Blue J

Blue J is an AI-powered tax research platform that delivers defensible, source-backed answers to complex tax questions in seconds, drawing on primary law plus Tax Notes and IBFD content. Built for tax professionals, the platform supports advisory, compliance, tax writing, and training workflows, and is trusted by 4,000+ firms including Crowe, RSM, and Larson. Blue J is a SaaS product accessed through its web application at app.askbluej.com; it does not currently publish a public developer API, SDK, or MCP server. This profile was surfaced as a portfolio company of Sapphire Ventures and enriched by the API Evangelist pipeline from Blue J's own public website, security, pricing, and trust-center pages.

Blue J is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Tax, Legal, and Research.

Blue J’s developer surface includes pricing, support, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.7/100 emerging ▬ flat Agent 0/100 human only Front door AI 4/6 moderate Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

0 APIs

Company Artificial Intelligence Tax Legal Research Compliance Software-as-a-Service Professional Services

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 23.7/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 12.8 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 7.1 — up to +18.6 composite points
Contract Governance scores 0.0 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/blue-j/apis.yml: open an issue on github.com/api-evangelist/blue-j to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Blue J API pricing

Prices published by Blue J, read 2026-10-07 from www.bluej.com/pricing.

Plan	Price
Individual Plan	$1,498/year per user Includes: Full US federal and SALT tax coverage; Unlimited questions, drafting, and file uploads; Unlimited in
Team Plan	Contact for pricing Includes: Everything in Individual, plus dedicated customer support, guided onboarding and training, firm-wide

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Blue J Plans Pricing

2 plans

PLANS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Blue J Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Blue J Vulnerability Disclosure

no policy recorded

SECURITY

Blue J Trust Center

SOC 2

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Access & Security 5

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Security

Security

Compliance

Compliance

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: blue-j
name: Blue J
description: Blue J is an AI-powered tax research platform that delivers defensible, source-backed answers to complex tax
  questions in seconds, drawing on primary law plus Tax Notes and IBFD content. Built for tax professionals, the platform
  supports advisory, compliance, tax writing, and training workflows, and is trusted by 4,000+ firms including Crowe, RSM,
  and Larson. Blue J is a SaaS product accessed through its web application at app.askbluej.com; it does not currently publish
  a public developer API, SDK, or MCP server. This profile was surfaced as a portfolio company of Sapphire Ventures and enriched
  by the API Evangelist pipeline from Blue J's own public website, security, pricing, and trust-center pages.
url: https://raw.githubusercontent.com/api-evangelist/blue-j/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- sapphire-ventures
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
image: https://www.bluej.com/favicon.ico
tags:
- Company
- Artificial Intelligence
- Tax
- Legal
- Research
- Compliance
- Software-as-a-Service
- Professional Services
tags_raw:
- Company
- Ai
- Tax
- Legal
- Research
- Compliance
- SaaS
- Professional Services
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/blue-j-plans-pricing.yml
- type: TrustCenter
  url: security/blue-j-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/blue-j-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/blue-j-domain-security.yml
- type: Website
  url: https://www.bluej.com/
- type: Pricing
  url: https://www.bluej.com/pricing
- type: Login
  url: https://app.askbluej.com/
- type: Security
  url: https://www.bluej.com/security
- type: Compliance
  url: https://app.drata.com/trust/9cbd134e-0c38-11ee-865f-029d78a187d9
- type: TermsOfService
  url: https://www.bluej.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.bluej.com/privacy-notice
- type: Support
  url: https://www.bluej.com/resources
- type: Blog
  url: https://www.bluej.com/resources
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Blue J API — frequently asked questions

How much does the Blue J API cost?

Blue J publishes its prices; its Individual Plan plan is $1,498/year per user as of 2026-10-07. APIs.io lists 2 pricing plans for Blue J, with each plan's price, limits and inclusions under Pricing on this page.

Is the Blue J API ready for AI agents?

Blue J has a Kin Score of 23.7 out of 100 (emerging) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-11-06.

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