Composer

Composer is a consult‑before‑you‑act AI service that helps users perform multi‑step data and research tasks by generating a workflow, providing a free price quote, and executing the plan for a paid x402 fee. It aggregates results from multiple providers, offering pricing comparisons, diligence packs, and other AI‑driven analyses, while handling payments and delivering synthesized answers.

Composer is listed with 1 API on the APIs.io network. Tagged areas include Artificial Intelligence, Research, Workflows, Pricing, and Data.

The Composer catalog on APIs.io includes 1 Spectral governance ruleset.

Composer’s developer surface includes documentation, API reference, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

13.6/100 emerging ▬ flat Agent 18/100 agent aware Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessOpen

1 API 1 MCP Servers 2 Agent Skills

Artificial Intelligence Research Workflows Pricing Data

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 13.6/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.9 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.2 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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)
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
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

7 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
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 23.1 — up to +15.4 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/agenticpaywall-com/apis.yml: open an issue on github.com/api-evangelist/agenticpaywall-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 →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

Composer API

Composer API provides multi-step research workflow composition and execution with pricing via x402.

MCP Servers 1

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

Composer MCP Server

Remote MCP server at composer.agenticpaywall.com.

MCP SERVER

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

get-quote

AGENT SKILL

run-workflow

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Composer API Rules

13 rules · 11 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Agenticpaywall Com Authentication

0 schemes

SECURITY

Agenticpaywall Com Domain Security

TLSv1.3

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Agenticpaywall Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Agenticpaywall Com Agentic Access

2 operations · 1 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

ErrorCatalog

ErrorCatalog

Conformance

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: agenticpaywall-com
name: Composer
description: Composer is a consult‑before‑you‑act AI service that helps users perform multi‑step data and research tasks by
  generating a workflow, providing a free price quote, and executing the plan for a paid x402 fee. It aggregates results from
  multiple providers, offering pricing comparisons, diligence packs, and other AI‑driven analyses, while handling payments
  and delivering synthesized answers.
url: https://artifacts.apis.io/agenticpaywall-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
specificationVersion: '0.20'
created: '2026-11-01'
modified: '2026-11-01'
tags:
- Artificial Intelligence
- Research
- Workflows
- Pricing
- Data
tags_raw:
- AI
- Research
- Workflow
- Pricing
- Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/agenticpaywall-com-agentic-access.yml
- type: Spectral
  url: rules/agenticpaywall-com-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/agenticpaywall-com-problem-types.yml
- type: Conformance
  url: conformance/agenticpaywall-com-conformance.yml
- type: LLMsTxt
  url: llms/agenticpaywall-com-llms.txt
- type: AgentCard
  url: a2a/agenticpaywall-com-a2a.yml
- type: MCPServer
  url: mcp/agenticpaywall-com-mcp.yml
- type: Hosts
  url: hosts/agenticpaywall-com-hosts.yml
- type: Vendors
  url: vendors/agenticpaywall-com-vendors.yml
- type: DomainSecurity
  url: security/agenticpaywall-com-domain-security.yml
- type: Website
  url: https://agenticpaywall.com/
- type: Documentation
  url: https://agenticpaywall.com/docs
- type: APIReference
  url: https://agenticpaywall.com/docs
apis:
- aid: agenticpaywall-com:composer-api
  name: Composer API
  description: Composer API provides multi-step research workflow composition and execution with pricing via x402.
  humanURL: https://composer.agenticpaywall.com
  baseURL: https://composer.agenticpaywall.com
  properties:
    x-provenance: harvested
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 28
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Composer API — frequently asked questions

Does Composer have an API?

Yes. APIs.io lists 1 API from Composer, including Composer API.

How do I authenticate with the Composer API?

Composer documents its authentication (0 schemes). The details are profiled on APIs.io as Agenticpaywall Com Authentication.

Does Composer have an MCP server?

Yes. APIs.io lists 1 MCP server for Composer: Remote MCP server at composer.agenticpaywall.com.

Is the Composer API ready for AI agents?

Composer has a Kin Score of 13.6 out of 100 (emerging) and an Agent Readiness score of 17.8 (agent-aware), scored by API Evangelist on 2026-11-02.

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