Swagger and SwaggerHub Alternative, Spec From Code · Evlio

Compare
/
Evlio vs Swagger
A Swagger and SwaggerHub alternative
Swagger
describes
your
API.
Evlio runs it.
A spec and a viewer are where API management starts, not where it ends. Evlio writes the spec from your code, scores it, enforces one contract per audience, and hosts the gateway your agents call. Import your existing OpenAPI files; nothing is rewritten by hand.
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Written by the Evlio team. Postman, Swagger and SwaggerHub are trademarks of their respective owners. Evlio is not affiliated with or endorsed by them.
Swagger
SPEC AND TOOLING
The format most of the industry writes APIs in, plus an editor, a viewer, and code generators. It renders the spec you hand it faithfully, and has no opinion on whether that spec still matches production.
Starts from a spec you maintain
Free open source, per seat on SwaggerHub
Style rules, not runtime enforcement
Evlio
API MANAGEMENT
A system of record that reads your repo, writes the specs, scores every endpoint, and enforces one contract per audience at runtime. Collections are an output, not the input.
Starts from the code, rescanned every commit
Flat pricing, unlimited members and endpoints
Governance blocks the publish
Four real differences
The gaps that matter once agents show up
01
Someone has to write the spec. Evlio does
OpenAPI is an excellent format for describing an API. It has nothing to say about who keeps the description true.
SWAGGER
The spec is an artifact you own and maintain. When the code moves and the file does not, the viewer confidently shows the wrong thing.
EVLIO
Evlio reads routes, handlers, and types from the repo, writes OpenAPI 3.1 itself, and rescans on every commit. The document cannot fall behind the code.
02
A grade and a fix, not a rendered document
A spec can be valid, lint-clean, and still unusable by an agent: no descriptions, loose types, undocumented auth.
SWAGGER
Style rules and validation catch structural problems. Whether an endpoint is genuinely ready for a partner or an agent is a judgment call.
EVLIO
Every endpoint is graded on design, developer experience, AI readiness, security, and performance, with a concrete fix attached and an AI that can apply it.
03
Governance that can say no
A diff between two spec versions tells you what changed. It does not tell you whose build breaks, or stop it from shipping.
SWAGGER
Validation and version history exist, and CI can fail a lint. Consumer impact and approval are up to your own process.
EVLIO
Contracts define what each audience sees per field. Breaking changes block the publish until approved, and the gateway enforces the same rules at runtime.
04
From a document to a running gateway
Agents do not read documentation. They call tools, retry badly, and act on whatever schema you hand them.
SWAGGER
A spec can describe an API. It cannot authenticate a call, hide a field, throttle a retry storm, or tell you which agent did what.
EVLIO
Hosted MCP servers with OAuth2, per-tool scopes, field redaction, rate limits, and a full log of which agent called which tool, in one place.
Side by side, capability by capability
CAPABILITY
Swagger
Evlio
DISCOVER
Generate specs from source code
Partial
✓
Rescan on every commit
No
✓
Finds undocumented endpoints
No
✓
Import OpenAPI and collections
✓
✓
OpenAPI editor
Swagger Editor, open source, local or hosted by SmartBear
Free editor at app.evlio.xyz/editor, plus specs generated from code
Consumption tracing per endpoint
No
✓
Unused endpoint detection
No
✓
UNDERSTAND
Endpoint-level quality scoring
Style rules
✓
AI readiness score
No
✓
AI fixes applied to the spec
No
✓
Score history and trends
No
✓
Manual request testing
Try it out
✓
Automated test generation
No
✓
Chaos suites for agent behavior
No
✓
GOVERN
Auto changelog from code
No
✓
Contracts per audience
No
✓
Field-level exposure control
No
✓
Block-publish on breaking change
Partial
✓
Approval workflows
Partial
✓
Runtime enforcement of the contract
No
✓
PUBLISH
Docs site
✓
✓
Collection export
Partial
✓
Client SDK generation
✓
✓
MCP server generation
No
✓
Hosted MCP with auth gateway
No
✓
Per-tool scopes and rate limits
No
✓
Per-agent and per-key call logs
No
✓
Swagger
DISCOVER
Generate specs from source code
Partial
Rescan on every commit
No
Finds undocumented endpoints
No
Import OpenAPI and collections
✓
OpenAPI editor
Swagger Editor, open source, local or hosted by SmartBear
Consumption tracing per endpoint
No
Unused endpoint detection
No
UNDERSTAND
Endpoint-level quality scoring
Style rules
AI readiness score
No
AI fixes applied to the spec
No
Score history and trends
No
Manual request testing
Try it out
Automated test generation
No
Chaos suites for agent behavior
No
GOVERN
Auto changelog from code
No
Contracts per audience
No
Field-level exposure control
No
Block-publish on breaking change
Partial
Approval workflows
Partial
Runtime enforcement of the contract
No
PUBLISH
Docs site
✓
Collection export
Partial
Client SDK generation
✓
MCP server generation
No
Hosted MCP with auth gateway
No
Per-tool scopes and rate limits
No
Per-agent and per-key call logs
No
Evlio
DISCOVER
Generate specs from source code
✓
Rescan on every commit
✓
Finds undocumented endpoints
✓
Import OpenAPI and collections
✓
OpenAPI editor
Free editor at app.evlio.xyz/editor, plus specs generated from code
Consumption tracing per endpoint
✓
Unused endpoint detection
✓
UNDERSTAND
Endpoint-level quality scoring
✓
AI readiness score
✓
AI fixes applied to the spec
✓
Score history and trends
✓
Manual request testing
✓
Automated test generation
✓
Chaos suites for agent behavior
✓
GOVERN
Auto changelog from code
✓
Contracts per audience
✓
Field-level exposure control
✓
Block-publish on breaking change
✓
Approval workflows
✓
Runtime enforcement of the contract
✓
PUBLISH
Docs site
✓
Collection export
✓
Client SDK generation
✓
MCP server generation
✓
Hosted MCP with auth gateway
✓
Per-tool scopes and rate limits
✓
Per-agent and per-key call logs
✓
Capability rows compiled from public product documentation in July 2026. The OpenAPI toolchain moves fast, so check the current docs. If something here is out of date, tell us and we will fix it.
What it costs, product by product
COMMERCIALS
Swagger (open source)
SwaggerHub
Evlio
PRICING AND PLANS
Pricing model
Free, open source
Per user: from $19 Individual, $29 Team, $49 Enterprise a month
$0 Free · $100/mo Startup · $600/mo Business, flat
Members included
Runs on your machine
Each user is a paid seat
Unlimited on every plan
Free tier
The tools are free
Free trial, no free plan
1 repo, 1 hosted MCP server, 1,000 tool calls/mo
API or design limits
None
10 APIs Individual, 50 Team, unlimited Enterprise
Unlimited endpoints
Hosting
You host it
SaaS, or on-premise on request
Hosted; private cloud or on-prem on Enterprise
Team collaboration
No
Team plan and above
Every plan
SSO / SAML
No
Add-on at $5 per user/month, Team and above
Enterprise
Swagger (open source)
PRICING AND PLANS
Pricing model
Free, open source
Members included
Runs on your machine
Free tier
The tools are free
API or design limits
None
Hosting
You host it
Team collaboration
No
SSO / SAML
No
SwaggerHub
PRICING AND PLANS
Pricing model
Per user: from $19 Individual, $29 Team, $49 Enterprise a month
Members included
Each user is a paid seat
Free tier
Free trial, no free plan
API or design limits
10 APIs Individual, 50 Team, unlimited Enterprise
Hosting
SaaS, or on-premise on request
Team collaboration
Team plan and above
SSO / SAML
Add-on at $5 per user/month, Team and above
Evlio
PRICING AND PLANS
Pricing model
$0 Free · $100/mo Startup · $600/mo Business, flat
Members included
Unlimited on every plan
Free tier
1 repo, 1 hosted MCP server, 1,000 tool calls/mo
API or design limits
Unlimited endpoints
Hosting
Hosted; private cloud or on-prem on Enterprise
Team collaboration
Every plan
SSO / SAML
Enterprise
Swagger
plans and prices checked
October 20, 2026
on
swagger.io/product/pricing
. Evlio prices from
our pricing page
.
Switching
Switching from SwaggerHub
Bring the specs you already have and keep the toolchain your consumers rely on. Evlio emits standard OpenAPI 3.1, so Swagger UI and your codegen keep working exactly as they do today.
01
Import
Upload your OpenAPI 2.0 or 3.x files, or connect the repo and let Evlio regenerate them from code. Expect the repo to surface endpoints no spec ever mentioned.
02
Docs
Specs publish to documentation hosted by Evlio, the API documentation platform Evlio is built on.
About Evlio →
03
Team
Every member is free on every plan. There is no per-user seat to migrate, and no one to leave out.
WHEN SWAGGER IS ENOUGH
You need a readable reference for an API whose spec is already accurate, and a viewer your consumers can open. Swagger UI is the industry default for a reason, and Evlio emits the same OpenAPI you would put in it.
WHEN YOU NEED EVLIO
Nobody can list every endpoint you own. A partner or an agent depends on your response shape. Someone asks which agent called what, and the honest answer is that you do not know. That is the day a client stops being enough.
FAQ
Do I need an OpenAPI spec to use Evlio?
No. Evlio writes the spec from your code and rescans on every commit, so the spec is an output that cannot drift instead of an input someone must maintain.
Does Evlio work with the OpenAPI files I already have?
Yes. Existing specs import into the catalog, and from then on they are checked against the code, with drift flagged the moment the two disagree.
What does Evlio add beyond Swagger UI?
Endpoint scoring, one enforced contract per audience with breaking-change gates, generated tests, and hosted MCP servers behind an auth gateway. A spec and a viewer are where that pipeline starts, not where it ends.
From top startups to Fortune 500 companies, trusting Evlio
SOC 2 Type II
·
certified
ISO 27001 / 27701
·
certified
GDPR
·
compliant
Encryption
·
TLS 1.3 / AES-256
SSO / SAML and SCIM
·
available
Full security posture →
Point Evlio at one repo and see what is missing
Free forever on your first repo. Import your existing specs in the same minute.
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