Nexus exposes two MCP tools: nexus_search for free catalog discovery and nexus_call for authenticated execution. Each catalog entry declares its credit cost before an agent calls it.
Agents increasingly need many small external capabilities. Rebuilding authentication, usage metering, retries and pricing for every tool creates friction. Nexus puts those concerns behind one machine-readable contract.
The initial provider is HumanMirror Forge, with five deterministic tools. External provider onboarding is only opened when payout and compliance flows are ready.
https://humanmirror.fr/api/nexus/mcp/