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openapi: 3.2.0
info:
title: Evangelist Network Papers API
version: 1.2.0
summary: Sixteen years of API research as one API.
description: 'The API Evangelist network — 5,000+ stories, 77 topic areas, 2,400+ governance building
blocks (guidance, rules, policies, standards, strategies, schema, properties, experiences,
lifecycle), conversations, videos, white papers, tools, timelines, services, and the API
vocabulary — served as a single, searchable REST API.
**Tiers.** The API works without a key on the free tier (5 req/s, 1,000 req/day). Requests
from apievangelist.com network sites get the internal tier automatically. Higher-limit keys
are available by request — email info@apievangelist.com.
**Providers.** The API provider catalog (4,500+ companies) intentionally lives on
[APIs.io](https://apis.io/developer/) — this API covers API Evangelist''s own research
network and does not duplicate it.
**MCP.** Every resource here is also available as MCP tools at
`https://mcp.apievangelist.com/mcp` (Streamable HTTP), including concierge tools
(`get_overview`, `guide_topic`) that bundle curated guidance for a topic.
'
contact:
name: API Evangelist
email: info@apievangelist.com
url: https://apievangelist.com
license:
name: CC BY-SA 4.0
url: https://creativecommons.org/licenses/by-sa/4.0/
servers:
- url: https://api.apievangelist.com/v1
security:
- {}
- ApiKeyAuth: []
tags:
- name: Papers
description: White papers and reports, and the relevance graph between them.
paths:
/papers/{slug}/related:
get:
operationId: getPaperRelated
x-tier: free
x-mcp-tool: find_related
x-agent-skill: research-with-api-evangelist
tags:
- Papers
summary: Related content across the network.
description: Content related to a paper. Ranked by shared-tag relevance (rare, specific tags weigh most). Cross-type by default; filter with types.
parameters:
- name: slug
in: path
required: true
schema:
type: string
- name: types
in: query
description: Restrict to these content types (comma-separated).
schema:
type: string
- $ref: '#/components/parameters/Limit'
responses:
'200':
description: A page of related content.
content:
application/json:
schema:
type: object
additionalProperties: true
example:
meta:
total: 0
page: 1
limit: 2
pages: 0
query:
related_to: papers:change-on-the-agent-surface
types: null
data: []
headers:
RateLimit-Policy:
$ref: '#/components/headers/RateLimitPolicy'
X-RateLimit-Limit:
$ref: '#/components/headers/XRateLimitLimit'
X-RateLimit-Window:
$ref: '#/components/headers/XRateLimitWindow'
X-RateLimit-Tier:
$ref: '#/components/headers/XRateLimitTier'
'404':
$ref: '#/components/responses/NotFound'
components:
headers:
XRateLimitTier:
description: The tier this request was served on — `free`, `pro`, `business`, `internal` or `owner`. Keyless requests are `free`; requests from an apievangelist.com origin are `internal`.
schema:
type: string
examples:
- free
XRateLimitLimit:
description: The daily request quota for the tier that served this response.
schema:
type: integer
examples:
- 1000
XRateLimitWindow:
description: The quota window in seconds. Always 86400 (one day).
schema:
type: integer
examples:
- 86400
RateLimitPolicy:
description: 'The rate-limit policy in force for the tier that served this response, in RFC 9331 quota-policy syntax: `"quota";q=1000;w=86400, "burst";q=5;w=1` — a daily quota and a per-second burst. This is the POLICY, not a live counter: `RateLimit-Remaining` and `RateLimit-Reset` are deliberately not sent, because the quota is enforced by the gateway and there is no per-key usage accounting to read. Pace against the policy, and treat a 429 as authoritative.'
schema:
type: string
examples:
- '"quota";q=1000;w=86400, "burst";q=5;w=1'
schemas:
Error:
type: object
properties:
error:
type: string
detail:
type: string
responses:
NotFound:
description: No such resource.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
parameters:
Limit:
name: limit
in: query
schema:
type: integer
minimum: 1
maximum: 100
default: 25
securitySchemes:
ApiKeyAuth:
type: apiKey
in: header
name: x-api-key
description: Optional — raises rate limits above the keyless free tier.
x-apis-io:
tiers:
free:
label: Free
description: Browse, search, and read summaries across the whole network — stories, areas, guidance, building blocks, papers, tags, related. Keyless.
pro:
label: Pro
description: The research depth — full content (include=content), curated topic guides (/guide), and catalog intelligence (/stats). Requires X-API-Key.
plans: https://developer.apievangelist.com/plans/
mcp:
endpoint: https://mcp.apievangelist.com/mcp
agentSkills:
index: https://apievangelist.com/.well-known/agent-skills/index.json
prompts:
- name: where_can_ae_help
tier: free
description: Map a team's API need to the relevant research areas + the services Kin Lane offers.
uses:
- search_api_evangelist
- find_services
- name: catch_up
tier: free
description: Catch up on a topic — the most recent stories, newest first.
uses:
- find_posts
- name: research_topic
tier: pro
description: 'PRO — Deep-research a topic: the curated guide bundle plus the full research bodies.'
uses:
- guide_topic
- get_post
- find_related
- name: governance_starter_kit
tier: pro
description: 'PRO — Assemble an API governance starter kit: guidance, rules, policies, standards + services.'
uses:
- guide_topic
- find_building_blocks
- name: vendor_landscape
tier: pro
description: PRO — Map the vendor + tooling landscape for a capability, with research context.
uses:
- find_solutions
- find_tools
- guide_topic
resources:
- uri: ae://overview
tier: free
description: Service root — what the network offers, counts, entry points, how to engage.
operation: getServiceInfo
- uri: ae://services
tier: free
description: The services Kin Lane offers teams.
operation: listServices
- uri: ae://contact
tier: free
description: Every way to reach API Evangelist.
operation: getContact
- uri: ae://stats
tier: pro
description: PRO — per-type counts, stories-per-year, top tags by reach.
operation: getStats
- uri: ae://area/{slug}
tier: free
description: One topic area with its related-area graph.
operation: getArea
- uri: ae://tag/{slug}
tier: free
description: One tag with per-type counts and everything it labels.
operation: getTag
- uri: ae://post/{slug}
tier: free
description: One story by slug.
operation: getPost
- uri: ae://guide/{topic}
tier: pro
description: PRO — a curated cross-network guide bundle for a topic.
operation: getGuide
operations:
getServiceInfo:
tier: free
mcpTool: get_overview
searchNetwork:
tier: free
mcpTool: search_api_evangelist
agentSkill: brief-on-topic
listPosts:
tier: free
mcpTool: find_posts
agentSkill: brief-on-topic
getPost:
tier: free
mcpTool: get_post
listAreas:
tier: free
mcpTool: find_areas
agentSkill: brief-on-topic
getArea:
tier: free
mcpTool: get_area
listGuidanceHistory:
tier: free
mcpTool: get_guidance_section
listGuidanceTechnology:
tier: free
mcpTool: get_guidance_section
listGuidanceBusiness:
tier: free
mcpTool: get_guidance_section
listGuidancePolitics:
tier: free
mcpTool: get_guidance_section
listGuidanceGovernance:
tier: free
mcpTool: get_guidance_section
listGuidanceEvangelism:
tier: free
mcpTool: get_guidance_section
listGuidance:
tier: free
mcpTool: find_building_blocks
agentSkill: governance-starter-kit
getGuidanceItem:
tier: free
mcpTool: get_building_block
listPolicies:
tier: free
mcpTool: find_building_blocks
agentSkill: governance-starter-kit
getPoliciesItem:
tier: free
mcpTool: get_building_block
listRules:
tier: free
mcpTool: find_building_blocks
agentSkill: governance-starter-kit
getRulesItem:
tier: free
mcpTool: get_building_block
listStandards:
tier: free
mcpTool: find_building_blocks
agentSkill: governance-starter-kit
getStandardsItem:
tier: free
mcpTool: get_building_block
listSolutions:
tier: free
mcpTool: find_solutions
agentSkill: map-vendor-landscape
getSolution:
tier: free
mcpTool: get_solution
listTools:
tier: free
mcpTool: find_tools
agentSkill: map-vendor-landscape
getTool:
tier: free
mcpTool: get_tool
listSchema:
tier: free
mcpTool: find_building_blocks
getSchemaItem:
tier: free
mcpTool: get_building_block
listProperties:
tier: free
mcpTool: find_building_blocks
getPropertiesItem:
tier: free
mcpTool: get_building_block
listStrategies:
tier: free
mcpTool: find_building_blocks
getStrategiesItem:
tier: free
mcpTool: get_building_block
listExperiences:
tier: free
mcpTool: find_building_blocks
getExperiencesItem:
tier: free
mcpTool: get_building_block
listLifecycle:
tier: free
mcpTool: find_building_blocks
getLifecycleItem:
tier: free
mcpTool: get_building_block
listConversations:
tier: free
mcpTool: find_conversations
getConversation:
tier: free
mcpTool: get_conversation
listVideos:
tier: free
mcpTool: find_videos
getVideo:
tier: free
mcpTool: get_video
listPapers:
tier: free
mcpTool: find_papers
agentSkill: research-with-api-evangelist
getPaper:
tier: free
mcpTool: get_paper
listNewsletters:
tier: free
mcpTool: search_api_evangelist
listVocabulary:
tier: free
mcpTool: find_vocabulary
listVocabularyCategory:
tier: free
mcpTool: find_vocabulary
listFeeds:
tier: free
mcpTool: get_feeds
getTimelineApi:
tier: free
mcpTool: get_timeline
getTimelineResources:
tier: free
mcpTool: get_timeline
getTimelineIndustries:
tier: free
mcpTool: get_timeline
getTimelinePeople:
tier: free
mcpTool: get_timeline
listServices:
tier: free
mcpTool: find_services
agentSkill: find-where-ae-helps
getService:
tier: free
mcpTool: get_service
agentSkill: find-where-ae-helps
getContact:
tier: free
mcpTool: get_contact
agentSkill: find-where-ae-helps
listTags:
tier: free
mcpTool: find_tags
agentSkill: brief-on-topic
getTag:
tier: free
mcpTool: get_tag
agentSkill: brief-on-topic
getGuide:
tier: pro
mcpTool: guide_topic
agentSkill: research-with-api-evangelist
getStats:
tier: pro
mcpTool: get_stats
getPostRelated:
tier: free
mcpTool: find_related
agentSkill: brief-on-topic
getAreaRelated:
tier: free
mcpTool: find_related
agentSkill: brief-on-topic
getPaperRelated:
tier: free
mcpTool: find_related
agentSkill: research-with-api-evangelist
getGuidanceRelated:
tier: free
mcpTool: find_related
agentSkill: brief-on-topic