystio.github.j0hanz · 13 tools
  169. cortex-mcpio.github.j0hanz · 1 tools
  170. fetch-url-mcpio.github.j0hanz · 1 tools
  171. filesystem-contextio.github.j0hanz · 11 tools
  172. filesystem-mcpio.github.j0hanz · 11 tools
  173. memory-mcpio.github.j0hanz
  174. superfetchio.github.j0hanz · 1 tools
  175. mtg-mcp-serverio.github.j4th · 67 tools
  176. nexus-mcpio.github.j7an · 18 tools
  177. RokuMCPio.github.jack1590 · 38 tools
  178. aigroup-mdtoword-mcpio.github.jackdark425 · 2 tools
  179. aruba-emailio.github.jackfioru92
  180. scope-mcpio.github.jackgillen15-dev · 5 tools
  181. pullpush-mcpio.github.jacklenzotti · 2 tools
  182. sic-codesio.github.jackmmaher
  183. scan-mcpio.github.jacksenechal · 8 tools
  184. megalaunch-mcpio.github.jacksun911 · 6 tools
  185. formbroio.github.jackyzhang69
  186. usefilloio.github.jacobfunch
  187. djd-agent-scoreio.github.jacobsd32-cpu · 9 tools
  188. cachetank-mcpio.github.jacobsilver7-art
  189. index-serverio.github.jagilber-org
  190. memoio.github.jagoff
  191. sec-intelligence-mcpio.github.jahanv01
  192. bus-mcpio.github.jaimenbell · 6 tools
  193. desktop-mcpio.github.jaimenbell
  194. discord-mcpio.github.jaimenbell · 12 tools
  195. github-mcpio.github.jaimenbell
  196. mcp-factoryio.github.jaimenbell
  197. rag-mcpio.github.jaimenbell
  198. rails-mcpio.github.jaimenbell
  199. vllm-ops-mcpio.github.jaimenbell
  200. font-proof-mcpio.github.jakefleming · 3 tools

Back to the index

Live servers only. The whole corpus is one call away through the search API — including tools=, which is how you ask for a server by what it does rather than by what it is called.