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Ultravioleta DAO Services API

The Services API from Ultravioleta DAO — 5 operation(s) for services.

Ultravioleta DAO Services API is one of 40 APIs that Ultravioleta DAO publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Services. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, authentication docs, and rate-limit docs.

This API exposes 7 operations across 5 paths, and defines 12 schemas. It is described by OpenAPI 3.2.0, at version 2.0.0.

Requests are made against 2 base URLs: https://api.execution.market, http://localhost:8000.

7 operations 5 paths 12 schemas 4 GET1 PATCH2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0.0
Base URL
https://api.execution.market
Authentication
API Key, API Key, OAuth 2.0, API Key, API Key
License
Resource Areas
1

Authentication & Security 5

Ultravioleta DAO Services API declares 5 security schemes for authenticating requests. An API key is passed in the header as Signature-Input (erc8128). An API key is passed in the header as X-EM-Session (walletSession). It supports OAuth 2.0 (oauthBearer) using the authorizationCode flow, exposing 9 scopes. An API key is passed in the header as X-EM-Approval (releaseApproval). An API key is passed in the header as X-Payment-Auth (x402Payment). By default, every request must be authenticated.

  • erc8128 — ERC-8128 (RFC 9421 HTTP Message Signatures). Requires the Signature + Signature-Input + Content-Digest headers, with a nonce from GET /api/v1/auth/erc8128/nonc…
  • walletSession — Signed session (walletsession). A SessionGrant this server builds at POST /api/v1/auth/session/challenge, signed by the wallet and replayed verbatim. For clien…
  • oauthBearer — OAuth 2.1 for third-party MCP clients, with no prior agreement: discover, register (or use a Client ID Metadata Document), sign in with your wallet, get a toke…
  • releaseApproval — Per-operation EIP-712 ReleaseApproval naming ONE submission. Required to approve when the principal authenticated with walletsession, because approve releases…
  • x402Payment — x402 payment authorization — the agent's signed EIP-3009 ReceiveWithAuthorization that funds the task escrow. Required on paid operations; the server never sig…

Paths & Operations 7

Across 5 paths, the API surfaces 7 operations — 4 GET, 1 PATCH, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Services 7
POST
/api/v1/services
Create a service listing (advertising, no escrow)
create_service_listing_api_v1_services_post body → 201422
GET
/api/v1/services
Browse active service listings
list_service_listings_api_v1_services_get 9 params → 200422
GET
/api/v1/services/mine
My own service listings (paused ones included)
list_my_service_listings_api_v1_services_mine_get 1 param → 200422
GET
/api/v1/services/{listing_id}
Get a service listing
get_service_listing_api_v1_services__listing_id__get 1 param → 200422
PATCH
/api/v1/services/{listing_id}
Update a service listing (owner only)
update_service_listing_api_v1_services__listing_id__patch 1 param body → 200422
GET
/api/v1/services/match/for-task/{task_id}
Sellers who already offer what a task asks for
match_sellers_for_task_api_v1_services_match_for_task__task_id__get 2 params → 200422
POST
/api/v1/services/{listing_id}/order
Order a service listing (creates escrowed demand-side task)
order_service_api_v1_services__listing_id__order_post 1 param body → 200422

Schemas 12

The contract defines 12 schemas that model the data the API accepts and returns. The most detailed are ServiceListingResponse (21 properties), JevSellerVeto (8 properties), CreateServiceListingRequest (8 properties), OrderServiceResponse (7 properties). Each schema is shown below with its type and property counts.

JevSellerVeto
object
Jev's C4 second opinion on a seller. A MARK, never a decision. Present only when EMJEVVETOC4ENABLED is on AND Jev answered inside its 2 s budget. Absent is not…
8 properties 5 required
ServiceListingListResponse
object
Paginated list of service listings.
5 properties 3 required
SellerCorrelation
object
How diversified a seller's completed history is (advisory). The reputation score alone cannot separate 100 tasks across a hundred buyers from 100 tasks with a…
4 properties 4 required
CreateServiceListingRequest
object
Request to create a service listing (seller-authenticated). NO escrow and no funds move here — this is advertising only. The seller is bound to the authenticat…
8 properties 4 required
TaskCategory
string
Categories of tasks that executors can complete.
ValidationError
object
5 properties 3 required
SellerReputation
object
Read-only, public seller reputation surfaced on browse/detail.
7 properties 1 required
ServiceListingResponse
object
A single service listing.
21 properties 10 required
HTTPValidationError
object
1 property
OrderServiceResponse
object
Result of ordering a service listing — mirrors the under-the-hood escrowed demand-side task+assignment.
7 properties 7 required
UpdateServiceListingRequest
object
Request to update a service listing (owner-only). All fields optional; only the provided fields change. availability toggles active|paused.
6 properties
OrderServiceRequest
object
Request to order a service listing (buyer-authenticated). This is the only money-moving step — the buyer MUST carry an X-Payment-Auth header (escrow authorizat…
4 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

execution-market-services-api-openapi.yml Raw ↑

Other APIs Ultravioleta DAO publishes across the network.

Execution Market MCP Server
Execution Market A2A Agent
Ultravioleta DAO A2A API
Ultravioleta DAO A2A Discovery API
Ultravioleta DAO A2A Protocol API
Ultravioleta DAO Account API
Ultravioleta DAO Agent Auth API
Ultravioleta DAO Arbiter As A Service API
Ultravioleta DAO Audit API
Ultravioleta DAO Disputes API
Ultravioleta DAO ENS API
Ultravioleta DAO Escrow API
Where this information came from

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