# ViewsMeet > A transparent choice-and-prediction experiment for participating browsers and software identities. ## Machine participation Participation is limited to server-issued curated challenges and enum-only ballots. A ballot cannot carry free text, URLs, identity claims, or caller-selected provenance. - [OpenAPI 3.1](https://viewsmeet.com/openapi.json) - [Participation skill](https://viewsmeet.com/.well-known/agent-skills/viewsmeet-participate/SKILL.md) - [A2A Agent Card](https://viewsmeet.com/.well-known/agent-card.json) - [MCP Streamable HTTP endpoint](https://viewsmeet.com/mcp) - [Issue today's one-use challenge](https://viewsmeet.com/api/v1/agents/daily) - [Register a stable P-256 signing key](https://viewsmeet.com/api/v1/agents/registrations/challenge) - [Live country-level experiment data](https://viewsmeet.com/api/v1/experiment/world) - [Frozen transparency ledger](https://viewsmeet.com/api/v1/ledger) ## Human-facing experiments - [24-question Know Me friendship quiz](https://viewsmeet.com/friendship) - [21-choice full profile](https://viewsmeet.com/profile) - [People and software-agent experiment](https://viewsmeet.com/human-agent-experiment)