# Google Sheets API vs Smartsheet API + MCP

> Google Sheets API scores 76.3 (BB) on agent readiness against Smartsheet API + MCP's 67.6 (B), and leads in 4 of 7 scored categories. Smartsheet API + MCP leads on schema & documentation. Both do sheets read. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/google-sheets-api-vs-smartsheet
- Markdown: https://www.anchorterminal.com/compare/google-sheets-api-vs-smartsheet.md (~2,250 tokens)
- Slim: https://www.anchorterminal.com/compare/google-sheets-api-vs-smartsheet.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/google-sheets-api-vs-smartsheet.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Google Sheets API scores 76.3 (BB) on agent readiness against Smartsheet API + MCP's 67.6 (B), and leads in 4 of 7 scored categories. Smartsheet API + MCP leads on schema & documentation. Both do sheets read.

- Google Sheets API: grade BB, 76.3/100, rank #33 of 629. Markdown https://www.anchorterminal.com/tools/google-sheets-api.md · JSON https://www.anchorterminal.com/api/v1/tools/google-sheets-api.json
- Smartsheet API + MCP: grade B, 67.6/100, rank #190 of 629. Markdown https://www.anchorterminal.com/tools/smartsheet.md · JSON https://www.anchorterminal.com/api/v1/tools/smartsheet.json

## Which one, for what

### Google Sheets API (BB)

Good for: Agents reading and writing cells, formulas and formatting in spreadsheets people already keep in Google Sheets.

Ahead on:
- Reliability, 90 against 65
- Security & auth, 80 against 66
- Payments & pricing, 35 against 20
- Maintenance & community, 85 against 80

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: Quotas are 300 reads and 300 writes a minute per project and 60 each per user per project

### Smartsheet API + MCP (B)

Good for: An agent working inside a company that already runs projects in Smartsheet on a Business plan or above, especially row-level reads and batched writes, workflows and dashboards.

Ahead on:
- Schema & documentation, 88 against 83

Watch for: API and MCP access need a Business plan or higher, from $19 a member a month billed yearly with a three-member minimum


## Score by category

| Category | Weight | Google Sheets API | Smartsheet API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 90 | 65 | Google Sheets API +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 83 | 88 | Smartsheet API + MCP +5 |
| Agent ergonomics | 13% (16.2 this run) | 74 | 74 | even |
| Security & auth | 14% (17.5 this run) | 80 | 66 | Google Sheets API +14 |
| Payments & pricing | 10% (12.5 this run) | 35 | 20 | Google Sheets API +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 80 | Google Sheets API +5 |
| Transparency & trust | 7% (8.8 this run) | 80 | 82 | Smartsheet API + MCP +2 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **76.3 · BB** | **67.6 · B** | |

## Facts side by side

| Fact | Google Sheets API | Smartsheet API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Google | Smartsheet Inc. |
| Hosted endpoint | `https://sheets.googleapis.com/v4` | `https://api.smartsheet.com/2.0` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | OAuth | OAuth or key |
| Pricing | Free | Paid |
| x402 | no | no |
| Licence | Proprietary service under the Google APIs Terms of Service. The client libraries are Apache-2.0 | Proprietary service under Smartsheet's User Agreement and Developer Agreement. The SDKs on GitHub are Apache-2.0 |
| Tools exposed | 6 | 83 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-10-07 | 2026-10-06 |
| Terms last updated | 2021-11-09 | 2021-07-01 |
| Privacy policy last updated | 2026-10-01 | 2026-05-20 |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 12k stars, 1.9M npm/wk, 31.8M PyPI/wk | 82 stars, 47k npm/wk, 312k PyPI/wk |

## Verdicts

**Google Sheets API.** Batch updates apply atomically and count as one request, and the drive.file scope limits an app to files the user picks. Quotas are 300 reads and 300 writes a minute per project, reads are by range with no row filter or paging, and a person must complete OAuth consent first.

**Smartsheet API + MCP.** The REST API has a public OpenAPI 3.0.3 spec with 187 operations, Markdown docs and llms.txt, and the hosted MCP server loads its 83 documented tools by toolset. API access needs a Business plan or higher, and the status page lists eight incidents marked major or critical between 15 July and 21 September 2026.

## Before you call either

### Google Sheets API

1. Ask for drive.file where the user picks the files. spreadsheets and spreadsheets.readonly are sensitive scopes and need extra verification for a public app
2. Send valueInputOption=USER_ENTERED to write formulas. With RAW the string =1+2 is stored as text
3. Put related changes in one spreadsheets.batchUpdate. It counts as one write request and none of it applies if any request is invalid
4. Pass ranges and a fields mask on spreadsheets.get and leave includeGridData off for large files
5. Back off exponentially on 429 and 503, and keep to one request a second per spreadsheet. After a timeout on values.append, read the range before retrying

### Smartsheet API + MCP

1. Send writes to one sheet one at a time. Parallel updates with the same token return error 4004
2. Batch row changes, up to 500 rows a call, and add `allowPartialSuccess=true` to get per-row failures instead of a failed batch
3. On error 4003 (HTTP 429) wait at least 60 seconds before retrying. The limit is 300 requests a minute per token, 30 for attachments and cell history
4. Through MCP, call `get_columns` before filtering or writing. Column names are case-sensitive and guesses fail validation
5. Use the regional host that matches the account (api.smartsheet.com, .eu or .au). Tokens don't work across regions

## Questions

### Which is better for AI agents, Google Sheets API or Smartsheet API + MCP?

Google Sheets API scores 76.3 (BB) on agent readiness against Smartsheet API + MCP's 67.6 (B), and leads in 4 of 7 scored categories. Smartsheet API + MCP leads on schema & documentation.

### Do Google Sheets API and Smartsheet API + MCP need an API key?

Google Sheets API uses an OAuth sign-in. Smartsheet API + MCP takes an API key or an OAuth sign-in.

### Can an agent call Google Sheets API and Smartsheet API + MCP without installing anything?

Yes. Google Sheets API has a hosted endpoint at https://sheets.googleapis.com/v4 and Smartsheet API + MCP at https://api.smartsheet.com/2.0.


## For agents

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

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