Phos Labs

Phos Labs is an independent studio that sells behavioral-science "commerce intelligence" to AI agents: diagnose where a funnel loses customers, redesign a checkout, rewrite offer copy, optimize price framing and detect cognitive biases. The surface is a Bearer-key REST API at phoslabs.io/api/v1 (OpenAPI 3.0.3, 7 operations, an anonymous tool-and-price listing) and a hosted MCP server at mcp.phoslabs.io behind OAuth 2.1 with RFC 8414 / RFC 9728 discovery and dynamic client registration, listed twice in the official MCP registry and described by an A2A-shaped agent card with nine skills. Billing is prepaid credits (1 credit = EUR 0.01) debited per call, with x402 USDC micropayments stated but not verifiable. The same domain also hosts Mind of Granite, a consumer decision-guidance product.

Phos Labs publishes 8 API contracts indexed on the APIs.io network, including Audit API, Copy API, Detect Biases API, and 5 more. Tagged areas include Company, Behavioral Science, Conversion Optimization, E-Commerce, and Pricing.

Phos Labs’ developer surface includes documentation, API reference, getting-started guide, pricing, support, authentication, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

48.0/100 developing ▬ flat Agent 43/100 agent ready Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

4 published contracts 1 MCP Servers

Company Behavioral Science Conversion Optimization E-Commerce PricingCopywritingAI Agents MCP A2A Decision Intelligence Agentic Commerce

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Pricing Management

BC-440

Pricing

POST /api/v1/pricing

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 48.0/100 · developing

Contract Quality 9.4 / 19

Developer Ergonomics 7.1 / 15

Access Clarity 9.5 / 15

Operational Transparency 0.5 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 6.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 43/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/phoslabs-io: 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 →

APIs 8

Individual APIs this provider publishes, each with its own machine-readable definition.

Phos Labs MCP Server

Hosted, remote Model Context Protocol server. POST https://mcp.phoslabs.io/mcp is Streamable HTTP behind OAuth 2.1: the 401 challenge names RFC 9728 protected-resource metadata,...

Phos Labs Audit API

The Audit API from Phos Labs — 1 operation(s) for audit.

Phos Labs Copy API

The Copy API from Phos Labs — 1 operation(s) for copy.

Phos Labs Detect Biases API

The Detect Biases API from Phos Labs — 1 operation(s) for detect biases.

Phos Labs Diagnose API

The Diagnose API from Phos Labs — 1 operation(s) for diagnose.

Phos Labs Fix Checkout API

The Fix Checkout API from Phos Labs — 1 operation(s) for fix checkout.

Phos Labs Pricing API

The Pricing API from Phos Labs — 1 operation(s) for pricing.

Phos Labs Tools API

The Tools API from Phos Labs — 1 operation(s) for tools.

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Phos Labs Commerce Intelligence

Phos Labs ships a hosted, remote MCP server on mcp.phoslabs.io and lists it twice in the official MCP registry: io.phoslabs/commerce-intelligence (4.0.0, streamable-http, remote...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Phoslabs Io Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Phoslabs Io Rate Limits

0 limits

RATE LIMITS

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Phoslabs Io Openapi Overlay

11 actions · documentation · phoslabs-io-openapi.yml

DERIVED

Security Posture 2

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

Phoslabs Io Authentication

http/oauth2/apiKey · 3 schemes

SECURITY

Phoslabs Io Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Phoslabs Io Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Phoslabs Io Agentic Access

7 operations · 6 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 7

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

WellKnown

MCPServer

AgentSkill

AgenticAccess

Scroll for all 7

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

ToolCrosswalk

ToolCrosswalk

Packages

Packages

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 1

The organization behind the API

Website

Website

Other 6

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

AgentCard

AgentCard

Overlay

Overlay

DataSubjectRequest

DataSubjectRequest

Subprocessors

Subprocessors

AITransparency

AITransparency

Source (apis.yml)

aid: phoslabs-io
name: Phos Labs
description: 'Phos Labs is an independent studio that sells behavioral-science "commerce intelligence" to AI agents: diagnose
  where a funnel loses customers, redesign a checkout, rewrite offer copy, optimize price framing and detect cognitive biases.
  The surface is a Bearer-key REST API at phoslabs.io/api/v1 (OpenAPI 3.0.3, 7 operations, an anonymous tool-and-price listing)
  and a hosted MCP server at mcp.phoslabs.io behind OAuth 2.1 with RFC 8414 / RFC 9728 discovery and dynamic client registration,
  listed twice in the official MCP registry and described by an A2A-shaped agent card with nine skills. Billing is prepaid
  credits (1 credit = EUR 0.01) debited per call, with x402 USDC micropayments stated but not verifiable. The same domain
  also hosts Mind of Granite, a consumer decision-guidance product.'
url: https://raw.githubusercontent.com/api-evangelist/phoslabs-io/refs/heads/main/apis.yml
image: https://phoslabs.io/favicon.ico
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment-pipeline
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Company
- Behavioral Science
- Conversion Optimization
- E-Commerce
- Pricing
- Copywriting
- AI Agents
- MCP
- A2A
- Decision Intelligence
- Agentic Commerce
tags_raw:
- Company
- Behavioral Science
- Conversion Optimization
- E-commerce
- Pricing
- Copywriting
- AI Agents
- MCP
- A2A
- Decision Intelligence
- Agentic Commerce
apis:
- aid: phoslabs-io:phos-labs-mcp-server
  name: Phos Labs MCP Server
  description: 'Hosted, remote Model Context Protocol server. POST https://mcp.phoslabs.io/mcp is Streamable HTTP behind OAuth
    2.1: the 401 challenge names RFC 9728 protected-resource metadata, whose authorization server (https://mcp.phoslabs.io/)
    publishes RFC 8414 metadata with authorization_code + refresh_token, PKCE S256, dynamic client registration and one scope,
    claudeai. The root path answers an anonymous initialize (protocolVersion 2025-03-26, serverInfo "Phos Labs Commerce Intelligence")
    and refuses every other method; /sse and /messages accept a REST API key as the Bearer token. Registered in the official
    MCP registry as io.phoslabs/commerce-intelligence (4.0.0) and io.phoslabs/behavioral-science (1.0.0). tools/list is gated,
    so the tool inventory is recorded from the agent card and REST listing without input schemas. The A2A agent card served
    on this host at /.well-known/agent-card.json (and agent.json) describes this server and grades flavored (no protocolVersion).'
  humanURL: https://github.com/phoslabs/behavioral-science-api#mcp-integration
  baseURL: https://mcp.phoslabs.io/mcp
  tags:
  - MCP
  - AI Agents
  - A2A
  properties:
  - type: MCPServer
    url: mcp/phoslabs-io-mcp.yml
  - type: ToolCrosswalk
    url: mcp/phoslabs-io-tool-crosswalk.yml
  - type: AgentCard
    url: a2a/phoslabs-io-a2a.yml
  - type: AgentCard
    name: Agent card (provider-hosted)
    url: https://mcp.phoslabs.io/.well-known/agent-card.json
  - type: OAuthScopes
    url: scopes/phoslabs-io-scopes.yml
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api#mcp-integration
  - type: Pricing
    url: https://phoslabs.io/credits
- aid: phoslabs-io:phoslabs-io-audit-api
  name: Phos Labs Audit API
  description: The Audit API from Phos Labs — 1 operation(s) for audit.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Audit
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-audit-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
- aid: phoslabs-io:phoslabs-io-copy-api
  name: Phos Labs Copy API
  description: The Copy API from Phos Labs — 1 operation(s) for copy.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Copy
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-copy-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
- aid: phoslabs-io:phoslabs-io-detect-biases-api
  name: Phos Labs Detect Biases API
  description: The Detect Biases API from Phos Labs — 1 operation(s) for detect biases.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Detect Biases
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-detect-biases-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
- aid: phoslabs-io:phoslabs-io-diagnose-api
  name: Phos Labs Diagnose API
  description: The Diagnose API from Phos Labs — 1 operation(s) for diagnose.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Diagnose
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-diagnose-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
- aid: phoslabs-io:phoslabs-io-fix-checkout-api
  name: Phos Labs Fix Checkout API
  description: The Fix Checkout API from Phos Labs — 1 operation(s) for fix checkout.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Fix Checkout
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-fix-checkout-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
- aid: phoslabs-io:phoslabs-io-pricing-api
  name: Phos Labs Pricing API
  description: The Pricing API from Phos Labs — 1 operation(s) for pricing.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Pricing
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-pricing-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
- aid: phoslabs-io:phoslabs-io-tools-api
  name: Phos Labs Tools API
  description: The Tools API from Phos Labs — 1 operation(s) for tools.
  humanURL: https://github.com/phoslabs/behavioral-science-api
  baseURL: https://phoslabs.io/api/v1
  tags:
  - Tools
  properties:
  - type: OpenAPI
    url: openapi/phoslabs-io-tools-api-openapi.yml
  - type: Documentation
    url: https://github.com/phoslabs/behavioral-science-api
  - type: APIReference
    url: https://phoslabs.io/api/v1/tools
  - type: GettingStarted
    url: https://github.com/phoslabs/behavioral-science-api#quick-start
  - type: Authentication
    url: authentication/phoslabs-io-authentication.yml
  - type: Conventions
    url: conventions/phoslabs-io-conventions.yml
  - type: ErrorCatalog
    url: errors/phoslabs-io-problem-types.yml
  - type: DataModel
    url: data-model/phoslabs-io-data-model.yml
  - type: RateLimits
    url: rate-limits/phoslabs-io-rate-limits.yml
  - type: Plans
    url: plans/phoslabs-io-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/phoslabs-io-lifecycle.yml
  - type: AgenticAccess
    url: agentic-access/phoslabs-io-agentic-access.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/phoslabs-io-capability-edges.yml
  name: Phos Labs Business Capability Map
- type: AgentSkill
  url: skills/phoslabs-io-diagnose-and-fix-a-funnel.md
- type: AgentSkill
  url: skills/phoslabs-io-price-and-write-an-offer.md
- type: Website
  url: https://phoslabs.io/
- type: Documentation
  url: https://github.com/phoslabs/behavioral-science-api
- type: APIReference
  url: https://phoslabs.io/api/v1/tools
- type: GettingStarted
  url: https://github.com/phoslabs/behavioral-science-api#quick-start
- type: Pricing
  url: https://phoslabs.io/credits
- type: Support
  url: mailto:support@phoslabs.io
- type: TermsOfService
  url: https://phoslabs.io/terms
- type: PrivacyPolicy
  url: https://phoslabs.io/privacy
- type: GitHubOrganization
  url: https://github.com/phoslabs
- type: LLMsTxt
  url: llms/phoslabs-io-llms.txt
- type: AgentCard
  url: a2a/phoslabs-io-a2a.yml
- type: WellKnown
  name: Probed /.well-known/ index (5 served documents on mcp.phoslabs.io)
  url: well-known/phoslabs-io-well-known.yml
- type: MCPServer
  url: mcp/phoslabs-io-mcp.yml
- type: ToolCrosswalk
  url: mcp/phoslabs-io-tool-crosswalk.yml
- type: Packages
  url: packages/phoslabs-io-packages.yml
- type: Authentication
  url: authentication/phoslabs-io-authentication.yml
- type: OAuthScopes
  url: scopes/phoslabs-io-scopes.yml
- type: Conventions
  url: conventions/phoslabs-io-conventions.yml
- type: ErrorCatalog
  url: errors/phoslabs-io-problem-types.yml
- type: Lifecycle
  url: lifecycle/phoslabs-io-lifecycle.yml
- type: Conformance
  url: conformance/phoslabs-io-conformance.yml
- type: DataModel
  url: data-model/phoslabs-io-data-model.yml
- type: Overlay
  url: overlays/phoslabs-io-openapi-overlay.yaml
- type: RateLimits
  url: rate-limits/phoslabs-io-rate-limits.yml
- type: Plans
  url: plans/phoslabs-io-plans-pricing.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/phoslabs-io-agentic-access.yml
- type: DomainSecurity
  url: security/phoslabs-io-domain-security.yml
- type: DataSubjectRequest
  url: regulatory/phoslabs-io-regulatory-posture.yml
- type: Subprocessors
  url: regulatory/phoslabs-io-regulatory-posture.yml
- type: AITransparency
  url: regulatory/phoslabs-io-regulatory-posture.yml
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 26
  pass: local-v3

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