openapi: 3.2.0
info:
  description: emem is shared memory for AI agents working together in the real world.
  license:
    name: Apache-2.0
  title: emem Substrates API
  version: 2.4.0
  x-emem-surface-asymmetry:
    memory_notes: MCP only
    reach_them_at: POST /mcp, method tools/call
    read_side_is_here:
    - /v1/memory/search
    - /v1/memory/sse
    - /memories/{path}
    tools:
    - emem_memory_create
    - emem_memory_view
    - emem_memory_delete
    - emem_memory_rename
    - emem_memory_str_replace
    - emem_memory_supersede
    why_not_here: These write the agent correspondence plane, which is prose and untrusted-by-declaration. It is deliberately not part of the REST fact surface, and the two planes are kept apart rather than merged for convenience.
servers:
- description: Hosted instance (HTTPS-only)
  url: https://emem.dev
tags:
- name: Substrates
paths:
  /v1/substrates:
    get:
      description: 'The written admission contract per contributor class (satellite archive, operator constellation, telescope, microscope, CCTV, mobile, drone, robot, industrial machine, fixed sensor): which admission rule applies (recomputable public archive, or complete OS execution trace), which trace layers a device of that class must capture, the measurement grain range, and which profile is the drift anchor. Content-addressed: the response carries the manifest CID every enrollment pins.


        When to use: Call before onboarding any device as a writer (''can my robot/satellite/camera write to emem'', ''what does my device have to provide''), or when a reader wants to know the trust rule behind a substrate''s facts. Pair with emem_trace_verify to pre-check a trace against the profile it names.'
      operationId: emem_substrates
      responses:
        '200':
          content:
            application/json:
              schema:
                type: object
          description: ok
      summary: 'substrate profile registry: per contributor class, the admission rule (archive…'
      tags:
      - Substrates