# sociallinks.dev > sociallinks.dev finds every social account a creator runs from one profile URL (Instagram, TikTok, YouTube or X), each with a verdict, a net confidence score (0-1) and the evidence behind the match. Its complete agent surface is available through a REST API and a hosted MCP server, both on one API key. ## Agent endpoints - [Developer documentation](https://sociallinks.dev/api): every endpoint with cURL, Node and Python examples - [Authentication](https://sociallinks.dev/api#authentication): API keys and headers - [REST API](https://sociallinks.dev/api): JSON API at https://sociallinks.dev/v1 - [MCP server](https://sociallinks.dev/api#mcp): remote Streamable HTTP MCP at https://sociallinks.dev/mcp, with set-up for Claude Code, Cursor, VS Code, Windsurf and Gemini CLI - [OpenAPI 3.1](https://sociallinks.dev/openapi.json): machine-readable REST schema - [Full LLM documentation](https://sociallinks.dev/llms-full.txt): every endpoint, parameter, response, error and limit as Markdown - [API keys](https://sociallinks.dev/dashboard/api#api-keys): create and revoke keys (sign in first) - [Pricing](https://sociallinks.dev/pricing): credit packs - [Creator charts](https://sociallinks.dev/creators): public lists of top creators by country and category, each linked to their accounts ## Capability groups - lookups: lookup_creator (MCP), POST /v1/resolve, GET /v1/resolve - batches: start_batch, get_batch (MCP), POST /v1/batches, GET /v1/batches, GET /v1/batches/{id}, GET /v1/batches/{id}/export, POST /v1/batches/{id}/cancel - account: check_balance (MCP), GET /v1/balance ## Important constraints - Authenticate with a Bearer API key (`Authorization: Bearer sl_…`, or `x-api-key: sl_…`) created in the dashboard. The same key works for REST and MCP. - Send a profile page, not a post, reel, short or video; those and bare @handles are refused with 400. - 1 credit per creator found. A lookup that finds no matching profile costs nothing, and repeats of a creator your account paid for in the last 30 days are free. Every response carries `X-Credits-Remaining`. - Credit packs, bought as you need them: Starter $17 for 200 credits, Pro $49 for 750 credits, Agency $99 for 1,750 credits. No subscription; credits never expire. At 0 credits lookups are refused with 402 and nothing is charged. - A fresh lookup takes 10-40 s; creators we already have answer instantly. Honor Retry-After on 429, or send long lists to /v1/batches (up to 500 per batch). - Only matches at 50% net confidence or more are returned; the starting profile always is. - Errors are `{ "error": { "message", "code" } }`. ## Free tools and pages - [Find a creator's accounts](https://sociallinks.dev/): paste one profile link, see every account with its evidence - [Social media handle lookup](https://sociallinks.dev/tools/social-media-handle-lookup): free lookup: paste one profile and find the same creator on 15 platforms - [Bulk lookups](https://sociallinks.dev/bulk): paste up to 500 profile links and get every creator's accounts as a spreadsheet - [Use cases](https://sociallinks.dev/use-cases): influencer discovery, creator vetting, database enrichment, AI agents and product integrations ## Guides - [How to find all of a creator's social media accounts](https://sociallinks.dev/blog/how-to-find-all-social-media-accounts-of-a-creator): Manual methods that work for finding a creator's other social accounts, plus a checklist for confirming each match is really the same person. - [How to verify an influencer is who they say they are (and spot impersonators)](https://sociallinks.dev/blog/how-to-verify-an-influencer-account): Check an influencer is real before you pay: what badges mean now, the two-way link test, lookalike handles, scam red flags and a pre-contract checklist. - [How to build an influencer database that stays clean (spreadsheet or CRM)](https://sociallinks.dev/blog/how-to-build-an-influencer-database): Design an influencer database that stays clean: one row per creator, a separate accounts table, normalized URLs, dedup rules, evidence and refresh dates. - [How to find micro-influencers in your niche (without a big budget)](https://sociallinks.dev/blog/how-to-find-micro-influencers): Find micro-influencers in your niche for free: platform search, hashtags, brand tags, communities and marketplaces, plus a weekly routine and vetting. - [How to calculate an influencer's engagement rate (with formulas)](https://sociallinks.dev/blog/how-to-calculate-influencer-engagement-rate): Engagement rate by followers, reach and views, with worked examples, spreadsheet formulas and an honest way to judge what a good rate is. - [How to spot fake followers and engagement on an influencer's account](https://sociallinks.dev/blog/how-to-spot-fake-followers): A fair, step-by-step audit for fake followers and engagement: the signals to check, innocent explanations for each, and what to ask the creator. - [UGC creator vs influencer: what each does, costs and owns, and which to hire](https://sociallinks.dev/blog/ugc-creator-vs-influencer): UGC creators make content for your channels; influencers post to their own audience. Compare pay, usage rights, briefs, vetting and when to hire each. - [Instagram creator vs business account: features, API access and which to use](https://sociallinks.dev/blog/instagram-creator-vs-business-account): Personal, creator or business: what each Instagram account type unlocks, how API access works since Basic Display ended, and what brands can see. - [Username vs user ID: why social handles change and IDs don't](https://sociallinks.dev/blog/username-vs-user-id): Handles change, IDs don't. How usernames and user IDs work on Instagram, TikTok, YouTube, X, Facebook and LinkedIn, and how to key a creator database. - [Whitelisting vs usage rights: what brands actually pay creators for](https://sociallinks.dev/blog/whitelisting-vs-usage-rights): Usage rights, whitelisting and allowlisting explained: Partnership Ads, Spark Ads, exclusivity, duration, pricing structure and what to put in the contract. - [Gifted vs paid vs affiliate influencer deals: which to offer](https://sociallinks.dev/blog/gifted-vs-paid-vs-affiliate-influencer-deals): How gifted, paid and affiliate influencer deals work, what each side gets, the risks, how to track them, FTC disclosure rules and how to word each offer. - [Influencer agency vs influencer platform vs in-house: which is right for you](https://sociallinks.dev/blog/influencer-agency-vs-influencer-platform): Agency, software platform or in-house team for influencer marketing: what each does, how each is priced, control, data, contracts and lock-in. - [How to parse and normalize social media profile URLs (Instagram, TikTok, YouTube, X)](https://sociallinks.dev/blog/how-to-parse-social-media-profile-urls): Parse Instagram, TikTok, YouTube and X profile URLs into one canonical form, with tested JavaScript and Python code and an edge-case table. - [How to get a YouTube channel ID from a handle (and the other way round)](https://sociallinks.dev/blog/how-to-get-a-youtube-channel-id-from-a-handle): Resolve YouTube handles to channel IDs and back with the Data API v3 channels.list method, with Node and Python code, batching, quota and caching. - [The best social media profile lookup APIs in 2026 (compared)](https://sociallinks.dev/blog/best-social-media-lookup-apis): Ten APIs that look up social media profiles, compared on what matters: can they find a creator's other accounts from one profile, what they cost to start, whether you need a subscription, and whether they work with AI agents over MCP. Every guide is also published in 16 more languages at //blog/ (es, fr, de, pt, ja, zh, sv, ko, it, ar, ru, he, hi, ur, bn, gu).