Valence

Valence is a Y Combinator‑backed fintech startup offering a trading platform that enables users to execute and manage trades across multiple markets. The company focuses on providing low‑latency order routing, real‑time market data, and customizable algorithmic trading tools. Valence aims to democratize access to professional‑grade trading infrastructure for both retail and institutional investors, emphasizing security, compliance, and transparent pricing.

Valence is profiled on the APIs.io network. Tagged areas include fintech, trading, algorithmic, y-combinator, and startup.

📡 Profile data on GitHub

3.6/100 minimal Agent 3/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

fintechtradingalgorithmicy-combinatorstartupapi

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 3.6/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 3.8 / 9

Regulatory Posture 2.2 / 15

Agent readiness — 3/100 · 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 7 / 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

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), 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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<a href="https://apis.io/providers/valence-trade/"><img src="https://apis.io/badge/valence-trade/card.svg" alt="Valence on APIs.io — Kin Score by API Evangelist"></a>

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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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

12 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 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 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/valence-trade/apis.yml: open an issue on github.com/api-evangelist/valence-trade 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 →

Pricing Plans 1

Published pricing tiers and plan structures.

Valence Trade Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Valence Trade Rate Limits

0 limits

RATE LIMITS

Security Posture 1

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

Valence Trade Authentication

0 schemes

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Valence Trade Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: valence-trade
name: Valence
description: Valence is a Y Combinator‑backed fintech startup offering a trading platform that enables users to execute and
  manage trades across multiple markets. The company focuses on providing low‑latency order routing, real‑time market data,
  and customizable algorithmic trading tools. Valence aims to democratize access to professional‑grade trading infrastructure
  for both retail and institutional investors, emphasizing security, compliance, and transparent pricing.
url: https://artifacts.apis.io/valence-trade/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- fintech
- trading
- algorithmic
- y-combinator
- startup
- api
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/valence-trade-hosts.yml
apis: []
x-backed-by:
- y-combinator
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No OpenAPI or other machine‑readable contract was found on the provider's API host.
  evidence:
  - url: https://api.valence.trade/openapi.json
    status: 0
x-enrichment:
  date: '2026-10-29'
  status: minimal
  artifacts_added: 4
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Valence API — frequently asked questions

How do I authenticate with the Valence API?

Valence documents its authentication (0 schemes). The details are profiled on APIs.io as Valence Trade Authentication.

Is the Valence API ready for AI agents?

Valence has a Kin Score of 3.6 out of 100 (minimal) and an Agent Readiness score of 2.5 (human-only), scored by API Evangelist on 2026-10-31.

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