Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Deterministic claim verification with receipts across ~60 domains. No model in the loop.
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Works in Claude on the web, desktop and mobile:
https://narrowhighway.com/mcpRun this in your terminal
claude mcp add --transport http concordance https://narrowhighway.com/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"concordance": {
"url": "https://narrowhighway.com/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"concordance": {
"type": "http",
"url": "https://narrowhighway.com/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://narrowhighway.com/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
The publisher (narrowhighway.com) is not the repo owner (matharrismma); someone else may have listed it
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (2.0.0) reached the registry 4 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, Agent Data Tools: Utilities
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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A deterministic verification engine. It checks what is true and hands you a receipt you can re-verify — a verdict, the worked reasoning, and a permanent content-addressed seal. It eliminates what is not the answer so that what survives stands on its own.
Rebuilt like a watch (the watchmaker's discipline): one bounded, counted movement; serviceable by
any competent hand; machine-honest — the accuracy *is* the finish. See
docs/V2_DEFINITION.md.
New here? Start with
docs/ARCHITECTURE.md— the newcomer's map (every count dated and derived from the code).
Every answer is a (verdict, trail, seal) — three things, each independently checkable.
{domain, spec} (or text the router resolves)spec → verdict + worked trail (no I/O, no LLM)PASS | REJECT | QUARANTINE + the worked math (the elimination trail){claim, verdict, trail}secular reach / witness)The measure: reproducibility, zero false-positives on the published benchmark (docs/BENCHMARK.md), re-checkability.
The foundation is the Bible (FOUNDATION.md) — Christ at the center. From it the engine reaches the world two ways: a secular .com (the reach) and an explicit-witness .org. One engine, one foundation, selected by config — never a fork.
from concordance import EngineConfig
EngineConfig("secular").identity # the reach — no religious wording EngineConfig("witness").identity # the witness — the foundation named
PYTHONPATH=src python -m concordance serve # the .com reach (secular) — API + site, same-origin
PYTHONPATH=src python -m concordance serve --surface witness # the .org witness face
Then open `http://127.0.0.1:8000/` — bring a claim, get a receipt. (Data — the keeping, the WEB
Bible, Strong's — is generated by tools/migrate_*.py and gitignored; the engine runs without it, just with less to retrieve.)
/) — speak or type anything; the keeping answers, shown as a calm trail (door → verifier → seal → source), read as a page or heard aloud in the operator's own cloned voice. Crisis-first, store-nothing./parable.html, and the WALK door) — bring a situation; receive the one of Christ's parables whose *shape* fits it — the story verbatim, with his own explanation where he gave one, and one next step. Found and cited, never generated; honest silence where no single parable fits./books.html) — a free library: read our books in full, or open your own .epub, which is read entirely in your browser and never uploaded (store-nothing).The engine is also an MCP server (python -m concordance mcp). Five doors, every answer found/verified/cited/sealed, never generated:
verify · audit · seal_fetch · find_verifier: a claim in; the verdict, the worked trail, the seal.search · card_get · lookup · define: one map, one lookup, the source itself.ask · discern · parable · coach_next: a situation in, one next step out — the path, the fitting parable, the figures' words.identity_create · study_create · decks: a sovereign key born on your device; your deck, your receipts.read_passage · word_study · cross_references: Scripture at depth.The 2.0 engine is built end to end and live (narrowhighway.com/.org/.tv) — floor 7/7, the derivation moat (0 false-positives), the tamper-evident ledger + precedent overlay, 93 verifier modules across 77 routable domains, the witness overlay (theology / witness / scripture / canon), the shared corpus
Console + the parable register + the Reading Room, an MCP server (100+ tools), a sovereign HTTP API, and the site. 400 test files; the deploy gate (benchmarks, live assay, front door, recall) runs on every push with zero false positives and reverts on any regression. The domain router is model-free and measured (orthogonalized basis; routing cross-talk and invariance tracked by tools/dispatch_probe.py and tools/hodge_probe.py). A gated collective-intelligence layer (stigmergy, quorum, flock, eldership, physiology, inhibition) and an alignment gate (the keeping tiered by agreement — occult explicit-only, other religions/philosophy referenceable) run over it; see docs/WORLD.md. Sovereign, stdlib-first; heavy deps (sympy/scipy/numpy) are optional, lazy-loaded.
1.0 is frozen (v1.0-frozen in the Lighthouse repo) — the shape that taught us the floor.