AI-native ledgers

Campfire

Campfire is a cloud ERP for venture-backed and mid-market finance teams, with its own accounting model and an agent called Ember that works inside the ledger.

campfire.ai · founded 2023 (Y Combinator; per ERP Scorecard, not confirmed on Campfire's own site) · San Francisco, California, US; London office opened 2026 · researched 2026-10-10

Scope: Campfire replaces the general ledger and the tools around it: multi-entity core accounting, revenue recognition (ASC 606), close management, reporting and forecasting, with about 100 native integrations and bank feeds through Plaid. Its agent, Ember, categorises, reconciles, books accruals and drafts invoices inside Campfire. It does not cover inventory, manufacturing, order management or project accounting, and it does not sit beside another ledger: you move your books in.
Backing: More than $100M raised: $35M Series A led by Accel (reported July 2025) and $65M Series B co-led by Accel and Ribbit (15 October 2025), with Foundation Capital and Y Combinator; private, venture-backed (Campfire Software, Inc.)
Serves: smb, mid-market, accountants
Covers: ledger, bank, invoicing, close, reporting, integration
To ownpurse: Neighbour. Campfire asks a company to move its books into Campfire's cloud and lets its own agent run them; ownpurse leaves the books where they are and keeps the owner's copy. Its customers are venture-backed mid-market finance teams, not ownpurse's people and small businesses. Its API is complete enough that Campfire could become an ownpurse source.

What it is

Campfire is a cloud ERP for finance teams at venture-backed and mid-market companies. It sells itself as a modern replacement for NetSuite, SAP and Oracle: a multi-entity general ledger, revenue recognition, close management, reporting and forecasting, with an agent called Ember working inside it (Campfire). It claims a 3 to 10 day faster close, 180+ currencies, unlimited entities and 100+ native integrations. It does not handle inventory, manufacturing or project accounting (ERP Scorecard).

How it works

You move your books into Campfire. Bank feeds arrive through Plaid, and CRM, billing and spend data through native integrations. In October 2025 Campfire announced its own “Large Accounting Model”, trained on accounting data, with a vendor-claimed 95% accuracy on reconciliations and variance detection (PR Newswire). Ember Agents, in beta from 12 March 2026, run all the time on transaction matching, AP and AR, anomaly detection and accruals, and on a schedule for flux analysis and close prep. Confidence thresholds set what an agent does on its own and what it flags, and you can review actions before they post (press release).

Data and access

The API is public and large: about 396 documentation pages across cash management, core accounting, AP, AR, bank reconciliation, revenue recognition and financial statements, with an OpenAPI spec and webhooks (docs index). Keys are self-serve, sent as Authorization: Token, and carry a role: admin, clerk (can post draft entries) or view only (quickstart). OAuth apps use scopes like invoices:read with tiers Read, Draft, Write and Approve, where Approve is granted only on its own. Support has to switch OAuth apps on, and Campfire reviews any app published beyond your workspace (OAuth apps). Rate limits and bulk export are not documented. Pricing is by quote; there was no pricing page on 10 October 2026.

Agents

Campfire works with agents in both directions. Outward, an official MCP server at api.meetcampfire.com/mcp exposes 12 tools covering accounts, transactions, entities, vendors, the three statements, budgets, contracts and aging. It is documented for Cursor, Claude Desktop and VS Code, and the docs warn that the token “provides full access to your Campfire data” (AI integration). Inward, the May 2026 MCP store lets Ember call Ramp, HubSpot, Salesforce, Stripe or any hosted MCP server, then post accruals, reconcile payments and draft invoices in Campfire. Invoices wait for a person to approve them, and every action is logged and attributed to Ember (Campfire blog).

Customers

Named customers include Replit, PostHog, Decagon, Klarity, Heidi Health, CloudZero and Advisor360, and Campfire claimed 10x year-to-date revenue growth in October 2025. ERP Scorecard counted roughly two dozen G2 reviews in mid-2026. It says reviewers praise the interface, automatic FX booking and support, and complain about the narrow tech-company fit, features still being built and opaque pricing. It names the best fit as companies with about $5M to $250M in revenue.

History

John Glasgow and Fernando San Martin founded Campfire in 2023 through Y Combinator. It launched publicly in late 2024, raised a $35M Series A led by Accel in July 2025 (Cyber News Centre), and raised a $65M Series B co-led by Accel and Ribbit on 15 October 2025, for more than $100M in total. It opened a London office in 2026.

For ownpurse

Campfire is the replacement-ledger thesis done well: one cloud, one model, one agent, with your books inside. It leaves out the pole ownpurse takes, where the owner holds the record and the books stay in Xero or wherever they already are. Two things are worth taking. One is the scope ladder, where Approve is a separate grant and not the top of Write. The other is the clerk role that can only post drafts. Both match ownpurse’s split between drafting a package and a person approving it. What to avoid is one all-access token handed to any MCP client, and confidence thresholds as the only gate on writes nobody watches. Campfire is a neighbour, and a possible future source, but not a competitor for the people and small businesses ownpurse serves.

Data and access

Public API: Yes. REST, JSON; base https://api.meetcampfire.com; OpenAPI spec and llms.txt published; webhooks
Auth: API key in 'Authorization: Token' header, created per API user under Settings > API Keys, with roles (admin, clerk can post draft entries, view only = GET only); OAuth 2.0 apps with scopes of the form resource:tier (Read, Draft, Write, Approve)
Limits: Rate limits not documented as of 2026-10-10
What access costs: No separate API fee found; needs an active Campfire account
Export: No dedicated bulk export documented; list endpoints across cash, core accounting, AP, AR, revenue and financial statements, plus file download URLs and PDFs
Notes: Docs list about 396 pages: Revenue Recognition (89), Core Accounting (82), Company Objects (67), AP (41), AR (36). Apideck lists Campfire as a beta connector in its unified accounting API.

Price

Model: Quote-based annual SaaS subscription
Entry: Not published; campfire.ai/pricing returned 404 on 2026-10-10. ERP Scorecard estimates $20K to $40K a year for software (low confidence, peer-anchored)
Top: Not published
Notes: Implementation priced separately per ERP Scorecard (estimated mid-four to low-five figures). Site offers a savings calculator and demos only.

Agents

MCP: official
AI features: Proprietary 'Large Accounting Model' (LAM, announced October 2025, vendor-claimed 95% accuracy on reconciliations and variance detection); Ember assistant for questions; Ember Agents (beta, March 2026) for transaction matching, AP/AR, anomaly detection, accruals, flux analysis and close prep; MCP store (May 2026) letting Ember reach Ramp, HubSpot, Salesforce, Stripe and any hosted MCP server
Agent writes: Ember writes inside Campfire: posts accrual journal entries, reconciles Stripe payments, drafts invoices. The outward MCP server at api.meetcampfire.com/mcp exposes 12 tools (chart of accounts, transactions, entities, vendors, reports, budgets, contracts, aging) described as retrieve, search and generate; docs do not say whether any write.
Approval: Confidence thresholds decide what Ember does on its own versus flags; users can review actions before they post; invoices are drafted by Ember and approved by a person. API roles and OAuth scope tiers separate Draft, Write and Approve.
Notes: MCP docs warn that the API token gives full access to your Campfire data. Campfire says data is not sent to an external AI for processing.

Integration and customers

Connects to: About 100 native integrations (Salesforce, HubSpot, Stripe, Ramp, Brex, Rho, Rippling, DOSS, Cin7 and others); bank feeds via Plaid; any hosted MCP server inside Ember
Notes: Migration tooling advertises a '15-minute journal migration' (vendor claim, partial scope). Integrations are inbound to Campfire's ledger.
Scale: Vendor-claimed 10x year-to-date revenue growth (October 2025); about 40 employees as of late 2025 (ERP Scorecard); named customers include Replit, PostHog, Decagon, Heidi Health, Klarity, CloudZero, Advisor360, Framer, Warp, TwelveLabs, and LimaOne (an MFA Financial company)
Ratings: Roughly two dozen G2 reviews as of mid-2026 per ERP Scorecard; average score not confirmed
What customers say: Praise (via ERP Scorecard's review digest): modern interface, value of the modules, automatic FX gain and loss booking, responsive support. Complaints: fits tech companies best, features still being built, a learning curve, opaque pricing.

Timeline

2023
Founded by John Glasgow (ex-Invoice2go) and Fernando San Martin (ex-Trovata), through Y Combinator (per ERP Scorecard)
About October 2024
Public launch, roughly nine months before the Series A (per Cyber News Centre)
July 2025
$35M Series A led by Accel
2025-10-15
$65M Series B co-led by Accel and Ribbit; total over $100M; announces its Large Accounting Model
2026-03-12
Ember Agents launched in beta for existing customers
2026-05-14
Connectors and MCP store for Ember (Ramp, HubSpot, Salesforce, Stripe, any hosted MCP server)
2026
London office, first outside the US (per ERP Scorecard)

Borrow and avoid

Borrow: OAuth scope tiers of Read, Draft, Write and Approve, where Approve is granted only on its own: the same separation ownpurse makes between drafting a package and a person approving it. An API role ('clerk') that can post only drafts. Every agent action attributed to the agent in the audit trail.
Avoid: One token that 'provides full access to your Campfire data' for an MCP client; confidence thresholds as the main gate on unattended writes; accuracy figures from a vendor's own benchmark with no independent check.

Sources

Not confirmed against a primary source

Founding year 2023 and co-founder Fernando San Martin come from ERP Scorecard, not Campfire's own pages
Exact Series A date: reports say June or July 2025 (12 weeks before the 15 Oct 2025 Series B suggests late July)
Total funding: sources say 'more than $100M' or $103.5M
Pricing: ERP Scorecard's $20K-$40K/yr software and $30K-$55K year-one estimates are peer-anchored and low confidence
G2 average rating and exact review count not confirmed (G2 blocked fetch)
Whether any Campfire MCP server tool writes; one third-party site calls it read-only
About 40 employees as of late 2025 (ERP Scorecard only)
London office in 2026 and packaged Ember close skills in July 2026 come from third-party reviews
SOC 2 status not confirmed on the home page
Reddit and Trustpilot sentiment not checked: web search budget ran out during this pass

On the spectrum

0 to 4. The grey tick is ownpurse.

Custody: 1
Where it runs: 0
History: 2
Openness: 2
Breadth: 3
Autonomy: 3
Agent-ready: 3
Easy to connect: 3
Market: 3

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ownpurse is not affiliated with Campfire or any company named here. Names are their owners' trademarks. Figures come from the company's own pages and the press, as linked, as of 2026-10-10; scores are our reading of them against the definitions in the landscape. This is not legal or financial advice.