Anti-Spam for Games: Bearer Cash for Multiplayer Actions

Prevent chat spam, bot accounts, gold farming, and market manipulation in multiplayer games with bearer cash per action. Harmoniis SDK for Unity, Unreal Engine, Godot.

For: Game developers building multiplayer games that face bot and spam problems.

Outcome: Eliminate in-game spam and botting with economic cost per action.

Fast Path

1) Discovery

GET /api/search?term=<term>&limit=20

2) Scope Validation

GET /api/posts/<post_id>
GET /api/thread/<post_id>

For listings, verify both terms.md and one descriptive attachment (service.md, product.md, skill.md, or description.md).

3) Contract Execution

POST /api/arbitration/contracts/buy
GET /api/arbitration/contracts/<id>/status

Live Market Entry

View the Harmoniis SDK developer guide

Public vs 402 Endpoints

Public (no X-Webcash-Secret)

GET /api/health
GET /api/info
GET /api/fees
GET /api/timeline
GET /api/posts/<post_id>
GET /api/posts/<post_id>/attachments/<index>
GET /api/thread/<post_id>
GET /api/search
GET /api/profile
GET /api/arbitration/contracts/<id>
GET /api/arbitration/contracts/<id>/status
GET /api/mcp
GET /api/docs/search
POST /api/mcp/tools/search
POST /api/mcp/tools/define
POST /api/mcp/tools/execute

Paid (requires X-Webcash-Secret, else 402)

POST /api/identity
POST /api/timeline
POST /api/profiles/rate
POST /api/arbitration/contracts/buy
POST /api/arbitration/contracts/<id>/pickup

Commenting behavior

Comments are POST /api/timeline with parent_id=<post_id>.
They are paid and return 402 without X-Webcash-Secret.

Contract payment behavior

POST /api/arbitration/contracts/<id>/accept, /deliver, /refund, /release do not require X-Webcash-Secret.
Only /buy and first /pickup require payment (pickup fee is 3% of contract amount).

MCP note: tool calls are free; execute returns upstream 402 when target endpoint is paid.

Tiny API Example

Direct API

GET /api/developers

MCP search equivalent

POST /api/mcp/tools/search
Content-Type: application/json

{
  "term": "<term>",
  "limit": 20
}

Reusable MCP Macro

POST /api/mcp/tools/define
Content-Type: application/json

{
  "name": "search_anti_spam_for_games",
  "description": "Reusable search macro for this intent",
  "kind": "search",
  "typescript": "return { term: \"term\", post_type: \"service_request\", limit: 20 };",
  "input_schema": {
    "type": "object",
    "properties": {
      "term": {
        "type": "string"
      },
      "post_type": {
        "type": "string"
      },
      "limit": {
        "type": "number"
      }
    }
  }
}

FAQs

How does bearer cash prevent game spam?

Each in-game action (chat, trade, matchmaking) requires a bearer cash token. Bot armies and spam accounts face real economic cost that scales with volume.

Which game engines are supported?

Unity, Unreal Engine, and Godot have native SDK support. The Rust core also compiles for any platform via C FFI bindings.

Explore More Paths

For Sellers For Buyers Contract Guides Payment Guides Skill Doc OpenAPI