# Set up a DSP advertiser This is how you get a DSP advertiser set up on the [MixShift DSP seat](/amazon-dsp). MixShift creates the advertiser. Amazon invites your team to manage it. You run the campaigns. You do not give MixShift access to your Seller Central, Vendor Central or Sponsored Ads accounts. A longer walkthrough of access routes and the fee stack is in [Self-serve Amazon DSP: four ways onto a seat](/blog/self-serve-amazon-dsp-access-routes) and [Amazon DSP minimum spend](/blog/amazon-dsp-minimum-spend). ## Before you start Have these ready. The form on [Amazon DSP access](/amazon-dsp) is one advertiser per submission and takes about five minutes. - Organization type (agency setting up DSP for a client, or a brand setting up DSP for itself), organization name, your name and email. - Advertiser name, as it should appear in the DSP console, and a website that clearly belongs to that advertiser. MixShift's guidance is that a mismatch can trigger an Amazon manual review. - Industry, country, currency and timezone. Country sets the currency and timezone defaults, and the AMC region. - **Seller Central merchant token**, if the brand sells through Seller Central, including pre-launch. Find it in Seller Central under Settings, then Account Info, then Business Information, then Your Merchant Token. It starts with A. If the brand is Vendor Central only, leave the token blank and confirm that on the form. - **Sponsored Ads entity ID**, when AMC is on (it is included at no extra cost and is on by default). Find it in the Sponsored Ads campaign manager URL, as the `entityId=` value, which starts with ENTITY. - DSP billing contact (name, address, phone, email) for the Amazon invoice: media, the Amazon DSP platform fee, and any audience fees. - Primary login email for whoever will run campaigns, plus optional additional team members at Admin, Edit or View. - MixShift fee billing contact for the $500 per month Stripe invoice, if it should differ from the submitter. The merchant token and the entity ID are not the same value. Do not paste one into the other field. ## What MixShift does with each ID - **Merchant token.** MixShift applies it to the DSP account at creation time. You cannot link the selling account in advertiser settings yourself; that path is vendor-only. If the token is missing or wrong, contact MixShift and we can apply it. - **Entity ID.** AMC linking is a separate step from applying the merchant token. MixShift (or the MixShift app) does that linking with MixShift auth, using the entity ID you provide. You do not complete AMC linking in the Amazon console yourself. Amazon requires a merchant token in advertiser settings for a seller, and attributes a conversion to no more than one ad interaction across campaigns and advertisers. ## The five steps 1. **Submit the form** on [Amazon DSP access](/amazon-dsp). A confirmation email goes out when it lands. 2. **MixShift creates the advertiser** on the seat within one business day. The merchant token, when you provided one, is applied at creation. If you left AMC on, MixShift starts the AMC linking step. 3. **Review and pay.** MixShift emails a review-and-pay link with the live advertiser record. Check the name, website, marketplace, merchant token and entity ID before you pay. The first invoice is prorated for the current month and due on receipt. Stripe checkout collects the $500 per month access fee. There is no annual contract and no minimum spend. 4. **Accept the Amazon invite.** The invite goes out after the first invoice is paid, not before. Amazon emails the primary login email. The welcome screen tells you to look for a message from no-reply@amazon.com with the subject "Invitation to Amazon DSP" and a `verifyInvitation` link. We usually send you the invite link too. Additional team members are invited at the access level you chose. 5. **Start running DSP** in the Amazon Ads console. To use [AMC Workspaces](/knowledge-base/amc-workspaces/how-to/use-amc-workspaces), sign in at build.mixshift.ai, connect your Amazon Ads account (admin access to an account that has AMC enabled) and confirm the advertiser. The [MixShift plugin](/knowledge-base/plugin/getting-started/install-the-plugin) and the [Builder Platform](/knowledge-base/builder-platform) can work against the same advertiser once it is connected to your MixShift organization. End to end, form to running campaigns typically takes one business day. ## Common blockers - **The invite did not arrive.** Check spam and the login email for a typo. The invite will not go out until the first invoice is paid. Use the invite link we usually send you as well, or [contact support](/knowledge-base/shared/how-to/contact-support) and we will resend. - **The invite went to the wrong person.** The form defaults the login email to the submitter. For an agency, override it to the operational ads team before you submit. - **Wrong identifier in a field.** Get the merchant token from Seller Central, not from the ads console. Confirm Vendor Central only when that is actually the case. Do not try to link the selling account in advertiser settings after creation. - **Website and advertiser name do not obviously belong together.** Use a site that clearly belongs to the advertiser, or provisioning can be delayed by an Amazon manual review. - **AMC is on, but the entity ID is missing.** The form requires it when AMC is on, because MixShift needs it for the AMC linking step. - **You are moving from another seat.** The form asks. MixShift follows up to attach the old DSP advertiser ID to the new AMC instance, using MixShift auth. ## Fees, kept distinct You get two invoices: - **MixShift access fee:** $500 per month per advertiser, billed through Stripe. Flat. Not a percentage of spend, and not a campaign-management fee. - **Amazon media and fees:** Amazon bills the advertiser directly for media, the Amazon DSP platform fee, and any audience fees. The MixShift seat carries a grandfathered 7.5% Amazon DSP platform fee, which goes to Amazon. An agency's management fee is a third, separate charge, typically 10-20% of spend, billed by the agency to its client. It is not the 7.5% Amazon DSP platform fee and not the MixShift access fee. ## Related - [Amazon DSP access](/amazon-dsp) (the form, calculator and FAQ) - [Self-serve Amazon DSP: four ways onto a seat](/blog/self-serve-amazon-dsp-access-routes) - [Amazon DSP minimum spend](/blog/amazon-dsp-minimum-spend) - [Use AMC Workspaces](/knowledge-base/amc-workspaces/how-to/use-amc-workspaces) - [Pull your DSP reports in Claude](/knowledge-base/dsp-access/how-to/pull-dsp-reports-in-claude) - [Contact MixShift support](/knowledge-base/shared/how-to/contact-support)