Market around Schema Mutation

Open-source benchmark measuring whether language models use current tool schemas after fields, enums, required parameters, endpoints, or types change. Includes 60 deterministic tasks and exact-match JSON tool-call grading.

Visit github.com ↗Pricing page ↗

Explore the market

Prices and medians update for the tier you select. Caution: thin market — treat statistics as indicative.

Compare at

Schema Mutation · Pro

No Pro plan

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Pro-provider median

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insufficient comparable pricing

vs Pro providers

No comparison

Schema Mutation doesn't sell Pro

ⓘ Comparisons are same provider type (provider) and same buyer tier (Pro). Never across tiers.

Market density

0th pctile

0 competing vendors

Comparable listings · 30d

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Price spectrum · Pro plans · 2 of 2 providers priced · log scale · $39 → $49/mo

MCP servers◻ shaded = middle 50% · line = median (all types)Schema Mutation has no comparable Pro price — not plotted

Products in this market

Ranked by how closely each one matches Schema Mutation's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.

OOther3Ranked by similarity

Schema Mutationthis listing

● OTHER

no public price

Benchmark Instruction Hierarchy

MMCP servers1Ranked by similarity

Jsonmend

● MCP62% similar

no public price

Thin market — few comparable priced products; treat statistics as indicative.