bernstein-mcp
Verifies Bernstein run receipts and hash chains; lists the shipped presets and adapters. Read-only.
使うべきか
品質と安全性
A
検出事項（2）
- LOWTool 'server_info' description lacks action verbserver_info 内
- LOWTool 'list_adapters' description lacks action verblist_adapters 内
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
~4,646トークン数（ツール定義）
~4.1 KB一般的なレスポンスサイズ
注意への影響は大きい（128k コンテキストの 3.63%）
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"bernstein-mcp": {
"url": "https://mcp.bernstein.run/mcp"
}
}
}リモートエンドポイント
https://mcp.bernstein.run/mcpstreamable-httpできること
ツール一覧
ツール（11）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
⚪server_info
Identity, version, and request limits for this MCP server.
入力スキーマ
{
"type": "object",
"properties": {}
}出力スキーマ
{
"type": "object",
"properties": {
"name": {
"type": "string"
},
"version": {
"type": "string"
},
"limits": {
"type": "object",
"properties": {
"max_body_bytes": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 9007199254740991
},
"max_chain_entries": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 9007199254740991
},
"max_trace_records": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 9007199254740991
}
},
"required": [
"max_body_bytes",
"max_chain_entries",
"max_trace_records"
],
"additionalProperties": false
},
"verdict_key": {
"anyOf": [
{
"type": "object",
"properties": {
"kty": {
"type": "string"
},
"crv": {
"type": "string"
},
"x": {
"type": "string"
},
"kid": {
"type": "string"
},
"use": {
"type": "string"
},
"alg": {
"type": "string"
}
},
"required": [
"kty",
"crv",
"x",
"kid",
"use",
"alg"
],
"additionalProperties": false
},
{
"type": "null"
}
],
"description": "Public Ed25519 JWK this deployment signs verdicts with; also at keys_url."
},
"keys_url": {
"type": "string"
}
},
"required": [
"name",
"version",
"limits",
"verdict_key",
"keys_url"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢verify_receipt(receipt)
Recompute every hash chain a bernstein run receipt embeds (journal, lineage spine, optional audit range), rebuild the signed subject from the recomputed heads, and check the Ed25519 signature with the key the receipt carries. Needs no secret and reads nothing but the receipt. Returns the verdict, the first failing check, one line per check, and the same verdict as a DSSE envelope signed by this verifier's Ed25519 key (public key at keys_url) so the outcome can be kept and re-checked offline.
入力スキーマ
{
"type": "object",
"properties": {
"receipt": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
],
"description": "The run receipt: pass the file contents as a string for byte-exact verification, or the parsed object."
}
},
"required": [
"receipt"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"verdict": {
"type": "string",
"enum": [
"valid",
"invalid",
"unverifiable"
]
},
"failing_check": {
"anyOf": [
{
"type": "string",
"enum": [
"schema",
"journal_chain",
"journal_head",
"spine_chain",
"spine_head",
"audit_range_head",
"audit_range_linkage",
"audit_range_hmac",
"subject_binding",
"signature"
]
},
{
"type": "null"
}
]
},
"divergent_step": {
"anyOf": [
{
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
{
"type": "null"
}
]
},
"receipt_sha256": {
"type": "string"
},
"checks": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"enum": [
"schema",
"journal_chain",
"journal_head",
"spine_chain",
"spine_head",
"audit_range_head",
"audit_range_linkage",
"audit_range_hmac",
"subject_binding",
"signature"
]
},
"outcome": {
"type": "string",
"enum": [
"ok",
"fail",
"unverifiable",
"skipped"
]
},
"detail": {
"type": "string"
}
},
"required": [
"name",
"outcome",
"detail"
],
"additionalProperties": false
}
},
"summary": {
"anyOf": [
{
"type": "object",
"properties": {
"run_id": {
"type": "string"
},
"schema_version": {
"type": "string"
},
"hash_profile": {
"type": "string"
},
"journal_events": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"spine_entries": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"audit_events": {
"anyOf": [
{
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
{
"type": "null"
}
]
},
"key_id": {
"type": "string"
},
"producer": {
"type": [
"string",
"null"
]
},
"tool_calls": {
"anyOf": [
{
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
{
"type": "null"
}
]
}
},
"required": [
"run_id",
"schema_version",
"hash_profile",
"journal_events",
"spine_entries",
"audit_events",
"key_id",
"producer",
"tool_calls"
],
"additionalProperties": false
},
{
"type": "null"
}
]
},
"verify_url": {
"type": [
"string",
"null"
]
},
"signed_verdict": {
"anyOf": [
{
"type": "object",
"properties": {
"payloadType": {
"type": "string"
},
"payload": {
"type": "string"
},
"signatures": {
"type": "array",
"items": {
"type": "object",
"properties": {
"keyid": {
"type": "string"
},
"sig": {
"type": "string"
}
},
"required": [
"keyid",
"sig"
],
"additionalProperties": false
}
}
},
"required": [
"payloadType",
"payload",
"signatures"
],
"additionalProperties": false
},
{
"type": "null"
}
],
"description": "DSSE envelope over the verdict statement (JCS JSON in payload), Ed25519 over the DSSE PAE."
},
"keys_url": {
"type": "string"
},
"note": {
"type": [
"string",
"null"
]
}
},
"required": [
"verdict",
"failing_check",
"divergent_step",
"receipt_sha256",
"checks",
"summary",
"verify_url",
"signed_verdict",
"keys_url",
"note"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢explain_receipt(receipt)
Verify a run receipt and narrate the result in plain language: what the run recorded, which chains recomputed, where the first divergence is, and what an auditor can and cannot conclude without the producing install's keys.
入力スキーマ
{
"type": "object",
"properties": {
"receipt": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
],
"description": "The run receipt: pass the file contents as a string for byte-exact verification, or the parsed object."
}
},
"required": [
"receipt"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"verdict": {
"type": "string",
"enum": [
"valid",
"invalid",
"unverifiable"
]
},
"explanation": {
"type": "string"
},
"receipt_sha256": {
"type": "string"
}
},
"required": [
"verdict",
"explanation",
"receipt_sha256"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}⚪verify_chain(entries, kind)
Walk bernstein chain rows and recompute every link: journal rows (event_hash), lineage spine entries (entry_hash) or audit events (prev_hmac linkage). The row kind is detected from the fields, or pass `kind` explicitly. Reports the first divergent index. Pass `entries` as the file text (a JSON array or one row per line, as journal.jsonl is written) for byte-exact hashing; a parsed array also works, but then a float spelled 1.0 or -0.0 in the file cannot be told apart from an integer.
入力スキーマ
{
"type": "object",
"properties": {
"entries": {
"anyOf": [
{
"maxItems": 2000,
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
{
"type": "string",
"maxLength": 1048576
}
],
"description": "Rows in chain order, oldest first: a JSON array, or the raw text of the file."
},
"kind": {
"type": "string",
"enum": [
"journal",
"spine",
"audit_linkage"
]
}
},
"required": [
"entries"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"kind": {
"type": "string",
"enum": [
"journal",
"spine",
"audit_linkage"
]
},
"intact": {
"type": "boolean"
},
"entries": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"head": {
"type": "string"
},
"divergent_index": {
"anyOf": [
{
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
{
"type": "null"
}
]
},
"detail": {
"type": "string"
}
},
"required": [
"kind",
"intact",
"entries",
"head",
"divergent_index",
"detail"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}⚪verify_trace_record(record)
TRACE v0.2 conformance checks on one Trust Record, stateless, no account: schema (vendored trace-claim.json), profile, subject URI, software-only runtime rule, policy digest, public-only confirmation key, the embedded signature (EdDSA, ES256 or ES384 with the key in cnf.jwk), appraisal, delegation link shape and references. Nothing is fetched: resolvers are checked as URIs only. `record_sha256` is the RFC 8785 digest of the complete record, signature included — the value a child hop puts in delegation.parent_record_hash.
入力スキーマ
{
"type": "object",
"properties": {
"record": {
"anyOf": [
{
"type": "string",
"maxLength": 1048576
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
],
"description": "A TRACE v0.2 Trust Record: the file contents as a string, or the parsed object."
}
},
"required": [
"record"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"verdict": {
"type": "string",
"enum": [
"valid",
"invalid",
"unverifiable"
]
},
"failing_check": {
"anyOf": [
{
"type": "string",
"enum": [
"parse",
"schema",
"profile",
"subject",
"runtime",
"policy",
"cnf_key",
"signature",
"appraisal",
"delegation",
"references",
"canonicalization"
]
},
{
"type": "null"
}
]
},
"record_sha256": {
"type": "string"
},
"checks": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"enum": [
"parse",
"schema",
"profile",
"subject",
"runtime",
"policy",
"cnf_key",
"signature",
"appraisal",
"delegation",
"references",
"canonicalization"
]
},
"outcome": {
"type": "string",
"enum": [
"ok",
"fail",
"unverifiable",
"skipped"
]
},
"detail": {
"type": "string"
}
},
"required": [
"name",
"outcome",
"detail"
],
"additionalProperties": false
}
},
"summary": {
"anyOf": [
{
"type": "object",
"properties": {
"subject": {
"type": "string"
},
"eat_profile": {
"type": "string"
},
"iat": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"model_id": {
"type": "string"
},
"provider": {
"type": "string"
},
"data_class": {
"type": "string"
},
"key_thumbprint": {
"type": "string"
},
"has_delegation": {
"type": "boolean"
},
"references": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"tool_calls": {
"anyOf": [
{
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
{
"type": "null"
}
]
}
},
"required": [
"subject",
"eat_profile",
"iat",
"model_id",
"provider",
"data_class",
"key_thumbprint",
"has_delegation",
"references",
"tool_calls"
],
"additionalProperties": false
},
{
"type": "null"
}
]
},
"note": {
"type": [
"string",
"null"
]
}
},
"required": [
"verdict",
"failing_check",
"record_sha256",
"checks",
"summary",
"note"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}⚪verify_agent_manifest(manifest, trustRecord)
Agent Manifest v0.2 conformance checks on one manifest, stateless, no account: schema (vendored agent-manifest.schema.json), profile context, version, canonicalization, COSE envelope signature (Ed25519, key identified by kid in the protected header; ML-DSA-65 is reported unverifiable). Optionally checks that a TRACE Trust Record cites this manifest by digest. Nothing is fetched; resolvers are checked as URIs only. The manifest hash is sha256 over the COSE payload bytes (or RFC 8785 canonical JSON for object input).
入力スキーマ
{
"type": "object",
"properties": {
"manifest": {
"anyOf": [
{
"type": "string",
"maxLength": 1048576
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
],
"description": "The agent manifest: COSE envelope as base64 string, or the parsed JSON object (payload)."
},
"trustRecord": {
"description": "Optional TRACE v0.2 Trust Record to check if it cites this manifest (references[].rel == 'agent-manifest').",
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"manifest"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"verdict": {
"type": "string",
"enum": [
"valid",
"invalid",
"unverifiable"
]
},
"failing_check": {
"anyOf": [
{
"type": "string",
"enum": [
"parse",
"cose_structure",
"protected_header",
"schema",
"profile",
"version",
"canonicalization",
"signature",
"record_cites_manifest"
]
},
{
"type": "null"
}
]
},
"manifest_sha256": {
"type": "string"
},
"checks": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"enum": [
"parse",
"cose_structure",
"protected_header",
"schema",
"profile",
"version",
"canonicalization",
"signature",
"record_cites_manifest"
]
},
"outcome": {
"type": "string",
"enum": [
"ok",
"fail",
"unverifiable",
"skipped"
]
},
"detail": {
"type": "string"
}
},
"required": [
"name",
"outcome",
"detail"
],
"additionalProperties": false
}
},
"summary": {
"anyOf": [
{
"type": "object",
"properties": {
"manifest_id": {
"type": "string"
},
"agent_id": {
"type": "string"
},
"version": {
"type": "string"
},
"issued_at": {
"type": "string"
},
"expires_at": {
"type": "string"
},
"issuer": {
"type": "string"
},
"crypto_profile": {
"type": "string"
},
"manifest_hash": {
"type": "string"
},
"key_kind": {
"type": "string"
},
"key_kid": {
"type": "string"
}
},
"required": [
"manifest_id",
"agent_id",
"version",
"issued_at",
"expires_at",
"issuer",
"crypto_profile",
"manifest_hash",
"key_kind",
"key_kid"
],
"additionalProperties": false
},
{
"type": "null"
}
]
},
"note": {
"type": [
"string",
"null"
]
}
},
"required": [
"verdict",
"failing_check",
"manifest_sha256",
"checks",
"summary",
"note"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢verify_delegation_chain(records, context)
TRACE v0.2 delegation-chain conformance, stateless, no account: index every Trust Record by the RFC 8785 digest of its complete form, start at the leaf, follow delegation.parent_record_hash to the root, and check each hop's signature, the root key against `trusted_root_keys`, the depth bound, the link's digest algorithm, the credential (registered, issuer = parent subject, holder = record subject, window at the hop's own iat) and data_class narrowing under `data_class_lattice`. Classification: provenance-invalid outranks authorization-invalid; an unread link is unverifiable, not broken. Pass `records` as a JSON array or as file text (one record per line or a JSON array).
入力スキーマ
{
"type": "object",
"properties": {
"records": {
"anyOf": [
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
]
}
},
{
"type": "string",
"maxLength": 1048576
}
],
"description": "The record set in any order: a JSON array of records (objects or strings), or the raw text of a file."
},
"context": {
"type": "object",
"properties": {
"leaf": {
"description": "Digest of the record under appraisal (`sha256:<hex>`); absent → the record no other record names as parent.",
"type": "string"
},
"now": {
"description": "Carried for completeness; credential windows are judged at each hop's own iat.",
"type": "number"
},
"max_depth": {
"description": "Default 8.",
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"supported_digest_algorithms": {
"description": "Default [\"sha256\"]; \"sha384\" is also computed.",
"type": "array",
"items": {
"type": "string"
}
},
"data_class_lattice": {
"description": "Least to most sensitive; classes outside it are not compared. Default [].",
"type": "array",
"items": {
"type": "string"
}
},
"trusted_root_keys": {
"description": "Public JWKs; identity is (kty, crv, x, y). Default [] → the root is untrusted.",
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"credentials": {
"description": "credential_id → {issuer, holder, not_before, not_after}. Default {} → every hop's credential is unknown.",
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"type": "object",
"properties": {
"issuer": {
"type": "string"
},
"holder": {
"type": "string"
},
"not_before": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"not_after": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
}
},
"required": [
"issuer",
"holder",
"not_before",
"not_after"
]
}
}
}
}
},
"required": [
"records"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"classification": {
"type": "string",
"enum": [
"verified",
"provenance-invalid",
"authorization-invalid",
"unverifiable"
]
},
"codes": {
"type": "array",
"items": {
"type": "string"
}
},
"failures": {
"type": "array",
"items": {
"type": "string"
}
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"depth": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"walk": {
"type": "array",
"items": {
"type": "object",
"properties": {
"record_sha256": {
"type": "string"
},
"subject": {
"type": "string"
},
"depth": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"delegation": {
"anyOf": [
{
"type": "object",
"properties": {
"parent_record_hash": {
"type": "string"
},
"credential_id": {
"type": "string"
}
},
"required": [
"parent_record_hash",
"credential_id"
],
"additionalProperties": false
},
{
"type": "null"
}
]
},
"codes": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"record_sha256",
"subject",
"depth",
"delegation",
"codes"
],
"additionalProperties": false
}
},
"first_broken_link": {
"anyOf": [
{
"type": "object",
"properties": {
"record_sha256": {
"type": "string"
},
"code": {
"type": "string"
},
"detail": {
"type": "string"
}
},
"required": [
"record_sha256",
"code",
"detail"
],
"additionalProperties": false
},
{
"type": "null"
}
]
},
"note": {
"type": [
"string",
"null"
]
}
},
"required": [
"classification",
"codes",
"failures",
"warnings",
"depth",
"walk",
"first_broken_link",
"note"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢explain_trace_mapping(receipt)
How a bernstein run maps onto a TRACE v0.2 Trust Record: one row per claim with the journal field it is sourced from and the rule that derives it. Pass a run receipt to fill in the rows its embedded journal can answer (subject, iat, model, data_class, policy digest, tool transcript) alongside the receipt's own verdict.
入力スキーマ
{
"type": "object",
"properties": {
"receipt": {
"description": "Optional run receipt: the file contents as a string, or the parsed object.",
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
]
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"mapping": {
"type": "array",
"items": {
"type": "object",
"properties": {
"claim": {
"type": "string"
},
"source": {
"type": "string"
},
"rule": {
"type": "string"
},
"value": {
"type": [
"string",
"null"
]
}
},
"required": [
"claim",
"source",
"rule",
"value"
],
"additionalProperties": false
}
},
"markdown": {
"type": "string"
},
"verdict": {
"anyOf": [
{
"type": "string",
"enum": [
"valid",
"invalid",
"unverifiable"
]
},
{
"type": "null"
}
]
},
"receipt_sha256": {
"type": [
"string",
"null"
]
}
},
"required": [
"mapping",
"markdown",
"verdict",
"receipt_sha256"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢list_presets
The compliance presets bernstein v3.19.2 ships, with the switches each one turns on.
入力スキーマ
{
"type": "object",
"properties": {}
}出力スキーマ
{
"type": "object",
"properties": {
"bernstein_version": {
"type": "string"
},
"presets": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"enabled": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"name",
"enabled"
],
"additionalProperties": false
}
}
},
"required": [
"bernstein_version",
"presets"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_preset(name)
Every field of one compliance preset as bernstein v3.19.2 resolves it.
入力スキーマ
{
"type": "object",
"properties": {
"name": {
"type": "string",
"enum": [
"development",
"hipaa",
"regulated",
"standard"
]
}
},
"required": [
"name"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}出力スキーマ
{
"type": "object",
"properties": {
"bernstein_version": {
"type": "string"
},
"name": {
"type": "string"
},
"config": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"bernstein_version",
"name",
"config"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢list_adapters
The agent adapters bundled with bernstein v3.19.2: adapter name, the binary it drives, the module that implements it.
入力スキーマ
{
"type": "object",
"properties": {}
}出力スキーマ
{
"type": "object",
"properties": {
"bernstein_version": {
"type": "string"
},
"adapters": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"binary": {
"type": "string"
},
"module": {
"type": "string"
}
},
"required": [
"name",
"binary",
"module"
],
"additionalProperties": false
}
}
},
"required": [
"bernstein_version",
"adapters"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}コミュニティ
エビデンス
最近の観測
検証済みバージョンは記録されていませんツール 11 件
検証済みバージョンは記録されていませんツール 10 件