List workflow MCP servers

GET/api/v2/workflow-mcp-servers

List MCP servers that expose deployed workflows to external clients. Use List MCP servers for external servers Sim calls. Requires workspace read access. Tool names share a 2,000-name page limit; when toolNamesTruncated is true, toolCount and toolNames may be incomplete. Use List workflow MCP tools for a server’s bounded inventory. Workspace API keys return 403; use a personal API key or scoped OAuth token.

OAuth scope: api:read.

Authentication

Send a personal or workspace API key in X-API-Key. See key types and access; operations that reject workspace keys say so in their description.

Send X-API-Key in the request header.

Alternatively

Send a Sim OAuth access token in Authorization: Bearer. See OAuth authentication and scopes.

Authorization: Bearer YOUR_ACCESS_TOKEN

Required scopes: api:read

OAuth flows

json

{
  "authorizationCode": {
    "authorizationUrl": "https://www.sim.ai/api/auth/oauth2/authorize",
    "tokenUrl": "https://www.sim.ai/api/auth/oauth2/token",
    "refreshUrl": "https://www.sim.ai/api/auth/oauth2/token",
    "scopes": {
      "api:read": "Read your workspaces, workflows, files, tables, and logs",
      "api:write": "Read, create, change, run, and delete resources in your workspaces",
      "offline_access": "Stay signed in without asking again"
    }
  }
}

OAuth scope: api:read.

Query parameters

workspaceIdstringRequired

Workspace whose workflow MCP servers to list.

minLength: 1
maxLength: 128

sortBystring

Field used to sort the result. Do not rely on case-insensitive ordering when sorting by name.

default: createdAt
enum: ["name","createdAt","updatedAt"]

sortOrderstring

Sort direction.

default: desc
enum: ["asc","desc"]

limitinteger

Maximum workflow-MCP servers to return per page. Must be a whole number from 1 to 100. Defaults to 50.

default: 50
minimum: 1
maximum: 100

cursorstring

Opaque cursor from the previous page. Send it back with the same sort and filters; only limit may change. Change anything else and pagination must restart without a cursor.

minLength: 1

Responses

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A page of workflow MCP servers.

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object

A page of workflow MCP servers with bounded tool-name inventories.

3 fields

dataarrayRequired

Items in the current page.

Schema details

Array itemobject

A workflow MCP server and its bounded tool-name inventory.

9 fields

idstringRequired

Unique workflow-MCP server identifier.

namestringRequired

Server display name, shown to connecting MCP clients.

descriptionvalueRequired

Optional server description, or null when unset.

Schema details

Any of

Option 1string

Option 2null

isPublicbooleanRequired

Whether the server answers MCP clients without a Sim API key.

mcpServerUrlstringRequired

MCP client endpoint. Use this returned URL instead of constructing one.

createdAtstringRequired

ISO 8601 timestamp when the server was created.

format: date-time

updatedAtstringRequired

ISO 8601 timestamp when the server was last modified.

format: date-time

toolCountintegerRequired

Number of returned tool names for this server. It may undercount registrations when the page’s toolNamesTruncated flag is true.

minimum: 0
maximum: 9007199254740991

toolNamesarrayRequired

Returned registered tool names, ordered alphabetically. The list may be incomplete when toolNamesTruncated is true.

Schema details

Array itemstring

Additional properties are not allowed.

nextCursorvalueRequired

Opaque cursor for the next page. Send it back as cursor; null means there are no more pages. Do not construct a cursor yourself.

Schema details

Any of

Option 1string

Option 2null

toolNamesTruncatedbooleanRequired

Whether the page-wide tool-name limit left some inventories incomplete. Use List workflow MCP tools for one server and check its truncated flag before treating the inventory as complete. nextCursor paginates servers, not tool names.

Additional properties are not allowed.

Response example 1

json

{
  "data": [
    {
      "id": "wfmcp_01J8ZK3QW4M6X2R9T7B5C0V2",
      "name": "Support agents",
      "description": "Ticket triage and escalation workflows.",
      "isPublic": false,
      "mcpServerUrl": "https://www.sim.ai/api/mcp/serve/wfmcp_01J8ZK3QW4M6X2R9T7B5C0V2",
      "createdAt": "2026-06-12T10:30:00.000Z",
      "updatedAt": "2026-06-12T10:30:00.000Z",
      "toolCount": 1,
      "toolNames": [
        "triage_ticket"
      ]
    }
  ],
  "nextCursor": null,
  "toolNamesTruncated": false
}

Response headers

X-RateLimit-Limitinteger

Maximum requests allowed in the current window.

minimum: 0
maximum: 9007199254740991

X-RateLimit-Remaininginteger

Requests remaining in the current window.

minimum: 0
maximum: 9007199254740991

X-RateLimit-Resetstring

ISO 8601 timestamp when the current rate-limit window resets.

format: date-time
pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$

The request is invalid. This includes a query parameter sent with no value (?limit=, ?search=), which is rejected rather than read as zero, empty, or the parameter default — omit the parameter instead.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "BAD_REQUEST",
    "message": "Invalid request"
  }
}

The API credential is missing or invalid.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Authentication required"
  }
}

The caller lacks the rights this operation requires. When the cause is one a caller can act on, error.details.code names it. A resource in a workspace the caller cannot reach at all answers 404 instead, so absence and denial are indistinguishable.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "FORBIDDEN",
    "message": "Insufficient workspace permissions",
    "details": {
      "code": "INSUFFICIENT_WORKSPACE_ROLE"
    }
  }
}

The requested resource was not found.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "NOT_FOUND",
    "message": "Not found"
  }
}

The caller exceeded the request rate limit.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "RATE_LIMITED",
    "message": "API rate limit exceeded",
    "details": {
      "retryAfter": "2026-01-01T00:00:30.000Z"
    }
  }
}

Response headers

Retry-Afterinteger

Seconds to wait before retrying, sent on 429 and 503. Add jitter rather than retrying at exactly this offset.

minimum: 0
maximum: 9007199254740991

An unexpected server error occurred.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "Internal server error"
  }
}

A required service is temporarily unavailable. When present, Retry-After gives the minimum seconds to wait; add jitter before retrying. Check operation-specific guidance before repeating a change after an uncertain response.

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object

Canonical error envelope returned by the public v2 API.

1 field

errorobjectRequired

Canonical error details.

3 fields

codestringRequired

Stable machine-readable error code.

messagestringRequired

Human-readable explanation of the error.

detailsvalue

Structured error context whose keys depend on the error. Actionable 403 responses use the V2ActionableForbiddenDetails shape; validation failures may return issue arrays instead.

Schema details

Any of

Option 1object

Machine-readable cause and optional context for an actionable 403 response.

1 field

codestringRequired

Stable cause code for an actionable 403 response.

enum: ["INSUFFICIENT_WORKSPACE_ROLE","PERSONAL_API_KEYS_DISABLED","WORKSPACE_KEY_OPERATION_NOT_PERMITTED","PRINCIPAL_KIND_NOT_PERMITTED","ORGANIZATION_MEMBERSHIP_REQUIRED","ORGANIZATION_ADMIN_REQUIRED","ENTERPRISE_PLAN_REQUIRED","SSO_DISABLED","SSO_DOMAIN_NOT_VERIFIED","SSO_PROVIDER_LIMIT_REACHED","ORGANIZATION_PLAN_REQUIRED","AUDIT_LOGS_DISABLED","ACCESS_REQUESTS_DISABLED","ACCESS_REQUEST_ORGANIZATION_REQUIRED","SKILL_EDITOR_ACCESS_REQUIRED","SECRET_ADMIN_ACCESS_REQUIRED","WORKSPACE_RESOURCE_LIMIT_REACHED","PUBLIC_SHARING_NOT_ALLOWED","CREDENTIAL_ADMIN_ACCESS_REQUIRED","MCP_SERVER_URL_NOT_ALLOWED","WORKSPACE_PLAN_CAPABILITY_REQUIRED","CHAT_AUTH_MODE_NOT_PERMITTED","CONNECTOR_MANAGED_RESOURCE_READ_ONLY","PERMISSION_GROUP_CAPABILITY_BLOCKED","INTEGRATION_NOT_ALLOWED","INSUFFICIENT_SCOPE","SCIM_MANAGED_MEMBERSHIP"]

Additional propertiesvalue

Additional context for this refusal.

Option 2value

Other structured context defined by the specific error.

Additional properties are not allowed.

Example

{
  "error": {
    "code": "SERVICE_UNAVAILABLE",
    "message": "Service temporarily unavailable"
  }
}

Response headers

Retry-Afterinteger

Seconds to wait before retrying, sent on 429 and 503. Add jitter rather than retrying at exactly this offset.

minimum: 0
maximum: 9007199254740991

Authentication

Query parameters

Responses

200

Response example 1

Response headers

400

401

403

404

429

Response headers

500

503

Response headers