Spear

Spear is a developer platform focused on API development workflows, providing tools for API design, collaboration, and delivery. The platform enables teams to build, test, and ship APIs faster through a unified workspace experience.

Spear is listed with 1 API on the APIs.io network. Tagged areas include API Development, Collaboration, Developer Tools, and Platform.

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

🌐 Visit website 📡 Profile data on GitHub

11.4/100 emerging ▬ flat Agent 1/100 human only Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessFreemium

1 API

API Development Collaboration Developer Tools Platform

Kin Score

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

Composite quality — 11.4/100 · emerging

Contract Quality 2.3 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 1.3 / 17

Operational Transparency 0.9 / 11

Contract Governance 1.0 / 10

Discoverability 4.7 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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
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

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 10.7 — up to +22.3 composite points
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 7.9 — up to +18.4 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/spear/apis.yml: open an issue on github.com/api-evangelist/spear 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.

Spear

Spear is a developer platform focused on API development workflows, providing tools for API design, collaboration, and delivery through a unified workspace experience.

Pricing Plans 1

Published pricing tiers and plan structures.

Spear Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Spear Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Spear Finops

FINOPS

Semantic Vocabularies 1

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

Spear Context

3 classes · 10 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Spear — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 1

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

Spear Workspace

8 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Spear Workspace Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Spear Workspace Example

3 fields

EXAMPLE

Security Posture 1

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

Spear Domain Security

TLSv1.3

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText

LlmsText

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: spear
url: https://raw.githubusercontent.com/api-evangelist/spear/refs/heads/main/apis.yml
name: Spear
description: Spear is a developer platform focused on API development workflows, providing tools for API design, collaboration,
  and delivery. The platform enables teams to build, test, and ship APIs faster through a unified workspace experience.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-02'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/spear.png
access: 3rd-Party
tags:
- API Development
- Collaboration
- Developer Tools
- Platform
created: '2024-01-01'
modified: '2026-05-02'
position: Consuming
segments:
- Developer Tools
- API Development
apis:
- aid: spear:spear
  name: Spear
  tags:
  - API Development
  - Collaboration
  - Developer Tools
  - Platform
  humanURL: https://spear.dev
  properties:
  - url: https://spear.dev
    type: Website
  description: Spear is a developer platform focused on API development workflows, providing tools for API design, collaboration,
    and delivery through a unified workspace experience.
common:
- type: Plans
  url: plans/spear-plans-pricing.yml
- type: RateLimits
  url: rate-limits/spear-rate-limits.yml
- type: FinOps
  url: finops/spear-finops.yml
- type: DomainSecurity
  url: security/spear-domain-security.yml
- url: https://spear.dev
  name: Website | Spear
  type: Website
  description: 'null'
- type: LlmsText
  url: https://spear.dev/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

Spear API — frequently asked questions

Does Spear have an API?

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

How much does the Spear API cost?

APIs.io lists 3 pricing plans for Spear, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Spear API ready for AI agents?

Spear has a Kin Score of 11.4 out of 100 (emerging) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-02.

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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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