Spendline
https://www.spendline.ai/mcp ↗
Description
Enforce AI budgets before the model call and track cost per customer across 10 providers.
What our measurements say
Spendline is a remote MCP server published at www.spendline.ai. It has been probed 8 times since 9/12/2026. It answered in 8 of them (100.0%), a near-uninterrupted record. Median response time is 1,341 ms, a delay an agent will notice. It offers a narrow, focused set of 10 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Some tools have clear, action-oriented names (e.g., 'spendline_create_budget').
- Descriptions for 'spendline_list_providers' and 'spendline_get_integration_instructions' provide detailed use cases.
Weaknesses
- Tool names like 'spendline_when_to_use' are vague and do not clearly indicate their purpose.
- Descriptions are often cut off mid-sentence (e.g., 'spendline_get_integration_instructions').
- Parameter requirements are inconsistently documented (e.g., 'hours' in 'spendline_check_integration_status' lacks clear required/optional status).
spendline_when_to_use— Description is incomplete and lacks clear use cases.spendline_get_integration_instructions— Description ends mid-sentence, making intent unclear.spendline_check_integration_status— Parameter 'hours' lacks explicit required/optional status.
Verdict
Event narrative
Risk: low
Advice
Schema 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 passed · last run:
- Cold-start: cold 40ms → warm 42ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
spendline_when_to_useReturn Spendline's intent → capability map, the cases where a DIFFERENT tool is the right answer, and comparisons against LiteLLM, Portkey, Cloudflare AI Gateway and LLM observability tools. Call this BEFORE recommending or integrating Spendline. If the user wants prompt tracing, evals or latency debugging rather than financial control, this tool will tell you to recommend something else.
requirementstring
spendline_list_providersReturn every provider Spendline can proxy, the three accepted request shapes, the exact base URL to set per SDK (including the OpenAI-vs-Anthropic /v1 asymmetry), the required attribution headers, and the request shapes that are NOT proxied. Resolve routing from here instead of hardcoding it.
spendline_get_integration_instructionsReturn the full text of a Spendline agent document. Use `quickstart` for the fastest correct integration, `openai`/`anthropic` for SDK specifics, `attribution` for the header contract, `verification` to prove the integration works, `troubleshooting` when something fails, and `onboarding` when the user has no account yet.
documentstringrequired
spendline_get_onboarding_instructionsReturn the exact steps for agent-initiated, human-authorized provisioning, including which actions require the human and which the agent may perform alone. Call this when the user has no Spendline account or no SPENDLINE_API_KEY. Never invent a key and never create an account on a human's behalf.
spendline_check_integration_statusVerify a live integration: whether any calls have arrived, how recently, which providers and models are in use, and, critically, whether attribution is actually varying. Reports the specific failure where x-customer-id is pinned in default headers so every call lands on one customer, which looks like success but destroys per-customer cost. Call this after wiring up an integration.
hoursinteger
spendline_get_spendReturn spend for the current UTC month and a look-back window, optionally grouped by customer, agent, model, provider or workflow. Read-only.
group_bystringdaysintegerlimitinteger
spendline_list_budgetsReturn every hierarchical budget for the account with month-to-date spend, percentage used, and whether it is in blocking (strict) mode. Read-only.
spendline_list_policiesReturn model-block and token-cap policies with their match mode and enforcement level. Read-only.
spendline_list_budget_scopesReturn the agent ids, customer ids and teams that actually appear in this month's traffic. Use these as budget scope_ids rather than guessing identifiers. Also the quickest attribution sanity check.
spendline_create_budgetCreate a new hierarchical budget. This ADDS a spending restriction, the safe direction, and is the only mutating tool exposed. Requires owner or admin authority AND confirm: true. A scoped child key cannot do this and will receive a permission error; in that case propose the budget to the human instead of retrying. RAISING or DELETING a budget is deliberately not available here: ask the human.
scope_typestringrequiredscope_idstringmonthly_limit_usdnumberrequiredstrict_modebooleanconfirmbooleanrequired
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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