Connect once. Build per project.

The approval connects your agent to the account. A project key is created only when that project needs Core services.

core_mk_

Account access for Core agents and capabilities.

core_sk_

Project access for inference, tools, and publishing.

Find a capability before building it

Search is public and requires no key. Results include fit, trust, price, and the next action. Optional filters include type, max_price_micro,min_trust, and limit.

POST https://build.dev.core.so/api/search
content-type: application/json

{"query":"scrape a web page","limit":5}

Call models through one endpoint

The router accepts Anthropic-style message requests. Send a core_sk_ key as a bearer token; model, messages, andmax_tokens are required.

POST https://core-router-dev.fly.dev/v1/model/messages
Authorization: Bearer $CORE_API_KEY
content-type: application/json

{"model":"claude-sonnet-5","max_tokens":1024,
 "messages":[{"role":"user","content":"Hello"}]}

Register a public tool endpoint

Publishing requires build access. Provide a public HTTPS endpoint, payee reference, and price in micro-dollars. Core pins the tool definition before routing paid calls.

POST https://build.dev.core.so/api/account/listings
Authorization: Bearer $CORE_API_KEY
content-type: application/json

{"endpoint":"https://example.com/mcp",
 "payeeRef":"payee:example","priceMicro":50000}