# Meta Marketing API vs Microsoft Advertising API

> Meta Marketing API scores 67.7 (B) on agent readiness against Microsoft Advertising API's 60.3 (C), and leads in 5 of 7 scored categories. Both do ads reporting. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-08

Meta Marketing API scores 67.7 (B) on agent readiness against Microsoft Advertising API's 60.3 (C), and leads in 5 of 7 scored categories. Both do ads reporting.

- Meta Marketing API: grade B, 67.7/100, rank #187 of 629. Markdown https://www.anchorterminal.com/tools/meta-marketing-api.md · JSON https://www.anchorterminal.com/api/v1/tools/meta-marketing-api.json
- Microsoft Advertising API: grade C, 60.3/100, rank #360 of 629. Markdown https://www.anchorterminal.com/tools/microsoft-advertising-api.md · JSON https://www.anchorterminal.com/api/v1/tools/microsoft-advertising-api.json

## Which one, for what

### Meta Marketing API (B)

Good for: The direct route to Facebook, Instagram, Messenger, WhatsApp and Threads advertising for reporting, campaign and budget changes, audiences and creatives.

Ahead on:
- Reliability, 80 against 60
- Agent ergonomics, 77 against 63
- Maintenance & community, 74 against 61

Watch for: Default Limited access allows a score of 60 per ad account (read 1, write 3) and blocks for 300 seconds at the limit

### Microsoft Advertising API (C)

Good for: Agents that manage or report on Microsoft Advertising accounts, including Google Ads imports.

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 | Meta Marketing API | Microsoft Advertising API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 80 | 60 | Meta Marketing API +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 79 | Microsoft Advertising API +3 |
| Agent ergonomics | 13% (16.2 this run) | 77 | 63 | Meta Marketing API +14 |
| Security & auth | 14% (17.5 this run) | 61 | 60 | Meta Marketing API +1 |
| Payments & pricing | 10% (12.5 this run) | 30 | 30 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 74 | 61 | Meta Marketing API +13 |
| Transparency & trust | 7% (8.8 this run) | 68 | 64 | Meta Marketing API +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **67.7 · B** | **60.3 · C** | |

## Facts side by side

| Fact | Meta Marketing API | Microsoft Advertising API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Meta Platforms, Inc. | Microsoft |
| Hosted endpoint | `https://graph.facebook.com` | `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 Meta Platform Terms. The Business SDKs and the codegen specs on GitHub carry Meta's own platform licence, which allows use only with Meta's APIs | Proprietary service. The .NET, Java, Python and PHP SDKs are MIT |
| Tools exposed | none | 7 |
| Read-only variant documented | yes | yes |
| llms.txt | yes | no |
| Last release | 2026-09-21 | 2026-09-29 |
| Terms last updated | 2026-02-03 | couldn't be read |
| Privacy policy last updated | couldn't be read | 2026-09-01 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 1.6k stars, 501k npm/wk, 1.1M PyPI/wk | 128 stars, 19k PyPI/wk |

## Verdicts

**Meta Marketing API.** Reporting, campaign, budget, audience and creative endpoints sit behind `ads_read` and `ads_management` scopes, with a `validate_only` option and sandbox ad accounts for checking a change before it spends. New apps are held to a score of 60 per ad account, with a 300-second block at the limit, and the documented requests pass the access token as a parameter.

**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

### Meta Marketing API

1. Put a version in every path, such as /v26.0/act_<AD_ACCOUNT_ID>/campaigns. Unversioned Marketing API calls fail
2. Create campaigns, ad sets and ads with `status=PAUSED`, and send `execution_options=["validate_only"]` first to test a write without making it
3. Ask for `ads_read` alone when the task is reporting. `ads_management` can change budgets and activate spend
4. Read `X-Business-Use-Case-Usage` and `X-Ad-Account-Usage` after each call and wait for `estimated_time_to_regain_access` on errors 17, 613 and 80004
5. Change an ad set budget at most four times an hour and an account spending limit at most ten times a day

### Microsoft Advertising API

1. Build and test against the sandbox hosts (`*.api.sandbox.bingads.microsoft.com`) with developer token BBD37VB98. Sandbox and production credentials are separate
2. Send `Authorization: Bearer <token>`, `DeveloperToken`, `CustomerId` and `CustomerAccountId` on REST calls. Use the account ID, never the eight-character account number
3. Create campaigns with `Status` set to `Paused`, then read them back before activating. No validate-only mode was found
4. On error 117 (CallRateExceeded) wait 60 seconds. On Bulk error 4204 wait up to 15 minutes
5. Read `PartialErrors` on every add, update and delete. A call can succeed for some items and fail for others

## Questions

### Which is better for AI agents, Meta Marketing API or Microsoft Advertising API?

Meta Marketing API scores 67.7 (B) on agent readiness against Microsoft Advertising API's 60.3 (C), and leads in 5 of 7 scored categories.

### Do Meta Marketing API and Microsoft Advertising API need an API key?

Both use an OAuth sign-in.

### Can an agent call Meta Marketing API and Microsoft Advertising API without installing anything?

Yes. Meta Marketing API has a hosted endpoint at https://graph.facebook.com and Microsoft Advertising API at https://campaign.api.bingads.microsoft.com/CampaignManagement/v13.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/meta-marketing-api-vs-microsoft-advertising-api.json, and with the fewest tokens: https://www.anchorterminal.com/compare/meta-marketing-api-vs-microsoft-advertising-api.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "meta-marketing-api", "b": "microsoft-advertising-api"}`. From a terminal: `anchor compare meta-marketing-api microsoft-advertising-api`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/meta-marketing-api.json and https://www.anchorterminal.com/api/v1/tools/microsoft-advertising-api.json

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