List tools

GET/api/v2/tools

List built-in tools exposed by blocks visible to the caller. Use List MCP server tools for an external server's tools and List custom tools for workspace code-backed tools.

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 integration allowlist, revealed preview blocks, and deployed custom blocks decide what this catalog contains.

minLength: 1
maxLength: 128

searchstring

Case-insensitive substring match against the tool id, name, and description.

minLength: 1
maxLength: 200

hostedApiKeystring

Restrict to tools by how their API key is supplied.

enum: ["always","conditional","none"]

oauthProviderstring

Restrict to tools that authenticate against this OAuth service.

minLength: 1
maxLength: 255

sortBystring

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

default: id
enum: ["id","name"]

sortOrderstring

Sort direction.

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

limitinteger

Maximum tools 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

@layer base { .docs-root [data-docs-tab-panel][hidden] { display: block !important; } } .docs-root [data-docs-tabs-root] [role="tablist"], .docs-root [data-docs-tabs-select] { display: none; }

A page of built-in tools available in the workspace.

@layer base { .docs-root [data-docs-tab-panel][hidden] { display: block !important; } } .docs-root [data-docs-tabs-root] [role="tablist"], .docs-root [data-docs-tabs-select] { display: none; }

object

Built-in tools available in the workspace.

2 fields

dataarrayRequired

Items in the current page.

Schema details

Array itemobject

List view of a built-in tool: identity, auth, and key hosting.

6 fields

idstringRequired

Registered tool identifier, including its version suffix.

namestringRequired

Display name.

descriptionstringRequired

What the tool does.

versionstring

Tool version.

hostedApiKeystringRequired

API-key hosting on this deployment: always, conditional for some parameter combinations, or none when Sim does not supply a key. Supply your own key only if the tool requires one. Self-hosted deployments report none for every tool.

enum: ["always","conditional","none"]

oauthobject

OAuth requirement, when the tool has one.

3 fields

requiredbooleanRequired

Whether the tool cannot run without an OAuth credential.

providerstringRequired

OAuth service the credential must authenticate.

requiredScopesarray

Scopes the credential must carry.

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

Additional properties are not allowed.

Response example 1

json

{
  "data": [
    {
      "id": "slack_message",
      "name": "Slack Send Message",
      "description": "Send a message to a Slack channel.",
      "version": "1.0.0",
      "hostedApiKey": "none",
      "oauth": {
        "required": true,
        "provider": "slack",
        "requiredScopes": [
          "chat:write"
        ]
      }
    }
  ],
  "nextCursor": null
}

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