50heads

50heads provides a platform where users can ask a single short question to fifty verified people on their phones and receive aggregated answers. The service emphasizes verification, fairness, and transparency, ensuring each respondent’s phone number is confirmed and the answer originates from a real person. It offers tools for AI agents, pricing plans, and documentation for developers, aiming to replace guesswork with real human insight.

50heads is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Verification, Surveys, and Platform.

The 50heads catalog on APIs.io includes 1 event-driven AsyncAPI specification.

50heads’ developer surface includes CLI, authentication, support, pricing, engineering blog, getting-started guide, API reference, and 27 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

43.7/100 developing ▼ -12.4 Agent 23/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaidSelf serve

1 API

Company Artificial Intelligence Verification Surveys Platform

Kin Score

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

Composite quality — 43.7/100 · developing

Contract Quality 8.3 / 21

Developer Ergonomics 7.5 / 17

Access Clarity 11.2 / 17

Operational Transparency 2.2 / 11

Contract Governance 0.8 / 10

Discoverability 5.7 / 9

Regulatory Posture 4.0 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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):

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
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 39.0 — up to +15.3 composite points
Developer Ergonomics scores 44.0 — up to +11.2 composite points
Contract Governance scores 8.3 — up to +11.0 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/50heads-com/apis.yml: open an issue on github.com/api-evangelist/50heads-com 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 →

APIs 1

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

50heads API

Ask verified people a short question and see what they think.

50heads API pricing

Prices published by 50heads, read 2026-10-31 from 50heads.com/en-us/pricing.

Plan	Price
Pack 1	$27 2,000 credits
Pack 2	$67 5,100 credits +2% bonus
Pack 3	$135 10,400 credits +4% bonus
Pack 4	$335 26,500 credits +6% bonus
Pack 5	$670 54,000 credits +8% bonus
Pack 6	$1,340 110,000 credits +10% bonus

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

50Heads Com Plans Pricing

6 plans

PLANS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

50Heads Com Webhooks

ASYNCAPI

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.

50Heads Com Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 4

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

50Heads Com Authentication

2 schemes

SECURITY

50Heads Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

50Heads Com Vulnerability Disclosure

security.txt · contact published

SECURITY

50Heads Com Trust Center

SOC 2, ISO 27001

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Vocabulary

Webhooks

Idempotency

Conventions

Conformance

Webhooks

Build 4

SDKs, sample code, and the tooling you integrate with

CLI

CLI

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 7

Authentication, authorization, and security posture

Compliance

Authentication

SecurityTxt

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 7

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 3

The organization behind the API

Newsroom

Newsroom

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: 50heads-com
name: 50heads
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Paid · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://50heads.com/og/en-us/home.png
description: 50heads provides a platform where users can ask a single short question to fifty verified people on their phones
  and receive aggregated answers. The service emphasizes verification, fairness, and transparency, ensuring each respondent’s
  phone number is confirmed and the answer originates from a real person. It offers tools for AI agents, pricing plans, and
  documentation for developers, aiming to replace guesswork with real human insight.
url: https://artifacts.apis.io/50heads-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Company
- Artificial Intelligence
- Verification
- Surveys
- Platform
tags_raw:
- Company
- AI
- Verification
- Survey
- Platform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/50heads-com-plans-pricing.yml
- type: Vocabulary
  url: vocabulary/50heads-com-vocabulary.yml
- type: Webhooks
  url: asyncapi/50heads-com-webhooks.yml
- type: CLI
  url: cli/50heads-com-cli.yml
- type: Idempotency
  url: conventions/50heads-com-conventions.yml
- type: Conventions
  url: conventions/50heads-com-conventions.yml
- type: Compliance
  url: https://50heads.com/en-us/trust
- type: Authentication
  url: authentication/50heads-com-authentication.yml
- type: Conformance
  url: conformance/50heads-com-conformance.yml
- type: LLMsTxt
  url: llms/50heads-com-llms.txt
- type: SecurityTxt
  url: well-known/50heads-com-security.txt
- type: WellKnown
  url: well-known/50heads-com-well-known.yml
- type: Hosts
  url: hosts/50heads-com-hosts.yml
- type: Vendors
  url: vendors/50heads-com-vendors.yml
- type: SDKs
  url: packages/50heads-com-packages.yml
- type: Packages
  url: packages/50heads-com-packages.yml
- type: Webhooks
  url: https://50heads.com/fr/help/api-and-mcp/webhooks
- type: TermsOfService
  url: https://50heads.com/en-us/legal/terms
- type: Support
  url: https://50heads.com/en-us/help
- type: StatusPage
  url: https://status.50heads.com/
- type: Security
  url: https://50heads.com/en-us/security
- type: PrivacyPolicy
  url: https://50heads.com/en-us/legal/privacy
- type: Pricing
  url: https://50heads.com/en-us/pricing
- type: Newsroom
  url: https://50heads.com/en-us/press
- type: Login
  url: https://50heads.com/app/sign-in
- type: GitHubOrganization
  url: https://github.com/50heads
- type: Blog
  url: https://50heads.com/en-us/blog
- type: GettingStarted
  url: https://50heads.com/en-us/docs/mcp
- type: DeveloperPortal
  url: https://api.50heads.com\
- type: APIReference
  url: https://50heads.com/en-us/docs
- type: TrustCenter
  url: security/50heads-com-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/50heads-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/50heads-com-domain-security.yml
- type: Website
  url: https://50heads.com/
apis:
- name: 50heads API
  description: Ask verified people a short question and see what they think.
  humanURL: https://50heads.com/en-us/docs/api
  baseURL: https://api.50heads.com
  aid: 50heads-com:50heads-api
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

50heads API — frequently asked questions

Does 50heads have an API?

Yes. APIs.io lists 1 API from 50heads, including 50heads API.

How do I authenticate with the 50heads API?

50heads uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as 50Heads Com Authentication.

How much does the 50heads API cost?

50heads publishes its prices; its Pack 1 plan is $27 2,000 credits as of 2026-10-31. APIs.io lists 6 pricing plans for 50heads, with each plan's price, limits and inclusions under Pricing on this page.

Is the 50heads API ready for AI agents?

50heads has a Kin Score of 43.7 out of 100 (developing) and an Agent Readiness score of 23.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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