Deterministic claim verification with receipts across ~60 domains. No model in the loop.
Connect Remote server
claude mcp add --transport http concordance https://narrowhighway.com/mcp{
"mcpServers": {
"concordance": {
"url": "https://narrowhighway.com/mcp"
}
}
}{
"servers": {
"concordance": {
"type": "http",
"url": "https://narrowhighway.com/mcp"
}
}
}Settings > Connectors > Add custom connector
URL: https://narrowhighway.com/mcpTools 80 found in our last check
verify[CHECK · door] Verify a claim deterministically — returns a verdict (HOLDS / PARTIAL / BROKEN / INCOMPLETE / SYSTEM_ERROR), the worked trail, AND a sealed receipt {content_hash, cite_url} you can re-fetch and re-verify (seal_fetch). Three forms: (a) PLAIN — {claim}: a plain-lang…
audit[CHECK · door] Audit a whole text: deterministic extractors find every checkable quantitative claim (sums, percentages, hourly/annual pay, compound interest, rule-of-72, elapsed years, day-of-week, leap years, nutrition labels), the engine verifies the lot, and ONE sealed covera…
seal_fetch[CHECK · door] Fetch a sealed verification record (the receipt) by its content hash.
find_verifier[CHECK · door] Which verify DOMAIN handles a plain-language claim — the deterministic resolver (no model). Returns ranked domain candidates with the literal words that matched, to confirm and pass to `verify`. Crisis defers to real help; genuine ambiguity returns the candidates,…
attest_record[CHECK · internal] Bind your identity to a record you already hold — phase 2 of the sovereign flow. Do the thing unsigned (badges_issue, study_export, group_contribute), take the returned content_hash, sign THAT hash with your own key on your own machine, and submit only the att…
candidate_commit[CHECK · internal] Candidate Engine step 1 — commit a COMPLETE raw candidate set BEFORE any evaluation. Give the query, the generator, the method, and EVERY raw candidate; weights ride verbatim as UNTRUSTED metadata (proposal_weight is never confidence and never ranks anything).…
candidate_get[CHECK · internal] Fetch a sealed candidate record (a narrowing receipt or a commitment anchor) by its content hash — the whole preserved path, losers included, re-checkable offline with tools/verify_seal.py. The seal proves process integrity, never truth.
candidate_narrow[CHECK · internal] Candidate Engine step 2 — narrow a COMMITTED set: verifiers are assigned under the fixed pre-registered routing policy (never your choice — that is what stops verification shopping), each routed claim runs through the deterministic moat, unroutable claims stay…
kernel[CHECK · internal] THE GATE KERNEL — the law you keep here, in one call. The five moves (find, distinguish the KIND, verify what can be verified, preserve the trail, never silently upgrade authority), the eight-rule agent covenant, the six object KINDS, the authority lattice (qu…
kernel_gate[CHECK · internal] Route ONE proposed state-change through the kernel and get back the verdict (REJECT / QUARANTINE / CONFIRMED) plus the nine-field record — so you can DISCERN before you write (covenant rule 8: stop when the evidence is incomplete). CONFIRMED needs a real verif…
manufacture[CHECK · internal] The Conductor's shop-domain calc door: route an engineering claim + its numbers through the engine's manufacturing verifier -> seal -> hash-chained ledger, and report the disposition (CALCULATED/CONTROLLED/PROVISIONAL/OPEN). The engine verifies the calc; the e…
profession[CHECK · internal] Read a sealed profession of faith and who has borne witness to it (each signature re-verified as read), with the lineage it joins — up to Polycarp, the initial trajectory, and Christ at the head. Omit the hash to see the Polycarp root itself.
redact[CHECK · internal] Strip PII (emails, SSNs, credit cards, IPs, URLs) from text to stable placeholders before you pass it onward; the mapping is returned so YOU reveal replies locally. For true privacy run this on a LOCAL/sovereign engine (the text never leaves your machine) or u…
report[CHECK · internal] Report a community item (group_contribution, mesh_message, door_note) to the moderation floor. One report is a claim, never a verdict; at three DISTINCT reporters the item is held for a HUMAN steward's review (Deut 19:15). The counter never judges — it decides…
resolve[CHECK · internal] Resolve a Scripture reference to its World English Bible text.
self_attest[CHECK · internal] Record a person's OWN words about their study — a DISTINCTLY TYPED record that can NEVER count as a sealed check or satisfy an auto-graded requirement.
witness_profession[CHECK · internal] Bear witness to someone's sealed profession of faith — sign its content_hash on your own machine (signing.sign_seal) and submit only the attestation. One signature is a claim; two or three witnesses begin to establish a matter (Deuteronomy 19:15). Refuses any…
witnesses[CHECK · internal] Who has borne witness to a record, each signature re-verified as it is read (storage is never trusted). Reports invalid entries rather than hiding them.
search[FIND · door] Ranked search over the keeping (the kept library).
card_get[FIND · door] Fetch one card (the full record) from the keeping by id.
lookup[FIND · door] Look up a VALUE deterministically from the engine's offline, public-domain data — the found-value twin of `verify` (look it up, then verify it), consolidated like verify into one tool. kind is one of: molar_mass {formula}, element {symbol|name|atomic_number}, conve…
define[FIND · door] The dictionary — what an English word MEANS. Webster's 1913 (public domain) plus our gathered supplement for terms it predates; each sense labeled with its source. Empty when the word is unknown or no dictionary is loaded. The peer of thesaurus (synonyms) and word_…
card_connections[FIND · internal] Cards related to one card — its explicit links + same-shelf siblings.
cards_browse[FIND · internal] Browse the keeping — paginated, optional shelf filter. Returns card briefs.
cards_stats[FIND · internal] Counts over the keeping — total, by shelf, by surface.
daily_card[FIND · internal] The deterministic card of the day from the keeping (same all day).
grid_axis[FIND · internal] The map: a read-only view of one axis (its scaffold members, depth, neighbors, umbrella children). Omit `axis` for an overview of all axes.
grid_dimension[FIND · internal] The axes that sit on a given scaffold member (dimension).
locate[FIND · internal] Find the card for a query — by exact id, then title, else ranked search.
pronounce[FIND · internal] A synthesized pronunciation guide (respelling + approximate IPA) for a transliteration or word — honestly labeled, not a native speaker.
thesaurus[FIND · internal] The thesaurus — WordNet synonyms and broader (IS-A) terms for a word; the words that stand with it. Empty when the word is unknown or no thesaurus is loaded. The agent twin of the GET /thesaurus page.
capabilities[FIND · plumbing] The live capability statement: what this engine can verify, what tools and endpoints exist, how large the keeping is, and where its boundaries are. Every count is computed at call time and carries a 'means' line defining exactly what was counted — never a hand-…
library_health[FIND · plumbing] Corpus health — is the keeping loaded and sound (totals, shelves, surfaces).
now[FIND · plumbing] The actual current date and time, fresh at this call — UTC (the clock every seal is stamped in), the library's home zone, and optionally any IANA zone you name. Your own sense of 'today' is months old; this is the correction. Never cached; unresolvable zones ar…
steward_budget[FIND · plumbing] Steward — a household budget (income, expenses -> net, savings rate, by category). Shows and plans; NEVER moves money.
steward_cost_destroyed[FIND · plumbing] Steward — cost destroyed: money you did NOT spend (was -> now), kept in your currency.
ask[WALK · door] Bring anything — a question, a claim to check, a word to study, or what is actually on your mind. The engine discerns what KIND of thing you brought and answers in kind: it finds and verifies, and declines rather than guessing. This is also the door: if what you as…
discern[WALK · door] Discern what to do with anything WITHOUT doing it — the proposal half of the engine, laid open. Bring a claim, a question, or a messy statement; get back what KIND it is, the necessary claim reduced to only what could change a verdict (private and framing context h…
coach_next[WALK · door] Coach — the next lesson in a subject, deterministically. Omit `after` for the first unit; pass a unit id for the one that follows it. `subject` selects the path.
coach_guidance[WALK · internal] Coach — what it does and the boundary it will not cross (never grades a child).
coach_mastery[WALK · internal] Coach — seal an HONEST INTEGER count of completed units (a receipt for progress, never a grade on the child). Returns a re-checkable seal.
coach_overview[WALK · internal] Coach (K-3 tutor) — one subject's whole path: unit count, tracks, ordered unit briefs. ?subject= selects the path (default 'read'). Verbatim; never generated.
coach_recommend[WALK · internal] Coach — adaptive 'what's next' in a subject: given completed unit ids, the next lesson whose prerequisites are met (grows with the student). Found, never generated.
coach_subjects[WALK · internal] Coach — the subjects a learner can study (read / mcguffey / aesop / founding / pilgrims / es / …), each with its unit count. 'read' is the door in.
coach_unit[WALK · internal] Coach — one unit, VERBATIM as authored (rule, examples, decodable sentence, checks).
parable[WALK · internal] Bring a situation in your own words; receive the ONE of Christ's parables whose SHAPE fits it — the story verbatim (the Prodigal Son, the Good Samaritan, the Talents, the Sower, Luke 15 / Matthew 13 / Matthew 25 ...), his OWN explanation where he gave one, and…
playbook_read[WALK · internal] THE PLAYBOOK — the Body's testimony of faithful obedience: 'Canon commands, Playbook remembers.' List entries (optionally by `status` quarantine/confirmed/rejected/pruned or `author`), or one by `id`. Confirmed testimony is affirmed BY THE BODY — it is NOT Scri…
identity_create[KEEP · door] Explains how to create a SOVEREIGN identity — keys are born on the USER'S device (never on the server; no private key crosses the wire). Returns guidance, not a key. The server only handles public keys (identity_verify, identity_fingerprint).
study_create[KEEP · door] Create/extend a shared study (superposition stack) — each entry mints ONE card that lives once and is referenced by key; no duplication.
decks[KEEP · door] The decks — curated card SETS, both by-situation (need decks, frontloaded for a moment of need like 'when the power goes out') and by-domain. Each with a live card count; `need: true` marks a situation deck.
badges_issue[KEEP · internal] Issue a badge over already-sealed checks — a re-checkable receipt that points at N seals that STILL STAND. States EXACTLY N; NEVER a competency claim.
badges_verify[KEEP · internal] Re-check a badge from the store — re-verifies every seal it references and returns the count that still stands (N recomputed, not trusted).
calendar_create[KEEP · internal] Create ONE event in a human's calendar — the pilot on-behalf write, and the only one. Requires a LIVE consent grant: the human signed a scoped, expiring calendar_write grant for YOUR key fingerprint on their own device (GET /consent/signable → sign locally → PO…
commons_read[KEEP · internal] What the fellowship has put on the commons — promoted member work, newest first. Every card is a member's own work at the `member` tier: the library amplified it; the library did not verify it.
consent_check[KEEP · internal] Check whether a human has authorized YOU (this agent's key fingerprint) for a named verb — the agent covenant's 'request human authorization before writes'. Speaking as YOURSELF (your own key, your own words) needs no consent: a member is not a proxy. Consent g…
curate[KEEP · internal] A recorded act on one drop: `promoted` · `refused` · `withdrawn`. A name AND a reason are always required — no anonymous judgement, and a refusal without a reason teaches the community nothing. WHO MAY ACT: promoting or refusing needs the steward `token` (these…
curate_queue[KEEP · internal] What waits on a HUMAN steward. The counter never promotes; it only decides when a person must look.
curate_signable[KEEP · internal] The canonical bytes for withdrawing YOUR OWN card. A member never needs permission to take their own words down — the proof is the same key that signed the drop. Sign these bytes, then call `curate` with them.
deck_open[KEEP · internal] Open a deck to its frontloaded hand — the cards that situation calls for, in order, with NO query needed. Give the deck `id` (from `decks`). Ideal for anticipating need: open 'water-safe', 'first-aid-far', 'grow-food', 'be-not-afraid', etc., and get the hand re…
group_contribute[KEEP · internal] Add a verse/note/question to a group's shared study — attributed to your handle, optionally signed. Verbatim; a member's own words, not engine-verified.
group_create[KEEP · internal] Open a study group around a topic (pseudonymous; a handle, no personal info). For grown believers — the children's coach is a separate, never-joined surface.
group_get[KEEP · internal] A study group: topic, member handles (no ids/PII), and the shared-study cards.
group_join[KEEP · internal] Join a study group (consent-based, pseudonymous; idempotent).
groups_list[KEEP · internal] Discover pseudonymous shared-study groups by TOPIC (not by person). Optional q filters over topic/title/description. Members are handles only — no PII.
identity_fingerprint[KEEP · internal] Derive the stable public fingerprint id from a public key (deterministic).
identity_verify[KEEP · internal] Verify a signature over a message against a public key (never raises; True/False).
mesh_door[KEEP · internal] Read the words left on YOUR door — the whiteboard others wrote to you, each with its verification. Yours alone: prove your key — pass `at` (unix seconds) and `sig` over nh-mesh-read:v1:<fp>:<at>, signed with your key.
mesh_inbox[KEEP · internal] The messages that reached you, each carrying its own offline verification so you trust it by proof rather than by this server's word. Yours alone: prove your key — pass `at` (unix seconds) and `sig`, a signature over nh-mesh-read:v1:<fp>:<at> made with your key…
mesh_leave_on_door[KEEP · internal] Leave a word on one believer's door — directed encouragement rather than a post to everyone near you. Same sovereign shape: get the bytes from mesh_signable (with target), sign locally, send only the signature. Will not accept a private key; unsigned notes are…
mesh_map[KEEP · internal] The believers immediately around you in the Fellowship Mesh — your view only, never a global map. Requires your fingerprint (fp) and a confession already bound to that key; unconfessed callers get the path to the door, not the network.
mesh_post[KEEP · internal] Step 2: speak to the nodes around you, carrying only your SIGNATURE — your private key never leaves your machine and this tool will not take one. Pass the same text/kind/ttl plus the nonce, created_at and signature from mesh_signable. Refused unless the signatu…
mesh_signable[KEEP · internal] Step 1 of speaking to your fellowship: get the exact canonical bytes to sign for a message (returned base64url, with the nonce and created_at to send back). Sign them locally with your own key. Reproducible offline — sorted-key JSON — so you can compute and che…
moderation_signable[KEEP · internal] Step 1 of a report or a block: the exact canonical bytes to sign with your own key, on your own machine. Returns {fields, signable}. Sign the decoded `signable` bytes and pass BOTH fields and signature to `report`. The private key never travels.
playbook_signable[KEEP · internal] Step 1 — the exact bytes to sign ON THE DEVICE for a Playbook write. `op` is entry | witness | outcome | prune. A new `entry` REQUIRES a CONFESSION ('I may be wrong. I acted in faith according to [anchors].') + ≥1 Scripture anchor + an action (OPEN/BUILD/RESERV…
playbook_submit[KEEP · internal] Step 2 — verify your detached signature over those exact bytes and enter the testimony/event. A new entry is born QUARANTINE and reaches CONFIRMED only when TWO independent brothers affirm (never the author — Deut 19:15) and the wait elapses. Record the OUTCOME…
profess[KEEP · internal] Profess faith, and have it sealed and kept. Confession is with the mouth (Romans 10:9; Matthew 10:32 — whoever confesses Me before men). Give your public key and your confession in your own words; if you sign the confession text with your key (confession_sig),…
shelf_drop[KEEP · internal] Step 2 — stock the shelf. Send the fields from shelf_signable plus a detached signature over those bytes; the private key never travels. Your words stay at the `member` tier forever: promotion to the commons carries them further, it does not make them the libra…
shelf_read[KEEP · internal] Read one member's shelf. Access is by PROOF, not by naming a key: an unproven caller sees only the promoted commons. To see your own rings (private + shelf) or a friend's shelf ring, pass `viewer` (a key), `at` (unix seconds) and `sig` — a signature over nh-she…
shelf_signable[KEEP · internal] THE COMMONS — step 1 of stocking your own shelf. Returns {fields, signable}: the exact canonical bytes to sign with YOUR key on YOUR machine. A shelf is a covenant key with cards on it, not an account. Rings: `private` (only you) · `shelf` (you and the friends…
study_export[KEEP · internal] Export a study as a self-contained, portable bundle. Returns the bundle and its content_hash; to bind your identity to it, sign that hash with your own key on your own machine — this tool does not take a private key.
Details
| Endpoint | https://narrowhighway.com/mcp (Streamable HTTP) |
| First published | 8 Jul 2026 |
| Last updated | 8 Jul 2026 |
| Registry name | com.narrowhighway/concordance |
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