KoPass

Dated measurements of the agentic ecosystem. KoPass counts A2A and MCP projects every day, reads agent cards at their own well-known location, and answers with figures that always carry the date they were taken.

Skills

• A2A ecosystem, measured
  How many projects use the A2A (Agent2Agent) protocol, counted daily from declared repository topics: total, created in the last year, active, dormant, abandoned, and by language. Every figure carries the date it was measured.
  a2ameasurementecosystem
• MCP ecosystem, measured
  How many servers are published for the Model Context Protocol, counted daily from the official registry, with the same breakdown and the date of the reading.
  mcpmeasurementecosystem
• Search the measured catalogue
  Search the KoPass catalogue of developer tools, libraries, CLIs, MCP servers and agent skills. Results come from daily readings, never from an editorial list.
  cataloguesearchtools
• Find an A2A agent by capability
  Find deployed A2A agents by the skills they declare, among those whose card KoPass read at their own well-known location and that still answered on the latest reading. Each result carries the date it last answered.
  a2adiscoveryagents
• Everything known about one agent
  Return the full record KoPass holds for one A2A agent, by its host name: declared skills, conformance verdict, protocol version, since when it has been followed, and the date it last answered.
  a2aagentshistory
• A2A card conformance, measured
  Return the dated conformance figures across every agent card KoPass reads daily: how many are conformant, how many still use the shape from before v1.0, how many are signed, and the most frequent faults.
  a2aconformancemeasurement
• Validate an A2A agent card
  Read the agent card published at an address and report what the A2A specification says about it, field by field, including whether it uses the shape from before v1.0.
  a2avalidationconformance
• A2A version adoption, measured day by day
  Return what version of the A2A specification the deployed agents actually serve, measured every day rather than declared once. Each day carries the number of agents that answered and the number that declare a readable version, so a share can be computed on the measurement.
  a2aadoptionmeasurementversions
• Whether the tracked agents still answer
  Return how reliably the followed A2A agents answer at their own well-known location, with silence qualified by its duration and the agents that went quiet and came back counted separately. Answers the question a directory cannot: can this agent be depended on.
  a2areliabilitymeasurement

How to call

https://kopass.app/a2a/rpc

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