PrimaryBid

PrimaryBid was a UK-based fintech that gave retail investors access to public capital markets — IPOs, follow-on equity raises, and public offerings that were historically restricted to institutional investors. It partnered with exchanges, banks, and issuers to broadcast live capital-raising events to individual investors, powering retail participation in listings such as Deliveroo, PensionBee, and Soho House. PrimaryBid's technology was acquired by SoFi Technologies, Inc. in May 2026; the standalone consumer platform has been wound down and its public website now redirects former shareholders to third-party share registrars. This profile is retained in the API Evangelist network as a historical company record. No public developer portal, API documentation, or machine-readable API surface was found during enrichment.

PrimaryBid is profiled on the APIs.io network. Tagged areas include Company, Fintech, Capital Markets, IPO, and Retail Investing.

🌐 Visit website 📡 Source on GitHub

5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Fintech Capital Markets IPORetail InvestingInvesting United Kingdom

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 5.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

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

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.

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 github.com/api-evangelist/primarybid: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Primarybid Domain Security

TLSv1.2 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: primarybid
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/primarybid.png
name: PrimaryBid
description: PrimaryBid was a UK-based fintech that gave retail investors access to public capital markets — IPOs, follow-on
  equity raises, and public offerings that were historically restricted to institutional investors. It partnered with exchanges,
  banks, and issuers to broadcast live capital-raising events to individual investors, powering retail participation in listings
  such as Deliveroo, PensionBee, and Soho House. PrimaryBid's technology was acquired by SoFi Technologies, Inc. in May 2026;
  the standalone consumer platform has been wound down and its public website now redirects former shareholders to third-party
  share registrars. This profile is retained in the API Evangelist network as a historical company record. No public developer
  portal, API documentation, or machine-readable API surface was found during enrichment.
url: https://raw.githubusercontent.com/api-evangelist/primarybid/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- softbank-vision-fund
x-status: acquired
x-acquired-by: sofi
x-acquired-date: '2026-05-08'
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Fintech
- Capital Markets
- IPO
- Retail Investing
- Investing
- United Kingdom
common:
- type: ParentCompany
  url: https://apis.io/providers/sofi-technologies/
  name: SoFi Technologies
  x-relationship: acquired
  x-evidence: PrimaryBid's technology was acquired by SoFi Technologies, Inc.
- type: DomainSecurity
  url: security/primarybid-domain-security.yml
- type: Website
  url: https://primarybid.com
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

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