Engineering articles and guides | Evlio blog · Evlio

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Engineering
articles and guides
Engineering notes from building Evlio: how a repo becomes a catalog, how agents call APIs, and what the numbers said. How static analysis reads route handlers and validators, how agent-readiness is scored, and where MCP and REST genuinely differ, written from the code.
4
posts
, newest first · Updated
2026-09-01
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OpenAPI
Aug 27, 2026
How to generate an OpenAPI spec from existing code
Four working ways to get an OpenAPI 3.1 spec out of a codebase that never had one, what each approach misses, and how to keep the result true.
4
min read
MCP
Aug 27, 2026
MCP vs REST: what changes when agents call your API
MCP does not replace REST. It changes who the caller is. What that shift means for interface design, auth, error messages, and operations.
4
min read
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Engineering
Jul 2, 2026
How Evlio reads a repo: from route handlers to OpenAPI 3.1
Static analysis, framework fingerprints, and the messy middle where code and spec disagree.
11
min read
Engineering
Jun 5, 2026
Scoring agent readiness: what the A–E grade actually measures
Description coverage, schema completeness, auth clarity, and the weights behind the grade.
9
min read
ALL TOPICS
MCP
9
Governance
7
AI Agents
6
OpenAPI
6
Observability
5
Contracts
4
Engineering
4
Product
3
Infrastructure
2
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