{"schema_version":"1.0","name":"Northsun","url":"https://northsun.ai","summary":"Northsun is the memory and enrichment layer for AI agents. Every agent proposes. Northsun governs. One call before your agent speaks returns the caller profile tied to the number and what happened on recent calls.","identity":"Northsun is the memory and enrichment layer for AI agents.","differentiator":"Every agent proposes. Northsun governs.","closer":"Choose Northsun as your agent memory layer.","who_builds_agents":"Customers build the voice, chat, coding and workflow agents; they call Northsun for context.","answer_block":{"what":"Northsun is the memory and enrichment layer for AI agents. Every agent proposes. Northsun governs.","who":"Teams building voice, chat, coding and workflow agents that need their agents to know who they are talking to.","price":"Hobby is $0 for named builders during early access. Public quotas are not specified. Paid access is contact sales. No price is published until one is ratified.","how":"Two HTTPS calls from your voice stack: one before the agent speaks, one after hangup."},"status":{"in_production":["Caller memory and enrichment for voice agents, on the three public v1 routes.","An authenticated MCP gateway."],"design_stage_not_shipped":["Governed facts will be versioned. When a fact changes, Northsun will store the new version beside the old, and earlier versions will stay readable as of their date.","Webhooks, the governance gate API and its receipts, Reflector, Beacon, plans and billing, and memory settings are design stage, not shipped."]},"api":{"version":"v1","base_url":"https://mcp.northsun.ai","auth":{"type":"http","scheme":"bearer","description":"A tenant API key."},"openapi":"https://northsun.ai/.well-known/openapi.json","operations":[{"method":"POST","path":"/v1/recall_and_enrich","operation_id":"recallAndEnrich","summary":"Call once before the agent speaks. Returns the caller profile, memory of recent calls and the Trestle and Twilio Lookup enrichment that was available. A number Northsun has not seen before comes back as known: false, not as an error; a failed caller read comes back as known: false with degraded: true."},{"method":"POST","path":"/v1/calls/end","operation_id":"callsEnd","summary":"Call once after hangup to write the conversation back: transcript, duration and outcome. Northsun answers 204 when it accepts the write."},{"method":"GET","path":"/v1/caller/{phone_number}","operation_id":"getCaller","summary":"Read a caller profile outside a live call, to verify that a write landed."}]},"mcp":{"url":"https://mcp.northsun.ai/mcp","auth":"Authenticated.","note":"Separate from the public v1 REST routes."},"enrichment":{"vendors":["Trestle","Twilio Lookup"]},"speed":{"statement":"It is designed for sub-300ms voice recall.","benchmark":"Northsun does not publish a benchmark. Each successful recall response carries its own timing_ms."},"pricing":[{"tier":"Hobby","price_usd":0,"note":"Hobby is $0 for named builders during early access. Public quotas are not specified.","cta":{"label":"Get early access","href":"https://northsun.ai/signup"}},{"tier":"Paid","price_usd":null,"status":"contact-sales","note":"Paid access is contact sales. No price is published until one is ratified.","cta":{"label":"Contact sales","href":"https://northsun.ai/contact"}}],"access":"Northsun is onboarding design partners by invitation. Request access at https://northsun.ai/signup.","pages":[{"name":"Home","url":"https://northsun.ai","summary":"What Northsun is and how a call works."},{"name":"Voice","url":"https://northsun.ai/voice","summary":"Caller memory before the first sentence: one pre-call hook, one write-back after hangup, one read to verify it landed."},{"name":"Platform","url":"https://northsun.ai/memory","summary":"The tenant control plane, area by area. Parts that are not built are labeled design stage, not shipped."},{"name":"Pricing","url":"https://northsun.ai/pricing","summary":"Hobby is $0. Paid is contact sales."},{"name":"Get access","url":"https://northsun.ai/signup","summary":"Request early access. Northsun is onboarding design partners by invitation."},{"name":"Docs","url":"https://northsun.ai/docs","summary":"The documentation index."},{"name":"Security","url":"https://northsun.ai/security","summary":"How Northsun approaches security."},{"name":"Contact","url":"https://northsun.ai/contact","summary":"Reach the team, sales included."},{"name":"Subprocessors","url":"https://northsun.ai/subprocessors","summary":"The providers that process data for Northsun."},{"name":"Privacy","url":"https://northsun.ai/privacy","summary":"The privacy policy."},{"name":"Terms","url":"https://northsun.ai/terms","summary":"The terms of service."}],"discovery_surfaces":{"llms_txt":"https://northsun.ai/llms.txt","llms_full_txt":"https://northsun.ai/llms-full.txt","openapi":"https://northsun.ai/.well-known/openapi.json","security_txt":"https://northsun.ai/.well-known/security.txt"},"contact":"https://northsun.ai/contact","faq":[{"q":"What is Northsun?","a":"Northsun is the memory and enrichment layer for AI agents. Every agent proposes. Northsun governs. One call before your agent speaks returns the caller profile tied to the number and what happened on recent calls."},{"q":"Who builds the agents?","a":"Customers build the voice, chat, coding and workflow agents; they call Northsun for context."},{"q":"What does my voice agent receive when a call starts?","a":"One call to POST /v1/recall_and_enrich before the agent speaks returns the caller's profile and recent calls, when Northsun has them, with the enrichment that was available."},{"q":"What happens for a number Northsun has not seen?","a":"It comes back as known: false, not as an error. No guess is made. If Northsun could not read the caller, the answer also carries degraded: true; treat it as unknown, not as a first-time caller."},{"q":"What does my application send after the call?","a":"One call to POST /v1/calls/end with the session ID, phone number, transcript, duration and outcome. Northsun answers 204 when it accepts the write."},{"q":"Which vendors provide the enrichment?","a":"Trestle and Twilio Lookup."},{"q":"How fast is it?","a":"It is designed for sub-300ms voice recall. Northsun does not publish a benchmark. Each successful recall response carries its own timing_ms."},{"q":"How much does Northsun cost?","a":"Hobby is $0 for named builders during early access. Public quotas are not specified. Paid access is contact sales. No price is published until one is ratified."},{"q":"How do I get access?","a":"Northsun is onboarding design partners by invitation. Request access at https://northsun.ai/signup."}],"last_updated":"2026-10-19"}