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CrystalKnows

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Crystal is a personality platform for self-discovery, sales preparation, hiring, and teams. Its public materials describe profiles built from multiple assessments, communication guidance, CRM integrations, a Data API, and a premium MCP capability for AI workflows.

Vendor's own claim
other/unknown

Core capabilities

Vendor's own claim
  • Personality profiles and communication guidance
  • Sales prospect profiles, meeting preparation, and follow-up guidance
  • Individual, pair, group, conflict, onboarding, and meeting-prep assessments
  • HubSpot and Salesforce personality-data integrations
  • Profile, Analysis, and Assessment Data API products
  • MCP integration for personality intelligence in compatible AI tools

API & agent surface

From official docs
Authentication
The integrations page describes OAuth2 secure access for the MCP server.
Notable endpoints
  • Profile API: supply a LinkedIn URL or business email to receive personality data
  • Analysis API: supply structured text, such as a résumé, to receive personality data
  • Assessment API: put a DISC assessment in an application and receive results
MCP tools exposed
Profile search and fetchMy profile and upcoming meetingsProfile tags
Machine-readable spec
No OpenAPI link

Pricing

From official docs
PlanPriceIncludedNotable
Crystal Profile$0 foreverSix personality assessments, full profile, 10 contacts, one starter guide, and 10 lifetime Chrome previewsFree personality profile, Peer validation, No card required
Crystal Premium$49/monthAuto-updating Personality Handbook, Full guide library, Relationship profiles for contacts
Sales Premium$59/month or $590 billed annually20 prospect profiles/monthPersonality-aware buyer profiles, Meeting-prep briefs and follow-up guidance, LinkedIn connector
Assessments Basic$99/month or $990 billed annually5 participants/month and 5 reports/monthDISC or all six frameworks, Individual, pair, and group reports
Assessments Pro$249/month or $2,490 billed annually20 participants/month and 20 reports/monthDISC or all six frameworks, Assessment reports
Assessments Max$499/month or $4,990 billed annually50 participants/month and 50 reports/monthDISC or all six frameworks, Assessment reports

Checked 2026-08-06 against their pricing page. Vendors change pricing without notice.

What is CrystalKnows

Vendor's own claim

Crystal is a personality-insights product that applies assessment-based profiles to conversations and work situations. It offers a free profile product, paid sales and assessment products, an API for personality data, CRM integrations, and a separately positioned Personality AI capability for agentic workflows.

Ideal customer profile

From official docs

Sales, recruiting, people, and leadership teams that explicitly want personality-informed meeting preparation, communication guidance, assessments, or personality data inside a CRM or application.

Who should look elsewhere

Our read

Teams that only need basic CRM enrichment or deterministic buyer-intent data should look elsewhere: Crystal's differentiator is personality inference and communication guidance, and its Data API is quote-based rather than a transparent self-serve data product. Sales users also get only 20 prospect profiles/month on the public $59 Premium plan, so a high-volume outbound motion needs a custom Team arrangement rather than assuming the entry plan will scale.

CrystalKnows FAQ

Is Crystal free to start?

Yes. The Crystal Profile is listed as $0 forever, with six assessments, a full personality profile, peer validation, ten contacts, one starter guide, and ten lifetime Chrome previews. No card is required to start.

From official docs
What does the Sales plan include?

Sales Premium is listed at $59/month or $590 annually and includes 20 prospect profiles per month, personality-aware buyer profiles, meeting-prep briefs, follow-up guidance, and a LinkedIn connector. Larger sales teams are quoted separately.

From official docs
Can Crystal enrich CRM contact records?

The integration page names HubSpot and Salesforce. It says the integrations place DISC profiles, communication tips, behavioural traits, and workflow triggers on contact records.

From official docs
Does Crystal have an API?

Yes, its pricing page names a Profile API, Analysis API, and Assessment API. Data API pricing is quote-based by volume and use case; we did not retrieve endpoint, authentication, rate-limit, or response-schema documentation.

Our read
Does Crystal have an MCP server?

The integrations page says Crystal offers an MCP server for Claude, Cursor, Windsurf, and other MCP-compatible clients, with OAuth2 secure access. The pricing page says Personality AI, including the MCP server and Adaptive API, is a premium capability for teams.

From official docs
How do Assessment plans differ?

The public pricing page says Assessment tiers primarily differ by capacity: Basic has 5 participants/reports per month, Pro 20, and Max 50; all list DISC or all six frameworks.

From official docs
Are personality outputs validated in this directory?

No. We retrieved Crystal's product and pricing documentation, not an independent validation study or a runtime test of profile accuracy. Treat the output as a vendor-provided decision aid, not a measured truth claim from this Lab.

Our read

Verify before you buy

  • Data API and MCP endpoint details, rate limits, pricing, and independent output-quality validation
  • A machine-readable OpenAPI specification was not included in the reviewed source set.

Other products that solve a similar job or fit the same part of the GTM stack.

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