io.github.oasdiff/oasdiff

oasdiff

Detect breaking changes, generate changelogs, diff, and validate OpenAPI specs.

Endpointhttps://api.oasdiff.com/mcp (streamable-http)
Registry version1.0.0
Now4 tools · grade C (75) · pin ts_f8da00f4a6bda261399e5be2165bff00 · protocol 2025-06-18
First / last listed2026-10-31 01:03 UTC / 2026-10-31 01:03 UTC
Grade over time2026-10-31: C (75), 4 tools

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Timeline

First listing · 2026-10-31 01:03 UTC
4 tools, grade C (75)

Tools: oasdiff_breaking_changes oasdiff_changelog oasdiff_diff oasdiff_validate

Current tools (4)

oasdiff_breaking_changesDetect breaking API changes between two OpenAPI specifications. Pass the base (old) and revision (new) specs as YAML or JSON; returns the breaking and warning-level changes. Use this when the question is whether an API change breaks existing clients. Use oasdiff_changelog instead to list every change including non-breaking and informational ones, oasdiff_diff for the raw added/removed/modified str
params: base*, revision*
oasdiff_changelogProduce a full changelog of every detected change between two OpenAPI specifications (base vs revision), down to informational changes. Pass both specs as YAML or JSON. Use this when you want the complete set of changes at every severity. Use oasdiff_breaking_changes instead when you only care whether the change is breaking (less noise), or oasdiff_diff for the raw structural diff without a backwa
params: base*, revision*
oasdiff_diffShow the structural diff between two OpenAPI specifications (base vs revision): what was added, removed, or modified. Pass both specs as YAML or JSON. Use this when you want the raw structural changes rather than a backward-compatibility verdict. Use oasdiff_breaking_changes to judge whether changes break clients, or oasdiff_changelog for a severity-classified changelog. Both specs must be valid,
params: base*, revision*
oasdiff_validateValidate a single OpenAPI specification against the OpenAPI and JSON Schema rules. Pass the spec as YAML or JSON; returns the findings (empty when the spec is valid). Use this when you have one spec and want to check it is well-formed. For comparing two specs, use oasdiff_breaking_changes, oasdiff_changelog, or oasdiff_diff instead. The spec must be self-contained (external $ref URLs or files are
params: spec*

Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.