Head to head · Ads reporting · October 2026 research run
LinkedIn Marketing APIs vs Microsoft Advertising API
LinkedIn Marketing APIs scores 62.4 (B) on agent readiness against Microsoft Advertising API's 60.3 (C), and leads in 4 of 7 scored categories. Microsoft Advertising API leads on schema & documentation. Both do ads reporting.
Which one, for what
Good for An agent that reports on and manages LinkedIn campaigns for accounts its operator administers, especially read-only reporting, which has no account limit on Development tier.
Ahead on
- Reliability, 66 against 60
- Security & auth, 66 against 60
- Transparency & trust, 84 against 64
Watch for
Standard rate limits are not published. An app sees its limit in the Developer Portal only after calling the endpoint
Good for Agents that manage or report on Microsoft Advertising accounts, including Google Ads imports.
Ahead on
- Schema & documentation, 79 against 66
Also in its favour
- A hosted endpoint, with nothing to install
Watch for
Call-rate limits carry no numbers. The docs describe a 60-second sliding window, and call the Bulk and Reporting limits internal and subject to change
Score by category
| Category | Weight this run | LinkedIn Marketing APIs | Microsoft Advertising API | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 66 | 60 | LinkedIn Marketing APIs +6 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 66 | 79 | Microsoft Advertising API +13 |
| Agent ergonomics | 13%16.2 | 63 | 63 | even |
| Security & auth | 14%17.5 | 66 | 60 | LinkedIn Marketing APIs +6 |
| Payments & pricing | 10%12.5 | 30 | 30 | even |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 64 | 61 | LinkedIn Marketing APIs +3 |
| Transparency & trust | 7%8.8 | 84 | 64 | LinkedIn Marketing APIs +20 |
| Negative events | ≤15 | 0 | 0 | |
| Total | 62.4 · B | 60.3 · C |
Facts side by side
| Fact | LinkedIn Marketing APIs | Microsoft Advertising API |
|---|---|---|
| Kind | HTTP API | HTTP API |
| Vendor | LinkedIn Corporation | Microsoft |
| Hosted endpoint | no (local only) | https://campaign.api.bingads.microsoft.com/CampaignManagement/v13 |
| Transports | HTTP | HTTP |
| Auth | OAuth | OAuth |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | Proprietary service under the LinkedIn API terms of use and the Marketing API terms. The beta Python and JavaScript clients carry LinkedIn's API development software licence | Proprietary service. The .NET, Java, Python and PHP SDKs are MIT |
| Tools exposed | none | 7 |
| Read-only variant documented | yes | yes |
| llms.txt | no | no |
| Last release | 2026-09-16 | 2026-09-29 |
| Terms last updated | couldn't be read | couldn't be read |
| Privacy policy last updated | couldn't be read | 2026-09-01 |
| Customer content may train models | couldn't be read | yes |
| Terms restrict automated access | couldn't be read | couldn't be read |
| Terms restrict benchmarking | couldn't be read | couldn't be read |
| Terms or service can change without notice | couldn't be read | couldn't be read |
| Arbitration or class-action waiver | couldn't be read | couldn't be read |
| Popularity | 25k npm/wk, 386k PyPI/wk | 128 stars, 19k PyPI/wk |
Verdicts
LinkedIn Marketing APIs
Monthly API versions are each supported for at least a year, with dated sunsets and a changelog, and a test ad account lets an agent create campaigns that are never served or billed. Access needs LinkedIn's approval and a member's OAuth consent, standard rate limits are not published, and no OpenAPI specification was found.
Microsoft Advertising API
Version 13 covers campaigns, budgets, audiences, ads and reports over REST with JSON, with a sandbox that needs no payment method and four official SDKs. Call-rate limits are unpublished, no public OpenAPI file or idempotency key was found, and one OAuth scope covers every operation. The SOAP interface retires on 31 January 2027.
Before you call either
LinkedIn Marketing APIs
- Send
Linkedin-Version: YYYYMMandX-Restli-Protocol-Version: 2.0.0on every call. A missing or sunset version returns an error (426 for a deprecated one) - Create one test ad account with
"test": trueand build there first. Its creatives are auto-rejected and never billed, and it returns no reporting data - Create campaigns as DRAFT or PAUSED and check
servingStatusesbefore activating. Some validation is postponed until activation - Pass
fields=on adAnalytics. Responses stop at 15,000 elements and the endpoint throttles at 45 million metric values per 5 minutes - On Development tier, map each ad account to the app in the Developer Portal. Edits are limited to five accounts
Microsoft Advertising API
- Build and test against the sandbox hosts (
*.api.sandbox.bingads.microsoft.com) with developer token BBD37VB98. Sandbox and production credentials are separate - Send
Authorization: Bearer <token>,DeveloperToken,CustomerIdandCustomerAccountIdon REST calls. Use the account ID, never the eight-character account number - Create campaigns with
Statusset toPaused, then read them back before activating. No validate-only mode was found - On error 117 (CallRateExceeded) wait 60 seconds. On Bulk error 4204 wait up to 15 minutes
- Read
PartialErrorson every add, update and delete. A call can succeed for some items and fail for others
Questions
Which is better for AI agents, LinkedIn Marketing APIs or Microsoft Advertising API?
LinkedIn Marketing APIs scores 62.4 (B) on agent readiness against Microsoft Advertising API's 60.3 (C), and leads in 4 of 7 scored categories. Microsoft Advertising API leads on schema & documentation.
Do LinkedIn Marketing APIs and Microsoft Advertising API need an API key?
Both use an OAuth sign-in.
Can an agent call LinkedIn Marketing APIs and Microsoft Advertising API without installing anything?
No hosted endpoint is listed for LinkedIn Marketing APIs. Microsoft Advertising API has a hosted endpoint at https://campaign.api.bingads.microsoft.com/CampaignManagement/v13.
Other comparisons with LinkedIn Marketing APIs or Microsoft Advertising API
Machine-readable
- This page as Markdown
/compare/linkedin-marketing-api-vs-microsoft-advertising-api.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/linkedin-marketing-api.json·/api/v1/tools/microsoft-advertising-api.json - From a terminal
anchor compare linkedin-marketing-api microsoft-advertising-api(the CLI) - Over MCP
compare_tools {"a": "linkedin-marketing-api", "b": "microsoft-advertising-api"}at/mcp, no key