Fiberplane

Fiberplane is an Amsterdam-founded developer-tools company, backed by Northzone, building agent-native tooling for the "software factory" era of AI coding agents. Its current lineup centers on fp (fp.dev), a local-first CLI for tracking work when coding with AI agents such as Claude Code; EV, an AI-powered code-review tool that turns diffs into narratives; and DRIFT, an open-source tool that binds specifications to code and lints for drift before stale docs reach production. Fiberplane also maintains a Model Context Protocol (MCP) toolchain — mcp-lite (a small, fetch-first SDK for building MCP servers), an MCP Gateway for intercepting and debugging MCP servers, and a Console for reviewing and evaluating MCP servers. Earlier work includes the Hono-native API Playground/Studio, the HONC.dev stack (create-honc-app), @fiberplane/agents for introspecting Cloudflare Agents SDK apps, and collaborative observability notebooks for incident response. The company ships its libraries on npm under the @fiberplane scope and distributes its CLI binaries via a Homebrew tap and an install script.

Fiberplane is profiled on the APIs.io network. Tagged areas include Company, Enterprise, Developer Tools, Agents, and MCP.

Fiberplane’s developer surface includes documentation, getting-started guide, engineering blog, support, CLI, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.5/100 emerging ▬ flat Agent 0/100 human only Front door AI 3/6 light Heartbeat 32/100 going silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company Enterprise Developer Tools Agents MCP Developer Experience CLI Observability TypeScriptHonoAI Coding

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 18.5/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 7.3 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 4.7 / 9

Regulatory Posture 2.1 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 21.1 — up to +15.8 composite points
Operational Transparency scores 2.6 — up to +12.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/fiberplane/apis.yml: open an issue on github.com/api-evangelist/fiberplane to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Agent Skills (SKILL.md packages)	distribution	9.6 (thin)	-	1
IDE Extension Marketplaces (JetBrains, VS Code, Open VSX, Docker Verified Publishers, PyPI orgs)	distribution	9.6 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fiberplane Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Source (apis.yml)

aid: fiberplane
name: Fiberplane
description: Fiberplane is an Amsterdam-founded developer-tools company, backed by Northzone, building agent-native tooling
  for the "software factory" era of AI coding agents. Its current lineup centers on fp (fp.dev), a local-first CLI for tracking
  work when coding with AI agents such as Claude Code; EV, an AI-powered code-review tool that turns diffs into narratives;
  and DRIFT, an open-source tool that binds specifications to code and lints for drift before stale docs reach production.
  Fiberplane also maintains a Model Context Protocol (MCP) toolchain — mcp-lite (a small, fetch-first SDK for building MCP
  servers), an MCP Gateway for intercepting and debugging MCP servers, and a Console for reviewing and evaluating MCP servers.
  Earlier work includes the Hono-native API Playground/Studio, the HONC.dev stack (create-honc-app), @fiberplane/agents for
  introspecting Cloudflare Agents SDK apps, and collaborative observability notebooks for incident response. The company ships
  its libraries on npm under the @fiberplane scope and distributes its CLI binaries via a Homebrew tap and an install script.
url: https://raw.githubusercontent.com/api-evangelist/fiberplane/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- northzone
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://avatars.githubusercontent.com/u/61152955?s=200&v=4
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Enterprise
- Developer Tools
- Agents
- MCP
- Developer Experience
- CLI
- Observability
- TypeScript
- Hono
- AI Coding
tags_raw:
- Company
- Enterprise
- Developer Tools
- Agents
- MCP
- Model Context Protocol
- Developer Experience
- CLI
- Observability
- TypeScript
- Hono
- AI Coding
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://blog.fiberplane.com/blog/rss.xml
  type: BlogRSS
- type: Website
  url: https://fiberplane.com
- type: Documentation
  url: https://docs.fiberplane.com
- type: GettingStarted
  url: https://fp.dev
- type: Blog
  url: https://blog.fiberplane.com/blog/
- type: GitHubOrganization
  url: https://github.com/fiberplane
- type: Support
  url: https://discord.com/invite/9xHGYRgsFV
- type: TermsOfService
  url: https://fiberplane.com/terms
- type: PrivacyPolicy
  url: https://fiberplane.com/privacy
- type: LLMsTxt
  url: llms/fiberplane-llms.txt
- type: Packages
  url: packages/fiberplane-packages.yml
- type: SDKs
  url: packages/fiberplane-packages.yml
- type: CLI
  url: cli/fiberplane-cli.yml
- type: DomainSecurity
  url: security/fiberplane-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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Every operation they expose

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How their score was established

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