Letta · Capability

Letta API — Sandboxes

Sandboxes — manage code-execution sandboxes used by sandbox tools. 3 operations. Lead operation: Create Sandbox. Self-contained Naftiko capability covering one Letta business surface.

Letta API — Sandboxes is a Naftiko capability published by Letta, one of 36 capabilities the APIs.io network indexes for this provider. It bundles 3 operations across the POST and GET methods rooted at /v1/sandboxes.

The capability includes 1 read-only operation and 2 state-changing operations. Lead operation: Create Sandbox. Can be deployed as a REST endpoint, MCP tool, or Agent Skill via Naftiko.

Tagged areas include Letta, Stateful Agents, and Sandboxes.

Run with Naftiko LettaStateful AgentsSandboxes

What You Can Do

POST
Sandboxes_createsandbox — Create Sandbox
/v1/sandboxes
GET
Sandboxes_listsandboxes — List Sandboxes
/v1/sandboxes
POST
Sandboxes_terminatesandbox — Terminate Sandbox
/v1/sandboxes/{sandboxId}/terminate

MCP Tools

create-sandbox

Create Sandbox

list-sandboxes

List Sandboxes

read-only idempotent
terminate-sandbox

Terminate Sandbox

Capability Spec

letta-sandboxes.yaml Raw ↑
naftiko: "1.0.0-alpha2"

info:
  label: "Letta API — Sandboxes"
  description: >-
    Sandboxes — manage code-execution sandboxes used by sandbox tools. 3 operations. Lead operation: Create Sandbox. Self-contained Naftiko capability covering one Letta business surface.
  tags:
    - Letta
    - Stateful Agents
    - Sandboxes
  created: "2026-05-08"
  modified: "2026-05-22"

binds:
  - namespace: env
    keys:
      LETTA_API_KEY: LETTA_API_KEY

capability:

  consumes:
    - type: http
      namespace: "letta-sandboxes"
      baseUri: "https://api.letta.com"
      description: "Letta API — Sandboxes business capability. Self-contained, no shared references."
      authentication:
        type: bearer
        token: "{{env.LETTA_API_KEY}}"
      resources:
        - name: "sandboxes"
          path: "/v1/sandboxes"
          operations:
            - name: "sandboxes_createsandbox"
              method: POST
              description: "Create Sandbox"
              inputParameters:
                - name: "body"
                  in: body
                  type: object
                  required: true
                  description: "Body"
              outputRawFormat: json
              outputParameters:
                - name: result
                  type: object
                  value: "$."
            - name: "sandboxes_listsandboxes"
              method: GET
              description: "List Sandboxes"
              inputParameters:
                - name: "agentId"
                  in: query
                  type: string
                  required: false
                  description: "agentId parameter"
                - name: "limit"
                  in: query
                  type: string
                  required: false
                  description: "limit parameter"
              outputRawFormat: json
              outputParameters:
                - name: result
                  type: object
                  value: "$."
        - name: "sandboxes-by-id-terminate"
          path: "/v1/sandboxes/{sandboxId}/terminate"
          operations:
            - name: "sandboxes_terminatesandbox"
              method: POST
              description: "Terminate Sandbox"
              inputParameters:
                - name: "sandboxId"
                  in: path
                  type: string
                  required: true
                  description: "sandboxId parameter"
                - name: "body"
                  in: body
                  type: object
                  required: true
                  description: "Body"
              outputRawFormat: json
              outputParameters:
                - name: result
                  type: object
                  value: "$."

  exposes:
    - type: rest
      namespace: "letta-sandboxes-rest"
      port: 8080
      description: "REST adapter for Letta API — Sandboxes. One Spectral-compliant resource per consumed operation."
      resources:
        - path: "/v1/sandboxes"
          name: "sandboxes"
          description: "REST surface for sandboxes."
          operations:
            - method: POST
              name: "sandboxes_createsandbox"
              description: "Create Sandbox"
              call: "letta-sandboxes.sandboxes_createsandbox"
              with:
                "body": "rest.body"
              outputParameters:
                - type: object
                  mapping: "$."
            - method: GET
              name: "sandboxes_listsandboxes"
              description: "List Sandboxes"
              call: "letta-sandboxes.sandboxes_listsandboxes"
              with:
                "agentId": "rest.agentId"
                "limit": "rest.limit"
              outputParameters:
                - type: object
                  mapping: "$."
        - path: "/v1/sandboxes/{sandboxId}/terminate"
          name: "sandboxes-by-id-terminate"
          description: "REST surface for sandboxes-by-id-terminate."
          operations:
            - method: POST
              name: "sandboxes_terminatesandbox"
              description: "Terminate Sandbox"
              call: "letta-sandboxes.sandboxes_terminatesandbox"
              with:
                "sandboxId": "rest.sandboxId"
                "body": "rest.body"
              outputParameters:
                - type: object
                  mapping: "$."
    - type: mcp
      namespace: "letta-sandboxes-mcp"
      port: 9090
      transport: http
      description: "MCP adapter for Letta API — Sandboxes. One verb-noun tool per consumed operation."
      tools:
        - name: "create-sandbox"
          description: "Create Sandbox"
          hints:
            readOnly: false
            destructive: false
            idempotent: false
          call: "letta-sandboxes.sandboxes_createsandbox"
          with:
            "body": "tools.body"
          outputParameters:
            - type: object
              mapping: "$."
        - name: "list-sandboxes"
          description: "List Sandboxes"
          hints:
            readOnly: true
            destructive: false
            idempotent: true
          call: "letta-sandboxes.sandboxes_listsandboxes"
          with:
            "agentId": "tools.agentId"
            "limit": "tools.limit"
          outputParameters:
            - type: object
              mapping: "$."
        - name: "terminate-sandbox"
          description: "Terminate Sandbox"
          hints:
            readOnly: false
            destructive: false
            idempotent: false
          call: "letta-sandboxes.sandboxes_terminatesandbox"
          with:
            "sandboxId": "tools.sandboxId"
            "body": "tools.body"
          outputParameters:
            - type: object
              mapping: "$."