Council of AI

Endpoints (18 live)

• GET /api/rwa/evidence — A signed XRPL evidence card for RLUSD: AccountRoot flags, Domain, two-way TOML check, and cited raw-fetch hashes. Historical state — not a rating or a guarantee. (0.01 USDC on Base)
• GET /api/proof — The inclusion-proof bundle for the last published Merkle root, re-served. Not a grade. (0.01 USDC on Base)
• GET /api/receipts/batch — Every signed measurement leaf in a time window, each with its Merkle inclusion path and carrying root. History assembly — not a conclusion. (0.01 USDC on Base)
• GET /api/eunomia-data — A signed JSON feed of enforcement and measurement artefacts already on the public root. Data only — no scores, no ranking. (0.02 USDC on Base)
• GET /api/request-attestation — A signed card-v0 commission receipt for one named subject, plus every already-signed measurement card on file for it. Payment never mints a MEASURED cell. (0.01 USDC on Base)
• GET /api/free-door — CSOAI free door: the live GSPC board totals and the public signed root, at a price of zero because it is free forever. That is the real price, not a promotion — a grade is never sold. Paid artefacts are catalogued at https://councilof.ai/api/x402. Measurement, not certification. (0 USDC on Base)
• GET /api/ras/x402-check — x402 challenge conformance receipt: one live GET of a public x402 resource, checked and signed. The rule is the daily census's: HTTP 402, a PAYMENT-REQUIRED header, x402Version 2 and extensions.bazaar in the body. States: CONFORMANT, NOT_CONFORMANT, TIMEOUT, UNREACHABLE or BLOCKED, delivered as found. Verification is free at /api/verify. (0.02 USDC on Base)
• GET /api/ras/supply — Token supply read receipt: one fresh totalSupply() read of an issuer-listed EVM deployment, signed. The address is parsed from the issuer's own page on the request (USDC). States: STATE_PROOF_VERIFIED on Ethereum (EIP-1186 proof checked against the block stateRoot), OPERATOR_API elsewhere, or UNCHECKABLE with the reason. Not a reserve attestation. Verification is free at /api/verify. (0.02 USDC on Base)
• GET /api/ras/mcp-probe — MCP discovery probe receipt: one live, read-only discovery of a public https MCP endpoint, signed. Runs server/discover, else initialize and tools/list, and never calls a tool: protocol version requested and negotiated, tool count, tool-names sha256. States include LISTED, PARTIAL, AUTH_REQUIRED, NOT_MCP, TIMEOUT and UNREACHABLE, delivered as found. Verification is free at /api/verify. (0.02 USDC on Base)
• POST /api/proof — Inclusion proof bundle for leaves available in the last published Merkle root, with leaf hashes, indexes, proof paths, the Merkle root and signed card count. Not a grade. (0.01 USDC on Base)
• POST /api/art50/marking-evidence — A signed card recording whether a machine-readable mark was detected in one named output, by named methods, at one time. Detection, never a conformity opinion. (0.01 USDC on Base)
• POST /api/feeds/provider-diff — Every hash-only provider-document diff leaf to date, each with its inclusion proof to the signed root. Hashes only — no page content, no verdict. (0.01 USDC on Base)
• POST /api/request-attestation — One named subject gets a card-v0 commission receipt: SHA-256 content-addressed and Ed25519-signed by did:web:csoai.org#board-attestation-1 when available, otherwise sig_ed25519:null with unsigned_reason. Check csoai.signer before paying. Paid reserve returns up to 24 card-v1 references from dated /signed/card-matrix.json only; reserve_count covers that corpus. The separate interop root in the free preview is not included in the paid reserve. Payment never creates a MEASURED board cell. (0.01 USDC on Base)
• POST /api/evidence-bundle — An OSCAL 1.1.0 assessment-results bundle of already-signed CSOAI cards, mapped to EU-AI-ACT-50. Not a conformity determination. (0.01 USDC on Base)
• POST /api/free-door — CSOAI free door: the live GSPC board totals and the public signed root, at a price of zero because it is free forever. That is the real price, not a promotion — a grade is never sold. Paid artefacts are catalogued at https://councilof.ai/api/x402. Measurement, not certification. (0 USDC on Base)
• GET /api/feeds/provider-diff — Every hash-only provider-document diff leaf to date, each with its inclusion proof to the signed root. Hashes only — no page content, no verdict. (0.01 USDC on Base)
• GET /api/evidence-bundle — An OSCAL 1.1.0 assessment-results bundle of already-signed CSOAI cards, mapped to one obligation. Not a conformity determination. (0.01 USDC on Base)
• GET /api/art50/marking-evidence — A signed card recording whether a machine-readable mark was detected in one named output, by named methods, at one time. Detection, never a conformity opinion. (0.01 USDC on Base)

MCP tools (19)

csoai-gspc-mcp https://councilof.ai/mcp

• art50_marking_evidence — PAID (x402 or CSOAI LTD invoice). Article 50 marking-evidence pack via https://councilof.ai/api/art50/marking-evidence: is a machine-readable mark DETECTABLE in these bytes right now (C2PA manifest store, assertion hashes, hard binding, claim signature; IPTC digitalSourceType), beside the verbatim Art 50(2) excerpt hash and the Art 99(4) ceiling. Watermarks are UNCHECKABLE where no public detector exists and the pack says so. Point-in-time detection — never a conformity opinion, never a compliance word of any kind. preview=true is free and returns the same measurement unsigned. Without x_payment the tool returns the 402 challenge. If the route is not deployed on this origin the tool says NOT_DEPLOYED rather than inventing a result.
• board_totals — Live GSPC board totals from https://councilof.ai/api/gspc. Returns the slot count and the measured count as two labelled numbers WITH their kind — a slot is a declared position on the board, a measurement is a real run behind it; the two are never summed and never swapped — plus the board's separation line, and as_of dates for the board and for this fetch. Compact by default; pass detail "full" for the long-form count grammar, the per-family counts and the board's full measured_on block. We measure, never certify. If the board cannot be fetched the answer is a distinct UNREACHABLE state: no cached number is ever presented as live.
• commission_card — PAID (x402). Commission one signed card-v0 receipt (surface ras.commission) for a named subject on the frozen bank via https://councilof.ai/api/request-attestation. Re-serves every signed measurement card already on file for the subject; a payment never mints a MEASURED cell (fresh_run stays UNMEASURED until a published run exists). Without x_payment the tool returns the 402 challenge (accepts[] with asset, amount, payTo) plus a free preview of the cards already on file. Measurement, not certification — never a rank, a grade or a certificate. Verification stays free.
• evidence_bundle — PAID (x402). An evidence bundle for ONE obligation (article-50, article-53 GPAI transparency, dora or cra) and an optional subject via https://councilof.ai/api/evidence-bundle: OSCAL 1.1.0 assessment-results assembled only from already-signed measurement cards (each with its card bytes and Merkle inclusion proof), plus one manifest card-v0, signed when the signing key is present. Observations are relevant-to the obligation, never satisfied or not satisfied; zero relevant cards ships as an empty bundle, and the free preview says so first (preview=true here, or the free tool evidence_bundle_preview). Article 53 output is evidence for review, not a legal determination. Evidence for obligation work — not a conformity assessment, certification, audit opinion or compliance determination; grants no status. Measurement, not certification. Without x_payment the tool returns the 402 challenge, which is the only place terms appear. Verification of any card is free at https://councilof.ai/gspc-ver
• evidence_bundle_preview — For ONE obligation (article-50, article-53 GPAI transparency, dora or cra) and an optional subject: the obligation record, its counsel-gate status and the already-signed measurement cards that are relevant to it (count plus the first cards, each with its verify link), read live from https://councilof.ai/api/evidence-bundle. Relevant-to is never a determination: no answer says satisfied or not satisfied, and zero relevant cards is answered EMPTY, never as an error and never as a clean bill. Article 53 output is evidence for review, not a legal determination. Evidence for obligation work — not a conformity assessment, certification, audit opinion or compliance determination; grants no status. Measurement, not certification. Verification of any card is free at https://councilof.ai/gspc-verify.
• get_axis — One axis row from the live GSPC board at https://councilof.ai/api/gspc — every axis the board carries, behavioural and financial families alike, addressed by the axis id exactly as the board spells it: n, accuracy, interval, MEASURED or UNMEASURED status, family, kind, the bank or run-artifact URL behind the row, and dates. An unmeasured axis is a first-class answer — a declared slot with no run behind it, published so the gap is visible — never an error and never a zero. Never a certification.
• get_card — GET one public-root card-v0 leaf by sha256 (64 hex) from https://councilof.ai/cards/{sha16}.json. UNMEASURED cells stay visible. States: VALID (fetched); NOT_IN_THIS_CORPUS (the id is in the signed card index, not the public root, so use verify_card on it); INVALID (in neither the live root nor the signed card index); UNCHECKABLE (a source could not be read). Not a GSPC measurement-card.
• get_root — GET the permissionless public-root at https://councilof.ai/root.json. Returns merkle_root, card_count, as_of, and UNMEASURED notes. Separate from GSPC. Three states: VALID (fetched), UNREACHABLE (could not fetch), UNCHECKABLE (body unreadable). Never a certificate.
• list_cards — The published signed-card index (https://councilof.ai/signed/card_index.json): what the index declares (n_cards) and how many rows it actually carries, reported next to — never reconciled with — the count the card store endpoint (https://councilof.ai/api/cards) reports for itself. Two labelled numbers from two surfaces; if they disagree, this tool shows the disagreement rather than picking one. Optional filters return recent rows: axis, limit. Each row carries card_url, the signed body; pass it, or the row's 64-hex card id, to verify_card.
• mcp_trust — GET the latest MCP handshake trust snapshot (https://councilof.ai/interop/mcp-trust/latest.json): counts of how many internet-facing MCP servers answer a correct initialize handshake, how many respond with an auth challenge, and how many are unreachable. Counts only by doctrine — host details withheld by design. A partial round or a cap change is disclosed in the snapshot. Measurement, never certification. Three states: VALID (fetched), UNREACHABLE (could not fetch), UNCHECKABLE (body unreadable).
• measurement_index — Read the latest signed measurement-capsule index published at https://councilof.ai/measurement-capsules/latest.json: the index root over every capsule, each batch (adapter, kind, capsule count, measurement states, batch Merkle root, record sha256, record signature and OpenTimestamps state), the index's own board signature re-verified here against the pinned did:web:csoai.org#board-attestation-1 key, and the anchor states published beside it (OpenTimestamps, Rekor, XRPL) — PENDING is never called attested. States only: measurement, not endorsement; no verdict, score or ranking. NOT_PUBLISHED when no index is served; UNREACHABLE when the source could not be fetched.
• receipts_batch — PAID (x402 or CSOAI LTD invoice). A historical batch of the estate's measurement receipts via https://councilof.ai/api/receipts/batch: every signed card-v0 leaf whose as_of falls in [from,to] (≤200), each with its Merkle inclusion path and the public root(s) that carried it, plus the root index for the window and one signed manifest card citing the batch sha256. preview=true is free and returns count, span, root count and the sha256 of the exact bytes the paid call returns. Recent leaves are free at /root.json, /cards/ and /api/proof?sha= — the batch sells assembly across history, never a conclusion. No settlement-receipt stream exists (/api/receipts/latest is UNPUBLISHED) and this tool never claims one. Without x_payment the tool returns the 402 challenge.
• route — GSPC Route (free, decide-only). Applies YOUR policy and the fixed GSPC floor to a candidate set and returns the chosen candidate, the basis of the choice and an unsigned route record (csoai.evidence-event/0.1, profile csoai.route-evidence/0.1). Candidates are the GSPC MCP tools by default, or ones you declare: your models, your local GPU, MCP tools, A2A agents, x402 resources. Policy is Cedar: presets read-only, local-only, eu-only, no-unmeasured, plus forbid_providers and allow_kinds; anything the router does not understand grants nothing. For the quality axis you name it reads the live board (https://councilof.ai/api/gspc). Routing is not ranking: a choice is called a separated leader only when the board separated that comparison; otherwise it is TIE or UNTESTED and your tie_break decides. A candidate the board holds no number for is UNTESTED, never 0. Sponsor, bid and placement fields are ignored. The task text is hashed, never stored. Nothing is executed, called or charged; mode ex
• rwa_evidence — PAID (x402). Per-request signed evidence card of ONE XRPL issued asset's deterministic on-ledger state via https://councilof.ai/api/rwa/evidence: AccountRoot lsf* flags, Domain, the two-way xrp-ledger.toml check (PASS / FAIL / UNCHECKABLE — unreachable is never FAIL), gateway_balances obligation, holders as the free reader has them, every raw fetch sha256'd. preview=true is free (unsigned state). Historical state at fetched_at — not a rating, not a guarantee, not a conformity mark; /api/xrpl and /root.json stay free. Without x_payment the tool returns the 402 challenge. If the route is not deployed on this origin the tool says NOT_DEPLOYED.
• server_evidence — Trust per server, not totals: every published measurement capsule about ONE endpoint URL across all batches — MCP contract-parity dimensions (AUTH, PAYMENT, PROTOCOL, TOOLS, VERSION), A2A card-signature state, self-parity cells for CSOAI's own doors, and any later adapter (e.g. tool drift) — each with its measurement_state, observed_at, correction_pointer, limitations, batch Merkle root and an inclusion pointer (verify_capsule re-derives inclusion). Read from a static per-endpoint shard keyed by sha256 of the normalised URL. An endpoint with no capsule answers NOT_MEASURED with an empty list — never an error and never a clean bill. No verdict, score or ranking: measurement, not endorsement.
• verify_capsule — Verify one measurement capsule. Pass capsule_json as the capsule's JSON TEXT (exact: number lexemes are kept) or as an object. Recomputes capsule_id (sha256 of the canonical JSON without capsule_id), picks the rule by the capsule's schema (csoai.measurement-capsule/0.2: RFC 6962 Merkle with 0x00/0x01 domain separation; the superseded v0.1 capsule schema: the v0.1 rule), finds the published batch of the same kind, recomputes that batch's root from its published leaves, and returns the audit path of this capsule against the root named by the signed index. States: INCLUDED, NOT_INCLUDED, ID_MISMATCH, UNCHECKABLE, NOT_PUBLISHED. Verifying is free forever. It proves the bytes were published and bound; what they measured is the capsule's own measurement_state and limitations — measurement, not endorsement.
• verify_card — Verify a signed gspc.measurement-card under the published rule (https://councilof.ai/signed/HOW-TO-VERIFY.md): recompute the id from the canonical body bytes, then check the Ed25519 signature under a key PINNED in this verifier and published in the did:web:csoai.org DID document: #card-attestation-1 (the card key of the signed card index) or #card-attestation-2 (the card key added on rotation, 27 Sep 2026; a card names the key it was signed under), plus the board key for the cards it signed. pinned_key in the result names the key that matched. A card that carries its own key proves only that the file is self-consistent — anyone can alter a body and sign it with a key they just generated — so an inline key outside the pinned set is reported INVALID, and a DID key reference outside it UNCHECKABLE. Three verdicts, never two: VALID, INVALID (with the reason), or UNCHECKABLE when the check could not be completed — 'could not check' is a different claim from 'forged'. Accepts the card as a J
• verify_inclusion — Check a sha256 against the live public-root merkle via GET /api/proof?sha=. Three states only: VALID (included), INVALID (not a leaf), UNCHECKABLE (proof endpoint unreachable). Does not claim Ed25519 unless sig_ed25519 is present and checked separately. Never a grade.
• x402_trust — GET the latest x402 catalog trust snapshot: counts of how many catalogued x402 resources open a correct 402 challenge vs how many are phantom on the wire. Counts only by doctrine — host details withheld; a 402 is NOT delivery; measurement, never certification.