What tools does the witness-2 MCP server provide?

witness-2 exposes 1 tools: contract_witness. This list was returned by the running server when we connected to it.

Does witness-2 require an API key?

No. witness-2 answered a tools/list request without credentials.

Connection check verified live · 27h ago

witness-2

Production proofs for breaking JSON Schema/MCP changes; UNKNOWN/NO_WITNESS_FOUND not compatible.

Databases & SQL Cloud & infrastructure

Tools 1

GitHub stars —

Installs / wk —

Licence —

Transport streamable-http

Last checked 27h ago

Tools & capabilities

1 tool

Read from the running server on 27h ago.

contract_witness mode*optionsnew_schema*old_schema*

Produce a concrete independently revalidated JSON-Schema/MCP backward-compatibility witness before merge/deploy. UNKNOWN or NO_WITNESS_FOUND never means compatible.

Context cost

Light

Connecting this server adds 1 tool definitions to every request — roughly 90 tokens before you ask anything.

Adds little to your context. Safe to keep connected.

Estimated at ~90 tokens per tool. Actual size varies with schema complexity — treat this as an order of magnitude, not a measurement.

Similar servers

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both mention “found” · 2 tools

mcp-assert local install

both mention “found”

found-by-ai-monitor verified live · 27h ago

both mention “found” · 17 tools

shawnhvac-mcp verified live · 28h ago

both mention “unknown” · 7 tools

refund-decide verified live · 27h ago

both mention “unknown” · 1 tools

dominion-observatory verified live · 26h ago

both mention “unknown” · 15 tools

Ranked by shared tools where both expose an inventory, otherwise by shared wording.

Source & links

Registry: io.github.tfitzgerwitness/witness
Endpoint: https://witness-contractwitness-production.witness-test.workers.dev/mcp
Sources: registry