Backslash Partners API & developer resources

Backslash Partners (백슬래시파트너스) publishes machine-readable developer resources for agents and integrators. Product name keywords: Backslash Partners OpenAPI, Backslash Partners Guest API, Backslash Partners API documentation.

Versioned Guest API (/api/v1)

Preferred base URL for agents: https://backslash.co.kr/api/v1

operationId	Method	Path
`guestPortfolioSearch`	GET	`/guest/portfolio`
`guestPortfolioGetByPublicId`	GET	`/guest/portfolio/{publicId}`
`guestPostSearch`	GET	`/guest/post`
`guestPostGetByPublicId`	GET	`/guest/post/{publicId}`
`guestInquiryCreate`	POST	`/guest/inquiry`

Example: GET https://backslash.co.kr/api/v1/guest/portfolio?limit=20
Next page: GET https://backslash.co.kr/api/v1/guest/portfolio?cursor={pagination.nextCursor}

Pagination (cursor)

List endpoints (/guest/portfolio, /guest/post) return:

{
  "data": [ ... ],
  "pagination": {
    "limit": 20,
    "total": 42,
    "hasMore": true,
    "nextCursor": "...",
    "prevCursor": null
  }
}

Preferred query: cursor + optional limit (default 20, max 100)
Legacy query: page + size (still accepted when cursor is omitted)
Pass pagination.nextCursor as ?cursor= to fetch the next page

Origin (offset JSON { page, size, lastPage, total, data }): https://ec2-15-165-221-95.ap-northeast-2.compute.amazonaws.com/guest/...

Versioning & deprecation

Versioning: URL path prefix /api/v1/. Breaking changes ship under /api/v2/.
Response header: API-Version: 1 on versioned responses.
Deprecation: Deprecated versions send Deprecation and Sunset headers (RFC 8594) for at least 90 days before removal. Prefer the highest non-deprecated version from OpenAPI servers.

Rate limits

Guest and docs API responses include:

RateLimit-Limit, RateLimit-Remaining, RateLimit-Reset
Aliases: X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset
HTTP 429 includes Retry-After (seconds)

Default window: 60 requests / minute / client for /api/v1/guest/* (subject to change; always trust response headers).

Content negotiation

Request Accept: text/markdown on marketing pages (or *.md URLs). Errors under /api/* are JSON ({ "error": { "code", "message", "hint" } }).

Auth note

Guest endpoints are public/read-oriented (inquiry is write). Admin APIs need issued credentials — do not invent tokens. Email contact@backslash.co.kr for access.