satledger timestamp receipt

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

RFC 3161 timestamps with no account, and a signed agent-ledger workspace. Paid per call over x402.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "satledger timestamp receipt": {
      "url": "https://api.satledger.org/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (14)

• timestamp_receipt

  Submit a SHA-256 digest and receive a Time-Stamp Authority's signed RFC 3161 token over it: evidence that the data you hashed existed at that time, verifiable against the authority without trusting or contacting this service. Hash your data yourself - it never leaves your side. Your first 3 each day are free, no payment needed. Then 0.05 USDC for one, or 0.50 for up to 10 in a single call and a single payment, bound to one timestamp by a Merkle root. Paid over x402. No account, nothing stored here afterwards.

  Parameters:

  • digest — string — SHA-256 hex digest, 64 characters.
  • digests — array — Up to 10 digests in one call and one payment, bound to a single timestamp by a Merkle root. Each comes back with the proof that binds it.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• provision_workspace

  Buy a workspace: a tamper-evident usage and action ledger for your agents, every event ed25519-signed and hash-chained, with an export your own customers verify offline. Pay over x402 in _meta[x402/payment]: 0.50 USDC for 2,500 units (starter), 15.00 USDC for 100,000 units (block). Every workspace also carries 10,000 free units. Returns an API key once, plus the next calls to make. The ledger operations themselves are HTTP, authenticated with that key.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• top_up_workspace

  Add units to a workspace you already hold. Send its API key in _meta[satledger/api-key] (or the api_key argument) and the payment in _meta[x402/payment]: 0.50 USDC for 2,500 units (starter), 15.00 USDC for 100,000 units (block). The units land in that workspace and nothing new is created; buying a workspace instead gives you an empty ledger under a different key.

  Parameters:

  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• create_agent

  Create an agent in your workspace: a named ledger whose every event is ed25519-signed and hash-chained. `initial_credits` mints supply to the workspace issuer, not to the agent - fund_agent moves credits across when you need usage metering. Costs 1 unit. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • display_name (required) — string
  • initial_credits (required) — integer
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• record_action

  Append what an agent did - a tool call, a decision, a message - as a signed, hash-chained entry. This is the thing the workspace is for. Costs 1 unit. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • kind (required) — string
  • detail — object — Anything you want recorded, as an object.
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• fund_agent

  Move credits from the workspace issuer to an agent's own account, so record_usage can burn them. Costs 1 unit. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • amount (required) — integer
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• record_usage

  Burn credits from an agent's account, as a signed ledger event. Costs 1 unit. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • amount (required) — integer
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• anchor_agent

  Ask a public RFC 3161 Time-Stamp Authority to sign the agent's current state. The one fact here the operator cannot manufacture: a timestamp cannot be issued for a time that has passed. An unchanged state returns the anchor it already has. Costs 100 units. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• export_agent

  Build the export bundle, run the customer-side verifier over it and return the summary plus the URL of the archive (HTTP, X-API-Key, free). Pass expect_action_head / expect_action_count from state YOU kept to check completeness. Free, permanently. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.
  • expect_action_head — string
  • expect_action_count — integer

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• list_agents

  Every agent in your workspace. Free. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• describe_agent

  Current state: root id, state hash, event count, balance. Free. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• list_actions

  The agent's action log, with its head hash. Free. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• list_anchors

  Every anchor commitment recorded for the agent. Free. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • agent_id (required) — string
  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• workspace_balance

  Units remaining and what each operation costs. Free, so you can plan before you are refused. Authenticate with the workspace key in _meta[satledger/api-key].

  Parameters:

  • api_key — string — Your workspace key, if your client cannot set _meta[satledger/api-key]. Prefer _meta: arguments are logged by most clients.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

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