Can My Agent Uselookup · compare · cite

Aug 28, 2026 · Catalog foundation is up

Specification feature · interfaces

MCP server instructionsMCP 2026-07-28

Consume server-provided instructions during initialization.

Terminology basis: MCP 2026-07-28. MCP 2026-07-28

MCP server instructions: 0 supported, 1 partial, 0 unsupported, 30 unreviewed across 31 cataloged products.

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Explore this familyMore in Model Context Protocol23 capabilities

Current evidence by product

Can my agent use MCP server instructions?

Read across for the answer. 1 of 31 current product columns have reviewed evidence; unreviewed does not mean unsupported.

Known issues (0)Report an issue
  • Supported0
  • Partial1
  • Unsupported0
  • Unknown30
  • Not applicable0

Web

9 products

Desktop

13 products

CLI

9 products

Unknown means no public evidence has been reviewed for that product and capability. It does not mean unsupported.

How statuses are assigned

Definition and scope

What this capability means

Consume server-provided instructions during initialization.

This row remains unknown for a product until exact, dated evidence covers this capability rather than MCP generally.

Traceable compatibility

Assertion ledger

Documentation evidence only. No runtime conformance test is implied.

Claude CLIcli · current
Partial
Target
current Claude Code MCP documentation · dated-documentation
Environment
local-default
Observed
2026-08-28
  • runtimethe server instructions field is documented as input to Tool Search, but the documentation does not specify full initialization-time display, precedence, or conflict behavior
Evidence
  1. 1. Evidence checked 2026-08-28: Claude Code's MCP guide explicitly describes the server `instructions` field as useful context for deferred MCP tool discovery; the reviewed page does not define how every instruction is surfaced or prioritized.