01 Advisors
01 Advisors (01A) is an early-growth venture capital and advisory firm founded in 2018 by former Twitter CEO Dick Costolo and former Twitter COO Adam Bain, with former Facebook Chief Revenue Officer David Fischer as a third general partner. Headquartered in San Francisco with a New York office, the firm positions itself as "venture coaches" that deliberately avoid taking board seats, focusing on Series B companies with product-market fit that need help building professional sales organizations and revenue operations. It manages roughly $920M across multiple funds. Added to the API Evangelist network as a venture-capital portfolio lead surfaced via foundry-group; the firm runs a corporate marketing website (Squarespace) and publishes no public API, developer portal, or machine-readable surface.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
API Evangelist profiles 01 Advisors the way a machine reads it — 1 machine-readable artifact, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — 01 Advisors scores 6.8/100 (minimal), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile 01 Advisors
Each block below is one kind of artifact we hold for 01 Advisors. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for 01 Advisors — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Access & Security 1
Authentication, authorization, and security posture
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/01-advisors · machine-readable index on apis.io