DMarket

DMarket is a marketplace for trading in-game items and skins across titles like CS2 (CS:GO), Dota 2, Team Fortress 2, and Rust. It offers a public JSON-based Trading API that lets developers programmatically manage their DMarket inventory: read account balance, sync and deposit items from linked game inventories, create and manage sell offers, place standing buy orders (targets), buy and withdraw assets, read aggregated market prices, and pull sales history. Requests authenticate with a public API key plus a per-request Ed25519 signature. DMarket was surfaced as a portfolio company of Pantera Capital. Sector: crypto / gaming.

DMarket publishes 6 API contracts indexed on the APIs.io network, including Account API, Aggregator API, Buy items API, and 3 more. Tagged areas include Company, Cryptocurrency, Gaming, Marketplace, and Trading.

The DMarket catalog on APIs.io includes 1 Spectral governance ruleset.

DMarket’s developer surface includes authentication, documentation, API reference, getting-started guide, support, engineering blog, pricing, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.0/100 thin ▬ flat Agent 29/100 agent ready Front door AI 1/6 silent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 3 Agent Skills

Company Cryptocurrency Gaming Marketplace Trading SkinsIn-Game ItemsBlockchain

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 37.0/100 · thin

Contract Quality 9.0 / 19

Developer Ergonomics 8.5 / 15

Access Clarity 3.2 / 15

Operational Transparency 0.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 48.0 — up to +13.0 composite points
Operational Transparency scores 2.6 — up to +12.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/dmarket/apis.yml: open an issue on github.com/api-evangelist/dmarket to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

DMarket Account API

User profile and balance.

DMarket Aggregator API

Aggregated market price data.

DMarket Buy items API

Browse marketplace offers and buy orders (targets), and purchase items.

DMarket Inventory/items API

User inventory, deposits and withdrawals.

DMarket Sell Items API

Create, edit, delete and list your sell offers.

DMarket Sold user items API

History of your completed sales.

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

DMarket trading Account API

OPEN COLLECTION

DMarket trading Account Aggregator API

OPEN COLLECTION

DMarket trading Account Buy items API

OPEN COLLECTION

DMarket trading Account Inventory/items API

OPEN COLLECTION

DMarket trading Account Sell Items API

OPEN COLLECTION

DMarket trading Account Sold user items API

OPEN COLLECTION

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Buy an item on the DMarket marketplace

AGENT SKILL

Place a buy order (target) on DMarket

AGENT SKILL

Deposit and list an inventory item for sale on DMarket

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

DMarket API Rules

53 rules · 46 errors 6 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Dmarket Trading Overlay

2 actions · update · dmarket-trading-openapi.yml

DERIVED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Dmarket Authentication

apiKey · 3 schemes

SECURITY

Dmarket Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: dmarket
name: DMarket
description: 'DMarket is a marketplace for trading in-game items and skins across titles like CS2 (CS:GO), Dota 2, Team Fortress
  2, and Rust. It offers a public JSON-based Trading API that lets developers programmatically manage their DMarket inventory:
  read account balance, sync and deposit items from linked game inventories, create and manage sell offers, place standing
  buy orders (targets), buy and withdraw assets, read aggregated market prices, and pull sales history. Requests authenticate
  with a public API key plus a per-request Ed25519 signature. DMarket was surfaced as a portfolio company of Pantera Capital.
  Sector: crypto / gaming.'
url: https://raw.githubusercontent.com/api-evangelist/dmarket/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
x-tier: profile
x-tier-reason: enriched
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://dmarket.com/apple-touch-icon.png
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Cryptocurrency
- Gaming
- Marketplace
- Trading
- Skins
- In-Game Items
- Blockchain
tags_raw:
- Company
- Crypto
- Gaming
- Marketplace
- Trading
- Skins
- In-Game Items
- Blockchain
apis:
- aid: dmarket:dmarket-account-api
  name: DMarket Account API
  description: User profile and balance.
  humanURL: https://docs.dmarket.com/v1/swagger.html
  baseURL: https://api.dmarket.com
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/dmarket-account-api-openapi.yml
  - type: Documentation
    url: https://docs.dmarket.com/v1/swagger.html
  - type: APIReference
    url: https://docs.dmarket.com/v1/swagger.html
  - type: Authentication
    url: authentication/dmarket-authentication.yml
  - type: Conventions
    url: conventions/dmarket-conventions.yml
  - type: ErrorCatalog
    url: errors/dmarket-problem-types.yml
  - type: Lifecycle
    url: lifecycle/dmarket-lifecycle.yml
  - type: DataModel
    url: data-model/dmarket-data-model.yml
  - type: Conformance
    url: conformance/dmarket-conformance.yml
- aid: dmarket:dmarket-aggregator-api
  name: DMarket Aggregator API
  description: Aggregated market price data.
  humanURL: https://docs.dmarket.com/v1/swagger.html
  baseURL: https://api.dmarket.com
  tags:
  - Aggregator
  properties:
  - type: OpenAPI
    url: openapi/dmarket-aggregator-api-openapi.yml
  - type: Documentation
    url: https://docs.dmarket.com/v1/swagger.html
  - type: APIReference
    url: https://docs.dmarket.com/v1/swagger.html
  - type: Authentication
    url: authentication/dmarket-authentication.yml
  - type: Conventions
    url: conventions/dmarket-conventions.yml
  - type: ErrorCatalog
    url: errors/dmarket-problem-types.yml
  - type: Lifecycle
    url: lifecycle/dmarket-lifecycle.yml
  - type: DataModel
    url: data-model/dmarket-data-model.yml
  - type: Conformance
    url: conformance/dmarket-conformance.yml
- aid: dmarket:dmarket-buy-items-api
  name: DMarket Buy items API
  description: Browse marketplace offers and buy orders (targets), and purchase items.
  humanURL: https://docs.dmarket.com/v1/swagger.html
  baseURL: https://api.dmarket.com
  tags:
  - Buy items
  properties:
  - type: OpenAPI
    url: openapi/dmarket-buy-items-api-openapi.yml
  - type: Documentation
    url: https://docs.dmarket.com/v1/swagger.html
  - type: APIReference
    url: https://docs.dmarket.com/v1/swagger.html
  - type: Authentication
    url: authentication/dmarket-authentication.yml
  - type: Conventions
    url: conventions/dmarket-conventions.yml
  - type: ErrorCatalog
    url: errors/dmarket-problem-types.yml
  - type: Lifecycle
    url: lifecycle/dmarket-lifecycle.yml
  - type: DataModel
    url: data-model/dmarket-data-model.yml
  - type: Conformance
    url: conformance/dmarket-conformance.yml
- aid: dmarket:dmarket-inventory-items-api
  name: DMarket Inventory/items API
  description: User inventory, deposits and withdrawals.
  humanURL: https://docs.dmarket.com/v1/swagger.html
  baseURL: https://api.dmarket.com
  tags:
  - Inventory Items
  tags_raw:
  - Inventory/items
  properties:
  - type: OpenAPI
    url: openapi/dmarket-inventory-items-api-openapi.yml
  - type: Documentation
    url: https://docs.dmarket.com/v1/swagger.html
  - type: APIReference
    url: https://docs.dmarket.com/v1/swagger.html
  - type: Authentication
    url: authentication/dmarket-authentication.yml
  - type: Conventions
    url: conventions/dmarket-conventions.yml
  - type: ErrorCatalog
    url: errors/dmarket-problem-types.yml
  - type: Lifecycle
    url: lifecycle/dmarket-lifecycle.yml
  - type: DataModel
    url: data-model/dmarket-data-model.yml
  - type: Conformance
    url: conformance/dmarket-conformance.yml
- aid: dmarket:dmarket-sell-items-api
  name: DMarket Sell Items API
  description: Create, edit, delete and list your sell offers.
  humanURL: https://docs.dmarket.com/v1/swagger.html
  baseURL: https://api.dmarket.com
  tags:
  - Sell Items
  properties:
  - type: OpenAPI
    url: openapi/dmarket-sell-items-api-openapi.yml
  - type: Documentation
    url: https://docs.dmarket.com/v1/swagger.html
  - type: APIReference
    url: https://docs.dmarket.com/v1/swagger.html
  - type: Authentication
    url: authentication/dmarket-authentication.yml
  - type: Conventions
    url: conventions/dmarket-conventions.yml
  - type: ErrorCatalog
    url: errors/dmarket-problem-types.yml
  - type: Lifecycle
    url: lifecycle/dmarket-lifecycle.yml
  - type: DataModel
    url: data-model/dmarket-data-model.yml
  - type: Conformance
    url: conformance/dmarket-conformance.yml
- aid: dmarket:dmarket-sold-user-items-api
  name: DMarket Sold user items API
  description: History of your completed sales.
  humanURL: https://docs.dmarket.com/v1/swagger.html
  baseURL: https://api.dmarket.com
  tags:
  - Sold user items
  properties:
  - type: OpenAPI
    url: openapi/dmarket-sold-user-items-api-openapi.yml
  - type: Documentation
    url: https://docs.dmarket.com/v1/swagger.html
  - type: APIReference
    url: https://docs.dmarket.com/v1/swagger.html
  - type: Authentication
    url: authentication/dmarket-authentication.yml
  - type: Conventions
    url: conventions/dmarket-conventions.yml
  - type: ErrorCatalog
    url: errors/dmarket-problem-types.yml
  - type: Lifecycle
    url: lifecycle/dmarket-lifecycle.yml
  - type: DataModel
    url: data-model/dmarket-data-model.yml
  - type: Conformance
    url: conformance/dmarket-conformance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://dmarket.com/blog/index.xml
  type: BlogRSS
- type: Overlay
  url: overlays/dmarket-trading-overlay.yaml
- type: DomainSecurity
  url: security/dmarket-domain-security.yml
- type: Authentication
  url: authentication/dmarket-authentication.yml
- type: Packages
  url: packages/dmarket-packages.yml
- type: SDKs
  url: packages/dmarket-packages.yml
- type: X-MCPServerCandidate
  url: mcp/dmarket-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/dmarket-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Website
  url: https://dmarket.com/ingame-items/item-list/csgo-skins
- type: DeveloperPortal
  url: https://dmarket.com/trading-api
- type: Documentation
  url: https://docs.dmarket.com/v1/swagger.html
- type: APIReference
  url: https://docs.dmarket.com/v1/swagger.html
- type: GettingStarted
  url: https://dmarket.com/faq#tradingAPI
- type: Support
  url: https://dmarket.com/faq
- type: Blog
  url: https://dmarket.com/blog
- type: GitHubOrganization
  url: https://github.com/dmarket
- type: Pricing
  url: https://dmarket.com/pricing
- type: SignUp
  url: https://dmarket.com/sign-in
- type: TermsOfService
  url: https://dmarket.com/terms-of-use
- type: PrivacyPolicy
  url: https://dmarket.com/privacy-policy
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

DMarket API — frequently asked questions

Does DMarket have an API?

Yes. APIs.io lists 6 APIs from DMarket, including DMarket Account API, DMarket Aggregator API and DMarket Buy items API, and 3 more.

Is there an OpenAPI specification for the DMarket API?

Yes. APIs.io indexes 6 OpenAPI specifications for DMarket, each linked for download from this page.

How do I authenticate with the DMarket API?

DMarket uses bearer-token authentication (apiKey · 3 schemes). The details are profiled on APIs.io as Dmarket Authentication.

Is the DMarket API ready for AI agents?

DMarket has a Kin Score of 37.0 out of 100 (thin) and an Agent Readiness score of 28.7 (agent-ready), scored by API Evangelist on 2026-11-06.

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