Files
PaperClipAI/doc/connections
DottaandPaperclip b41ccf097f fix(apps): configure MCP aggregators from inline task cards (#13879)
## Thinking Path

> - Paperclip lets people manage AI agents and their work.
> - Agents request connections through cards in task threads.
> - MCP aggregators need provider-specific URLs and authentication.
> - The task dialog used the generic setup form and omitted these
fields.
> - This pull request uses the same provider setup controller in tasks
and Apps.
> - Users can configure a connection without leaving the task.

## Linked Issues or Issue Description

Related: #13755, #13855.

**What happened?**

An inline Executor request opened a very wide dialog with an empty
credential step. Connect failed because the MCP URL was missing. The
other aggregator cards also bypassed their provider setup.

**Expected behavior**

Each card shows its provider instructions, URL field, and authentication
options in a bounded dialog. Completing setup grants access only to the
requesting agent.

**Steps to reproduce**

1. Enable experimental MCP aggregators.
2. Have an agent request Zapier, Arcade, Composio, or Executor from a
task.
3. Open the card and continue past Access.

## What Changed

- Route page and task setup through the same provider controller.
- Bound the task dialog width and preserve the requesting agent's access
scope.
- Support existing accounts, saved drafts, URL/token setup, and
task-bound OAuth.
- Keep a sign-in link available when the browser cannot open a popup.
Verify completion through the existing durable callback path.
- Add inline Access, configuration, and narrow Storybooks for all four
providers.
- Document the shared setup requirement and correct Executor's URL
instructions.

## Verification

- Focused Vitest selection: 24 passed. Covers all four inline forms,
requester access, existing accounts, saved drafts, OAuth retry, callback
validation, popup cleanup, and generic reconnect endpoint preservation.
- UI typecheck, UI build, design-token gates, and Storybook build
passed.
- Live local browser: new Executor, Arcade, and Composio connections
completed provider consent from task cards. Each appeared Connected with
the requester selected.
- Real Test calls returned Executor output `4`, an Arcade public GitHub
star count, and Composio tool-discovery results. An ungranted agent was
denied access. Real Paperclip process-agent runs discovered each
provider catalog with only the requester’s connection installed.
- Deployed implementation commit `5d722e89c` to the isolated staging
tenant. The original failing Executor card now completes, discovers
seven actions, limits access to its requesting agent, and resumes that
agent. Its continuation completed real Executor calls and the provider
resume flow, then returned an upstream Airtable authorization link. A
real staging Test call returned `4` in 1.5 seconds. Later PR commits add
regression coverage and popup-unmount cleanup.
- Zapier fresh-token browser test remains pending a provider clipboard
handoff. Its URL and token flow passes focused tests.
- Latest-head CI (`d14f4c73c`): 53 checks passed; optional Storybook
deployment and visual regression jobs skipped. Greptile 5/5, both review
threads resolved. Canceled runners and unrelated chat timeouts passed
the single retry on unchanged code.
- The full local test suite was not run, as requested by the maintainer.
CI runs the repository gates.

## Risks

- OAuth popup behavior differs by browser. The explicit sign-in link and
durable server completion checks provide recovery.
- Saved task drafts store only a connection ID in browser storage.
Credentials remain in the existing server vault.
- No database or server protocol changes.

## Model Used

OpenAI GPT-6 (`gpt-6-astra`) through Codex, with reasoning, code
execution, and browser tools. The exact context-window size is not
exposed in this session.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` OR (b) described the issue in-PR following the relevant issue
template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>
2026-09-23 09:19:18 -05:00
..

Apps, Connections, and Integrations

Audience: internal engineers and product contributors working on integrations.

Start here when adding a provider: Connection authoring runbook. It is the canonical agent tutorial from provider research and protocol classification through manifest generation, branding, secrets, deterministic tests, real-account proof, and PR submission.

Runtime authentication: AI Connections.

Provider notes: Google Workspace, Gmail, PostHog, AgentMail, and iMessage Photon. Optional credential custody: Vercel Connect.

Post-read action: classify a new integration request, pick the right Paperclip layer to change, and avoid creating a parallel connection framework.

Decision Record

Board decisions from PAP-13211 make the Apps v2 substrate on the PAP-10341 branch canonical:

  • D1: Apps v2 is the substrate. The active model is tool_applications, tool_connections, catalog entries, profiles, policy rules, action requests, gateway sessions, audit events, and runtime slots. Connections v1 is retired as an implementation path.
  • D2: one credential authority per connection, brokered projections. The default is the Paperclip instance vault: durable third-party credentials live in company_secrets as secret refs. A reviewed remote MCP method may instead opt in to Vercel Connect, in which case Vercel is the durable credential authority and Paperclip stores only the connector reference and redacted grant metadata. A connection must never mix those two sources. Adapter config, plugin config, harness credential files, and run environments may receive only brokered or projected credentials.
  • D3: the vocabulary and three-door IA are product law. The default product doors are Apps, Connections, and Review. Protocol and operator-depth concepts live behind Developer or Advanced surfaces.
  • D4: unification lands on PAP-10341. Pages, CircleBack-style harness MCP OAuth, provider gallery work, and plugin-provided integrations converge on this branch instead of spawning new integration substrates.
  • D5: inbound stays thin. External clients that call Paperclip use scoped Paperclip tokens and existing profiles/rules. They do not get a separate permission model.

Canonical Object Model

Use connection as the unifying noun. A connection is four things:

  1. A stored credential reference.
  2. A capability catalog.
  3. A governance layer.
  4. An audit trail.

Everything else is an axis on that object:

Axis Values It answers
Direction outbound, inbound Who is the client?
Transport MCP, native REST/OpenAPI, OAuth app install, webhook How do bytes move?
Auth mode OAuth, API key/PAT, app installation, none What does the secret represent?
Credential owner company, user, run Whose identity acts?
Packaging catalog entry, plugin, skill How does it ship?

MCP is a transport, not a product category. "Install the Discord app", "connect Google Drive", and "add an MCP endpoint" all produce governed connections with different transport/auth values.

Layer Stack

When you are unsure where a change belongs, place it on the narrowest layer that solves the problem:

Layer Owns Examples
Surface user-facing Apps, Connections, Review, Developer/Advanced screens gallery cards, setup wizard, review queue
Governance profiles, bindings, allow/ask-first/block rules, quarantine, audit read-only profile, ask-first write policy
Capability action catalogs, schemas, risk classes, changed-tool review search_issues, create_comment, schema hash
Credential company_secrets, OAuth broker, credential resolver, token broker Slack bot token ref, Google OAuth refresh token ref
Identity actor attribution and token exchange board user, agent run, first-party service identity
Transport how the external system is reached remote HTTP MCP, local stdio, REST/OpenAPI, webhook

The agent should not hold a durable provider credential. It should hold a Paperclip run/session token; the server or broker resolves the connection, checks governance, invokes the provider, and writes audit.

Identity vs. connections

Signing a user in and connecting a resource are different planes with different owners, different token profiles, and different homes. Do not merge them. This section is the public, connections-side statement of the identity model so connector implementers inherit the rule without depending on private identity-service documentation or re-deriving it.

Plane Question Lives where Token profile
P1. Sign-in methods Who are you? paperclip-id (id.paperclip.ing → Account) Minimal-scope provider tokens (openid email profile), used once to authenticate, encrypted at rest, never exported
P2. Connections (Apps) What may your agents touch? Paperclip App instances (tool_connections), acquired via the connect broker for hosted + self-hosted Rich-scope, long-lived resource tokens in the instance's encrypted vault; per-agent grants; risk-tier policy defaults
P3. Login with Paperclip Who may authenticate against us? paperclip-id OIDC provider + DB-backed client registry Our ES256 ID/access tokens issued by us to registered RPs (instances, the broker, future third parties)

Everything in doc/connections/ — the First-30 matrix, the connection authoring runbook, and the connect-broker work — lives on plane P2. It never acquires, stores, or brokers a P1 sign-in token.

The standing rule (D7)

Adopted as a standing rule (decision D7) with the identity-model plan. State it verbatim in any P2 design so the app-store work cannot drift into merging the planes:

Sign-in tokens are never reused as resource tokens; id.paperclip.ing never stores resource tokens; no connections hub on the ID service.

P2 tokens flow broker → instance vault as pass-through only; the id.paperclip.ing Account page therefore must not grow a "Connections" hub. The reasons to hold the planes apart (from the plan §3):

  • Scope discipline. Sign-in wants the narrowest grant; connections want deliberately broad ones. One button that does both is how you grant repo access just to log in.
  • Blast radius. id.paperclip.ing holding every customer's Vercel/Slack/GitHub resource tokens would make it the single juiciest target in the fleet; the broker is intentionally pass-through.
  • Self-hosted symmetry. Instances own their vaults, so self-hosters don't depend on our uptime to use their own connections.
  • Legibility. Sign-in and connections answer different user questions, and every product we benchmarked (Vercel, Railway, GitHub, Google) keeps them on separate pages with separate names.

The explicit Vercel Connect exception does not change D7 or merge P1 and P2. The operator chooses Vercel as the P2 credential authority for an individual connection. id.paperclip.ing is not involved, and neither sign-in tokens nor provider tokens pass through it. The deployment's Vercel access token or workload OIDC identity is bootstrap authority for that external vault, not a provider resource credential.

Naming alignment

Use the surface-correct name for each plane; they intentionally differ:

Surface Plane Name to use
Paperclip App instances P2 "Connections"
id.paperclip.ing Account P1 "Ways to sign in"
id.paperclip.ing admin P3 "OIDC clients" (until the app store productizes it)

Packaging Rule

Default to a catalog entry when an integration can be described as metadata: manifest, auth config, action catalog, resource filters, and policy defaults.

Use a plugin only when the integration needs product code such as custom UI pages, its own tables, workers, migrations, routines, or specialized ingestion. A plugin may bundle catalog entries, but it must not bypass the connection, profile, policy, credential, and audit model.

Use a skill for agent instructions. Skills may use connections; they must not own durable tokens.

Canonical Docs

  • Glossary defines product and internal terms.
  • Identity vs. connections is the public statement of the P1/P2/P3 boundary and the D7 standing rule for connections work.
  • Security threat model harvests the keeper from PAP-2359 and maps it onto Apps v2.
  • First-30 matrix harvests the keeper from PAP-2432 and is the source matrix for connector playbook work.
  • Connecting any remote MCP server is the baseline: how an operator connects a standards-compliant remote MCP endpoint with no Paperclip code change, and how sign-in resolves a client.
  • Connection authoring runbook is the one end-to-end, agent-executable guide for adding a vendor as a catalog entry on Apps v2: research, connection-type selection, OAuth/API-key/generated-URL setup, encrypted credential handling, branding, implementation, browser and live-provider testing, verification, and PR submission.
  • Vercel Connect operator guide documents the optional external credential source, deployment flags, runtime resolution, recovery, and smoke requirements.
  • MCP access governance remains the operator runbook for the current gateway, profile, policy, approval, runtime, and audit APIs.

Migration Notes

Connections v1 contributed useful policy, UX, and rollout thinking, but its implementation branch is no longer the target. When you see old tickets or code using connections, connection_grants, or a provider-directory mental model, translate the intent into Apps v2:

Connections v1 intent Apps v2 home
Provider directory Apps gallery / tool_applications
Configured provider instance Connection / tool_connections
Grant allowlist Profiles, profile bindings, policies
Resource filters Policy/profile conditions plus provider config
Tool broker Tool gateway and runtime supervisor
Connection UX tail Apps, Connections, Review, Developer/Advanced IA

Do not add new work to the retired v1 branch. If an old ticket still describes a valid product gap, retarget it to an active Apps v2 issue or close it as superseded with a link to the replacement.