e18e

e18e (Ecosystem Performance) is an initiative focused on improving JavaScript package performance by cleaning up redundant dependencies, speeding up builds, and leveling up code quality. The platform offers documentation, learning resources, and community engagement through Discord and sponsorships, aiming to provide visibility and support for open‑source developers working on ecosystem optimization.

e18e is listed with 1 API on the APIs.io network. Tagged areas include Ecosystem, Performance, JavaScript, Open Source, and Community.

The e18e catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

e18e’s developer surface includes CLI, documentation, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.0/100 emerging Agent 23/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API

Ecosystem Performance JavaScript Open Source Community

Kin Score

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

Composite quality — 18.0/100 · emerging

Contract Quality 4.1 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 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

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):

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)
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)

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 19.3 — up to +20.2 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 23.8 — up to +15.2 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/e18e-dev/apis.yml: open an issue on github.com/api-evangelist/e18e-dev 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 1

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

e18e API

e18e API as documented publicly: 3 operations. Contract generated from the documentation by API Evangelist (2026-11-06); not the provider's own document.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

E18E Dev Context

2 classes · 1 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

e18e API Rules

26 rules · 24 errors 1 warnings 1 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

GetDataResponse

1 properties

JSON SCHEMA

PostDataResponse

1 properties

JSON SCHEMA

Security Posture 1

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

E18E Dev Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

CLI

CLI

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

Learning

Learning

Operate 1

Status, limits, changes, and where to get help

Community

Community

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: e18e-dev
name: e18e
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://e18e.dev/e18e-og-image.png
description: e18e (Ecosystem Performance) is an initiative focused on improving JavaScript package performance by cleaning
  up redundant dependencies, speeding up builds, and leveling up code quality. The platform offers documentation, learning
  resources, and community engagement through Discord and sponsorships, aiming to provide visibility and support for open‑source
  developers working on ecosystem optimization.
url: https://artifacts.apis.io/e18e-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-06 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-06'
modified: '2026-11-06'
tags:
- Ecosystem
- Performance
- JavaScript
- Open Source
- Community
tags_raw:
- Ecosystem
- Performance
- JavaScript
- OpenSource
- Community
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/e18e-dev-rules.yml
- type: JSONLD
  url: json-ld/e18e-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/e18e-dev-vocabulary.yml
- type: DataModel
  url: data-model/e18e-dev-data-model.yml
- type: CLI
  url: cli/e18e-dev-cli.yml
- type: Conformance
  url: conformance/e18e-dev-conformance.yml
- type: LLMsTxt
  url: llms/e18e-dev-llms.txt
- type: Hosts
  url: hosts/e18e-dev-hosts.yml
- type: Vendors
  url: vendors/e18e-dev-vendors.yml
- type: GitHubOrganization
  url: https://github.com/e18e
- type: DomainSecurity
  url: security/e18e-dev-domain-security.yml
- type: Website
  url: https://e18e.dev/
- type: Documentation
  url: https://e18e.dev/docs/
- type: Blog
  url: https://e18e.dev/blog
- type: Learning
  url: https://e18e.dev/learn/
- type: Community
  url: https://chat.e18e.dev
apis:
- aid: e18e-dev:e18e-dev-api
  name: e18e API
  description: 'e18e API as documented publicly: 3 operations. Contract generated from the documentation by API Evangelist
    (2026-11-06); not the provider''s own document.'
  humanURL: https://e18e.dev/docs/replacements/fetch
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/e18e-dev-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/e18e-dev-get-data-response-schema.json
  - type: JSONSchema
    url: json-schema/e18e-dev-post-data-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation pages are static HTML with no machine‑readable OpenAPI, AsyncAPI, GraphQL or other contract files.
  evidence:
  - url: https://e18e.dev/docs/
    status: 200
  checked: '2026-11-06'
x-enrichment:
  date: '2026-11-06'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

e18e API — frequently asked questions

Does e18e have an API?

Yes. APIs.io lists 1 API from e18e, including e18e API.

Is there an OpenAPI specification for the e18e API?

Yes. APIs.io indexes 1 OpenAPI specification for e18e, each linked for download from this page.

Is the e18e API ready for AI agents?

e18e has a Kin Score of 18.0 out of 100 (emerging) and an Agent Readiness score of 22.8 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
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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