// MCP TOKEN COST

The Google Drive MCP server costs 31,440 tokens before the first call.

Every request your agent makes carries every tool definition this server exposes — context your code, documents and conversation can't use, mostly for tools the agent never calls. You don't need them all in the window, and you don't have to pay for them.

QUICK ANSWER The Google Drive MCP server's 131 tool definitions consume 31,440 tokens — 16% of a 200k context window, and 17× the median MCP server (1,866 tokens). A scoped grant exposing only the tools you use cuts that roughly in proportion.

MEASURED FROM SCHEMAS tiktoken o200k_base · rank #167 of 12,802 measured servers · refreshed every build Method →

// CONTEXT WINDOW SHARE

What that costs before your agent starts working.

Tool definitions are overhead: they occupy context on every request and compete with your code, documents and conversation history for the same window.

200K WINDOW 16%

1M WINDOW 3.1%

Corpus context: Google Drive ranks #167 of 12,802 measured MCP servers by definition cost. The median is 1,866 tokens, p90 is 13,667, and the heaviest (Ainumbers Mcp Apps) is 445,124 — 223% of a 200k window on its own. New to this? See MCP token cost and context window in the glossary.

Token cost is one axis. See the risk picture across your whole stack →

// PER-TOOL BREAKDOWN

Where the 31,440 tokens go.

Each row is one tool definition as a tools/list entry — name, description and input schema — counted with o200k_base. Average: 240 tokens per tool.

Tool	Category	Tokens	% of server
applyParagraphStyle	Write	1,489	4.7%
formatGoogleDocParagraph	Write	1,436	4.6%
styleDocTable	Read	1,164	3.7%
updateGoogleSheetIfUnchanged	Write	824	2.6%
getGoogleSheetCells	Read	576	1.8%
createCalendarEvent	Write	509	1.6%
formatGoogleDocText	Write	488	1.6%
insertText	Write	486	1.5%
applyTextStyle	Write	485	1.5%
findAndReplaceInDoc	Write	483	1.5%
createParagraphBullets	Write	477	1.5%
deleteRange	Destructive	467	1.5%
uploadFile	Write	408	1.3%
updateCalendarEvent	Write	382	1.2%
addPermission	Write	376	1.2%
batchUpdateGoogleSheetValues	Write	375	1.2%
editTableCell	Write	371	1.2%
describeGoogleDocRange	Read	361	1.1%
insertSheetDimension	Write	356	1.1%
deleteDimensionGroup	Destructive	322	1.0%
search	Read	309	1.0%
getGoogleSheetContent	Read	306	1.0%
createFootnote	Write	300	1.0%
setGoogleSheetBorders	Write	294	0.9%
createDocFromHTML	Write	291	0.9%
addGoogleSheetConditionalFormat	Write	289	0.9%
getGoogleDocContentPaginated	Read	288	0.9%
addComment	Write	287	0.9%
insertSmartChip	Write	284	0.9%
updateDimensionGroup	Write	283	0.9%
updateGoogleSheet	Write	281	0.9%
addDataValidation	Write	280	0.9%
replaceAllTextInSlides	Write	279	0.9%
getGoogleDocImage	Read	277	0.9%
insertTable	Write	276	0.9%
formatGoogleSlidesText	Write	272	0.9%
createGoogleSheet	Write	267	0.8%
readGoogleDocPaginated	Read	265	0.8%
addDimensionGroup	Write	265	0.8%
createGoogleSlidesShape	Write	265	0.8%
downloadFile	Read	260	0.8%
updateGoogleDoc	Write	257	0.8%
styleGoogleSlidesShape	Write	254	0.8%
showSheetDimension	Write	253	0.8%
replaceSlideImage	Write	249	0.8%
hideSheetDimension	Write	248	0.8%
setColumnWidth	Write	248	0.8%
setRowHeight	Write	248	0.8%
appendSpreadsheetRows	Write	247	0.8%
formatGoogleSheetText	Write	246	0.8%
insertLocalImage	Write	244	0.8%
getGoogleDocStyleSummary	Read	237	0.8%
formatGoogleSheetCells	Write	236	0.8%
createGoogleSlidesTextBox	Write	235	0.7%
getCalendarEvents	Read	234	0.7%
insertSlidesLocalImage	Write	227	0.7%
insertSlidesImageFromUrl	Write	223	0.7%
autoResizeColumns	Write	219	0.7%
autoResizeRows	Write	219	0.7%
shareFile	Write	208	0.7%
setElementZOrder	Write	199	0.6%
formatGoogleSheetNumbers	Write	195	0.6%
setElementText	Write	194	0.6%
readGoogleDoc	Read	192	0.6%
manage_accounts	Write	190	0.6%
listGoogleSheets	Read	189	0.6%
listGoogleDocs	Read	183	0.6%
formatGoogleSlidesParagraph	Write	182	0.6%
moveSlideElement	Write	182	0.6%
insertImageFromUrl	Write	172	0.5%
createShortcut	Write	169	0.5%
setGoogleSlidesBackground	Write	169	0.5%
uploadPdfWithSplit	Write	168	0.5%
setSlideVisibility	Write	157	0.5%
lockFile	Write	155	0.5%
listDimensionGroups	Read	153	0.5%
restoreRevision	Write	153	0.5%
getGoogleDocContent	Read	150	0.5%
listComments	Read	150	0.5%
copyFile	Write	150	0.5%
replyToComment	Write	150	0.5%
exportSlideThumbnail	Read	149	0.5%
readTextFile	Read	147	0.5%
bulkConvertFolderPdfs	Write	146	0.5%
mergeGoogleSheetCells	Write	145	0.5%
createGoogleSlides	Write	142	0.5%
reorderSlides	Write	136	0.4%
deleteCalendarEvent	Destructive	134	0.4%
updatePermission	Write	134	0.4%
convertPdfToGoogleDoc	Write	129	0.4%
protectRange	Write	129	0.4%
updateGoogleSlides	Write	128	0.4%
removePermission	Destructive	127	0.4%
updateGoogleSlidesSpeakerNotes	Write	127	0.4%
getRevisions	Read	126	0.4%
updateTextFile	Write	124	0.4%
getSlideElementInfo	Read	121	0.4%
listFolder	Read	121	0.4%
addSpreadsheetSheet	Write	121	0.4%
createTextFile	Write	120	0.4%
renameSheet	Write	120	0.4%
renameDocumentTab	Write	117	0.4%
addNamedRange	Write	116	0.4%
deleteSlideElement	Destructive	115	0.4%
listDocumentTabs	Read	114	0.4%
getGoogleSlidesSpeakerNotes	Read	112	0.4%
createGoogleDoc	Write	112	0.4%
addSheet	Write	111	0.4%
getCalendarEvent	Read	108	0.3%
getGoogleSlidesContent	Read	108	0.3%
getComment	Read	107	0.3%
listSharedDrives	Read	106	0.3%
deleteComment	Destructive	105	0.3%
deleteGoogleSlide	Destructive	105	0.3%
deleteSheet	Destructive	104	0.3%
duplicateSlide	Write	104	0.3%
renameItem	Write	104	0.3%
getSpreadsheetInfo	Read	103	0.3%
readSmartChips	Read	103	0.3%
moveItem	Write	103	0.3%
addDocumentTab	Write	102	0.3%
deleteItem	Destructive	100	0.3%
createFolder	Write	100	0.3%
unlockFile	Write	98	0.3%
getDocumentInfo	Read	97	0.3%
listCalendars	Read	90	0.3%
listSheets	Read	89	0.3%
listPermissions	Read	88	0.3%
authTestFileAccess	Read	46	0.1%
authListScopes	Read	31	0.1%
authGetStatus	Read	29	0.1%

// CUT THE COST

Your agent uses a handful of these tools. It pays for all 131.

You don't need all 131 of those definitions in the window. PolicyLayer is an MCP gateway that sits in front of Google Drive: only the tools you grant are exposed to the agent, the rest never load. A smaller window means a sharper agent — less noise when it picks a tool — and every request costs less:

Grant scope	Definition cost	Reduction
All 131 tools (no gateway)	31,440 tokens	—
3 granted tools	~720 tokens	−98%
5 granted tools	~1,200 tokens	−96%
10 granted tools	~2,400 tokens	−92%

The risk dividend: 9 of these 131 tools are critical-risk (destructive or financial) and cost 1,579 tokens (5% of the definition load). Block them — the recommended starter policy — and you reclaim that context before tuning anything else.

Create a free account and register Google Drive — nothing to install.
Grant only the tools you use — ungranted definitions never enter the context window.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CUT GOOGLE DRIVE TOKEN COST →

Instant setup, no code required.

Model your own stack in the token-cost calculator, or see the Google Drive policy for what a sensible grant looks like.

//FAQ

Google Drive token-cost questions.

How many tokens does the Google Drive MCP server use?+

Its 131 tool definitions total 31,440 tokens — 16% of a 200k context window — measured with tiktoken o200k_base over the serialised tools/list payload. Exact counts vary slightly by client and model.

Why does Google Drive consume tokens before I send a message?+

MCP clients load every connected server's tool definitions — name, description, and input schema — into the model's context so it knows what it can call. That payload is charged against your context window on every request, whether or not a tool is used.

How do I reduce Google Drive's token usage?+

Expose fewer tools. A PolicyLayer grant scopes Google Drive to only the tools you allow — ungranted definitions are filtered out of the tool list, so they never enter the context window. A grant of 3 typical tools costs roughly 720 tokens, a 98% reduction.

Does deferred tool loading fix this?+

Partially, in some clients. Claude Code defers MCP tool schemas behind a tool-search step by default, and VS Code has experimental grouping — but you still pay tokens per search and reload, and Cursor, Windsurf and Gemini CLI load definitions upfront. Reducing the exposed tool set cuts the cost in every client.

// METHOD & REVIEW

How these numbers were measured.

01

Serialisation

Each tool is serialised as a tools/list entry — name, description, input schema — from the schemas in the PolicyLayer scan database. Clients differ slightly in framing, so treat counts as close estimates.

02

Tokeniser

tiktoken o200k_base (GPT-4o/o-series). Anthropic's current tokeniser isn't published, so Claude's exact counts will differ; for English text and JSON schemas the totals are close enough to treat these as estimates.

03

Deferred loading

Some clients now defer schema loading (Claude Code's tool search; VS Code experimental grouping). You still pay per search and reload — and Cursor, Windsurf and Gemini CLI load everything upfront.

Computed 23-10-2026 from the PolicyLayer scan database over all 131 catalogued Google Drive tools. Counts refresh with every site build.