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APIs, MCP and payments for developers and AI agents building on Zero Authority and Nova.

Zero Authority and Nova1 min readMarkdown

In short

Read Zero Authority data over its REST API, give an AI agent Nova's tools over MCP or REST, and pay per call with x402. No API key needed for Nova Tools.

Zero Authority API

Zero Authority's public data (bounties, gigs, creators, quests, governance) is available over REST.

Reference: zeroauthoritydao.com/api-docs
OpenAPI spec: zeroauthoritydao.com/openapi-spec.yaml
Base URL: https://zeroauthoritydao.com/api

The tools Nova uses in chat are open to people and agents. Free tools are rate-limited; paid tools are paid per call with x402 in STX, sBTC or USDCx on Stacks. No API keys, no subscriptions, no registration.

MCP server: https://nova.zeroauthoritydao.com/mcp
Agent manifest: nova.zeroauthoritydao.com/.well-known/agent.json
OpenAPI: nova.zeroauthoritydao.com/api/tools/openapi.json
Browse and try them: Nova Tools

Start with Using Nova Tools with AI agents and the x402 payment guide.

These docs, for agents

Every page as markdown: add .md to its URL, or send Accept: text/markdown
Index of all pages: /llms.txt, every page in one file: /llms-full.txt
Machine-readable index: /docs/index.json
Search: GET /api/docs/search?q=your+question

In this section

Using Nova Tools with AI AgentsExplains how AI agents connect to Nova Tools over MCP or REST, discover tools, which callers pay per call with x402, and the rate limits for identified and anonymous agents.x402 Payment Integration GuideExplains how paying for Nova Tools with x402 works: the three payment headers, the 402 flow step by step, STX, sBTC and USDCx on Stacks mainnet, error codes and the AIBTC facilitator.