Knowledge bases

Search knowledge

Search one or more knowledge bases with semantic vector retrieval, optional hybrid full-text retrieval, and structured tag filters. Every result names the `knowledgeBaseId` it came from. A request body over 2 MiB is a `413`. Reranking returns `409` when the stored results cannot pass secret-provenance enforcement. OAuth scope: `api:read`.

POST/api/v2/knowledge/search

Search one or more knowledge bases with semantic vector retrieval, optional hybrid full-text retrieval, and structured tag filters. Every result names the knowledgeBaseId it came from. A request body over 2 MiB is a 413. Reranking returns 409 when the stored results cannot pass secret-provenance enforcement.

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.

Request body

Required

Knowledge bases, query, result limit, retrieval mode, and optional tag filters.

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object

Knowledge bases, query, result limit, retrieval mode, and optional tag filters.

9 fields

workspaceIdstringRequired

Workspace that owns the knowledge bases.

minLength: 1
maxLength: 128

knowledgeBaseIdsvalueRequired

One knowledge base ID or an array of up to 20 IDs. Query searches require the same embedding model and dimensions across all selected bases; search incompatible bases separately. Tag-only searches do not require this.

Schema details

Any of

Option 1string

minLength: 1

Option 2array

minItems: 1
maxItems: 20

Schema details

Array itemstring

minLength: 1

querystring

Natural-language query; required when tag filters are omitted. At most 32768 characters — longer text exceeds the embedding model's per-input token ceiling and would be truncated before the billed search ran.

maxLength: 32768

topKnumber

Maximum number of search results to return. Must be a whole number between 1 and 100.

default: 10
minimum: 1
maximum: 100

tagFiltersarray

Up to 10 filters combined with AND; repeating a tag narrows results. To express OR, run separate searches. Every tag must exist with the same slot and field type in each selected knowledge base or the request is rejected. List valid names with the knowledge-base tag-list operation.

maxItems: 10

Schema details

Array itemobject

A structured tag filter applied to knowledge search.

5 fields

tagNamestringRequired

Display name of the tag to filter.

fieldTypestring

Tag field type.

enum: ["text","number","date","boolean"]

operatorstring

Comparison operator; valid operators depend on the field type. Text tags accept eq, neq, contains, not_contains, starts_with, ends_with; number and date tags accept eq, neq, gt, gte, lt, lte, between; boolean tags accept eq, neq. An operator the tag's field type does not implement is rejected, never ignored.

default: eq
enum: ["eq","neq","contains","not_contains","starts_with","ends_with","gt","gte","lt","lte","between"]

valuevalueRequired

Tag value to compare against.

Schema details

Any of

Option 1string

Option 2number

Option 3boolean

valueTovalue

Upper bound for the between operator, and required whenever that operator is used.

Schema details

Any of

Option 1string

Option 2number

Additional properties are not allowed.

searchModevalue

Retrieval strategy: vector uses semantic search; hybrid also runs full-text search. Omit to use the workspace policy.

Schema details

Any of

Option 1string

enum: ["vector","hybrid"]

Option 2null

rerankerEnabledboolean

Reorder retrieved chunks with a reranking model before truncating to topK. Ignored for tag-only searches. A completed reranking call adds a search unit. If reranking is unavailable, results keep their retrieval order; check rerankerStatus.

rerankerModelstring

Reranking model to use when rerankerEnabled is true. Defaults to rerank-v4.0-fast.

default: rerank-v4.0-fast
enum: ["rerank-v4.0-pro","rerank-v4.0-fast","rerank-v3.5"]

rerankerInputCountinteger

How many candidate chunks to retrieve before reranking. Defaults to four times topK, capped at 100. A larger pool costs more retrieval work but gives the reranker more to choose from.

minimum: 1
maximum: 100

Additional properties are not allowed.

Request example 1

json

{
  "workspaceId": "a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64",
  "knowledgeBaseIds": [
    "7c9e6679-7425-40de-944b-e07fc1f90ae7"
  ],
  "query": "How do I reset my password?",
  "topK": 10
}

Responses

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Matching document chunks ordered by relevance.

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object

Matching chunks and search execution context.

1 field

dataobjectRequired

Response data.

6 fields

resultsarrayRequired

Matching chunks ordered by relevance.

Schema details

Array itemobject

A matching document chunk returned by knowledge search.

11 fields

knowledgeBaseIdstringRequired

Knowledge base the matching chunk came from; a search may span up to 20.

documentIdstringRequired

Identifier of the document containing the matching chunk.

documentNamevalueRequired

Filename of the source document, or null when unavailable.

Schema details

Any of

Option 1string

Option 2null

sourceUrlvalueRequired

Original source URL, or null for a directly uploaded document.

Schema details

Any of

Option 1string

Option 2null

contentstringRequired

Text content of the matching chunk.

chunkIndexintegerRequired

Zero-based chunk index within the document.

minimum: 0
maximum: 9007199254740991

metadataobjectRequired

Document tag values keyed by tag display name.

Schema details

Additional propertiesvalue

User-defined string, number, boolean, or date tag value.

similaritynumberRequired

Cosine similarity between the query embedding and the chunk (1 - cosine distance), reported the same way in vector and hybrid mode; tag-only matches use 1. In hybrid mode results are not ordered by this value — see rankScore.

rankScorenumberRequired

The retrieval score, or reranker score when reranked. In vector mode it equals similarity; in hybrid mode it is the reciprocal-rank-fusion score (a sum of 1/(60 + rank) over the lexical and vector legs, so a chunk both legs ranked first scores 2/61); when a reranker ordered the results it is rerankerScore. Recency boosting may reorder retrieval results without changing this score; rank always reflects returned order.

rankintegerRequired

1-based position in the returned order.

maximum: 9007199254740991
exclusiveMinimum: 0

rerankerScorenumber

Relevance score assigned by the reranker, present only on results a reranker ordered. Results are ordered by this score when it is present, which is why it can disagree with similarity.

Additional properties are not allowed.

querystringRequired

Executed query, or an empty string for tag-only search.

knowledgeBaseIdsarrayRequired

Knowledge base identifiers that were searched.

Schema details

Array itemstring

topKintegerRequired

Maximum number of results requested.

maximum: 9007199254740991
exclusiveMinimum: 0

totalResultsintegerRequired

Number of results returned.

minimum: 0
maximum: 9007199254740991

rerankerStatusstringRequired

Reranking outcome. applied means results carry rerankerScore and follow that score. unavailable means reranking could not produce a usable order; the search succeeded in retrieval order without rerankerScore. Retry if reranking is needed. skipped means there was nothing to rank. not_requested means rerankerEnabled was absent or false.

enum: ["not_requested","skipped","unavailable","applied"]

Additional properties are not allowed.

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.

@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

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 workspace has exceeded its usage or billing limits.

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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": "USAGE_LIMIT_EXCEEDED",
    "message": "Usage limit exceeded. Please upgrade your plan to continue."
  }
}

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 request conflicts with current resource state.

@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

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": "CONFLICT",
    "message": "The request conflicts with current knowledge resource state"
  }
}

The request, or a resource collection it must materialize, exceeds the allowed size: an oversized request body, a generated artifact past the download ceiling, or a workspace folder tree too large to load in full.

@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

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": "PAYLOAD_TOO_LARGE",
    "message": "Request body is too large"
  }
}

The request uses an unsupported media type.

@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

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": "UNSUPPORTED_MEDIA_TYPE",
    "message": "Request body must be sent as application/json"
  }
}

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.

@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

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

Suggest an edit

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Request

curl --request POST 'https://www.sim.ai/api/v2/knowledge/search' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "workspaceId": "a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64",
  "knowledgeBaseIds": [
    "7c9e6679-7425-40de-944b-e07fc1f90ae7"
  ],
  "query": "How do I reset my password?",
  "topK": 10
}'

const response = await fetch("https://www.sim.ai/api/v2/knowledge/search", {
  "method": "POST",
  "headers": {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  "body": "{\n  \"workspaceId\": \"a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64\",\n  \"knowledgeBaseIds\": [\n    \"7c9e6679-7425-40de-944b-e07fc1f90ae7\"\n  ],\n  \"query\": \"How do I reset my password?\",\n  \"topK\": 10\n}"
});
if (!response.ok) throw new Error(`HTTP ${response.status}`);
const result = await response.json();

import requests

response = requests.request(
    "POST",
    "https://www.sim.ai/api/v2/knowledge/search",
    headers={
  "X-API-Key": "YOUR_API_KEY",
  "Content-Type": "application/json"
},
    data="{\n  \"workspaceId\": \"a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64\",\n  \"knowledgeBaseIds\": [\n    \"7c9e6679-7425-40de-944b-e07fc1f90ae7\"\n  ],\n  \"query\": \"How do I reset my password?\",\n  \"topK\": 10\n}",
)
response.raise_for_status()
result = response.json()

package main

import (
  "io"
  "net/http"
  "os"
  "strings"
)

func check(err error) {
  if err != nil { panic(err) }
}

func must[T any](value T, err error) T {
  check(err)
  return value
}

func main() {

  request := must(http.NewRequest("POST", "https://www.sim.ai/api/v2/knowledge/search", strings.NewReader("{\n  \"workspaceId\": \"a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64\",\n  \"knowledgeBaseIds\": [\n    \"7c9e6679-7425-40de-944b-e07fc1f90ae7\"\n  ],\n  \"query\": \"How do I reset my password?\",\n  \"topK\": 10\n}")))
  request.Header.Set("X-API-Key", "YOUR_API_KEY")
  request.Header.Set("Content-Type", "application/json")
  response := must(http.DefaultClient.Do(request))
  defer response.Body.Close()
  if response.StatusCode >= 400 { panic(response.Status) }
  must(io.Copy(os.Stdout, response.Body))
}

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Example {
  public static void main(String[] args) throws Exception {
    var builder = HttpRequest.newBuilder(URI.create("https://www.sim.ai/api/v2/knowledge/search"));
    builder.header("X-API-Key", "YOUR_API_KEY");
    builder.header("Content-Type", "application/json");
    var request = builder.method("POST", HttpRequest.BodyPublishers.ofString("{\n  \"workspaceId\": \"a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64\",\n  \"knowledgeBaseIds\": [\n    \"7c9e6679-7425-40de-944b-e07fc1f90ae7\"\n  ],\n  \"query\": \"How do I reset my password?\",\n  \"topK\": 10\n}")).build();
    var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofInputStream());
    try (var body = response.body()) {
      if (response.statusCode() >= 400) throw new IllegalStateException("HTTP " + response.statusCode());
      body.transferTo(System.out);
    }
  }
}

using System;
using System.IO;
using System.Net.Http;
using System.Text;

using var client = new HttpClient();
using var request = new HttpRequestMessage(new HttpMethod("POST"), "https://www.sim.ai/api/v2/knowledge/search");
request.Content = new StringContent("{\n  \"workspaceId\": \"a91c4b2e-6d3f-4e8a-b5c7-0d9e2f1a8c64\",\n  \"knowledgeBaseIds\": [\n    \"7c9e6679-7425-40de-944b-e07fc1f90ae7\"\n  ],\n  \"query\": \"How do I reset my password?\",\n  \"topK\": 10\n}", Encoding.UTF8);
request.Headers.TryAddWithoutValidation("X-API-Key", "YOUR_API_KEY");
request.Content!.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/json");
using var response = await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);
response.EnsureSuccessStatusCode();
await response.Content.CopyToAsync(Console.OpenStandardOutput());

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Response

{
  "data": {
    "results": [
      {
        "knowledgeBaseId": "7c9e6679-7425-40de-944b-e07fc1f90ae7",
        "documentId": "b2d4f8a0-1c3e-4a5b-9d7c-2e6f0a8b4c12",
        "documentName": "getting-started.pdf",
        "sourceUrl": "string",
        "content": "To reset your password, open Settings and choose Security.",
        "chunkIndex": 3,
        "metadata": {
          "category": "billing",
          "priority": 2
        },
        "similarity": 0.8423,
        "rankScore": 0.0328,
        "rank": 1
      }
    ],
    "query": "How do I reset my password?",
    "knowledgeBaseIds": [
      "7c9e6679-7425-40de-944b-e07fc1f90ae7"
    ],
    "topK": 10,
    "totalResults": 4,
    "rerankerStatus": "applied"
  }
}

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

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

OpenAPI document ↗Download the specification

Authentication

Request body

Request example 1

Responses

200

Response headers

400

401

402

403

404

409

413

415

429

Response headers

500

503

Response headers