Citable docs
Pay-per-call SEO and AI-visibility data, over plain HTTP.
Seventeen endpoints. Each one answers 402 Payment Required with its price; pay the quoted USDC on Solana and the same request returns JSON. No API key, no subscription, nothing stored about you — failed calls are never charged.
Not technical? You need exactly one page
Read a price for free, pay with the official x402 SDK or the pay CLI, get JSON.
Mount every endpoint as a tool in Claude Code, Codex, Cursor or Claude Desktop. One env var to pay, one to cap spend.
Params, real responses, error codes and the MCP tool name for each endpoint.
The payment loop#
Server quotes the price
Amount, USDC mint, pay-to address and expiry in the PAYMENT-REQUIRED header. Reading it is free.
Client signs, Solana settles
An x402 client signs a USDC transfer for exactly that amount and retries with the payment header. ~400 ms. No SOL needed.
Same request, JSON back
Settlement signature in the PAYMENT-RESPONSE header. Any 4xx or 5xx instead means nothing was charged.
Endpoints#
Prices are per call, in USDC. The price in the 402 header is the price you pay; the free /api index always carries the current list.
Analysis & audit
One page, one keyword, one results page — what is actually there.
Google organic position of a domain for a keyword, plus the top-10 list
Classic on-page SEO plus AI citability, scored 0–100 with a fix for every non-passing check.
The raw Google results page
Keyword research
Find the words, then the numbers behind them.
The phrasings real people type: autocomplete expansions and questions for a seed
One seed, the whole picture: keywords and questions from autocomplete and the paid index, with volume, CPC, difficulty and intent attached.
Keyword research with the numbers attached: every result contains your seed, and arrives with search volume, CPC, difficulty and intent.
Search volume, CPC, competition, difficulty and intent per keyword
AI visibility
Who AI answer engines cite, for what, and how that moves.
Which AI answer engines cite a domain for a prompt
Which pages of a domain AI engines cite most, from an aggregated index of AI answers.
The real questions AI engines already cite a domain for
Monthly AI mentions and AI search volume for a domain, with month-over-month deltas
Who AI cites most across 2–10 competing domains
Competitive research
A rival's footprint: keywords, traffic, links.
One domain's organic footprint
The keywords a domain actually ranks for
A domain's organic footprint month by month
Link profile in one call: totals, domain rank, broken links, and the top referring domains.
Reports
Several checks answered in one call.
Citable is data your agent buys — the agent is yours. New to crypto? Paying, plainly covers everything in five facts.
Discovery for agents#
Two free URLs describe the service in formats agents read: /skill.md is the onboarding file (endpoints, prices, how to pay) and /api is the machine index with the network, scheme and engines currently configured.
$ curl -s https://citable.run/skill.md $ curl -s https://citable.run/api | jq .endpoints