rtblint - IAB OpenRTB validator and linter

OpenRTB validation MCP server for real-time bidding.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Validate Bid Request: Validate an OpenRTB 2.x bid request JSON payload against a tracked spec version. Returns structured issues with rule ids, severities, and JSON paths.
  • Validate Bid Response: Validate an OpenRTB 2.x bid response JSON payload. Optionally cross-validate against the originating bid request.
  • Validate Artf Request: Validate an ARTF RTBRequest envelope plus the OpenRTB payloads it carries.

What data it sees

Do you need an account

No: the server works without sign-in

OpenRTB validation MCP server for real-time bidding. Every auction is a JSON bid request and bid response; payloads that fail the spec lose impressions, break deals, and desync SSPs from DSPs.

Validates OpenRTB 2.x bid requests and responses against versioned IAB Tech Lab snapshots (2.0 through 2.6-202606), JSON dialects, and ARTF envelopes and mutation sets. Tools: validate_bid_request, validate_bid_response, validate_artf_request, validate_artf_response, list_openrtb_versions, get_adcp_capabilities. Hosted at https://rtblint.org/mcp.

How to connect

How to connect rtblint - IAB OpenRTB validator and linter to Claude

The server address to paste into Claude settings:

https://rtblint--aleksander.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect rtblint - IAB OpenRTB validator and linter to ChatGPT

The server address to paste into ChatGPT settings:

https://rtblint--aleksander.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect rtblint - IAB OpenRTB validator and linter to Cursor

The server address to paste into Cursor settings:

https://rtblint--aleksander.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

validate_bid_requestValidate an OpenRTB 2.x bid request JSON payload against a tracked spec version. Returns structured issues with rule ids, severities, and JSON paths.
validate_bid_responseValidate an OpenRTB 2.x bid response JSON payload. Optionally cross-validate against the originating bid request.
validate_artf_requestValidate an ARTF RTBRequest envelope plus the OpenRTB payloads it carries.
validate_artf_responseValidate an ARTF RTBResponse mutation set against the RTBRequest it answers. apply=true writes the mutations and revalidates.
list_openrtb_versionsList every OpenRTB version id this build can validate against, from 2.0 through the monthly 2.6 snapshots.
get_adcp_capabilitiesAdCP protocol discovery. Declares the experimental measurement protocol and bid-stream conformance metrics.