Freeagent (oxygenbubbles) MCP Server
@oxygenbubbles/freeagent-mcp-server
npm
v3.2.0
Published by @oxygenbubbles — no publish provenance, so origin is unverified, but the source is public: the repository link below is self-declared yet readable, so you can inspect the code before adopting it.
MCP server for FreeAgent accounting — bank reconciliation, expenses, mileage claims and receipt management
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 0 = 100. What the published surface and source actually contain:
The deterministic scan raised no scored threat in the surface it inspected — the threat score stayed at 100. Capability observations and advisory notes are recorded but never lower it.
2. Client adoption risk — 100 − 7 = 93. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −6 | capability blast radius (high) — client exposure if the model is manipulated |
| −1 | publisher verification (public source) — no provenance, but the source is public and inspectable |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 2
high Shell/command execution in server code (dist/auth.js)MTC-SRC-002
In the server's implementation (`dist/auth.js:10`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: ; import { exec } from "child_process"; import { readFileSync, writeFileSync, existsSync } from "fs"; import { resolve a
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/auth.js
medium Hardcoded egress to an external endpoint (dist/services/distance.js)MTC-SRC-003
In the server's implementation (`dist/services/distance.js:30`): A hardcoded outbound call to a fixed external host inside server code is a classic exfiltration/telemetry channel — especially paired with reads of local data. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: const response = await axios.get("https://api.openrouteservice.org/geocode/search", { params: { api_key: apiKey
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/services/distance.js
Tools 42
Each tool and what it can reach — statically extracted from the published source.
freeagent_get_billingests untrusted inputfreeagent_get_invoiceingests untrusted inputfreeagent_aged_creditorsno sensitive capabilityfreeagent_aged_debtorsno sensitive capabilityfreeagent_company_summaryno sensitive capabilityfreeagent_create_billno sensitive capabilityfreeagent_create_contactno sensitive capabilityfreeagent_create_expenseno sensitive capabilityfreeagent_create_invoiceno sensitive capabilityfreeagent_create_mileage_expenseno sensitive capability
Show 32 more tools ↓
freeagent_create_projectno sensitive capabilityfreeagent_create_taskno sensitive capabilityfreeagent_create_timeslipno sensitive capabilityfreeagent_delete_billno sensitive capabilityfreeagent_delete_contactno sensitive capabilityfreeagent_delete_expenseno sensitive capabilityfreeagent_delete_invoiceno sensitive capabilityfreeagent_delete_projectno sensitive capabilityfreeagent_delete_taskno sensitive capabilityfreeagent_delete_timeslipno sensitive capabilityfreeagent_explain_transactionno sensitive capabilityfreeagent_list_bank_accountsno sensitive capabilityfreeagent_list_billsno sensitive capabilityfreeagent_list_categoriesno sensitive capabilityfreeagent_list_contactsno sensitive capabilityfreeagent_list_expensesno sensitive capabilityfreeagent_list_invoicesno sensitive capabilityfreeagent_list_projectsno sensitive capabilityfreeagent_list_tasksno sensitive capabilityfreeagent_list_timeslipsno sensitive capabilityfreeagent_list_transactionsno sensitive capabilityfreeagent_profit_and_lossno sensitive capabilityfreeagent_tax_timelineno sensitive capabilityfreeagent_trial_balanceno sensitive capabilityfreeagent_update_billno sensitive capabilityfreeagent_update_contactno sensitive capabilityfreeagent_update_expenseno sensitive capabilityfreeagent_update_invoiceno sensitive capabilityfreeagent_update_invoice_statusno sensitive capabilityfreeagent_update_projectno sensitive capabilityfreeagent_update_taskno sensitive capabilityfreeagent_update_timeslipno sensitive capability
What this scan could not see
- Tools were statically extracted from the published source (42 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Versions 4
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v3.2.0 latest |
A 93/100 | 2 | 1.13.0 | 2026-09-07 |
v3.0.1 |
A 93/100 | 2 | 1.13.0 | 2026-08-27 |
v3.0.0 |
A 93/100 | 2 | 1.12.1 | 2026-08-14 |
v2.1.0 |
A 93/100 | 2 | 1.12.1 | 2026-08-06 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
npx mcptrustchecker scan @oxygenbubbles/freeagent-mcp-server --onlineOther implementations of Freeagent 3
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