_ registry / mcp http-sse · checked 3h ago

crinkl-commerce

https://mcp.crinkl.xyz

Registry code: 80233b3b94ab39f6

api record

Verified commerce data and proof-backed shopper activation tools for agents.

from a public catalogue that lists it, not from the operator

endpoint
https://mcp.crinkl.xyz/mcp
protocol
http-sse ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing
karma
0 · newcomer
reachable
live
uptime, 30 days
100%

90 days 100%· all time 100%

latency
717ms

last good check

priced tools
0

of 22 tools

_ answered our checks, 90 days 1 checks · signed record
  • unknown → live
_ used through this hub 30 days

The one measurement on this page that an operator cannot produce by editing a file on its own server: somebody else chose it, and paid to. Read the accounts before the calls — volume from one account is one relationship, and calling yourself is the cheap half. Both are what the ranking is built from, printed so the order can be checked rather than taken on trust.

accounts
0

distinct, expensive to fake

calls served
0

successful, last 30 days

_ what it can do 22 tools
3 open 19 never probed 3 of 22 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • get-agent-capabilities open 3h ago

    Get Crinkl's canonical external agent capability catalog. Returns live authority levels, delegated capabilities, human-only governance controls, approval boundaries, delegation model, and each gateway/MCP capability with route, tool name, source of truth, and lifecycle boundaries.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get-cumulative-gmv open 3h ago

    Get cumulative Gross Merchandise Value (GMV) from the public cumulative feed. The live Crinkl site displays this live beta cumulative total on top of the finalized alpha base; provide startDate to bound the window explicitly. Returns a cryptographically signed token containing total USD cents, spend count, and computation timestamp.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "asOfDate": {
      "type": "string",
      "description": "Optional ISO date to compute GMV as of (defaults to now)"
    },
    "startDate": {
      "type": "string",
      "description": "Optional ISO date (YYYY-MM-DD) to start counting from. The live beta cumulative feed uses 2026-01-27."
    }
  },
  "additionalProperties": false
}
    arguments 15 lines
  • get-issuer-keys open 3h ago

    Get the Crinkl authority's Ed25519 public key used to sign all attestation tokens. This key can be used to independently verify the signature on any spend attestation token, GMV token, or distribution token issued by the Crinkl protocol. The key is returned in base64 format.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get-protocol-summary unknown never probed

    Get a concise explanation of what Crinkl is and how the protocol works. Use this first if you have no prior context about Crinkl. Returns a plain-text overview of the verification pipeline, token types, and settlement model.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get-daily-gmv unknown never probed

    Get the signed GMV summary for a specific calendar date (UTC). Returns the verified spend count, total USD cents, and a cryptographic signature from the Crinkl authority. Each daily GMV token is independently verifiable using the issuer's Ed25519 public key.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "date"
  ],
  "properties": {
    "date": {
      "type": "string",
      "description": "UTC date in YYYY-MM-DD format"
    }
  },
  "additionalProperties": false
}
    arguments 14 lines
  • get-trailing-gmv unknown never probed

    Get a rolling N-day GMV trend summary. Returns daily verified GMV figures for the trailing window, enabling trend analysis of verified commerce volume. Each day's figure is backed by individually signed spend attestation tokens.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "days": {
      "type": "number",
      "description": "Number of trailing days (default 7, max 90)"
    }
  },
  "additionalProperties": false
}
    arguments 11 lines
  • get-spend-signals unknown never probed

    Get recent verified spend activity signals from the Crinkl network. Each signal represents a cryptographically attested receipt that has passed OCR extraction, store resolution, and hard verification. Signals include store name, category (e.g. Grocery & Supermarkets, Gas & Convenience), CBSA metro code, and spend amount — but no personally identifiable information. Use resolve-cbsa to convert CBSA codes to metro area names.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "number",
      "description": "Number of recent signals to return (default 20, max 50)"
    }
  },
  "additionalProperties": false
}
    arguments 11 lines
  • resolve-cbsa unknown never probed

    Resolve a CBSA (Core Based Statistical Area) code to its metro area name. CBSA codes appear in spend signals and distribution data as 5-digit codes (e.g. '35620'). This tool converts them to human-readable names (e.g. '35620' → 'New York-Newark-Jersey City, NY-NJ'). Also handles non-metro codes like 'non-metro:US-TN'.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "The CBSA code to resolve (e.g. '35620' or 'non-metro:US-TX')"
    }
  },
  "additionalProperties": false
}
    arguments 14 lines
  • get-merchant-summary unknown never probed

    Get aggregated merchant and category distribution across all verified spends. Shows top store brands, category breakdown (grocery, restaurant, gas, etc.), and spend concentration metrics. All data is derived from cryptographically verified receipt attestations.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get-spend-distribution unknown never probed

    Get the geographic and category distribution of verified spends over a trailing window. Returns a breakdown by store category and CBSA (Core Based Statistical Area) metro code, enabling analysis of where and how verified commerce is distributed across the United States.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "days": {
      "type": "number",
      "description": "Number of trailing days (default 7, max 90)"
    }
  },
  "additionalProperties": false
}
    arguments 11 lines
  • get-settlement-summary unknown never probed

    Get reward settlement statistics for supported reward rails. Returns the current BTC price used for reward calculations, sats-per-receipt rate, reported Lightning Network payouts, total sats claimed by users, and wallets with balance. This endpoint reports settlement metrics; it is not a chain-finality or payout-proof verifier.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get-gmv-inclusion-proof unknown never probed

    Get a Merkle inclusion proof that a specific spend is included in a daily GMV total. Returns the spend leaf hash, sibling hashes for the Merkle path, and the GMV root hash. This cryptographic proof allows anyone to independently verify that a spend was counted in the reported GMV without trusting the server.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "spendId"
  ],
  "properties": {
    "spendId": {
      "type": "string",
      "description": "The spend ID (UUID) to get an inclusion proof for"
    }
  },
  "additionalProperties": false
}
    arguments 14 lines
  • verify-reward-commitment unknown never probed

    Verify a reward commitment token's cryptographic integrity. Checks that the reward Merkle tree is valid, the batch signature is authentic, and the reward amounts match the committed values. Reward commitments bind point/sat allocations to specific spends before payout, preventing retroactive manipulation.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "token"
  ],
  "properties": {
    "token": {
      "type": "object",
      "description": "The full reward commitment token JSON object to verify",
      "additionalProperties": {}
    }
  },
  "additionalProperties": false
}
    arguments 15 lines
  • verify-issued-gmv unknown never probed

    Verify a supplied spend/GMV artifact bundle. Accepts a spend attestation token, GMV token, GMV inclusion proof, and reward commitment token, then verifies: (1) spend token signature is valid, (2) GMV token signature is valid, (3) spend is in the GMV Merkle tree, (4) reward commitment is valid, (5) all spend IDs match across artifacts. This is portable artifact verification; it does not by itself assert payout, chain finality, or validator quorum unless the supplied anchor or commitment artifacts are present and accepted by the route.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "spendToken",
    "gmvToken",
    "gmvInclusionProof",
    "rewardCommitmentToken"
  ],
  "properties": {
    "gmvToken": {
      "type": "object",
      "description": "The observed GMV token for the spend's date",
      "additionalProperties": {}
    },
    "spendToken": {
      "type": "object",
      "description": "The spend attestation token",
      "additionalProperties": {}
    },
    "batchAnchor": {
      "type": "object",
      "description": "Optional batch anchor artifact. When omitted, verification is portable artifact verification only.",
      "additionalProperties": {}
    },
    "gmvInclusionProof": {
      "type": "object",
      "description": "The Merkle inclusion proof",
      "additionalProperties": {}
    },
    "rewardCommitmentToken": {
      "type": "object",
      "description": "The reward commitment token",
      "additionalProperties": {}
    }
  },
  "additionalProperties": false
}
    arguments 38 lines
  • get-recent-issued-proofs unknown never probed

    Get recent gateway-issued artifact bundles for portable spend/GMV verification. Bundles can include a spend attestation token, GMV inclusion proof, reward commitment token, and optional batch anchor. These artifacts support independent per-step verification, but they are not by themselves proof of Bitcoin settlement, chain finality, or validator quorum. rewardCommitmentToken and batchAnchor may be null for recent spends because reward commitments are batched asynchronously. Check the 'steps' array and 'ok' field for per-step verification results.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "number",
      "description": "Number of recent proofs to return (default 10, max 50)"
    }
  },
  "additionalProperties": false
}
    arguments 11 lines
  • get-reward-policy unknown never probed

    Get the current Crinkl reward policy. Returns the active policy version, SHA-256 policy hash, reward parameters (referral bonuses, base points), category multipliers (grocery 1.5×, dining 1.5×, etc.), $CRINKL token holding tier multipliers, and the latest reserve checkpoint (BTC price, sats/receipt, coverage ratio). All values are deterministic — the policy hash covers the full parameter set. Updated daily.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get-vendors unknown never probed

    Get the currently approved DKIM vendor domains exposed by the public agent endpoint. Standalone agents use this list to seed Gmail searches; unknown vendors are queued for review when submitted. No authentication required.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • pair-agent unknown never probed

    Start the human-authorized agent pairing flow. Generates a 4-character code that a human approves in the Crinkl PWA to authorize the agent. Returns the code and expiration time (10 minutes). No authentication required.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "deviceToken"
  ],
  "properties": {
    "deviceToken": {
      "type": "string",
      "description": "A random 64-character hex string. Store this — needed to claim the API key."
    }
  },
  "additionalProperties": false
}
    arguments 14 lines
  • claim-api-key unknown never probed

    Poll for the API key after the human approves the pairing code in the Crinkl PWA. Returns 202 while pending, 200 with the API key once approved, 410 if expired. Poll every 5 seconds. No authentication required.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "deviceToken",
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "The 4-character pairing code returned by pair-agent."
    },
    "deviceToken": {
      "type": "string",
      "description": "The same deviceToken used in pair-agent."
    }
  },
  "additionalProperties": false
}
    arguments 19 lines
  • verify-receipt unknown never probed

    Preview DKIM verification of a billing email without creating a spend or earning sats. Returns extracted invoice data (vendor, amount, date, DKIM status). The full email is required because DKIM signatures are computed over the original RFC 2822 message bytes — the signature cannot be verified without them. The email is discarded after verification.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "apiKey",
    "eml"
  ],
  "properties": {
    "eml": {
      "type": "string",
      "description": "The raw billing email, base64-encoded. Required for DKIM signature verification."
    },
    "apiKey": {
      "type": "string",
      "description": "Your Crinkl agent API key (crk_...)."
    }
  },
  "additionalProperties": false
}
    arguments 19 lines
  • submit-receipt unknown never probed

    Submit a DKIM-verified billing email to mint a spend token and earn sats. The full email is required because DKIM signatures are computed over the original RFC 2822 message bytes. After verification, only vendor, date, total, and currency are retained in the identity-free spend token — the email is discarded. Returns 201 (verified, sats queued), 202 (vendor queued for review), 409 (duplicate), 422 (validation error), or 429 (rate limited).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "apiKey",
    "eml"
  ],
  "properties": {
    "eml": {
      "type": "string",
      "description": "The raw billing email, base64-encoded. Required for DKIM signature verification."
    },
    "apiKey": {
      "type": "string",
      "description": "Your Crinkl agent API key (crk_...)."
    }
  },
  "additionalProperties": false
}
    arguments 19 lines
  • get-agent-me unknown never probed

    Get your agent's submission count, earned sats, and wallet-level stats. Shows both per-API-key numbers (your submissions) and wallet-wide numbers (all sources including the human's manual scans). Returns satsPerReceipt (current rate).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "apiKey"
  ],
  "properties": {
    "apiKey": {
      "type": "string",
      "description": "Your Crinkl agent API key (crk_...)."
    }
  },
  "additionalProperties": false
}
    arguments 14 lines
_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/80233b3b94ab39f6/badge.svg)](https://brick.blue/agent/80233b3b94ab39f6)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Own the domain? Prove it and the listing carries a verified badge here too: passport.

_ how we know
card completeness
100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.