FIL-B
FIL-B is a five-person public goods developer experience team spun out of Protocol Labs that helps Web3 builders design and implement on-chain solutions on Filecoin's decentralized storage protocol, with deep expertise in FVM and Interplanetary Consensus.
- Company typePrivate
- Founded-
- HeadquartersBrooklyn, United States
- Headcount1–10
- GTM typeB2B
- OfferingServices
What FIL-B does
FIL-B (FIL-Builders) is a public goods developer experience team that supports builders in designing, unblocking, and implementing on-chain solutions on Filecoin's decentralized storage protocol. The team was spun out of former developer experience teams at Protocol Labs, the R&D lab behind Filecoin, and is part of the Protocol Labs Network's public goods layer. Its core technical focus spans the Filecoin Virtual Machine (FVM) and Interplanetary Consensus (IPC), reflecting direct prior involvement in launching these on-chain features for the Filecoin ecosystem.
The team consists of five members—a Team Lead, Developer Advocate, Solutions Architect, Technical Lead, and DX Engineer—who engage the developer community through Discord, Medium, and X/Twitter (@filbuilders). FIL-B does not offer commercial products, does not publicly disclose pricing, and does not list named customers. Its go-to-market is community-led and targets Web3 developers and builders as a horizontal persona rather than enterprise accounts. No API, SDK, integrations, certifications, or product launches are disclosed.
Revenue mechanics are not publicly documented; the organization is positioned as a public goods unit within the Protocol Labs Network, implying funding via Protocol Labs or ecosystem grants rather than direct customer billing. No external venture funding rounds, customer logos, or revenue figures appear in the available sources, and the entity has no disclosed subsidiaries, M&A activity, or operating geographies.
FIL-B firmographics
Firmographics- Name
- FIL-B
- Website
- https://fil.builders
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- FIL-B is a five-person public goods developer experience team spun out of Protocol Labs that helps Web3 builders design and implement on-chain solutions on Filecoin's decentralized storage protocol, with deep expertise in FVM and Interplanetary Consensus.
- Ownership category
- akta.pro rank
Where FIL-B is headquartered
LocationHeadquarters
- HQ city
- Brooklyn
- HQ country
- United States
- HQ region
- North America
Markets served
FIL-B business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Public Goods Developer Services: As a public goods developer experience team, FIL-B provides developer tools, resources, and support to help builders implement on-chain solutions on Filecoin. The specific revenue model is not disclosed in available sources.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
FIL-B product offering
Product offeringCore offering
FIL-B is a public goods developer experience team that helps builders design, unblock, and implement on-chain solutions on Filecoin's decentralized storage protocol. The team provides developer advocacy, solutions architecture, and technical guidance to the Filecoin ecosystem, and was spun out of Protocol Labs' former developer experience teams after helping launch on-chain features such as the Filecoin Virtual Machine (FVM) and Interplanetary Consensus (IPC).
Product overview
FIL-B (FIL-Builders) is a public goods developer experience team that does not offer commercial products. The organization is committed to helping builders design, unblock, and implement on-chain solutions on Filecoin's decentralized storage protocol. FIL-B was spun out of former developer experience teams from Protocol Labs and helped launch on-chain features such as Filecoin Virtual Machine and Interplanetary Consensus for the Filecoin ecosystem.
Differentiator
Problem solved
Functional benefit
Companies that use FIL-B
Customer profileSegments1 record
Ideal customer profiles1 record
FIL-B technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
FIL-B partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Protocol LabscoreFIL-B is spun out of former developer experience teams from Protocol Labs, the R&D lab that launched Filecoin. FIL-B is proudly part of the public goods layer of the Protocol Labs Network.
- FilecoincoreFIL-B is committed to helping builders design, unblock, and implement on-chain solutions on Filecoin's decentralized storage protocol. They helped launch key features including Filecoin Virtual Machine (FVM) and Interplanetary Consensus (IPC).
Scale indicators1 record
Recent moves4 records
Expansion highlights4 records
FIL-B competitors and assessment
Company assessmentBroad incumbents
- Tatum: A unified Web3 development platform providing APIs and tooling across 60+ blockchains. Comparable as a multi-chain developer infrastructure alternative to a single-protocol DX team like FIL-B.
- Alchemy: A leading Web3 developer platform offering APIs, RPC nodes, and enhanced developer tools across major chains. Overlaps with FIL-B as a developer experience provider for protocol builders, at much larger scale.
- ChainSafe Systems: A Web3 R&D and infrastructure firm contributing core protocol engineering to multiple chains including Filecoin and Ethereum. Comparable as a multi-protocol developer tooling contributor that overlaps with FIL-B's protocol-development expertise.
- Polygon Labs Developer Relations: Polygon Labs operates developer relations, grants, and builder-support programs for the Polygon ecosystem. Comparable to FIL-B as a large-scale, protocol-aligned DX organization supporting ecosystem builders.
- thirdweb: A Web3 development platform providing SDKs, smart contracts, and developer tooling across many chains. Represents a commercial, scalable alternative to a public goods DX team like FIL-B for builders.
Direct peers
- BuidlGuidl: A community-driven Ethereum developer support collective that provides grants, mentorship, and onboarding to builders — directly analogous to FIL-B's role as a protocol-specific public goods DX team for Ethereum.
- Developer DAO: A Web3 developer community and DAO that funds, mentors, and supports builders across the Web3 stack. Closely mirrors FIL-B's positioning as a builder-focused support organization within a specific ecosystem context.
Emerging players
- Figment: A Web3 infrastructure provider offering node services and developer support across multiple proof-of-stake networks. Partially overlaps with FIL-B in providing protocol-specific developer enablement, though commercially focused.
- Optimism Foundation Developer Experience: Optimism's public-goods-funded developer relations and tooling initiatives via the OP Stack ecosystem. Conceptually analogous to FIL-B as a protocol-aligned DX function operating in a public goods funding model.
Others
- Web3 Foundation Grants Program: The funding arm of the Web3 Foundation (Polkadot ecosystem) that operates a grants program supporting ecosystem builders. Comparable to FIL-B as a sibling public-goods-style developer support function within a competing decentralized ecosystem.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks6 records
Key highlights5 records
Customer concentration
FIL-B social profiles
Digital presenceFIL-B financial estimates
Financial estimateRevenue estimate
Valuation estimate
FIL-B leadership team
Management profileNumber of profiles
Profiles5 records
FIL-B funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
FIL-B M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about FIL-B
What does FIL-B do?
FIL-B is a public goods developer experience team that helps builders design, unblock, and implement on-chain solutions on Filecoin's decentralized storage protocol. The team provides developer advocacy, solutions architecture, and technical guidance to the Filecoin ecosystem, and was spun out of Protocol Labs' former developer experience teams after helping launch on-chain features such as the Filecoin Virtual Machine (FVM) and Interplanetary Consensus (IPC).
Is FIL-B a public or private company?
FIL-B is a private company. It is classified as corporate owned and is currently operating.
When was FIL-B founded?
FIL-B was founded in -1. It employs 1 to 10 people.
Where is FIL-B based?
FIL-B is headquartered in Brooklyn, United States, in the North America region.
How does FIL-B make money?
One revenue line is on record: public Goods Developer Services.
Who are FIL-B's main competitors?
Broad incumbents on record are Tatum, Alchemy, ChainSafe Systems, Polygon Labs Developer Relations and thirdweb. Direct peers are BuidlGuidl and Developer DAO. Emerging players are Figment and Optimism Foundation Developer Experience. Web3 Foundation Grants Program is listed as an others.
Does FIL-B have an API?
No public API is recorded for FIL-B.