Coil

Coil is a solo-built AI-powered stock scanner that provides real-time market data and trading signals for users and AI agents. It offers a live board, a scanner tool, and an MCP server for agents to access market information programmatically. The platform emphasizes honesty, transparency, and privacy, with clear rules governing claims and data usage. Coil aims to empower both individuals and automated agents in making informed trading decisions.

Coil publishes 7 API contracts indexed on the APIs.io network, including Access & Keys API, Change Detection API, Coil Live API, and 4 more. Tagged areas include Finance, Artificial Intelligence, Stock-Scanner, Real-Time Data, and Trading.

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

Coil’s developer surface includes authentication, documentation, engineering blog, API reference, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.2/100 thin Agent 41/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 Agent Skills

Finance Artificial IntelligenceStock-ScannerReal-Time Data Trading

Kin Score

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

Composite quality — 37.2/100 · thin

Contract Quality 10.9 / 21

Developer Ergonomics 5.6 / 17

Access Clarity 4.9 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.9 / 15

Agent readiness — 41/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

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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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
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)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's

3 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 28.9 — up to +14.2 composite points
Developer Ergonomics scores 32.7 — up to +13.5 composite points
Contract Quality scores 51.1 — up to +12.2 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/coil-trade/apis.yml: open an issue on github.com/api-evangelist/coil-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 →

Standards implemented 4

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 (flavored)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

Coil Access & Keys API

Free credentials — an instant email key, or wallet sign-in (SIWX, CAIP-122). Signatures move no funds.

Coil Change Detection API

The polling loop: hash the board for free, buy the delta only when it moves. An unchanged hash is never billed.

Coil Coil Live API

Subscription lane ($49/mo): the engine-grade feed and the served, versioned trading discipline. License key, never sold per call.

Coil Market Data API

Paid per-read slices of the scored board — regime, buy list, per-name and per-sector reads, crypto. USDC over x402; no account, no key.

Coil Paid reads API

The Paid reads API from Coil — 2 operation(s) for paid reads.

Coil Research API

The Research API from Coil — 11 operation(s) for research.

Coil Verification API

Free, before any payment — the append-only commitment log, the forward-return audit of our own scores, and the engine's record vs SPY/QQQ. Check the publisher before trusting it.

Scroll for all 7

Agent Skills 1

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

coil-trade-market-overview

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Coil API Rules

56 rules · 46 errors 8 warnings 2 info

SPECTRAL

Security Posture 2

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

Coil Trade Authentication

4 schemes

SECURITY

Coil Trade Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Coil Trade Agentic Access

52 operations · 3 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

WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

Authentication

TrustCenter

Security

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: coil-trade
name: Coil
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://coil.trade/assets/img/og-cover.png?v=9
description: Coil is a solo-built AI-powered stock scanner that provides real-time market data and trading signals for users
  and AI agents. It offers a live board, a scanner tool, and an MCP server for agents to access market information programmatically.
  The platform emphasizes honesty, transparency, and privacy, with clear rules governing claims and data usage. Coil aims
  to empower both individuals and automated agents in making informed trading decisions.
url: https://artifacts.apis.io/coil-trade/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Finance
- Artificial Intelligence
- Stock-Scanner
- Real-Time Data
- Trading
tags_raw:
- Finance
- AI
- Stock-Scanner
- Real-Time-Data
- Trading
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/coil-trade-agentic-access.yml
- type: Spectral
  url: rules/coil-trade-rules.yml
- type: Vocabulary
  url: vocabulary/coil-trade-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/coil-trade-authentication.yml
- type: ErrorCatalog
  url: errors/coil-trade-problem-types.yml
- type: Conformance
  url: conformance/coil-trade-conformance.yml
- type: LLMsTxt
  url: llms/coil-trade-llms.txt
- type: AgentCard
  url: a2a/coil-trade-a2a.yml
- type: WellKnown
  url: well-known/coil-trade-well-known.yml
- type: Hosts
  url: hosts/coil-trade-hosts.yml
- type: Vendors
  url: vendors/coil-trade-vendors.yml
- type: TrustCenter
  url: https://coil.trade/trust
- type: TermsOfService
  url: https://coil.trade/terms
- type: Security
  url: https://coil.trade/security
- type: PrivacyPolicy
  url: https://coil.trade/privacy
- type: GitHubOrganization
  url: https://github.com/joeyfife
- type: Documentation
  url: https://coil.trade/guides/automate-soxl-soxs-ai-agent
- type: Blog
  url: https://coil.trade/blog/
- type: APIReference
  url: https://coil.trade/agents/quickstart
- type: DomainSecurity
  url: security/coil-trade-domain-security.yml
- type: Website
  url: https://coil.trade/
apis:
- aid: coil-trade:coil-trade-access-keys-api
  name: Coil Access & Keys API
  description: Free credentials — an instant email key, or wallet sign-in (SIWX, CAIP-122). Signatures move no funds.
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Access & Keys
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-access-keys-api-openapi.yml
- aid: coil-trade:coil-trade-change-detection-api
  name: Coil Change Detection API
  description: 'The polling loop: hash the board for free, buy the delta only when it moves. An unchanged hash is never billed.'
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Change Detection
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-change-detection-api-openapi.yml
- aid: coil-trade:coil-trade-coil-live-api
  name: Coil Coil Live API
  description: 'Subscription lane ($49/mo): the engine-grade feed and the served, versioned trading discipline. License key,
    never sold per call.'
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Coil Live
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-coil-live-api-openapi.yml
- aid: coil-trade:coil-trade-market-data-api
  name: Coil Market Data API
  description: Paid per-read slices of the scored board — regime, buy list, per-name and per-sector reads, crypto. USDC over
    x402; no account, no key.
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Market Data
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-market-data-api-openapi.yml
- aid: coil-trade:coil-trade-paid-reads-api
  name: Coil Paid reads API
  description: The Paid reads API from Coil — 2 operation(s) for paid reads.
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Paid reads
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-paid-reads-api-openapi.yml
- aid: coil-trade:coil-trade-research-api
  name: Coil Research API
  description: The Research API from Coil — 11 operation(s) for research.
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Research
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-research-api-openapi.yml
- aid: coil-trade:coil-trade-verification-api
  name: Coil Verification API
  description: Free, before any payment — the append-only commitment log, the forward-return audit of our own scores, and
    the engine's record vs SPY/QQQ. Check the publisher before trusting it.
  humanURL: https://coil.trade/docs
  baseURL: https://coil.trade
  tags:
  - Verification
  properties:
  - type: OpenAPI
    url: openapi/coil-trade-verification-api-openapi.yml
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 27
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Coil API — frequently asked questions

Does Coil have an API?

Yes. APIs.io lists 7 APIs from Coil, including Coil Access & Keys API, Coil Change Detection API and Coil Coil Live API, and 4 more.

Is there an OpenAPI specification for the Coil API?

Yes. APIs.io indexes 7 OpenAPI specifications for Coil, each linked for download from this page.

How do I authenticate with the Coil API?

Coil documents its authentication (4 schemes). The details are profiled on APIs.io as Coil Trade Authentication.

Is the Coil API ready for AI agents?

Coil has a Kin Score of 37.2 out of 100 (thin) and an Agent Readiness score of 41.0 (agent-ready), scored by API Evangelist on 2026-11-06.

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