ADR 0188: a module's own code is bundles in any language, and a tools bundle speaks MCP to the runtime; design 38 gains WP1b #300

Merged

mesh-admin merged 3 commits from decision/0187-a-modules-own-code-is-bundles-in-any-language into main

2026-10-02 19:27:40 +00:00

Author	SHA1	Message	Date
jschoubben	da8b4b4ee4	Renumber to ADR 0188: 0187 landed on main first, as the dead-tracker record Two records shared 0187 (issue 155's collision); the branch landing last renumbers, and this is it. Only the number changes.	2026-10-02 21:01:02 +02:00
jschoubben	c026d5221e	Merge remote-tracking branch 'origin/main' into renumber-0187	2026-10-02 21:00:45 +02:00
jochen	709240ec1f	ADR 0187: a module's own code is bundles in any language, and a tools bundle speaks MCP to the runtime; design 38 gains WP1b The operator's direction, absent from every record until now: the SDK must not limit who writes a module; tools and services may be written in any language; one module may ship several bundles (tools, a seat's implementation, a daemon); skeleton first, a full implementation when the work requires it. ADR 0175 had the runtime import a bundle, which only JavaScript can be. 0187 makes a tools bundle a process the node's runtime launches and speaks MCP over stdio to — the vocabulary the runtime already speaks outward — so any language with an MCP library can write one today and the mesh's SDK per language is thin; the transport stays in the runtime (0039's refusal, kept). Importing a TypeScript bundle is the shortcut, not the contract. Notes in 0175, 0039 and 0150 say where their mechanism moved; design 38 records WP1 as built and adds WP1b (the launcher and the skeleton SDKs); the glossary's bundle widens.	2026-10-02 18:56:57 +02:00

Author

SHA1

Message

Date

jschoubben

da8b4b4ee4

Renumber to ADR 0188: 0187 landed on main first, as the dead-tracker record

Two records shared 0187 (issue 155's collision); the branch landing last
renumbers, and this is it. Only the number changes.

2026-10-02 21:01:02 +02:00

jschoubben

c026d5221e

Merge remote-tracking branch 'origin/main' into renumber-0187

2026-10-02 21:00:45 +02:00

jochen

709240ec1f

ADR 0187: a module's own code is bundles in any language, and a tools bundle speaks MCP to the runtime; design 38 gains WP1b

The operator's direction, absent from every record until now: the SDK must not limit who writes a
module; tools and services may be written in any language; one module may ship several bundles
(tools, a seat's implementation, a daemon); skeleton first, a full implementation when the work
requires it. ADR 0175 had the runtime import a bundle, which only JavaScript can be.

0187 makes a tools bundle a process the node's runtime launches and speaks MCP over stdio to —
the vocabulary the runtime already speaks outward — so any language with an MCP library can write
one today and the mesh's SDK per language is thin; the transport stays in the runtime (0039's
refusal, kept). Importing a TypeScript bundle is the shortcut, not the contract. Notes in 0175,
0039 and 0150 say where their mechanism moved; design 38 records WP1 as built and adds WP1b (the
launcher and the skeleton SDKs); the glossary's bundle widens.

2026-10-02 18:56:57 +02:00