Gameflip

Gameflip is a digital marketplace where gamers buy and sell games, in-game items, gift cards, game accounts, boosting/coaching gigs, and other digital goods, backed by an escrow-style buyer guarantee and a built-in wallet. For developers and power sellers, Gameflip publishes the GFAPI — a JSON REST API (base path /api/v1) for creating and managing listings, searching the marketplace, running exchanges (sell/buy records), reading account profiles and wallet history, and handling Steam item escrow and bulk trade-offer listings. Requests are authenticated with an API key plus a rotating TOTP one-time password sent in the Authorization header (`GFAPI :`). Access is Beta and gated: API keys and TOTP secrets are issued to selected developers through Gameflip support / account settings. An official Node.js client library (gfapi) with sample code is published by Gameflip.

Gameflip publishes 6 API contracts indexed on the APIs.io network, including Account API, Exchange API, Listing API, and 3 more. Tagged areas include Company, Gaming, Marketplace, Digital Goods, and E-Commerce.

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

Gameflip’s developer surface includes getting-started guide, documentation, API reference, support, engineering blog, signup flow, authentication, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.1/100 thin ▬ flat Agent 26/100 agent aware Front door AI 1/6 silent Heartbeat 63/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 2 Agent Skills

Company Gaming Marketplace Digital Goods E-Commerce Payments Wallets Listings Steam Gift Cards

Kin Score

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

Composite quality — 36.1/100 · thin

Contract Quality 3.1 / 19

Developer Ergonomics 9.6 / 15

Access Clarity 5.1 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · agent aware

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 0 / 7

Rate-Limit Signaling 7 / 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 Payments regime, 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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
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):

Contract Quality scores 16.7 — up to +20.8 composite points
Access Clarity scores 34.2 — up to +13.2 composite points
Operational Transparency scores 23.7 — up to +9.9 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/gameflip/apis.yml: open an issue on github.com/api-evangelist/gameflip 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.

Gameflip Account API

Account and wallet service.

Gameflip Exchange API

Create and manage sell/buy records (exchanges).

Gameflip Listing API

Create and manipulate listings of items for sale.

Gameflip Profile API

Account profile service.

Gameflip Steam Bulk API

Create listings/escrow for multiple Steam items with one trade offer.

Gameflip Steam Escrow API

Escrow Steam items.

Open Collections 6

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

Gameflip API (GFAPI) Account API

OPEN COLLECTION

Gameflip API (GFAPI) Account Exchange API

OPEN COLLECTION

Gameflip API (GFAPI) Account Listing API

OPEN COLLECTION

Gameflip API (GFAPI) Account Profile API

OPEN COLLECTION

Gameflip API (GFAPI) Account Steam Bulk API

OPEN COLLECTION

Gameflip API (GFAPI) Account Steam Escrow API

OPEN COLLECTION

Agent Skills 2

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

Create a listing and put it up for sale

AGENT SKILL

Search the marketplace and buy via an exchange

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Gameflip Rate Limits

1 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Gameflip API Rules

65 rules · 63 errors 1 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.

Gameflip Gfapi Overlay

3 actions · update · gameflip-gfapi-openapi.yml

DERIVED

Security Posture 2

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

Gameflip Authentication

apiKey · 1 scheme

SECURITY

Gameflip Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

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

AgentSkill

AgentSkill

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: gameflip
name: Gameflip
description: 'Gameflip is a digital marketplace where gamers buy and sell games, in-game items, gift cards, game accounts,
  boosting/coaching gigs, and other digital goods, backed by an escrow-style buyer guarantee and a built-in wallet. For developers
  and power sellers, Gameflip publishes the GFAPI — a JSON REST API (base path /api/v1) for creating and managing listings,
  searching the marketplace, running exchanges (sell/buy records), reading account profiles and wallet history, and handling
  Steam item escrow and bulk trade-offer listings. Requests are authenticated with an API key plus a rotating TOTP one-time
  password sent in the Authorization header (`GFAPI <apikey>:<totp>`). Access is Beta and gated: API keys and TOTP secrets
  are issued to selected developers through Gameflip support / account settings. An official Node.js client library (gfapi)
  with sample code is published by Gameflip.'
url: https://raw.githubusercontent.com/api-evangelist/gameflip/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- bullpen-capital
x-tier: stub
x-tier-reason: portfolio-lead
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
  - rate-limits
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://gameflip.com/img/app/gf_logo_280x150.jpg
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Gaming
- Marketplace
- Digital Goods
- E-Commerce
- Payments
- Wallets
- Listings
- Steam
- Gift Cards
tags_raw:
- Company
- Gaming
- Marketplace
- Digital Goods
- E-Commerce
- Payments
- Wallet
- Listings
- Steam
- Gift Cards
apis:
- aid: gameflip:gameflip-account-api
  name: Gameflip Account API
  description: Account and wallet service.
  humanURL: https://gameflip.github.io/gfapi/
  baseURL: https://production-gameflip.fingershock.com/api/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/gameflip-account-api-openapi.yml
  - type: RateLimits
    url: rate-limits/gameflip-rate-limits.yml
  - type: Documentation
    url: https://gameflip.github.io/gfapi/
  - type: APIReference
    url: https://gameflip.github.io/gfapi/
  - type: Authentication
    url: authentication/gameflip-authentication.yml
  - type: Conventions
    url: conventions/gameflip-conventions.yml
  - type: ErrorCatalog
    url: errors/gameflip-error-codes.yml
  - type: DataModel
    url: data-model/gameflip-data-model.yml
  - type: Lifecycle
    url: lifecycle/gameflip-lifecycle.yml
  - type: Conformance
    url: conformance/gameflip-conformance.yml
  - type: Sandbox
    url: sandbox/gameflip-sandbox.yml
- aid: gameflip:gameflip-exchange-api
  name: Gameflip Exchange API
  description: Create and manage sell/buy records (exchanges).
  humanURL: https://gameflip.github.io/gfapi/
  baseURL: https://production-gameflip.fingershock.com/api/v1
  tags:
  - Exchange
  properties:
  - type: OpenAPI
    url: openapi/gameflip-exchange-api-openapi.yml
  - type: RateLimits
    url: rate-limits/gameflip-rate-limits.yml
  - type: Documentation
    url: https://gameflip.github.io/gfapi/
  - type: APIReference
    url: https://gameflip.github.io/gfapi/
  - type: Authentication
    url: authentication/gameflip-authentication.yml
  - type: Conventions
    url: conventions/gameflip-conventions.yml
  - type: ErrorCatalog
    url: errors/gameflip-error-codes.yml
  - type: DataModel
    url: data-model/gameflip-data-model.yml
  - type: Lifecycle
    url: lifecycle/gameflip-lifecycle.yml
  - type: Conformance
    url: conformance/gameflip-conformance.yml
  - type: Sandbox
    url: sandbox/gameflip-sandbox.yml
- aid: gameflip:gameflip-listing-api
  name: Gameflip Listing API
  description: Create and manipulate listings of items for sale.
  humanURL: https://gameflip.github.io/gfapi/
  baseURL: https://production-gameflip.fingershock.com/api/v1
  tags:
  - Listings
  tags_raw:
  - Listing
  properties:
  - type: OpenAPI
    url: openapi/gameflip-listing-api-openapi.yml
  - type: RateLimits
    url: rate-limits/gameflip-rate-limits.yml
  - type: Documentation
    url: https://gameflip.github.io/gfapi/
  - type: APIReference
    url: https://gameflip.github.io/gfapi/
  - type: Authentication
    url: authentication/gameflip-authentication.yml
  - type: Conventions
    url: conventions/gameflip-conventions.yml
  - type: ErrorCatalog
    url: errors/gameflip-error-codes.yml
  - type: DataModel
    url: data-model/gameflip-data-model.yml
  - type: Lifecycle
    url: lifecycle/gameflip-lifecycle.yml
  - type: Conformance
    url: conformance/gameflip-conformance.yml
  - type: Sandbox
    url: sandbox/gameflip-sandbox.yml
- aid: gameflip:gameflip-profile-api
  name: Gameflip Profile API
  description: Account profile service.
  humanURL: https://gameflip.github.io/gfapi/
  baseURL: https://production-gameflip.fingershock.com/api/v1
  tags:
  - Profiles
  tags_raw:
  - Profile
  properties:
  - type: OpenAPI
    url: openapi/gameflip-profile-api-openapi.yml
  - type: RateLimits
    url: rate-limits/gameflip-rate-limits.yml
  - type: Documentation
    url: https://gameflip.github.io/gfapi/
  - type: APIReference
    url: https://gameflip.github.io/gfapi/
  - type: Authentication
    url: authentication/gameflip-authentication.yml
  - type: Conventions
    url: conventions/gameflip-conventions.yml
  - type: ErrorCatalog
    url: errors/gameflip-error-codes.yml
  - type: DataModel
    url: data-model/gameflip-data-model.yml
  - type: Lifecycle
    url: lifecycle/gameflip-lifecycle.yml
  - type: Conformance
    url: conformance/gameflip-conformance.yml
  - type: Sandbox
    url: sandbox/gameflip-sandbox.yml
- aid: gameflip:gameflip-steam-bulk-api
  name: Gameflip Steam Bulk API
  description: Create listings/escrow for multiple Steam items with one trade offer.
  humanURL: https://gameflip.github.io/gfapi/
  baseURL: https://production-gameflip.fingershock.com/api/v1
  tags:
  - Steam Bulk
  properties:
  - type: OpenAPI
    url: openapi/gameflip-steam-bulk-api-openapi.yml
  - type: RateLimits
    url: rate-limits/gameflip-rate-limits.yml
  - type: Documentation
    url: https://gameflip.github.io/gfapi/
  - type: APIReference
    url: https://gameflip.github.io/gfapi/
  - type: Authentication
    url: authentication/gameflip-authentication.yml
  - type: Conventions
    url: conventions/gameflip-conventions.yml
  - type: ErrorCatalog
    url: errors/gameflip-error-codes.yml
  - type: DataModel
    url: data-model/gameflip-data-model.yml
  - type: Lifecycle
    url: lifecycle/gameflip-lifecycle.yml
  - type: Conformance
    url: conformance/gameflip-conformance.yml
  - type: Sandbox
    url: sandbox/gameflip-sandbox.yml
- aid: gameflip:gameflip-steam-escrow-api
  name: Gameflip Steam Escrow API
  description: Escrow Steam items.
  humanURL: https://gameflip.github.io/gfapi/
  baseURL: https://production-gameflip.fingershock.com/api/v1
  tags:
  - Steam Escrow
  properties:
  - type: OpenAPI
    url: openapi/gameflip-steam-escrow-api-openapi.yml
  - type: RateLimits
    url: rate-limits/gameflip-rate-limits.yml
  - type: Documentation
    url: https://gameflip.github.io/gfapi/
  - type: APIReference
    url: https://gameflip.github.io/gfapi/
  - type: Authentication
    url: authentication/gameflip-authentication.yml
  - type: Conventions
    url: conventions/gameflip-conventions.yml
  - type: ErrorCatalog
    url: errors/gameflip-error-codes.yml
  - type: DataModel
    url: data-model/gameflip-data-model.yml
  - type: Lifecycle
    url: lifecycle/gameflip-lifecycle.yml
  - type: Conformance
    url: conformance/gameflip-conformance.yml
  - type: Sandbox
    url: sandbox/gameflip-sandbox.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/gameflip-rate-limits.yml
- type: AgentSkill
  url: skills/gameflip-create-and-sell.md
- type: X-MCPServerCandidate
  url: mcp/gameflip-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: Overlay
  url: overlays/gameflip-gfapi-overlay.yaml
- type: Website
  url: https://gameflip.com
- type: GettingStarted
  url: https://gameflip.github.io/gfapi/
- type: Documentation
  url: https://gameflip.github.io/gfapi/
- type: APIReference
  url: https://gameflip.github.io/gfapi/
- type: SDKs
  url: packages/gameflip-packages.yml
- type: Packages
  url: packages/gameflip-packages.yml
- type: GitHubOrganization
  url: https://github.com/gameflip
- type: Support
  url: https://support.gameflip.com/hc/en-us
- type: Blog
  url: https://gameflip.com/blog
- type: SignUp
  url: https://gameflip.com/login
- type: TermsOfService
  url: https://gameflip.com/about/terms
- type: PrivacyPolicy
  url: https://gameflip.com/about/privacy
- type: Authentication
  url: authentication/gameflip-authentication.yml
- type: Conventions
  url: conventions/gameflip-conventions.yml
- type: DomainSecurity
  url: security/gameflip-domain-security.yml
- type: LLMsTxt
  url: llms/gameflip-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Gameflip API — frequently asked questions

Does Gameflip have an API?

Yes. APIs.io lists 6 APIs from Gameflip, including Gameflip Account API, Gameflip Exchange API and Gameflip Listing API, and 3 more.

Is there an OpenAPI specification for the Gameflip API?

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

How do I authenticate with the Gameflip API?

Gameflip uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Gameflip Authentication.

Is the Gameflip API ready for AI agents?

Gameflip has a Kin Score of 36.1 out of 100 (thin) and an Agent Readiness score of 26.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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