// MCP TOKEN COST

The API Ninjas MCP server costs 47,456 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 API Ninjas MCP server's 244 tool definitions consume 47,456 tokens — 24% of a 200k context window, and 25× 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 #85 of 12,801 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 24%

1M WINDOW 4.7%

Corpus context: API Ninjas ranks #85 of 12,801 measured MCP servers by definition cost. The median is 1,866 tokens, p90 is 13,646, and the heaviest (Ainumbers Mcp Apps) is 442,891 — 221% 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 47,456 tokens go.

Each row is one tool definition as a tools/list entry — name, description and input schema — counted with o200k_base. Average: 194 tokens per tool.

Tool	Category	Tokens	% of server
getUniversities	Read	869	1.8%
getCars	Read	814	1.7%
getInsiderTransactions	Read	528	1.1%
getAirports	Read	524	1.1%
getWorkingDays	Read	504	1.1%
getEarningsCallSpeaker	Read	501	1.1%
getAircraft	Read	500	1.1%
getCountryData	Read	490	1.0%
getEarningsCalendar	Read	484	1.0%
getCryptoTreasury	Read	482	1.0%
getIpoCalendar	Read	481	1.0%
getHolidays	Read	476	1.0%
getShortInterestScreener	Read	468	1.0%
calculateCaloriesBurned	Read	454	1.0%
isWorkingDay	Read	448	0.9%
getEarnings	Read	430	0.9%
getSalesTaxFiling	Read	413	0.9%
getCurrentCommodityPrice	Read	403	0.8%
getInstitutionalHoldings	Read	402	0.8%
getSalesTaxNexus	Read	398	0.8%
getBitcoinTreasury	Read	393	0.8%
getCarFacets	Read	370	0.8%
getHistoricalInterestRates	Read	369	0.8%
getRandomUsers	Read	359	0.8%
Get_a_list_of_planets	Read	353	0.7%
getCurrencyVolatilityHistorical	Read	353	0.7%
getCats	Read	343	0.7%
getOilSpotPrice	Read	340	0.7%
getQuotes	Read	340	0.7%
getUpcomingEarnings	Read	338	0.7%
searchETFs	Read	336	0.7%
getStockSplit	Read	334	0.7%
getCommoditySpotPrice	Read	327	0.7%
getCurrentOilPrice	Read	326	0.7%
searchEarningsTranscripts	Read	324	0.7%
getSalesTaxHolidays	Read	320	0.7%
getRandomQuotes	Read	315	0.7%
getDogs	Read	313	0.7%
isPublicHoliday	Read	311	0.7%
screenSanctions	Write	310	0.7%
getInstitutionalOwnership	Read	300	0.6%
isBankHoliday	Read	299	0.6%
closestAirport	Read	297	0.6%
getCurrencyVolatilityForecast	Read	296	0.6%
getCurrentMetalsPrice	Read	296	0.6%
calculateIncomeTax	Read	290	0.6%
getEarningsCallParticipants	Read	289	0.6%
getCarGenerations	Read	281	0.6%
getCryptoPriceHistorical	Read	280	0.6%
getHospitals	Read	275	0.6%
getCovidData	Read	273	0.6%
getElectricVehicleData	Read	273	0.6%
getNaics	Read	270	0.6%
getHelicopterData	Read	269	0.6%
generateQRCode	Write	267	0.6%
getExecutiveCompensation	Read	266	0.6%
getTrivia	Read	266	0.6%
getCityData	Read	264	0.6%
getDayInHistory	Read	261	0.5%
getHistoricalStockPrice	Read	256	0.5%
calculateMortgage	Read	255	0.5%
getExercises	Read	254	0.5%
getNutritionBarcode	Read	252	0.5%
getPublicHolidays	Read	251	0.5%
getCurrencyVolatility	Read	248	0.5%
getBankHolidays	Read	247	0.5%
Get_a_list_of_stars	Read	239	0.5%
searchSEC	Read	237	0.5%
findSwiftCodes	Read	234	0.5%
getStockNews	Read	234	0.5%
getIncomeStatement	Read	233	0.5%
getBalanceSheet	Read	232	0.5%
getCashFlow	Read	232	0.5%
getShortInterest	Read	228	0.5%
searchNaics	Read	228	0.5%
getEarningsTranscript	Read	225	0.5%
getVATRates	Read	225	0.5%
getCelebrity	Read	222	0.5%
getEVCharger	Read	219	0.5%
getIncomeTax	Read	216	0.5%
getETFInfo	Read	209	0.4%
getCarModels	Read	206	0.4%
getHoroscope	Read	206	0.4%
getRandomImage	Read	206	0.4%
searchBanks	Read	205	0.4%
getHistoricalExchangeRate	Read	204	0.4%
generateSudoku	Write	203	0.4%
getHistoricalInflation	Read	202	0.4%
getTreasuryYieldHistorical	Read	202	0.4%
classifyNaics	Read	201	0.4%
getHistoricalGoldPrice	Read	201	0.4%
getHistoricalOilPrice	Read	199	0.4%
getHistoricalEvents	Read	197	0.4%
getShortVolume	Read	193	0.4%
getRecipes	Read	191	0.4%
validateVATNumber	Read	191	0.4%
searchCanadaRoutingNumbers	Read	187	0.4%
generateBarcode	Write	186	0.4%
searchBsb	Read	185	0.4%
searchMotorCarriers	Read	185	0.4%
getInstitutionalInvestors	Read	183	0.4%
getAirlines	Read	182	0.4%
getCurrentWeather	Read	182	0.4%
getEmojis	Read	182	0.4%
getNaicsSizeStandard	Read	181	0.4%
getAllExercises	Read	180	0.4%
getHistoricalLiborRates	Read	180	0.4%
airportSuggest	Read	177	0.4%
getCryptoPrice	Read	176	0.4%
getFacts	Read	176	0.4%
getPostalCode	Read	175	0.4%
generatePassword	Write	174	0.4%
getCarMakes	Read	173	0.4%
generateLoremIpsum	Write	173	0.4%
getWeatherForecast	Read	172	0.4%
getPinCode	Read	171	0.4%
getMotorCarrier	Read	168	0.4%
getShortInterestCalendar	Read	167	0.4%
getCanadaRoutingNumberInfo	Read	166	0.3%
getStockExchangeHours	Read	166	0.3%
solveSudoku	Write	165	0.3%
getNaicsRisk	Read	164	0.3%
getInstitutionalMovers	Read	163	0.3%
getTreasuryYield	Read	163	0.3%
convertAirportCode	Write	162	0.3%
searchSortCodes	Read	161	0.3%
getFailsToDeliver	Read	159	0.3%
getRiddles	Read	159	0.3%
getGoldSpotPrice	Read	156	0.3%
getMutualFund	Read	156	0.3%
getAirQuality	Read	154	0.3%
getBitcoinHistoricalData	Read	154	0.3%
getCurrentInterestRates	Read	154	0.3%
getWorldTime	Read	153	0.3%
getCounty	Read	152	0.3%
getInsiderDetails	Read	151	0.3%
generateUserAgent	Write	147	0.3%
getCurrentGoldPrice	Read	145	0.3%
getHistoricalCommodityPrice	Read	144	0.3%
getMortgageRate	Read	144	0.3%
getChuckNorrisJoke	Read	140	0.3%
getBabyNames	Read	139	0.3%
getCounter	Read	139	0.3%
getGeocoding	Read	139	0.3%
getIPInfo	Read	139	0.3%
airportDistance	Read	138	0.3%
getCommoditySnapshot	Read	137	0.3%
getSalesTax	Read	137	0.3%
convertCurrency	Write	137	0.3%
getPopulationData	Read	136	0.3%
getTimezone	Read	136	0.3%
searchMotorcycles	Read	136	0.3%
isHoliday	Read	135	0.3%
getCountryFlag	Read	134	0.3%
getNutritionItem	Read	131	0.3%
getStockExchange	Read	131	0.3%
listEarningsCallTranscripts	Read	131	0.3%
getPropertyTax	Read	130	0.3%
searchTickers	Read	128	0.3%
getRandomWord	Read	127	0.3%
getCurrentInflation	Read	124	0.3%
phoneLookup	Read	124	0.3%
validatePhone	Read	123	0.3%
scrapeData	Read	122	0.3%
getQuoteAuthors	Read	120	0.3%
calculateSalesTax	Read	117	0.2%
getInsidersList	Read	116	0.2%
parseUserAgent	Execute	115	0.2%
getStockPriceList	Read	115	0.2%
getCommodityContract	Read	112	0.2%
searchHistoricalFigures	Read	111	0.2%
computeTextSimilarity	Read	110	0.2%
getBalanceSheetAvailability	Read	109	0.2%
getCashFlowAvailability	Read	109	0.2%
getIncomeStatementAvailability	Read	109	0.2%
getUnemploymentData	Read	109	0.2%
getBsbInfo	Read	106	0.2%
getCommodityForwardCurve	Read	104	0.2%
getDadJoke	Read	104	0.2%
listETFs	Read	104	0.2%
getSortCodeInfo	Read	103	0.2%
getJoke	Read	102	0.2%
getDNSRecords	Read	101	0.2%
Get_ZIP_Code_details	Read	100	0.2%
getHobby	Read	98	0.2%
getLogos	Read	98	0.2%
getMotorCarrierInsurance	Read	97	0.2%
getUrlInfo	Read	97	0.2%
getMotorCarrierLinks	Read	96	0.2%
getStockExchangeHolidays	Read	95	0.2%
getGDPData	Read	93	0.2%
searchCocktails	Read	93	0.2%
getElectricVehicleModels	Read	92	0.2%
convertUnit	Write	92	0.2%
getAnalytics	Read	90	0.2%
getReverseGeocoding	Read	90	0.2%
binLookup	Read	89	0.2%
getCurrentStockPrice	Read	89	0.2%
getMotorCarrierSafety	Read	89	0.2%
getDomainInfo	Read	88	0.2%
getWhois	Read	87	0.2%
vinLookup	Read	87	0.2%
spellCheck	Read	85	0.2%
detectObjects	Read	84	0.2%
getExchangeRate	Read	84	0.2%
getTriviaOfTheDay	Read	84	0.2%
getBankInfo	Read	83	0.2%
detectLanguage	Read	82	0.2%
analyzeSentiment	Read	81	0.2%
getMXRecords	Read	81	0.2%
getWeatherIcons	Read	79	0.2%
getAirportsList	Read	77	0.2%
filterProfanity	Read	74	0.2%
getNutrition	Read	72	0.2%
validateEmail	Read	71	0.1%
encodeText	Read	70	0.1%
getMotorcycleModels	Read	70	0.1%
getThesaurus	Read	70	0.1%
getTicker	Read	70	0.1%
checkDisposableEmail	Read	69	0.1%
getElectricVehicleMakes	Read	69	0.1%
getAnimals	Read	68	0.1%
getMarketCap	Read	68	0.1%
detectFaces	Read	67	0.1%
extractTextFromImage	Read	67	0.1%
getIBAN	Read	64	0.1%
getAllStockExchanges	Read	60	0.1%
getAllCountryFlags	Read	57	0.1%
getQuoteOfTheDay	Read	57	0.1%
getAllDogs	Read	56	0.1%
getMotorcycleMakes	Read	55	0.1%
getAdvice	Read	53	0.1%
getAllCatNames	Read	53	0.1%
getCommodityContractList	Read	53	0.1%
getWebpageMetadata	Read	53	0.1%
getBitcoinData	Read	52	0.1%
getEarningsCalendarList	Read	52	0.1%
getRhyme	Read	52	0.1%
listActivities	Read	52	0.1%
getAllCountries	Read	51	0.1%
getEuriborRates	Read	50	0.1%
getCryptoSymbols	Read	48	0.1%
getDefinition	Read	47	0.1%
getBucketListItem	Read	46	0.1%

// CUT THE COST

Your agent uses a handful of these tools. It pays for all 244.

You don't need all 244 of those definitions in the window. PolicyLayer is an MCP gateway that sits in front of API Ninjas: 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 244 tools (no gateway)	47,456 tokens	—
3 granted tools	~583 tokens	−99%
5 granted tools	~972 tokens	−98%
10 granted tools	~1,945 tokens	−96%

Create a free account and register API Ninjas — 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 API NINJAS TOKEN COST →

Instant setup, no code required.

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

//FAQ

API Ninjas token-cost questions.

How many tokens does the API Ninjas MCP server use?+

Its 244 tool definitions total 47,456 tokens — 24% 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 API Ninjas 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 API Ninjas's token usage?+

Expose fewer tools. A PolicyLayer grant scopes API Ninjas 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 583 tokens, a 99% 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 21-10-2026 from the PolicyLayer scan database over all 244 catalogued API Ninjas tools. Counts refresh with every site build.