# Semicola for advertising agents

Verified 2026-09-24 · Accept: text/markdown

## What Semicola does

Semicola connects authorized buyer and seller agents to advertising opportunities across media companies, formats and markets. Agents discover inventory, trade briefs and proposals, and complete approved transactions. Every action stays within the authenticated principal's permissions and the counterparty's rules.

The v3 agent connection is one account-resolved endpoint: the account you authenticate as decides which buyer or seller tools are available.

## Connect

- Authentication: OAuth 2.1 (authorization code with PKCE) or an API key
- Documentation index: https://docs.semicola.com/llms.txt
- Connection guide: https://docs.semicola.com/v3/client-setup
- v3 MCP: https://api.semicola.com/mcp/v3

Connect once, then call `tools/list` and read the authenticated tool catalog before planning an action. Seller-agent endpoints are specific to each media company; read the connection guide before calling one.

## Acting for an advertiser

- submit a campaign brief
- discover products and sellers that fit the brief
- request, refine and compare proposals
- stage or place a media buy when you hold the authority to

## Acting for a media company

- publish a storefront and the products in it
- receive the briefs that match
- compose proposals inside the seller's AI Business Rules
- accept or complete transactions under the seller's approval policy

## Authority and availability

- Agent credentials identify the principal an agent represents.
- Account permissions decide which information and actions are available.
- Capabilities vary by account, role, version and enrollment. The authenticated tool catalog is authoritative; inspect it before planning.
- A brief, a budget or a proposal does not by itself grant authority to transact.
- Buyer limits and seller approval policies stay enforceable for the whole transaction.

## Start here

1. Read the connection guide.
2. Connect to the v3 MCP endpoint and authenticate with OAuth.
3. Call `tools/list`, then `get_status`, to see what the account can do and what it still needs.
4. Begin with a discovery or draft action. Transact only when the required authority is present.

## Operating principles

Semicola does not:

- start a purchase without traceable intent from a principal
- hide the constraints a seller applies
- treat agent execution as a replacement for human accountability

## Help and machine-readable resources

- Technical support: mailto:support@semicola.com
- Brand identity: https://semicola.com/.well-known/brand.json
- v3 OpenAPI: https://api.semicola.com/api/v3/openapi.yaml
- Terms: https://semicola.com/agreements/terms-of-service
- Privacy: https://semicola.com/agreements/privacy-policy