> ## Documentation Index > Fetch the complete documentation index at: https://api.csboard.com/llms.txt > Use this file to discover all available pages before exploring further. # POST /v1/p2p/listings — 在 P2P 市场上架您的 CS2 物品 > 以您自己的价格在 CSBoard P2P 市场上架一件或最多 50 件 CS2 物品。任何 API 密钥均可免费使用；必须提供 Idempotency-Key。 以您自定的价格将您自己的 CS2 物品发布到 CSBoard P2P 市场。可以发送单件物品，也可以用 `{ "items": [...] }` 批量发送最多 50 件。请从 [`GET /v1/p2p/inventory`](/zh-Hans/api-reference/get-p2p-inventory) 获取 `operational_asset_id` 和 `asset_revision`，并原样发送。 **需要身份验证。** 请将密钥作为 `Authorization: Bearer csb_pub_...` 发送。免费——任何有效密钥均可，无余额要求，也无需交易权限。 ## 卖家规则 与网站相同的规则同样适用： * 已验证的邮箱或已绑定的 Telegram，以便在物品售出时通知您； * CSBoard 扩展程序或应用能够发送 Steam 交易，且账户已启用 Steam 手机令牌； * 没有 P2P 冷却、暂停或店铺锁定； * 一份最新的库存读取结果（参见 [`GET /v1/p2p/inventory`](/zh-Hans/api-reference/get-p2p-inventory) 中的 `inventory_proof`）。 ## 价格下限 价格不得低于我们对该物品市场价的**一半**。在网站上，卖家在看到警告后可以确认更低的价格；通过 API 密钥则没有这种确认：更低的价格会返回 `422 price_below_market`，并附带 `market_usd` 和 `floor_usd`，方便您调整后重新发送。这种拒绝不会消耗您的 `Idempotency-Key`。如果我们没有该物品的市场价，则不设下限。 价格以美元计，范围 `0.10` 到 `100000`，精确到美分。`12.345` 会被拒绝，而不是被四舍五入。 ## 幂等性 `Idempotency-Key` 为**必填**（8–128 个字符，每次发布请求唯一）。如果您用同一个键重新发送同一个请求，已发布的物品会按原样返回，而不会被重复上架。单件物品的重放返回 `200`，并带有 `Idempotent-Replay: true` 响应头。 * 用同一个键发送不同的价格或修订版本，会返回 `409 idempotency_key_mismatch`。 * 收到 `409 idempotency_key_consumed` 表示之前的某次尝试中途失败——请换一个新键重试。 ## 响应 * **单件物品：** 返回 `201` 和挂单；重放时返回 `200`。 * **批量：** 始终返回 `200`，`data` 中每件物品一条结果。一件物品失败不会影响其他物品；失败的物品会带上它单独请求时会返回的 `status` 和 `code`。 写操作限制为**每个密钥每分钟 30 次请求**，与改价和下架共用。 ## 示例请求 ```bash theme={null} curl -X POST https://csboard.com/v1/p2p/listings \ -H "Authorization: Bearer csb_pub_..." \ -H "Content-Type: application/json" \ -H "Idempotency-Key: 0b7d4c1e-6f2a-4b9e-8c3d-5a1f2e9b7c40" \ -d '{ "items": [ { "operational_asset_id": "5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30", "asset_revision": "sha256:fd0e6de607b774aaaf4d9cdb7e014c003ba614b03f0460b01e8c94bce034bac5", "price_usd": 12.34 }, { "operational_asset_id": "c81e2d44-9b07-4f1a-b3d5-6e2a90f4c7b8", "asset_revision": "sha256:a5b10a9006f6ebb68f8b9e81c85b5a6d1bf0f32737fc3f57a597dd01e66e0523", "price_usd": 3.5 } ] }' ``` ## 示例响应 ```json theme={null} { "data": [ { "operational_asset_id": "5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30", "success": true, "replay": false, "listing": { "id": "cm1xq8z4k0003ab12cd34ef56", "status": "active", "price_usd": 12.34, "currency": "USD", "commission_usd": 0.25, "seller_payout_usd": 12.09, "market_hash_name": "AK-47 | Redline (Field-Tested)", "item_name": "AK-47 | Redline (Field-Tested)", "asset_id": "38451927734", "operational_asset_id": "5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30", "float_value": 0.2711, "needs_resync": false, "created_at": "2026-10-02T12:04:11.000Z", "updated_at": "2026-10-02T12:04:11.000Z" } }, { "operational_asset_id": "c81e2d44-9b07-4f1a-b3d5-6e2a90f4c7b8", "success": false, "status": 409, "code": "hold_not_ended", "detail": "The Steam trade hold has not ended yet." } ], "success_count": 1, "total_requested": 2 } ``` ## 错误代码 | HTTP 状态码 | 代码 | 含义 | | - | - | - | | 400 | `idempotency_key_required` | 缺少 `Idempotency-Key` 请求头，或其长度不在 8–128 个字符之间。 | | 400 | `invalid_request` | 请求体格式错误——缺少字段、包含未知字段，或价格不在 `0.10`–`100000` 范围内或超过两位小数。 | | 400 | `no_capable_client` | 您这一侧没有能发送交易的客户端。请运行 CSBoard 扩展程序或应用。 | | 403 | `contact_required` | 请先添加已验证的邮箱或绑定 Telegram。 | | 403 | `shop_locked`、`p2p_cooldown`、`p2p_suspended`、`trading_banned` | 该账户的 P2P 出售已被锁定。如果锁定会到期，响应体会注明到期时间。 | | 403 | `account_banned` / `ip_not_allowed` | 账户已被封禁，或请求来自该密钥 IP 白名单之外的地址。 | | 404 | `operational_asset_not_found` | `operational_asset_id` 不在您已同步的库存中。 | | 409 | `asset_revision_changed` | 物品在您读取之后发生了变化。请重新读取库存。 | | 409 | `snapshot_stale` 及其他 `reasons` 代码 | 该物品不可上架——代码取其 `reasons` 中的第一项。`snapshot_stale` 会附带可供轮询的 `inventory_proof`。 | | 409 | `already_listed` | 该物品已有挂单。 | | 409 | `idempotency_in_progress` | 使用该键的请求仍在处理中。请稍候并重新发送同一请求。 | | 409 | `idempotency_key_mismatch` / `idempotency_key_consumed` | 该键已用于不同的参数，或之前使用它的尝试已失败。请换一个新键。 | | 422 | `price_below_market` | 价格低于我们市场价的一半。参见 `market_usd` 和 `floor_usd`。 | | 429 | `rate_limit_exceeded` | 本分钟内 P2P 写操作超过 30 次，或超过该密钥的通用限额。请等待 `Retry-After` 响应头中的秒数。 | | 503 | `p2p_disabled` | P2P 市场目前已关闭。 | 物品售出后会发生什么，请参阅 [P2P 上架指南](/zh-Hans/guides/p2p-listing)。 ## OpenAPI ````yaml POST /p2p/listings openapi: 3.1.0 info: title: CSBoard API version: 1.0.0 description: >- Market data over the CSBoard marketplace — live listings, floats, stickers, minAsk prices, FX rates — plus opt-in buying straight from your balance. Free to read, key-gated, built for automation. contact: name: CSBoard url: https://csboard.com/docs servers: - url: https://csboard.com/v1 description: Production security: - bearerAuth: [] tags: - name: Status description: Liveness and freshness probes. - name: Market data description: Read the live catalog, prices, and FX rates. - name: Trading description: Buy listings from your CSBoard balance. Opt-in, key-gated. - name: P2P description: >- List your own CS2 skins on the CSBoard P2P market. Free — any valid key, no balance requirement. - name: Account description: Your balance, settled funds, and trading status. - name: Webhooks description: Register an endpoint and receive signed order updates instead of polling. paths: /p2p/listings: post: tags: - P2P summary: List items on the P2P market description: >- Publish one item, or up to 50 as `{ "items": [...] }`. Free — any valid key, no balance requirement. CS2 only. The website's seller rules apply: a verified email or linked Telegram, the CSBoard extension or app able to send the trade, Steam Mobile Authenticator, no cooldown or shop lock, and a current read of your inventory. The price may not be under half of our market price for the item; unlike the website there is no way to confirm a lower one over a key. A single item answers `201` (or `200` with `Idempotent-Replay: true` when it was already published under this key). A batch always answers `200` with a result per item — one item that fails does not stop the others. Counts toward the 30 requests/minute P2P write limit of the key. operationId: createP2PListings parameters: - name: Idempotency-Key in: header required: true description: >- Required, 8–128 characters, unique per publish request. Resending the same request with the same key returns each item that was already published instead of listing it twice. A key reused with a different price or revision answers `409 idempotency_key_mismatch`; after `409 idempotency_key_consumed`, use a new key. A `422 price_below_market` refusal does not spend the key. schema: type: string minLength: 8 maxLength: 128 requestBody: required: true content: application/json: schema: oneOf: - $ref: '#/components/schemas/P2PListingRequest' - type: object required: - items additionalProperties: false properties: items: type: array minItems: 1 maxItems: 50 description: Each `operational_asset_id` may appear once. items: $ref: '#/components/schemas/P2PListingRequest' examples: single: summary: One item value: operational_asset_id: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 asset_revision: >- sha256:fd0e6de607b774aaaf4d9cdb7e014c003ba614b03f0460b01e8c94bce034bac5 price_usd: 12.34 batch: summary: Several items value: items: - operational_asset_id: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 asset_revision: >- sha256:fd0e6de607b774aaaf4d9cdb7e014c003ba614b03f0460b01e8c94bce034bac5 price_usd: 12.34 - operational_asset_id: c81e2d44-9b07-4f1a-b3d5-6e2a90f4c7b8 asset_revision: >- sha256:a5b10a9006f6ebb68f8b9e81c85b5a6d1bf0f32737fc3f57a597dd01e66e0523 price_usd: 3.5 responses: '200': description: >- A batch result, or a single item that was already published under this Idempotency-Key (header `Idempotent-Replay: true`). headers: Idempotent-Replay: description: '`true` on a replayed single-item publish.' schema: type: string content: application/json: schema: oneOf: - $ref: '#/components/schemas/P2PBatchResult' - $ref: '#/components/schemas/P2PListing' example: data: - operational_asset_id: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 success: true replay: false listing: id: cm1xq8z4k0003ab12cd34ef56 status: active price_usd: 12.34 currency: USD commission_usd: 0.25 seller_payout_usd: 12.09 market_hash_name: AK-47 | Redline (Field-Tested) item_name: AK-47 | Redline (Field-Tested) asset_id: '38451927734' operational_asset_id: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 float_value: 0.2711 needs_resync: false created_at: '2026-10-02T12:04:11.000Z' updated_at: '2026-10-02T12:04:11.000Z' - operational_asset_id: c81e2d44-9b07-4f1a-b3d5-6e2a90f4c7b8 success: false status: 409 code: hold_not_ended detail: The Steam trade hold has not ended yet. success_count: 1 total_requested: 2 '201': description: Single item published. content: application/json: schema: $ref: '#/components/schemas/P2PListing' example: id: cm1xq8z4k0003ab12cd34ef56 status: active price_usd: 12.34 currency: USD commission_usd: 0.25 seller_payout_usd: 12.09 market_hash_name: AK-47 | Redline (Field-Tested) item_name: AK-47 | Redline (Field-Tested) asset_id: '38451927734' operational_asset_id: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 float_value: 0.2711 needs_resync: false created_at: '2026-10-02T12:04:11.000Z' updated_at: '2026-10-02T12:04:11.000Z' '400': description: >- Missing Idempotency-Key, a malformed body, or a seller requirement that is not met. content: application/json: schema: $ref: '#/components/schemas/Error' examples: idempotency_key_required: summary: No Idempotency-Key header value: code: idempotency_key_required detail: >- Send an Idempotency-Key header (8-128 characters), unique per publish request. invalid_request: summary: Malformed body value: code: invalid_request detail: >- price_usd must be 0.10 to 100000 USD with at most two decimals no_capable_client: summary: Nothing running that can send the trade value: code: no_capable_client detail: >- Seller has no client able to deliver this item — try again later. '401': $ref: '#/components/responses/Unauthorized' '403': description: >- Forbidden — a seller rule (`contact_required`, `shop_locked`, `p2p_cooldown`, `p2p_suspended`, `trading_banned`), an account ban, or the key's IP allowlist. content: application/json: schema: $ref: '#/components/schemas/Error' examples: contact_required: summary: No verified email or Telegram to tell you about a sale value: code: contact_required detail: >- Add a verified email or link Telegram so we can tell you when your item sells shop_locked: summary: Shop locked for unanswered sales value: code: shop_locked detail: Your shop is locked for unanswered sales locked_until: '2026-10-03T09:00:00.000Z' p2p_cooldown: summary: P2P cooldown value: code: p2p_cooldown detail: P2P trading is on cooldown for your account cooldown_until: '2026-10-02T18:00:00.000Z' account_banned: summary: Account banned value: code: account_banned detail: This account is banned. ip_not_allowed: summary: Request from outside the key's IP allowlist value: code: ip_not_allowed detail: >- This API key is restricted to an IP allowlist and 203.0.113.7 is not on it. Update it at https://csboard.com/profile?tab=api '404': description: The `operational_asset_id` is not in your synced inventory. content: application/json: schema: $ref: '#/components/schemas/Error' examples: operational_asset_not_found: summary: Unknown asset value: code: operational_asset_not_found detail: Asset not found in your synced inventory. '409': description: >- The item cannot be listed as sent, or the Idempotency-Key conflicts. An item that is not listable answers with the first of its `reasons` codes from `GET /p2p/inventory`. content: application/json: schema: $ref: '#/components/schemas/Error' examples: asset_revision_changed: summary: Item changed since you read it value: code: asset_revision_changed detail: Inventory changed; review this listing action again already_listed: summary: Already on sale value: code: already_listed detail: Item already has a publishable listing snapshot_stale: summary: Inventory read too old — includes inventory_proof to poll value: code: snapshot_stale detail: >- The latest complete inventory proof is out of date — refresh your inventory. inventory_proof: status: pending started_at: '2026-10-02T12:00:00.000Z' retry_after_ms: 3000 idempotency_in_progress: summary: Same key still processing value: code: idempotency_in_progress detail: A request with this Idempotency-Key is still processing. idempotency_key_mismatch: summary: Key reused with different details value: code: idempotency_key_mismatch detail: >- This Idempotency-Key was already used with different listing details. idempotency_key_consumed: summary: Earlier attempt with this key failed value: code: idempotency_key_consumed detail: >- An earlier attempt with this Idempotency-Key failed. Retry with a new key. '422': description: >- The price is under half of our market price for this item. Over a key it cannot be confirmed past — adjust `price_usd` and resend; the Idempotency-Key is not spent. content: application/json: schema: $ref: '#/components/schemas/Error' examples: price_below_market: summary: Under half of market value: code: price_below_market detail: >- price_usd 4 is under the minimum 255.16 for this item (market ~510.32). Listings made with an API key cannot go below it. market_usd: 510.32 floor_usd: 255.16 price_usd: 4 '429': $ref: '#/components/responses/P2PWriteLimited' '503': $ref: '#/components/responses/P2PDisabled' components: schemas: P2PListingRequest: type: object required: - operational_asset_id - asset_revision - price_usd additionalProperties: false properties: operational_asset_id: type: string maxLength: 256 description: The copy to list, from `GET /p2p/inventory`. example: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 asset_revision: type: string minLength: 16 maxLength: 128 description: >- From `GET /p2p/inventory`, unchanged. If the item changed since you read it, the publish answers `409 asset_revision_changed` — read the inventory again. example: >- sha256:fd0e6de607b774aaaf4d9cdb7e014c003ba614b03f0460b01e8c94bce034bac5 price_usd: type: number minimum: 0.1 maximum: 100000 multipleOf: 0.01 description: >- Asking price in USD, whole cents (`12.34`; `12.345` is refused, not rounded). It may not be under half of our market price for the item — see `price_below_market`. P2PBatchResult: type: object properties: data: type: array items: type: object description: >- One entry per requested item, in request order. On success: `success`, `replay`, `listing`. On failure: `success: false`, `status` and the same `code` / `detail` (plus extras such as `market_usd` / `floor_usd`) the item would have answered on its own. properties: operational_asset_id: type: string success: type: boolean replay: type: boolean description: >- `true` when the item was already published under this Idempotency-Key and nothing new was listed. listing: $ref: '#/components/schemas/P2PListing' status: type: integer description: >- On failure: the HTTP status this item alone would have answered. code: type: string detail: type: string success_count: type: integer total_requested: type: integer P2PListing: type: object properties: id: type: string description: Listing id — use it with `PATCH` / `DELETE /p2p/listings/{id}`. status: type: string description: >- `active` — on sale. `trade_pending`, `trade_sent`, `verification_hold` — sold and mid-delivery. `reconciliation_required` — off the shelf because a full inventory read no longer saw the item (`needs_resync: true`). price_usd: type: number description: What the buyer pays. currency: type: string enum: - USD commission_usd: type: number description: Our fee on this listing, taken from the seller's side. seller_payout_usd: type: number description: >- What a sale credits to your balance: `price_usd` minus `commission_usd`. market_hash_name: type: string item_name: type: string asset_id: type: string description: Steam asset id of the listed copy. operational_asset_id: type: - string - 'null' float_value: type: - number - 'null' needs_resync: type: boolean description: >- `true` when the listing was taken off the shelf because your inventory no longer showed the item. It cannot be revived in place — publish the item again once it is back. created_at: type: string format: date-time updated_at: type: string format: date-time required: - id - status - price_usd - currency - commission_usd - seller_payout_usd - market_hash_name - asset_id - needs_resync - created_at - updated_at example: id: cm1xq8z4k0003ab12cd34ef56 status: active price_usd: 12.34 currency: USD commission_usd: 0.25 seller_payout_usd: 12.09 market_hash_name: AK-47 | Redline (Field-Tested) item_name: AK-47 | Redline (Field-Tested) asset_id: '38451927734' operational_asset_id: 5b0c1f7e-3d2a-4c8e-9a61-2f4d8b7e1c30 float_value: 0.2711 needs_resync: false created_at: '2026-10-02T12:04:11.000Z' updated_at: '2026-10-02T12:04:11.000Z' Error: type: object description: >- All errors return { code, detail }. Some carry extra fields (e.g. price_moved adds current_total_usd, insufficient_balance adds required_usd/current_usd). properties: code: type: string description: >- Machine-readable error code, e.g. rate_limit_exceeded, trading_not_enabled, price_moved. detail: type: string description: Human-readable explanation. required: - code responses: Unauthorized: description: Missing or invalid API key (`missing_api_key` or `invalid_api_key`). content: application/json: schema: $ref: '#/components/schemas/Error' example: code: missing_api_key detail: >- Provide your API key via `Authorization: Bearer csb_pub_…`. Generate one at https://csboard.com/profile?tab=api P2PWriteLimited: description: >- More than 30 P2P writes (publish, reprice, remove) in the current minute on this key. Wait `Retry-After` seconds. headers: Retry-After: description: Seconds to wait before retrying. schema: type: integer content: application/json: schema: $ref: '#/components/schemas/Error' example: code: rate_limit_exceeded detail: P2P write limit of 30/min exceeded. P2PDisabled: description: The P2P market is switched off. content: application/json: schema: $ref: '#/components/schemas/Error' examples: p2p_disabled: summary: P2P market unavailable value: code: p2p_disabled detail: The P2P market is not available right now. securitySchemes: bearerAuth: type: http scheme: bearer description: >- Send your key as a Bearer token on every request: `Authorization: Bearer csb_pub_...`. Generate keys in your CSBoard profile. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.