{"uid":"cap_gvcskDo6jX3elQJRc8648","slug":"true402-keyword-volume-api-fb298679","name":"true402 Keyword Volume API","description":"The machine-native marketplace. Wallet = identity. Pay per call with HTTP 402.","url":"https://true402.dev/api/v1/keyword-volume","method":"POST","headers":{},"bodySchema":{"type":"object","required":["keywords"],"properties":{"keywords":{"type":"array","description":"Up to 200 keywords, priced per call"},"language":{"type":"string","description":"Language code, default 'en'"},"location":{"type":"integer","description":"Location code, default 2840 (US)"}}},"responseSchema":{"type":"object","properties":{"keywords":{"type":"array","items":{"type":"object","properties":{"cpc":{"type":"number"},"trend":{"type":"array","items":{"type":"object","properties":{"year":{"type":"number"},"month":{"type":"number"},"volume":{"type":"number"}}}},"bidLow":{"type":"number"},"bidHigh":{"type":"number"},"keyword":{"type":"string"},"competition":{"type":"string"},"searchVolume":{"type":"number","description":"undefined = upstream had no data for this term, never 0"},"competitionIndex":{"type":"number"}}},"description":"One entry per requested keyword, in the order sent (after de-duplication)"},"language":{"type":"string"},"location":{"type":"number"},"returned":{"type":"number","description":"How many of the requested keywords the upstream had data for"},"requested":{"type":"number"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.15","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.15/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_11w8tOwKeY5J5VvvZq8Er","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.15","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns search volume, CPC, competition data, and monthly trends for up to 200 keywords, with optional language and location targeting.","exampleAgentPrompt":"What's the monthly search volume, CPC, and competition level for the keywords 'project management software', 'task tracking app', and 'team collaboration tool' in the US?","exampleUseCases":[{"title":"SEO content prioritization","prompt":"I'm planning blog content for my SaaS startup — can you pull search volume, competition, and CPC data for these 10 keywords: 'crm software', 'customer relationship management', 'sales pipeline tool', 'lead tracking software', 'small business crm', 'free crm', 'crm for startups', 'crm system', 'best crm 2024', 'crm app'? I want to find the easiest ones to rank for."},{"title":"Google Ads budget planning","prompt":"I need to estimate my Google Ads costs before launching a campaign. Can you get the bid low, bid high, and search volume for 'online yoga classes', 'yoga for beginners', and 'yoga streaming service' in the US in English?"},{"title":"Multilingual market keyword research","prompt":"We're expanding into Germany — can you check search volume, CPC, and competition for 'projektmanagement software', 'aufgabenverwaltung', and 'teamarbeit tool' using German language and Germany location?"}],"resultDescription":"Returns an array of keyword objects, each containing: searchVolume (monthly average; undefined if upstream has no data), CPC (cost-per-click estimate), bidLow and bidHigh (bid range), competition label, competitionIndex (numeric), and a monthly trend array with year/month/volume entries. Also returns the requested count, returned count, and the language/location used.","failureModes":["Keywords array missing or empty — 400 validation error","More than 200 keywords submitted — may be rejected or truncated","Unknown location code — upstream may return no data","Payment not completed via x402 — 402 Payment Required response","Upstream keyword data provider has no data for niche or very new keywords — returned count less than requested, searchVolume undefined for affected terms","Invalid language code — may default to 'en' or return error"],"whenToPreferThis":"Choose this endpoint when you need programmatic, pay-per-call keyword research data without a subscription — ideal for AI agents that need SEO or PPC metrics on demand. Supports up to 200 keywords per call with location and language targeting. Well-suited for pipelines that don't want to maintain a keyword tool subscription and prefer micro-payment access via x402/USDC.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":5,"lastUsedAt":"2026-09-09T14:31:27.881Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:56:00.275Z","isFirstParty":false}