AgentLedger
https://agent-ledger-production-0ff8.up.railway.app/mcp/ ↗
Description
Per-agent spend management: x402/MPP/API-key rails, budget caps, anomaly alerts, audit trails.
What our measurements say
AgentLedger is a remote MCP server published at agent-ledger-production-0ff8.up.railway.app. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 346 ms, placing it among the faster endpoints. It offers a narrow, focused set of 7 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names clearly indicate their purpose (e.g., 'ledger_set_budget' for budget management).
- Descriptions include contextual usage scenarios (e.g., 'ledger_report' for rolling spend analysis).
Weaknesses
- Descriptions contain redundant implementation details (e.g., credential rules, API endpoints).
- Optional parameters like 'agent_secret' and 'workspace_key' are inconsistently required across tools.
- Lack of explicit error code documentation beyond 'ledger_api_docs' mention.
ledger_track— Ambiguous 'agent_secret' vs 'workspace_key' requirements for initial agent setup.ledger_set_budget— Unclear distinction between 'daily_cents' and 'monthly_cents' usage in budget enforcement.ledger_report— Redundant credential rules description duplicates GET /v1/report documentation.
Verdict
Event narrative
Sign up free to generateSchema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 185ms → warm 179ms (penalty 6ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
ledger_trackRecord a spend entry for an AI agent on any payment rail, with optional token counts. Claiming a brand-new agent_id requires your workspace_key (get one via x402 at POST /v1/billing/x402 — no human, no login — or at /start). That first call mints an agent_secret and returns it in the response — save it, every later call for that same agent_id must pass it back (no workspace_key needed again) or the write is rejected. Amounts are capped at $100,000/entry and must be >= 0. If a budget is set for this agent, an entry that would cross the monthly/daily cap is blocked, not just logged. Include tokens_in/tokens_out + model on every LLM call so token burn shows up in the /v1/tokens report.
agent_idstringrequiredrailstringrequiredamount_centsintegerrequiredservicestringrequiredtokens_inintegertokens_outintegermodelstringagent_secretstringworkspace_keystring
ledger_set_budgetSet spending caps for an agent. Warns at 80%, blocks spend when exceeded — enforced: a ledger_track call that would cross the cap is rejected. Dollar caps (monthly_cents/daily_cents) and token caps (monthly_tokens/ daily_tokens) are independent dimensions: dollar caps only cover non-"tokens" rails, token caps only cover rail="tokens" bookkeeping rows (tokens_in/tokens_out). Set both if the agent uses both. Monthly cap is required; the rest are optional (0 = no limit). Overwrites any existing budget for the agent. Claiming a brand-new agent_id requires your workspace_key; that first call mints an agent_secret (returned once — save it); later calls for that agent_id must pass the agent_secret back (no workspace_key needed again).
agent_idstringrequiredmonthly_centsintegerrequireddaily_centsintegermonthly_tokensintegerdaily_tokensintegeragent_secretstringworkspace_keystring
ledger_reportSpend report for an agent over a rolling window. Returns total spend, breakdown by rail and by service, budget status (ok/warning/exceeded), detected anomalies, and entry count. Requires a credential: either the agent's own agent_secret or its workspace's workspace_key (same rule as GET /v1/report).
agent_idstringrequireddaysintegeragent_secretstringworkspace_keystring
ledger_alertsAlert history for an agent: budget warnings (80% threshold) and spending spikes. Requires a credential: either the agent's own agent_secret or its workspace's workspace_key (same rule as GET /v1/alerts).
agent_idstringrequiredagent_secretstringworkspace_keystring
ledger_list_agentsOwner-only: full cross-tenant listing of every agent ever claimed on this instance, with totals. Requires the operator's admin_secret — this is a portfolio-wide view, not a per-agent report (use ledger_report for that — it requires that agent's agent_secret or its workspace_key).
admin_secretstring
ledger_api_docsSelf-serve documentation for AgentLedger — quickstart, MCP tools, REST endpoints, budget caps, error codes, and idempotency usage, as markdown.
topicstring
ledger_examplesComplete, runnable Python recipe for a common AgentLedger integration pattern.
patternstringrequired
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Dual-era
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[](https://mcpmetrics.io/servers/io-github-entradox-agent-ledger)<a href="https://mcpmetrics.io/servers/io-github-entradox-agent-ledger"><img src="https://mcpmetrics.io/badge/io.github.entradox/agent-ledger/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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