Crypto data API

Name: Perception digital asset public record
Creator: Perception

Bring digital asset mentions, companies, sentiment, and narratives into your product. Query through REST or connect your AI through MCP.

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PerceptionAPI example

Read the current Perception Index from the public API.

Perception

A request you can run

Request

curl "https://api.perception.to/index"

Saved response · selected fields

{
  "score": 49,
  "status": "Neutral",
  "article_count_24h": 1918,
  "updated_at": "2026-09-08T16:45:16.965Z",
  "update_frequency_minutes": 15
}

1 source

Perception Index · public endpoint8 Sep 2026, 16:45 UTC

Selected fields from a captured API response. The endpoint returns the latest value when you run it.

Explore the API

Captured API response. Saved research · 8 Sep 2026

Authenticated REST endpoints require paid access.

Choose REST or MCP

Use REST for requests from your application, scheduled job, or notebook. Use MCP when an AI client should select tools and assemble a sourced answer.

Free access includes 5 free weighted credits per day. Paid plans include authenticated REST access, monthly credit pools, and the Perception app.

How far back the record goes

The record starts in 2011 and holds 2.7 million records, 986,871 of them from the 12 months to 26 Sep 2026. X posts run from 2016 and LinkedIn posts from 2013. The daily Perception Index runs from February 2018 with the same formula every day, so each historical value can be recomputed from the stored articles.

REST endpoints for mentions, trends, sentiment, and the Fear & Greed index take a startDate and endDate, so a backtest or a report can request the exact window it needs. Coverage counts were measured on 27 Sep 2026. For sentiment-filtered requests, see the crypto sentiment API.

Choose the data your workflow needs

Search mentions by company, topic, source, and date. Use the returned source links and metadata to build an answer or a review queue.

Explore sentiment, trends, company profiles, and analyst data in the endpoint reference. REST endpoints and MCP tools have their own supported parameters and access rules.

Build from the endpoint reference

Create a Perception key in account settings and use it as a Bearer token for authenticated REST requests. Keep the key on your server.

The reference lists available endpoints, the data they return, authentication, and base credit costs. Use the OpenAPI specification for request parameters and response definitions.

Open the endpoint reference OpenAPI specification

Start with the right access

Free MCP includes 5 free weighted credits per day. Registered metered access adds occasional usage, and paid subscriptions include monthly shared pools, REST access, and the Perception app.

Choose the plan for your workload on the pricing page; each access path has its own allowance.

Compare plans and allowances

Bring better sources to your next question

Start for free

5 free weighted credits per day.